SharePreferences

考研英语二模拟试题及答案解析（16）(1~20/共20题)Section ⅠUse of EnglishDirections:Read the following text. Choose the best word(s) for each numbered blank and mark A, B, C or D on ANSWER SHEET 1.While western governments worry over the threat of Ebola, a more pervasive but far less harmful__1__is spreading through their populations like a winter sniffle: mobile personal technology.The similarity between disease organisms and personal devices is__2__. Viruses and other parasites control larger organisms, __3__ resources in order to multiply and spread. Smartphones and other gadgets do the same thing, __4__ever-increasing amounts of human attention and electricity supplied __5__ wire umbilici.It is tempting to__6__a "strategy" to both phages and phablets, neither of which is sentient.__7__, the process is evolutionary, consisting of many random evolutions, __8__experimented with by many product designers. This makes it all the more powerful.Tech__9__occurs through actively-learnt responses, or "operant conditioning" as animal be haviourists call it. The scientific parallel here also involves a rodent, typically a rat, which occupies a__10__cage called a Skinner Box. The animal is__11__with a food pellet for solving puzzles and punished with an electric shock when it fails."Are we getting a positive boost of hormones when we__12__look at our phone, seeking rewards?" asks David Shuker, an animal behaviourist at St Andrews university, sounding a little like a man withholding serious scientific endorsement__13__an idea that a journalist had in the shower. Research is needed, he says. Tech tycoons would meanwhile __14__ that the popularity of mobile devices is attributed to the brilliance of their designs. This is precisely what people whose thought processes have been__15__by an invasive pseudo-organism would believe.__16__, mobile technology causes symptoms less severe than physiological diseases. There are even benefits to__17__sufferers for shortened attention spans and the caffeine overload triggered by visits to Starbucks for the free Wi-Fi. Most importantly, you can__18__the Financial Times in places as remote as Alaska or Sidcup. In this__19__, a mobile device is closer to a symbiotic organism than a parasite. This would make it__20__to an intestinal bacterium that helps a person to stay alive, rather than a virus that may kill you.第1题A.phenomenonB.epidemicC.issueD.event第2题A.strikingB.obscureC.interestingD.mysterious第3题A.relyingC.grabbinging第4题A.taking overB.feeding onC.catching upD.allowing for 第5题A.withB.overC.toD.via第6题A.pointB.turnC.attributeD.prefer第7题A.InsteadB.MoreoverC.ThereforeD.Otherwise 第8题A.whichB.asC.thatD.where第9题A.progressB.termC.crisisD.addiction 第10题A.dangerousB.specialrgeD.funny第11题A.rewardedB.resistedC.resumedD.reversed第12题B.occasionallyC.happilyD.endlessly第13题A.withinB.fromC.aboutD.through第14题A.supportB.approveC.argueD.insist第15题A.formedB.seperatedC.classifiedD.modified第16题A.SurprisinglyB.ImportantlyC.FortunatelyD.Regrettably 第17题pensateB.helpfortD.improve第18题A.shareB.obtainC.subscribeD.observe第19题A.partB.senseC.levelD.way第20题A.adaptiveB.carefulC.similarD.captive下一题(21~25/共20题)Section ⅡReading ComprehensionDirections :Read the following four terts. Answer the questions below each text by choosing [A], [B],[C]or [D].Mark your answers on ANSWER SHEET 1.New science reveals how your brain is hard-wired when it comes to spending—and how you can reboot it.The choice to spend rather than save reflects a very human—and, some would say, American—quirk: a preference for immediate gratification over future gains. In other words, we get far more joy from buying a new pair of shoes today, or a Caribbean vacation, or an iPhone 4S, than from imagining a comfortable life tomorrow. Throw in an instant-access culture—in which we can get answers on the Internet within seconds, have a coffeepot delivered to our door overnight, and watch movies on demand—and we´re not exactly training the next generation to delay gratification. "Pleasure now is worth more to us than pleasure later," says economist William Dickens of Northeastern University, "We much prefer current consumption to future consumption. It may even be wired into us. "As brain Scientists plumb the neurology of an afternoon at the mall, they are discovering measurable differences between the brains of people who save and those who spend with abandon, particularly in areas of the brain that predict consequences, process the sense of reward, spur motivation, and control memory. In fact, neuroscientists are mapping the brain´s saving and spending circuits so precisely that they have been able to stir up the saving and disable the spending in some people. The result: people´s preferences switch from spending like a drunken sailor to saving like a child of the Depression. All told, the gray matter responsible for some of our most crucial decisions is finally revealing its secrets.Psychologists and behavioral economists, meanwhile, are identifying the personality types and other traits that distinguish savers from spenders, showing that people who aren´t good savers are neither stupid nor irrational—but often simply don´t accurately foresee the consequences of not saving. Rewire the brain to find pleasure in future rewards, and you´re on the path to a future you really want.In one experiment, neuroeconomist Paul Glimcher of New York University wanted to see what it would take for people to willingly delay gratification. He gave a dozen volunteers a choice: $ 20 now or more money, from $ 20.25 to $ 110, later. On one end of the spectrum was the person who agreed to take $21 in a month—to essentially wait a month in order to gain just $ 1. In economics-speak, this kind of person has a "flat discount function", meaning he values tomorrow almost as much as today and is therefore able to delay gratification. At the other end was someone who was willing to wait a month only if he got $ 68, a premium of $48 from the original offer. This is someone economists call a "steep discounter", meaning the value he puts on the future (and having money then) is dramatically less than the value he places on today; when he wants something, he wants it now.第21题When it comes to spending, new evidence shows that it______.A.is a difficult habit to explainB.can be stopped and restartedC.is a difficult mental decisionD.is an inherent disposition第22题When brain scientists "plumb the neurology of an afternoon at the mail", they______.A.spend a whole afternoon watching shoppers going roundB.interview shoppers to ask them embarrassing questionsC.measure the brain activity of people engaged in shoppingD.study current consumption rather than future consumption第23题The scientists studying spending habits______.A.can change people´s buying habits by making them drunk like sailorsB.are still at a loss about what causes some people to save or spendC.can change those who spend with abandon into those who saveD.can predict whether people spend or save by controlling people´s memory第24题If you are rewarded for saving, you are likely to______.A.abandon unnecessary purchasesB.demand more rewardsC.become irrational and stupidD.care less about the consequences第25题Neuroeconomist Paul Glimcher wants to find out______.A.whether people agree to delay a bigger gratificationB.what makes people postpone satisfactionC.how steep discounters gratify themselvesD.what creates the flat discount function上一题下一题(26~30/共20题)Section ⅡReading ComprehensionDirections :Read the following four terts. Answer the questions below each text by choosing [A], [B],[C]or [D].Mark your answers on ANSWER SHEET 1."Is it a vital interest of the state to have more anthropologists?" Rick Scott, the Florida governor, once asked. A leader of a prominent Internet company once told me that the firm regards admission to Harvard as a useful proof of talent, but a college education itself as useless. Parents and students themselves are acting on these principles, retreating from the humanities.I´ve been thinking about this after reading Fareed Zakaria´s smart new book, In Defense of a Liberal Education. Like Mr. Zakaria, I think that the liberal arts teach critical thinking. So, to answer the skeptics, here are my three reasons the humanities enrich our souls and sometimes even our pocketbooks as well.First, liberal arts equip students with communications and interpersonal skills that are valuable and genuinely rewarded in the labour force, especially when accompanied by technical abilities. "A broad liberal arts education is a key pathway to success in the 21st-century economy," says Lawrence Katz, a labour economist at Harvard. Professor Katz says that the economic return to pure technical skills has flattened, and the highest return now goes to those who combine soft skills— excellence at communicating and working with people—with technical skills.My second reason: We need people conversant with the humanities to help reach wise public policy decisions, even about the sciences. Technology companies must constantly weigh ethical decisions. To weigh these issues, regulators should be informed by first-rate science, but also by first-rate humanism. When the President´s Council on Bioethics issued its report in 2002, "Human Cloning and Human Dignity," it depends upon the humanities to shape judgments about ethics, limits and values.Third, wherever our careers lie, much of our happiness depends upon our interactions with those around us, and there´s some evidence that literature nurtures a richer emotional intelligence. Science magazine published five studies indicating that research subjects who read literary fiction did better at assessing the feelings of a person in a photo than those who read nonfiction or popular fiction. Literature seems to offer lessons in human nature that help us decode the world around us and be better friends. Literature also builds bridges of understanding.In short, it makes eminent sense to study coding and statistics today, but also history and literature.第26题What is implied in the first paragraph?A.Parents may encourage their children to major in anthropology.B.The humanities in Harvard are not popular among parents and students.C.The leader of an Internet company values Harvard education itself most.D.Rick Scott may think anthropologists aren´t key interests of the state.第27题Lawrence Katz holds that broad liberal arts______.A.are enough for you to succeedB.can enrich your wallets in economyC.achieve balance between communicating value and soft skillsD.maximize your potential when coupled with technical skills第28题Which of the following cannot be used as the example of the second sentence in Paragraph 4?A.Should Youtube change its web page?B.Where should Facebook set its privacy?C.How should Google handle sex and violence articles?D.Should Twitter close accounts that seem sympathetic to terrorists?第29题According to the Science magazine, compared with people reading literary fiction, those reading nonflction______.A.evaluate the work more difficultyB.decode the emotional state poorlyC.have richer emotional intelligenceD.recognize the portrait more easily第30题On the whole, the reasons that the humanities enrich our spiritual life include all the following EXCEPT______.A.they are useful for improving emotional intelligenceB.they are essential to the wise decisions of an organizationC.they link the soft skills with technical skills in the labour forceD.they benefit students in communications and interpersonal skills上一题下一题(31~35/共20题)Section ⅡReading ComprehensionDirections :Read the following four terts. Answer the questions below each text by choosing [A], [B],[C]or [D].Mark your answers on ANSWER SHEET 1.Robots have been the stuff of science fiction for so long that it is surprisingly hard to see them as the stuff of management fact. It is time for management thinkers to catch up with science-fiction writers. Robots have been doing menial jobs on production lines since the 1960s. The world already has more than 1 million industrial robots. There is now an acceleration in the rates at which they are becoming both cleverer and cheaper: an explosive combination.Robots are learning to interact with the world around them. Their ability to see things is getting ever closer to that of humans, as is their capacity to ingest information and act on it. Tomorrow´s robots will increasingly take on delicate, complex tasks. And instead of being imprisoned in cages to stop them colliding with people and machines, they will be free to wander.Until now executives have largely ignored robots, regarding them as an engineering rather than a management problem. This cannot go on: robots are becoming too powerful and ubiquitous. Companies certainly need to rethink their human-resources policies—starting by questioning whether they should have departments devoted to purely human resources.The first issue is how to manage the robots themselves. An American writer, Isaac Asimov laid down the basic rule in 1942: no robot should harm a human. This rule has been reinforced by recent technological improvements: robots are now much more sensitive to their surroundings and can be instructed to avoid hitting people.A second question is how to manage the homo side of homo-robo relations. Workers have always worried that new technologies will take away their livelihoods, ever since the original Luddites´ fears about mechanised looms. Now, the arrival of increasingly humanoid automatons in workplaces, in an era of high unemployment, is bound to provoke a reaction.Two principles—don´t let robots hurt or frighten people—are relatively simple. Robot scientists are tackling more complicated problems as robots become more sophisticated. They are keen to avoid hierarchies among rescue-robots(because the loss of the leader would render the rest redundant). They are keen to avoid duplication between robots and their human handlers. This suggests that the world could be on the verge of a great management revolution: making robots behave like humans rather than the 20th century´s preferred option, making humans behave like robots.第31题The second sentence implies that management thinkers should_____.A.turn robots into superheroes and supervillainsB.give robots names such as the TerminatorC.ponder more about homo-robo relationsD.create more robots with super power第32题Which of the following statements is true about robots?A.They will be free and colliding with people and machines.B.They deliver information by acting like a human being.C.Their eyesight is becoming closer to men´ s.D.They will do sophisticated jobs.第33题The word "ubiquitous"(Para. 3)probably means______.A.numerousB.pervasiveC.intelligentplicated第34题To deal with the second problem, companies may not_____.A.show employees that the robot sitting alongside them is a complete helpmateB.explain that robots can help preserve manufacturing jobs in the rich worldC.persuade workers that robots are productivity-enhancersD.tell workers that robots are not just job-eating aliens第35题From the passage we can see that the author thinks homo-robo relations_____.A.are intrusiveB.render worriesC.become sentientD.require specifications上一题下一题(36~40/共20题)Section ⅡReading ComprehensionDirections :Read the following four terts. Answer the questions below each text by choosing [A], [B],[C]or [D].Mark your answers on ANSWER SHEET 1.Organizations and societies rely on fines and rewards to harness people´s self-interest in the service of the common good. The threat of a ticket keeps drivers in line, and the promise of a bonus inspires high performance. But incentives can also backfire, diminishing the very behavior they´re meant to encourage.A generation ago, Richard Titmuss claimed that paying people to donate blood reduced the supply. Economists were skeptical, citing a lack of empirical evidence. But since then, new data and models have prompted a sea change in how economists think about incentives—showing, among other things, that Titmuss was right often enough that businesses should take note.Experimental economists have found that offering to pay women for donating blood decreases the number willing to donate by almost half, and that letting them contribute the payment to charity reverses the effect. Dozens of recent experiments show that rewarding self-interest with economic incentives can backfire when they undermine what Adam Smith called "the moral sentiments". The psychology here has escaped blackboard economists, but it will be no surprise to people in business: When we take a job or buy a car, we are not only trying to get stuff—we are also trying to be a certain kind of person. People desire to be esteemed by others and to be seen as ethical and dignified. And they don´t want to be taken for suckers. Rewarding blood donations may backfire because it suggests that the donor is less interested in being altruisticthan in making a dollar. Incentives also run into trouble when they signal that the employer mistrusts the employee or is greedy. Close supervision of workers coupled with pay for performance is textbook economics—and a prescription for sullen employees.Perhaps most important, incentives affect what our actions signal, whether we´re being self-interested or civic-minded, manipulated or trusted, and they can imply—sometimes wrongly—what motivates us. Fines or public rebukes that appeal to our moral sentiments by signaling social disapproval (think of littering) can be highly effective. But incentives go wrong when they offend or diminish our ethical sensibilities.This does not mean it´s impossible to appeal to self-interested and ethical motivations at the same time—just that efforts to do so often fail. Ideally, policies support socially valued ends not only by harnessing self-interest but also by encouraging public-spiritedness. The small tax on plastic grocery bags enacted in Ireland in 2002 that resulted in their virtual elimination appears to have had such an effect. It punished offenders monetarily while conveying a moral message. Carrying a plastic bag joined wearing a fur coat in the gallery of anti-social anachronisms.第36题From the first two paragraphs, we know that______.A.economic incentives actually discourage people to behave wellB.economists didn´t agree with Titmuss for the lack of empirical evidenceC.economists now prompt businesses to note down Titmuss´s claimanizational and social progresses depend on economic incentives第37题According to experimental economists,______.A.a decreasing number of people donate blood for charityB.more money is offered, fewer people donate bloodC.economic incentives clash with "the moral sentiments"D.economic incentives may run in the opposite direction第38题It can be known from the text that incentives are characterized as______.A.implicativeB.effectiveC.manipulatingD.counterproductive第39题The small tax on plastic grocery bags in Ireland is mentioned to show that______.A.incentives can harness egoism and inspire altruismB.Ireland is determined to eliminate plastic pollutionC.monetary punishments usually have moral implicationsD.incentive policies by the government are more effective第40题What is the message the author intends to convey?A.Money is not everything; instead, there is always something else.B.Incentives have more negative influences than positive ones.C.Incentives may go wrong when they clash with "the moral sentiments".D.Businesses might as well put economic incentives to fuller play.上一题下一题(41~45/共5题)Part BDirections :Read the following tert and decide whether each of the statements is true or false. Choose T if the state ment is true or F if the statement is not true. Mark your answers on ANSWER SHEET 1. Canada´s premiers (the leaders of provincial governments), if they have any breath left after complaining about Ottawa at their late July annual meeting, might spare a moment to do something, together, to reduce healthcare costs.They´re all groaning about soaring health budgets, the fastest-growing component of which is pharmaceutical costs.According to the Canadian Institute for Health Information, prescription drug costs have risen since 1997 at twice the rate of overall health-care spending. Part of the increase comes from drugs being used to replace other kinds of treatments. Part of it arises from new drugs costing more than older kinds. Part of it is higher prices.What to do? Both the Romanow commission and the Kirby committee on health care—to say nothing of reports from other experts—recommended the creation of a national drug agency. Instead of each province having its own list of approved drugs, bureaucracy, procedures and limited bargaining power, all would pool resources, work with Ottawa, and create a national institution.What does "national" mean? Roy Romanow and Senator Michael Kirby recommended a federal-provincial body much like the recently created National Health Council.But "national" doesn´t have to mean that. "National" could mean interprovincial—provinces combining efforts to create one body.Either way, one benefit of a "national" organization would be to negotiate better prices, if possible, with drug manufacturers. Instead of having one province—or a series of hospitals within a province—negotiate a price for a given drug on the provincial list, the national agency would negotiate on behalf of all provinces.Of course, the pharmaceutical companies will scream. They like divided buyers; they can lobby better that way. They can use the threat of removing jobs from one province to another. They can hope that, if one province includes a drug on its list, the pressure will cause others to include it on theirs. They wouldn´t like a national agency, but self-interest would lead them to deal with it.A small step has been taken in the direction of a national agency with the creation of the Canadian Coordinating Office for Health Technology Assessment, funded by Ottawa and the provinces. Under it, a Common Drug Review recommends to provincial lists which new drugs should be included. Predictably, and regrettably, Quebec refused to join.A few premiers are suspicious of any federal-provincial deal-making. They (particularly Quebec and Alberta) just want Ottawa to fork over additional billions with few, if any, strings attached. That´s one reason why the idea of a national list hasn´t gone anywhere, while drug costs keep rising fast.So, if the provinces want to run the health-care show, they should prove they can run it, starting with an interprovincial health list that would end duplication, save administrative costs, prevent one province from being played off against another, and bargain for better drug prices.图片第41题第42题________第43题______第44题_______第45题_______上一题下一题(1/1)Part CDirections: Read the following text carefully and then translate the underlined segments into Chinese. (10 points)第46题Quality of life is about more than the size of your pay cheque. It means being able to spend an evening with your family once a week—instead of keeping one parent at home with the kids while the other works, and then exchanging a few words when you switch roles halfway through the day. It means being able to request working hours that allow you to travel when buses are running so you do not have to walk miles to get to work.Those things matter to workers. When someone on a low wage talks about finding a better job, better pay is just part of the mix. This is why campaigns groups across America are trying to win better conditions—enabling employees to address questions of health, safety and life quality, alongside their wage gains. Short-notice rotas, as much as low pay or unsafe conditions, are central to a spate of protests across the US. ____________上一题下一题(1/1)Section WritingPart A第47题Write an email of about 100 words to relevant departments to give some advice on how to live a low-carbon life.You should include the details you think necessary. You should write neatly on the ANSWER SHEET. Do not use your own name. Use "Li Ming" instead. Do not write the address.(10 points) ___________上一题下一题(1/1)Part B第48题Write an essay based on the following chart. In your essay, you should1)interpret the chart, and2)give your comments.You should write about 150 words on the ANSWER SHEET.(15 points)图片_______________上一题交卷交卷答题卡(1~20/共20题)Section ⅠUse of EnglishDirections:Read the following text. Choose the best word(s) for each numbered blank and mark A, B, C or D on ANSWER SHEET 1.While western governments worry over the threat of Ebola, a more pervasive but far less harmful__1__is spreading through their populations like a winter sniffle: mobile personal technology.The similarity between disease organisms and personal devices is__2__. Viruses and other parasites control larger organisms, __3__ resources in order to multiply and spread. Smartphones and other gadgets do the same thing, __4__ever-increasing amounts of human attention and electricity supplied __5__ wire umbilici.It is tempting to__6__a "strategy" to both phages and phablets, neither of which is sentient.__7__, the process is evolutionary, consisting of many random evolutions, __8__experimented with by many product designers. This makes it all the more powerful.Tech__9__occurs through actively-learnt responses, or "operant conditioning" as animal be haviourists call it. The scientific parallel here also involves a rodent, typically a rat, which occupies a__10__cage called a Skinner Box. The animal is__11__with a food pellet for solving puzzles and punished with an electric shock when it fails."Are we getting a positive boost of hormones when we__12__look at our phone, seeking rewards?" asks David Shuker, an animal behaviourist at St Andrews university, sounding a little like a man withholding serious scientific endorsement__13__an idea that a journalist had in the shower. Research is needed, he says. Tech tycoons would meanwhile __14__ that the popularity of mobile devices is attributed to the brilliance of their designs. This is precisely what people whose thought processes have been__15__by an invasive pseudo-organism would believe.__16__, mobile technology causes symptoms less severe than physiological diseases. There are even benefits to__17__sufferers for shortened attention spans and the caffeine overload triggered by visits to Starbucks for the free Wi-Fi. Most importantly, you can__18__the Financial Times in places as remote as Alaska or Sidcup. In this__19__, a mobile device is closer to a symbiotic organism than a parasite. This would make it__20__to an intestinal bacterium that helps a person to stay alive, rather than a virus that may kill you.第1题A.phenomenonB.epidemicC.issueD.event参考答案： B 您的答案：未作答答案解析：此处意为“在西方国家的政府担忧埃博拉的威胁之际，一种更为常见但远没那么有害的______，正像冬天的轻微感冒一样在人群中传播”。

看到很多书中都没有对PreferenceActivity做介绍，而我正好又在项目中用到，所以就把自己的使用的在这总结一下，也方便日后查找。

PerferenceActivity是什么，看下面的截图：Android系统截图（左）MusicPlayer Setting截图(右）好了，我们看到Android系统本身就大量用到了PreferenceActivity来对系统进行信息配置和管理，那么它是怎么保存数据的呢，如何创建PrefenceActivity的呢，更关键是怎样触发相应事件的呢。

先看第一个问题，PreferenceActivity是如何保存的数据。

对Android系统了解的都知道，Android系统有四种基本的数据保存方法，一是SharedPreference，二是文件，三是SQLite,四是ContentProvider。

看出来了吧，Preference，对就是使用SharedPreferneces以键值对的形式进行保存的，当然，我们也可以通过SharedPreferences来获取PreferenceActivity设置的值。

第二个问题：如何创建一个PreferenceActivity。

其实Eclipse提供了相应的创建工具，和创建Layout是基本相同的。

步骤如下：创建Android项目，并添加一个Android xml文件。

注意，这次选择的不是Layout，而是Preference,而且注意Folder路径是res/xml.添加完成之后，在res/xml/下打开添加的preference.xml文件。

可以看到Android也为我们提供两种编辑模式，可视化的结构设计及xml源码设计。

推荐使用structure进行创建。

如图所示：下面我们看看PrefeneceActivity都提供了哪几种元素可供使用。

点击Add按钮，在打开的新窗口中可以看到以下几项：CheckBoxPreference:CheckBox选择项，对应的值的ture或flase。

library如何使用sharedpreference SharedPreference是Android中一种轻量级的数据存储方式，它可以存储一些简单的键值对数据，比如用户的偏好设置、应用的配置信息等。

SharedPreference的使用非常简单，只需要调用一些简单的API就可以实现数据的存储和读取。

本文将介绍如何使用SharedPreference来存储和读取数据。

一、创建SharedPreference对象在使用SharedPreference之前，需要先创建一个SharedPreference对象。

SharedPreference对象可以通过Context的getSharedPreferences()方法来创建。

该方法有两个参数，第一个参数是SharedPreference的名称，第二个参数是操作模式。

操作模式有两种，MODE_PRIVATE和MODE_MULTI_PROCESS。

MODE_PRIVATE表示只有当前应用可以访问该SharedPreference，MODE_MULTI_PROCESS表示多个进程可以同时访问该SharedPreference。

下面是一个创建SharedPreference对象的示例代码：SharedPreferences sharedPreferences =getSharedPreferences("my_preference", Context.MODE_PRIVATE);二、存储数据存储数据是SharedPreference的主要功能之一。

SharedPreference可以存储一些简单的数据类型，比如字符串、整数、布尔值等。

存储数据可以通过SharedPreferences.Editor对象来实现。

SharedPreferences.Editor对象可以通过SharedPreferences的edit()方法来获取。

存储数据的过程分为以下几步：1. 获取SharedPreferences.Editor对象SharedPreferences.Editor editor = sharedPreferences.edit();2. 存储数据存储数据可以通过SharedPreferences.Editor对象的putXXX()方法来实现，其中XXX表示数据类型，比如putString()表示存储字符串，putInt()表示存储整数，putBoolean()表示存储布尔值等。

基础在Ap中有时需要设置一些配置参数，这些参数通过配置文件保存。

为了设置这些参数，需要提供一个UI，针对这种需求，Android提供了preferenceActivity。

PreferenceActivity通过读取预先定义的xml文件来生成界面，并能够自动的根据用户的操作来修改参数，并保存到配置文件中供读取。

1.MainActivity：按下Menu按键弹出菜单，点击菜单启动SettingActivity。

2.SettingActivity继承自PreferenceActivity：Java代码@Overrideprotected void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);addPreferencesFromResource(R.xml.settings);}在onCreate函数中加载参数定义文件。

Java代码1.public void onSharedPreferenceChanged(SharedPreferences sharedPreferences, String key)；当参数值被改变时会调用此Listener，可以在此Listener中作一些界面刷新工作，比如当前参数值改变为新的值。

Java代码1.Preference android.preference.PreferenceActivity.findPreference(CharSequence key);获取指定key所对应的preference对象，即使此key在配置文件中尚未保存，也能够得到preference对象，而不会是null。

3.settings.xml：保存在xml目中的参数定义文件，在创建Android XML文件时选择Preference即可创建一个空的参数定义文件。

Xml代码<?xml version="1.0" encoding="utf-8"?><PreferenceScreenxmlns:android="/apk/res/android"> </PreferenceScreen>添加一个CheckBoxPreference子项，并设置属性：Key:checkbox_keyTitle:CheckBox ItemSummary:test check box itemXml代码<?xml version="1.0" encoding="utf-8"?><PreferenceScreenxmlns:android="/apk/res/android"><CheckBoxPreference android:key="checkbox_key"android:title="CheckBox Item" android:summary="test check box item"></CheckBoxPreference></PreferenceScreen>key是用来访问此参数的值的关键字，保存后的配置文件类似如下内容：Xml代码<?xml version='1.0' encoding='utf-8' standalone='yes' ?><map><boolean name="checkbox_key" value="true" /></map>启动Ap，点击菜单，即可看到参数设置界面，并且当用户点击操作改变了参数值后，也会被自动保存。

sharedpreferences清理机制（原创版）目录1.SharedPreferences 简介2.SharedPreferences 的清理机制3.避免 SharedPreferences 数据丢失的方法4.结论正文【1.SharedPreferences 简介】SharedPreferences 是 Android 系统提供的一种数据存储方式，它主要用于存储应用的一些常用配置和数据。

SharedPreferences 的数据是存储在 XML 文件中的，文件名由包名和文件名组成。

SharedPreferences 具有存储数据简单、读取数据方便等优点，因此在 Android 开发中被广泛应用。

【2.SharedPreferences 的清理机制】SharedPreferences 本身具有自动清理机制。

当设备内存不足时，系统会自动清理不再使用的 SharedPreferences 文件。

但是，这种清理机制并非万无一失，因为它存在以下两个问题：（1）SharedPreferences 文件的清理不是实时进行的，而是在设备内存不足时才触发。

这意味着，当设备内存不足时，SharedPreferences 文件可能已经被回收，但是对应的 Java 对象却还在引用它，导致内存泄漏。

（2）SharedPreferences 文件的清理是基于文件名的。

如果一个SharedPreferences 文件有多个版本，系统只会保留最新的版本，而删除旧的版本。

这意味着，如果一个 SharedPreferences 文件被多个Activity 共享，其中一个 Activity 对这个文件进行了修改并保存，那么其他 Activity 对这个文件的引用就会失效，因为它们引用的是旧版本的文件。

【3.避免 SharedPreferences 数据丢失的方法】为了避免 SharedPreferences 数据丢失，开发者可以采取以下两种方法：（1）使用异步任务保存 SharedPreferences 数据。

安卓sharedpreferences的用法安卓中的SharedPreferences是一种轻量级的数据存储方式，用于存储和读取应用程序的简单键值对数据。

SharedPreferences旨在存储应用程序的配置信息、用户首选项和其他简单的数据类型，以便在应用程序下次启动时可以快速读取。

SharedPreferences的使用非常简便，接下来我会一步一步回答你关于它的问题，帮助你更好地理解和运用。

第一步：创建SharedPreferences对象在安卓中，我们可以通过Context类的getSharedPreferences()方法来创建SharedPreferences对象。

这个方法接受两个参数，第一个参数是SharedPreferences的名称，第二个参数是指定访问模式（MODE_PRIVATE表示只有当前应用程序可以访问）。

SharedPreferences sharedPreferences = getSharedPreferences("MyData", Context.MODE_PRIVATE);第二步：保存数据要保存数据到SharedPreferences中，我们需要使用SharedPreferences对象的edit()方法获取一个Editor对象，然后使用Editor对象的putXxx()方法将数据存入。

SharedPreferences.Editor editor = sharedPreferences.edit(); editor.putString("username", "John");editor.putInt("age", 25);editor.putBoolean("isMarried", false);editor.apply();在上面的例子中，我们使用putString()方法将用户名存储为"John"，putInt()方法将年龄存储为25，putBoolean()方法将婚姻状态存储为false。

Android五种数据存储⽅式android 五种数据存储：SharePreferences、SQLite、Contert Provider、File、⽹络存储Android系统提供了四种存储数据⽅式。

分别为：SharePreference、SQLite、Content Provider和File。

但由于Android系统中，数据基本是私有的，都是存放于”data/data”程序包名⽬录下，所以要实现数据共享，正确⽅式是使⽤Content ProviderSQLite：SQLite是⼀个轻量级的数据库，⽀持基本的SQL语法，是常被采⽤的⼀种数据存储⽅式。

Android为此数据库提供了⼀个名为SQLiteDatabase的类，封装了⼀些操作数据库的apiSharedPreference：除SQLite数据库外，另⼀种常⽤的数据存储⽅式，其本质就是⼀个xml⽂件，常⽤于存储较简单的参数设置。

File：即常说的⽂件（I/O）存储⽅法，常⽤语存储⼤数量的数据，但是缺点是更新数据将是⼀件困难的事情。

ContentProvider: Android系统中能实现所有应⽤程序共享的⼀种数据存储⽅式，由于数据通常在各应⽤间的是互相私密的，所以此存储⽅式较少使⽤，但是其⼜是必不可少的⼀种存储⽅式。

例如⾳频，视频，图⽚和通讯录，⼀般都可以采⽤此种⽅式进⾏存储。

每个Content Provider都会对外提供⼀个公共的URI（包装成Uri对象），如果应⽤程序有数据需要共享时，就需要使⽤Content Provider为这些数据定义⼀个URI，然后其他的应⽤程序就通过Content Provider传⼊这个URI来对数据进⾏操作。

URI由3个部分组成:"content://"、数据的路径、标识ID(可选)。

1）SQLite数据存储======================================================================SQLite是⼀种转为嵌⼊式设备设计的轻型数据库，其只有五种数据类型，分别为：NULL:空值INTEGER:整数REAL:浮点数TEXT:字符串BLOB:⼤数据在SQLite中，并没有专门设计BOOLEAN和DATE类型，因为BOOLEAN型可以⽤INTEGER的0和1代替true和false，⽽DATE类型则可以拥有特定格式的TEXT、REAL和INTEGER的值来代替显⽰，为了能⽅便的操作DATE类型，SQLite提供了⼀组函数，在Android系统中提供了anroid.database.sqlite包，⽤于进⾏SQLite数据库的增，删，改，查⼯作，其主要⽅法如下：　beginTransaction(): 开始⼀个事务。

sharedpreferences 用法（实用版）目录1.SharedPreferences 简介2.SharedPreferences 基本用法3.SharedPreferences 存储数据4.SharedPreferences 获取数据5.SharedPreferences 的优缺点正文【1.SharedPreferences 简介】SharedPreferences 是 Android 系统提供的一种轻量级的存储数据方式，主要用于存储应用的一些常用配置。

相较于其他存储方式，如SQLite 数据库和文件存储，SharedPreferences 具有存储数据量小、读写速度快、安全性高等特点。

【2.SharedPreferences 基本用法】要使用 SharedPreferences，首先需要导入android.content.SharedPreferences 包。

然后，在AndroidManifest.xml 文件中添加相应的访问权限：```<uses-permissionandroid:name="android.permission.WRITE_EXTERNAL_STORAGE" /> ```接下来，在 Activity 或 Fragment 中创建一个SharedPreferences 对象，并通过 getSharedPreferences() 方法获取到：```SharedPreferences preferences =getSharedPreferences("my_prefs", MODE_PRIVATE);```其中，"my_prefs"为 SharedPreferences 的文件名，MODE_PRIVATE 表示私有模式，即只有当前应用可以访问该 SharedPreferences。

【3.SharedPreferences 存储数据】SharedPreferences 采用键值对（key-value）的方式存储数据。

使用ADB（Android Debug Bridge）命令行工具可以修改SharedPreferences中的值。

以下是通过ADB修改SharedPreferences 值的步骤：1. 确保已经启用了USB调试模式。

在Android设备上，打开开发者选项并启用USB调试模式。

2. 连接Android设备到计算机，并确保ADB工具已经正确安装和配置。

3. 打开命令提示符（Windows）或终端（Mac/Linux）。

4. 输入以下命令来查看当前连接的设备列表：```adb devices```如果设备正常连接，将在列表中显示设备的序列号。

5. 使用以下命令来修改SharedPreferences的值：```phpadb shell "echo <value> > /data/data/<package_name>/shared_prefs/<shared_prefs_file>.xml"```将`<value>` 替换为要设置的值，`<package_name>` 替换为应用程序的包名，`<shared_prefs_file>` 替换为SharedPreferences文件的名称。

例如，如果要修改名为`my_prefs.xml` 的SharedPreferences 文件中的`key1` 键的值：```bashadb shell "echo 'new_value' > /data/data/<package_name>/shared_prefs/my_prefs.xml"```请确保使用适当的包名替换`<package_name>`。

6. 执行命令后，SharedPreferences的值将被更新为指定的值。

请注意，使用ADB修改SharedPreferences的值只适用于调试和测试目的。

第三方登录及分享帮助文档修订日期1.概述1.1.文档说明本文档定义了新浪微博第三登录，QQ第三方登录，新浪微博分享的使用说明、体系结构、API 接口，所有接口必需在联网状态下才能正常使用。

其适用的读者为android软件工程师，通过阅读本文档，读者可以掌握如何使用第三方登录及微博分享功能。

2.使用说明2.1.开发说明1. 使用第三方服务，需要经过第三平台的授权，请到分别到 和/manage/login注册成为新浪及QQ互联的开发者，并为所开发的软件申请appid；2. 如果开发者申请了appid，只需要在Demo中的com.oauthTest.utils.ConfigUtil.java中配置appid和appSecret即可实现本文档描述的功能。

如果需要详细的了解这一切的原理步骤，请参考程序Demo和以下文档。

2.2.支持平台1. 支持Android 1.6 及以上版本系统；2.3.类属性介绍1．com.oauthTest.utils.ConfigUtil.java（配置信息）2. com.oauthTest.servicemodel.SinaTokenSM（新浪令牌信息）3. com.oauthTest.servicemodel.SinaTokenSM （QQ令牌信息）4. com.oauthTest.servicemodel.GeoSM（地理信息）5. erSM（用户信息）6．com.oauthTest.servicemodel.SinaWeiBoSM（新浪微博信息）2.4.原理详解2.4.1．新浪第三方登录第一步：首先使用WebView打开授权界面。

第二步：进入授权界面后，用户在授权界面输入新浪账号和密码后点击授权或登录获取此用户的授权，授权获取成功后。

返回code和state参数。

第三步：然后通过访问指定地址请求token(令牌)信息。

返回令牌信息后。

令牌信息中有一个uid 的字段，这个字段相对于授权的应用是唯一的，也就是说它下次对本应用授权后，返回的uid值还是一模一样的，所以这时我们只要保存这个UID即可。

ActionScript类下表列出了服务器端ActionScript语言参考中的所有类。

Application类包含有关一个Flash Media Server应用程序实例的信息，它会一直维持这些信息直到这个应用程序实例被卸载。

Client类 Client类让你处理连接到一个Flash Media Server应用程序实例的每一个用户或说client。

File类 File类让应用程序写入服务器的文件系统。

LoadVars类 LoadVars类可以让你从某个远端或本地把变量装入一个服务器端脚本。

NetConnection类服务器端NetConnection类可以让你在一个Flash Media Server应用程序实例和一个应用程序服务器、另一个Flash Media Server，或是同一台服务器上的另一个Flash Media Server应用程序实例之间创建一个双路连接。

SharedObject类 SharedObject类可以让你在多个客户应用程序间实时地共享数据。

SOAPCall类 SOAPCall类是从所有Web服务（Web Service）调用返回的对象类型。

SOAPFault类 SOAPFault类是返回到WebService.onFault和SOAPCall.onFault函数的错误对象的对象类型。

Stream类 Stream类可以让你处理一个Flash Media Server应用程序中的每一个流。

WebService类 WebService类可以让你创建和访问一个WSDL/SOAP Web服务。

XML类 XML类可以让你装载、解析、发送、建立，以及操作XML文档。

XMLSocket类 XMLSocket类实现客户机套接字，这可以让Flash Media Server和一个由一个IP地址或域名识别的服务器进行通讯。

XMLStream类 XMLStream类是一个XMLSocket类的变种。

The information in this document is subject to change without notice and does not represent a commitment on the part of Native Instruments GmbH. The software described by this docu-ment is subject to a License Agreement and may not be copied to other media. No part of this publication may be copied, reproduced or otherwise transmitted or recorded, for any purpose, without prior written permission by Native Instruments GmbH, hereinafter referred to as Native Instruments.“Native Instruments”, “NI” and associated logos are (registered) trademarks of Native Instru-ments GmbH.ASIO, VST, HALion and Cubase are registered trademarks of Steinberg Media Technologies GmbH.All other product and company names are trademarks™ or registered® trademarks of their re-spective holders. Use of them does not imply any affiliation with or endorsement by them.Document authored by: David Gover and Nico Sidi.Software version: 2.8 (02/2019)Hardware version: MASCHINE MIKRO MK3Special thanks to the Beta Test Team, who were invaluable not just in tracking down bugs, but in making this a better product.NATIVE INSTRUMENTS GmbH Schlesische Str. 29-30D-10997 Berlin Germanywww.native-instruments.de NATIVE INSTRUMENTS North America, Inc. 6725 Sunset Boulevard5th FloorLos Angeles, CA 90028USANATIVE INSTRUMENTS K.K.YO Building 3FJingumae 6-7-15, Shibuya-ku, Tokyo 150-0001Japanwww.native-instruments.co.jp NATIVE INSTRUMENTS UK Limited 18 Phipp StreetLondon EC2A 4NUUKNATIVE INSTRUMENTS FRANCE SARL 113 Rue Saint-Maur75011 ParisFrance SHENZHEN NATIVE INSTRUMENTS COMPANY Limited 5F, Shenzhen Zimao Center111 Taizi Road, Nanshan District, Shenzhen, GuangdongChina© NATIVE INSTRUMENTS GmbH, 2019. All rights reserved.Table of Contents1Welcome to MASCHINE (23)1.1MASCHINE Documentation (24)1.2Document Conventions (25)1.3New Features in MASCHINE 2.8 (26)1.4New Features in MASCHINE 2.7.10 (28)1.5New Features in MASCHINE 2.7.8 (29)1.6New Features in MASCHINE 2.7.7 (29)1.7New Features in MASCHINE 2.7.4 (31)1.8New Features in MASCHINE 2.7.3 (33)2Quick Reference (35)2.1MASCHINE Project Overview (35)2.1.1Sound Content (35)2.1.2Arrangement (37)2.2MASCHINE Hardware Overview (40)2.2.1MASCHINE MIKRO Hardware Overview (40)2.2.1.1Browser Section (41)2.2.1.2Edit Section (42)2.2.1.3Performance Section (43)2.2.1.4Transport Section (45)2.2.1.5Pad Section (46)2.2.1.6Rear Panel (50)2.3MASCHINE Software Overview (51)2.3.1Header (52)2.3.2Browser (54)2.3.3Arranger (56)2.3.4Control Area (59)2.3.5Pattern Editor (60)3Basic Concepts (62)3.1Important Names and Concepts (62)3.2Adjusting the MASCHINE User Interface (65)3.2.1Adjusting the Size of the Interface (65)3.2.2Switching between Ideas View and Song View (66)3.2.3Showing/Hiding the Browser (67)3.2.4Showing/Hiding the Control Lane (67)3.3Common Operations (68)3.3.1Adjusting Volume, Swing, and Tempo (68)3.3.2Undo/Redo (71)3.3.3Focusing on a Group or a Sound (73)3.3.4Switching Between the Master, Group, and Sound Level (77)3.3.5Navigating Channel Properties, Plug-ins, and Parameter Pages in the Control Area.773.3.6Navigating the Software Using the Controller (82)3.3.7Using Two or More Hardware Controllers (82)3.3.8Loading a Recent Project from the Controller (84)3.4Native Kontrol Standard (85)3.5Stand-Alone and Plug-in Mode (86)3.5.1Differences between Stand-Alone and Plug-in Mode (86)3.5.2Switching Instances (88)3.6Preferences (88)3.6.1Preferences – General Page (89)3.6.2Preferences – Audio Page (93)3.6.3Preferences – MIDI Page (95)3.6.4Preferences – Default Page (97)3.6.5Preferences – Library Page (101)3.6.6Preferences – Plug-ins Page (109)3.6.7Preferences – Hardware Page (114)3.6.8Preferences – Colors Page (114)3.7Integrating MASCHINE into a MIDI Setup (117)3.7.1Connecting External MIDI Equipment (117)3.7.2Sync to External MIDI Clock (117)3.7.3Send MIDI Clock (118)3.7.4Using MIDI Mode (119)3.8Syncing MASCHINE using Ableton Link (120)3.8.1Connecting to a Network (121)3.8.2Joining and Leaving a Link Session (121)4Browser (123)4.1Browser Basics (123)4.1.1The MASCHINE Library (123)4.1.2Browsing the Library vs. Browsing Your Hard Disks (124)4.2Searching and Loading Files from the Library (125)4.2.1Overview of the Library Pane (125)4.2.2Selecting or Loading a Product and Selecting a Bank from the Browser (128)4.2.3Selecting a Product Category, a Product, a Bank, and a Sub-Bank (133)4.2.3.1Selecting a Product Category, a Product, a Bank, and a Sub-Bank on theController (137)4.2.4Selecting a File Type (137)4.2.5Choosing Between Factory and User Content (138)4.2.6Selecting Type and Character Tags (138)4.2.7Performing a Text Search (142)4.2.8Loading a File from the Result List (143)4.3Additional Browsing Tools (148)4.3.1Loading the Selected Files Automatically (148)4.3.2Auditioning Instrument Presets (149)4.3.3Auditioning Samples (150)4.3.4Loading Groups with Patterns (150)4.3.5Loading Groups with Routing (151)4.3.6Displaying File Information (151)4.4Using Favorites in the Browser (152)4.5Editing the Files’ Tags and Properties (155)4.5.1Attribute Editor Basics (155)4.5.2The Bank Page (157)4.5.3The Types and Characters Pages (157)4.5.4The Properties Page (160)4.6Loading and Importing Files from Your File System (161)4.6.1Overview of the FILES Pane (161)4.6.2Using Favorites (163)4.6.3Using the Location Bar (164)4.6.4Navigating to Recent Locations (165)4.6.5Using the Result List (166)4.6.6Importing Files to the MASCHINE Library (169)4.7Locating Missing Samples (171)4.8Using Quick Browse (173)5Managing Sounds, Groups, and Your Project (175)5.1Overview of the Sounds, Groups, and Master (175)5.1.1The Sound, Group, and Master Channels (176)5.1.2Similarities and Differences in Handling Sounds and Groups (177)5.1.3Selecting Multiple Sounds or Groups (178)5.2Managing Sounds (181)5.2.1Loading Sounds (183)5.2.2Pre-listening to Sounds (184)5.2.3Renaming Sound Slots (185)5.2.4Changing the Sound’s Color (186)5.2.5Saving Sounds (187)5.2.6Copying and Pasting Sounds (189)5.2.7Moving Sounds (192)5.2.8Resetting Sound Slots (193)5.3Managing Groups (194)5.3.1Creating Groups (196)5.3.2Loading Groups (197)5.3.3Renaming Groups (198)5.3.4Changing the Group’s Color (199)5.3.5Saving Groups (200)5.3.6Copying and Pasting Groups (202)5.3.7Reordering Groups (206)5.3.8Deleting Groups (207)5.4Exporting MASCHINE Objects and Audio (208)5.4.1Saving a Group with its Samples (208)5.4.2Saving a Project with its Samples (210)5.4.3Exporting Audio (212)5.5Importing Third-Party File Formats (218)5.5.1Loading REX Files into Sound Slots (218)5.5.2Importing MPC Programs to Groups (219)6Playing on the Controller (223)6.1Adjusting the Pads (223)6.1.1The Pad View in the Software (223)6.1.2Choosing a Pad Input Mode (225)6.1.3Adjusting the Base Key (226)6.2Adjusting the Key, Choke, and Link Parameters for Multiple Sounds (227)6.3Playing Tools (229)6.3.1Mute and Solo (229)6.3.2Choke All Notes (233)6.3.3Groove (233)6.3.4Level, Tempo, Tune, and Groove Shortcuts on Your Controller (235)6.3.5Tap Tempo (235)6.4Performance Features (236)6.4.1Overview of the Perform Features (236)6.4.2Selecting a Scale and Creating Chords (239)6.4.3Scale and Chord Parameters (240)6.4.4Creating Arpeggios and Repeated Notes (253)6.4.5Swing on Note Repeat / Arp Output (257)6.5Using Lock Snapshots (257)6.5.1Creating a Lock Snapshot (257)7Working with Plug-ins (259)7.1Plug-in Overview (259)7.1.1Plug-in Basics (259)7.1.2First Plug-in Slot of Sounds: Choosing the Sound’s Role (263)7.1.3Loading, Removing, and Replacing a Plug-in (264)7.1.4Adjusting the Plug-in Parameters (270)7.1.5Bypassing Plug-in Slots (270)7.1.6Using Side-Chain (272)7.1.7Moving Plug-ins (272)7.1.8Alternative: the Plug-in Strip (273)7.1.9Saving and Recalling Plug-in Presets (273)7.1.9.1Saving Plug-in Presets (274)7.1.9.2Recalling Plug-in Presets (275)7.1.9.3Removing a Default Plug-in Preset (276)7.2The Sampler Plug-in (277)7.2.1Page 1: Voice Settings / Engine (279)7.2.2Page 2: Pitch / Envelope (281)7.2.3Page 3: FX / Filter (283)7.2.4Page 4: Modulation (285)7.2.5Page 5: LFO (286)7.2.6Page 6: Velocity / Modwheel (288)7.3Using Native Instruments and External Plug-ins (289)7.3.1Opening/Closing Plug-in Windows (289)7.3.2Using the VST/AU Plug-in Parameters (292)7.3.3Setting Up Your Own Parameter Pages (293)7.3.4Using VST/AU Plug-in Presets (298)7.3.5Multiple-Output Plug-ins and Multitimbral Plug-ins (300)8Using the Audio Plug-in (302)8.1Loading a Loop into the Audio Plug-in (306)8.2Editing Audio in the Audio Plug-in (307)8.3Using Loop Mode (308)8.4Using Gate Mode (310)9Using the Drumsynths (312)9.1Drumsynths – General Handling (313)9.1.1Engines: Many Different Drums per Drumsynth (313)9.1.2Common Parameter Organization (313)9.1.3Shared Parameters (316)9.1.4Various Velocity Responses (316)9.1.5Pitch Range, Tuning, and MIDI Notes (316)9.2The Kicks (317)9.2.1Kick – Sub (319)9.2.2Kick – Tronic (321)9.2.3Kick – Dusty (324)9.2.4Kick – Grit (325)9.2.5Kick – Rasper (328)9.2.6Kick – Snappy (329)9.2.7Kick – Bold (331)9.2.8Kick – Maple (333)9.2.9Kick – Push (334)9.3The Snares (336)9.3.1Snare – Volt (338)9.3.2Snare – Bit (340)9.3.3Snare – Pow (342)9.3.4Snare – Sharp (343)9.3.5Snare – Airy (345)9.3.6Snare – Vintage (347)9.3.7Snare – Chrome (349)9.3.8Snare – Iron (351)9.3.9Snare – Clap (353)9.3.10Snare – Breaker (355)9.4The Hi-hats (357)9.4.1Hi-hat – Silver (358)9.4.2Hi-hat – Circuit (360)9.4.3Hi-hat – Memory (362)9.4.4Hi-hat – Hybrid (364)9.4.5Creating a Pattern with Closed and Open Hi-hats (366)9.5The Toms (367)9.5.1Tom – Tronic (369)9.5.2Tom – Fractal (371)9.5.3Tom – Floor (375)9.5.4Tom – High (377)9.6The Percussions (378)9.6.1Percussion – Fractal (380)9.6.2Percussion – Kettle (383)9.6.3Percussion – Shaker (385)9.7The Cymbals (389)9.7.1Cymbal – Crash (391)9.7.2Cymbal – Ride (393)10Using the Bass Synth (396)10.1Bass Synth – General Handling (397)10.1.1Parameter Organization (397)10.1.2Bass Synth Parameters (399)11Working with Patterns (401)11.1Pattern Basics (401)11.1.1Pattern Editor Overview (402)11.1.2Navigating the Event Area (404)11.1.3Following the Playback Position in the Pattern (406)11.1.4Jumping to Another Playback Position in the Pattern (407)11.1.5Group View and Keyboard View (408)11.1.6Adjusting the Arrange Grid and the Pattern Length (410)11.1.7Adjusting the Step Grid and the Nudge Grid (413)11.2Recording Patterns in Real Time (416)11.2.1Recording Your Patterns Live (417)11.2.2Using the Metronome (419)11.2.3Recording with Count-in (420)11.3Recording Patterns with the Step Sequencer (422)11.3.1Step Mode Basics (422)11.3.2Editing Events in Step Mode (424)11.4Editing Events (425)11.4.1Editing Events with the Mouse: an Overview (425)11.4.2Creating Events/Notes (428)11.4.3Selecting Events/Notes (429)11.4.4Editing Selected Events/Notes (431)11.4.5Deleting Events/Notes (434)11.4.6Cut, Copy, and Paste Events/Notes (436)11.4.7Quantizing Events/Notes (439)11.4.8Quantization While Playing (441)11.4.9Doubling a Pattern (442)11.4.10Adding Variation to Patterns (442)11.5Recording and Editing Modulation (443)11.5.1Which Parameters Are Modulatable? (444)11.5.2Recording Modulation (446)11.5.3Creating and Editing Modulation in the Control Lane (447)11.6Creating MIDI Tracks from Scratch in MASCHINE (452)11.7Managing Patterns (454)11.7.1The Pattern Manager and Pattern Mode (455)11.7.2Selecting Patterns and Pattern Banks (456)11.7.3Creating Patterns (459)11.7.4Deleting Patterns (460)11.7.5Creating and Deleting Pattern Banks (461)11.7.6Naming Patterns (463)11.7.7Changing the Pattern’s Color (465)11.7.8Duplicating, Copying, and Pasting Patterns (466)11.7.9Moving Patterns (469)11.8Importing/Exporting Audio and MIDI to/from Patterns (470)11.8.1Exporting Audio from Patterns (470)11.8.2Exporting MIDI from Patterns (472)11.8.3Importing MIDI to Patterns (474)12Audio Routing, Remote Control, and Macro Controls (483)12.1Audio Routing in MASCHINE (484)12.1.1Sending External Audio to Sounds (485)12.1.2Configuring the Main Output of Sounds and Groups (489)12.1.3Setting Up Auxiliary Outputs for Sounds and Groups (494)12.1.4Configuring the Master and Cue Outputs of MASCHINE (497)12.1.5Mono Audio Inputs (502)12.1.5.1Configuring External Inputs for Sounds in Mix View (503)12.2Using MIDI Control and Host Automation (506)12.2.1Triggering Sounds via MIDI Notes (507)12.2.2Triggering Scenes via MIDI (513)12.2.3Controlling Parameters via MIDI and Host Automation (514)12.2.4Selecting VST/AU Plug-in Presets via MIDI Program Change (522)12.2.5Sending MIDI from Sounds (523)12.3Creating Custom Sets of Parameters with the Macro Controls (527)12.3.1Macro Control Overview (527)12.3.2Assigning Macro Controls Using the Software (528)13Controlling Your Mix (535)13.1Mix View Basics (535)13.1.1Switching between Arrange View and Mix View (535)13.1.2Mix View Elements (536)13.2The Mixer (537)13.2.1Displaying Groups vs. Displaying Sounds (539)13.2.2Adjusting the Mixer Layout (541)13.2.3Selecting Channel Strips (542)13.2.4Managing Your Channels in the Mixer (543)13.2.5Adjusting Settings in the Channel Strips (545)13.2.6Using the Cue Bus (549)13.3The Plug-in Chain (551)13.4The Plug-in Strip (552)13.4.1The Plug-in Header (554)13.4.2Panels for Drumsynths and Internal Effects (556)13.4.3Panel for the Sampler (557)13.4.4Custom Panels for Native Instruments Plug-ins (560)13.4.5Undocking a Plug-in Panel (Native Instruments and External Plug-ins Only) (564)14Using Effects (567)14.1Applying Effects to a Sound, a Group or the Master (567)14.1.1Adding an Effect (567)14.1.2Other Operations on Effects (574)14.1.3Using the Side-Chain Input (575)14.2Applying Effects to External Audio (578)14.2.1Step 1: Configure MASCHINE Audio Inputs (578)14.2.2Step 2: Set up a Sound to Receive the External Input (579)14.2.3Step 3: Load an Effect to Process an Input (579)14.3Creating a Send Effect (580)14.3.1Step 1: Set Up a Sound or Group as Send Effect (581)14.3.2Step 2: Route Audio to the Send Effect (583)14.3.3 A Few Notes on Send Effects (583)14.4Creating Multi-Effects (584)15Effect Reference (587)15.1Dynamics (588)15.1.1Compressor (588)15.1.2Gate (591)15.1.3Transient Master (594)15.1.4Limiter (596)15.1.5Maximizer (600)15.2Filtering Effects (603)15.2.1EQ (603)15.2.2Filter (605)15.2.3Cabinet (609)15.3Modulation Effects (611)15.3.1Chorus (611)15.3.2Flanger (612)15.3.3FM (613)15.3.4Freq Shifter (615)15.3.5Phaser (616)15.4Spatial and Reverb Effects (617)15.4.1Ice (617)15.4.2Metaverb (619)15.4.3Reflex (620)15.4.4Reverb (Legacy) (621)15.4.5Reverb (623)15.4.5.1Reverb Room (623)15.4.5.2Reverb Hall (626)15.4.5.3Plate Reverb (629)15.5Delays (630)15.5.1Beat Delay (630)15.5.2Grain Delay (632)15.5.3Grain Stretch (634)15.5.4Resochord (636)15.6Distortion Effects (638)15.6.1Distortion (638)15.6.2Lofi (640)15.6.3Saturator (641)15.7Perform FX (645)15.7.1Filter (646)15.7.2Flanger (648)15.7.3Burst Echo (650)15.7.4Reso Echo (653)15.7.5Ring (656)15.7.6Stutter (658)15.7.7Tremolo (661)15.7.8Scratcher (664)16Working with the Arranger (667)16.1Arranger Basics (667)16.1.1Navigating Song View (670)16.1.2Following the Playback Position in Your Project (672)16.1.3Performing with Scenes and Sections using the Pads (673)16.2Using Ideas View (677)16.2.1Scene Overview (677)16.2.2Creating Scenes (679)16.2.3Assigning and Removing Patterns (679)16.2.4Selecting Scenes (682)16.2.5Deleting Scenes (684)16.2.6Creating and Deleting Scene Banks (685)16.2.7Clearing Scenes (685)16.2.8Duplicating Scenes (685)16.2.9Reordering Scenes (687)16.2.10Making Scenes Unique (688)16.2.11Appending Scenes to Arrangement (689)16.2.12Naming Scenes (689)16.2.13Changing the Color of a Scene (690)16.3Using Song View (692)16.3.1Section Management Overview (692)16.3.2Creating Sections (694)16.3.3Assigning a Scene to a Section (695)16.3.4Selecting Sections and Section Banks (696)16.3.5Reorganizing Sections (700)16.3.6Adjusting the Length of a Section (702)16.3.6.1Adjusting the Length of a Section Using the Software (703)16.3.6.2Adjusting the Length of a Section Using the Controller (705)16.3.7Clearing a Pattern in Song View (705)16.3.8Duplicating Sections (705)16.3.8.1Making Sections Unique (707)16.3.9Removing Sections (707)16.3.10Renaming Scenes (708)16.3.11Clearing Sections (710)16.3.12Creating and Deleting Section Banks (710)16.3.13Working with Patterns in Song view (710)16.3.13.1Creating a Pattern in Song View (711)16.3.13.2Selecting a Pattern in Song View (711)16.3.13.3Clearing a Pattern in Song View (711)16.3.13.4Renaming a Pattern in Song View (711)16.3.13.5Coloring a Pattern in Song View (712)16.3.13.6Removing a Pattern in Song View (712)16.3.13.7Duplicating a Pattern in Song View (712)16.3.14Enabling Auto Length (713)16.3.15Looping (714)16.3.15.1Setting the Loop Range in the Software (714)16.3.15.2Activating or Deactivating a Loop Using the Controller (715)16.4Playing with Sections (715)16.4.1Jumping to another Playback Position in Your Project (716)16.5Triggering Sections or Scenes via MIDI (717)16.6The Arrange Grid (719)16.7Quick Grid (720)17Sampling and Sample Mapping (722)17.1Opening the Sample Editor (722)17.2Recording Audio (724)17.2.1Opening the Record Page (724)17.2.2Selecting the Source and the Recording Mode (725)17.2.3Arming, Starting, and Stopping the Recording (729)17.2.5Checking Your Recordings (731)17.2.6Location and Name of Your Recorded Samples (734)17.3Editing a Sample (735)17.3.1Using the Edit Page (735)17.3.2Audio Editing Functions (739)17.4Slicing a Sample (743)17.4.1Opening the Slice Page (743)17.4.2Adjusting the Slicing Settings (744)17.4.3Manually Adjusting Your Slices (746)17.4.4Applying the Slicing (750)17.5Mapping Samples to Zones (754)17.5.1Opening the Zone Page (754)17.5.2Zone Page Overview (755)17.5.3Selecting and Managing Zones in the Zone List (756)17.5.4Selecting and Editing Zones in the Map View (761)17.5.5Editing Zones in the Sample View (765)17.5.6Adjusting the Zone Settings (767)17.5.7Adding Samples to the Sample Map (770)18Appendix: Tips for Playing Live (772)18.1Preparations (772)18.1.1Focus on the Hardware (772)18.1.2Customize the Pads of the Hardware (772)18.1.3Check Your CPU Power Before Playing (772)18.1.4Name and Color Your Groups, Patterns, Sounds and Scenes (773)18.1.5Consider Using a Limiter on Your Master (773)18.1.6Hook Up Your Other Gear and Sync It with MIDI Clock (773)18.1.7Improvise (773)18.2Basic Techniques (773)18.2.1Use Mute and Solo (773)18.2.2Create Variations of Your Drum Patterns in the Step Sequencer (774)18.2.3Use Note Repeat (774)18.2.4Set Up Your Own Multi-effect Groups and Automate Them (774)18.3Special Tricks (774)18.3.1Changing Pattern Length for Variation (774)18.3.2Using Loops to Cycle Through Samples (775)18.3.3Load Long Audio Files and Play with the Start Point (775)19Troubleshooting (776)19.1Knowledge Base (776)19.2Technical Support (776)19.3Registration Support (777)19.4User Forum (777)20Glossary (778)Index (786)1Welcome to MASCHINEThank you for buying MASCHINE!MASCHINE is a groove production studio that implements the familiar working style of classi-cal groove boxes along with the advantages of a computer based system. MASCHINE is ideal for making music live, as well as in the studio. It’s the hands-on aspect of a dedicated instru-ment, the MASCHINE hardware controller, united with the advanced editing features of the MASCHINE software.Creating beats is often not very intuitive with a computer, but using the MASCHINE hardware controller to do it makes it easy and fun. You can tap in freely with the pads or use Note Re-peat to jam along. Alternatively, build your beats using the step sequencer just as in classic drum machines.Patterns can be intuitively combined and rearranged on the fly to form larger ideas. You can try out several different versions of a song without ever having to stop the music.Since you can integrate it into any sequencer that supports VST, AU, or AAX plug-ins, you can reap the benefits in almost any software setup, or use it as a stand-alone application. You can sample your own material, slice loops and rearrange them easily.However, MASCHINE is a lot more than an ordinary groovebox or sampler: it comes with an inspiring 7-gigabyte library, and a sophisticated, yet easy to use tag-based Browser to give you instant access to the sounds you are looking for.What’s more, MASCHINE provides lots of options for manipulating your sounds via internal ef-fects and other sound-shaping possibilities. You can also control external MIDI hardware and 3rd-party software with the MASCHINE hardware controller, while customizing the functions of the pads, knobs and buttons according to your needs utilizing the included Controller Editor application. We hope you enjoy this fantastic instrument as much as we do. Now let’s get go-ing!—The MASCHINE team at Native Instruments.MASCHINE Documentation1.1MASCHINE DocumentationNative Instruments provide many information sources regarding MASCHINE. The main docu-ments should be read in the following sequence:1.MASCHINE MIKRO Quick Start Guide: This animated online guide provides a practical ap-proach to help you learn the basic of MASCHINE MIKRO. The guide is available from theNative Instruments website: https:///maschine-mikro-quick-start/2.MASCHINE Manual (this document): The MASCHINE Manual provides you with a compre-hensive description of all MASCHINE software and hardware features.Additional documentation sources provide you with details on more specific topics:►Online Support Videos: You can find a number of support videos on The Official Native In-struments Support Channel under the following URL: https:///NIsupport-EN. We recommend that you follow along with these instructions while the respective ap-plication is running on your computer.Other Online Resources:If you are experiencing problems related to your Native Instruments product that the supplied documentation does not cover, there are several ways of getting help:▪Knowledge Base▪User Forum▪Technical Support▪Registration SupportYou will find more information on these subjects in the chapter Troubleshooting.Document Conventions1.2Document ConventionsThis section introduces you to the signage and text highlighting used in this manual. This man-ual uses particular formatting to point out special facts and to warn you of potential issues.The icons introducing these notes let you see what kind of information is to be expected:This document uses particular formatting to point out special facts and to warn you of poten-tial issues. The icons introducing the following notes let you see what kind of information canbe expected:Furthermore, the following formatting is used:▪Text appearing in (drop-down) menus (such as Open…, Save as… etc.) in the software andpaths to locations on your hard disk or other storage devices is printed in italics.▪Text appearing elsewhere (labels of buttons, controls, text next to checkboxes etc.) in thesoftware is printed in blue. Whenever you see this formatting applied, you will find thesame text appearing somewhere on the screen.▪Text appearing on the displays of the controller is printed in light grey. Whenever you seethis formatting applied, you will find the same text on a controller display.▪Text appearing on labels of the hardware controller is printed in orange. Whenever you seethis formatting applied, you will find the same text on the controller.▪Important names and concepts are printed in bold.▪References to keys on your computer’s keyboard you’ll find put in square brackets (e.g.,“Press [Shift] + [Enter]”).►Single instructions are introduced by this play button type arrow.→Results of actions are introduced by this smaller arrow.Naming ConventionThroughout the documentation we will refer to MASCHINE controller (or just controller) as the hardware controller and MASCHINE software as the software installed on your computer.The term “effect” will sometimes be abbreviated as “FX” when referring to elements in the MA-SCHINE software and hardware. These terms have the same meaning.Button Combinations and Shortcuts on Your ControllerMost instructions will use the “+” sign to indicate buttons (or buttons and pads) that must be pressed simultaneously, starting with the button indicated first. E.g., an instruction such as:“Press SHIFT + PLAY”means:1.Press and hold SHIFT.2.While holding SHIFT, press PLAY and release it.3.Release SHIFT.1.3New Features in MASCHINE2.8The following new features have been added to MASCHINE: Integration▪Browse on , create your own collections of loops and one-shots and send them directly to the MASCHINE browser.Improvements to the Browser▪Samples are now cataloged in separate Loops and One-shots tabs in the Browser.▪Previews of loops selected in the Browser will be played in sync with the current project.When a loop is selected with Prehear turned on, it will begin playing immediately in-sync with the project if transport is running. If a loop preview starts part-way through the loop, the loop will play once more for its full length to ensure you get to hear the entire loop once in context with your project.▪Filters and product selections will be remembered when switching between content types and Factory/User Libraries in the Browser.▪Browser content synchronization between multiple running instances. When running multi-ple instances of MASCHINE, either as Standalone and/or as a plug-in, updates to the Li-brary will be synced across the instances. For example, if you delete a sample from your User Library in one instance, the sample will no longer be present in the other instances.Similarly, if you save a preset in one instance, that preset will then be available in the oth-er instances, too.▪Edits made to samples in the Factory Libraries will be saved to the Standard User Directo-ry.For more information on these new features, refer to the following chapter ↑4, Browser. Improvements to the MASCHINE MIKRO MK3 Controller▪You can now set sample Start and End points using the controller. For more information refer to ↑17.3.1, Using the Edit Page.Improved Support for A-Series Keyboards▪When Browsing with A-Series keyboards, you can now jump quickly to the results list by holding SHIFT and pushing right on the 4D Encoder.▪When Browsing with A-Series keyboards, you can fast scroll through the Browser results list by holding SHIFT and twisting the 4D Encoder.▪Mute and Solo Sounds and Groups from A-Series keyboards. Sounds are muted in TRACK mode while Groups are muted in IDEAS.。

在Android开发中，我们经常会用到sharepreferences来进行数据的存储和管理。

而有时候我们可能会需要知道这些存储的数据到底是放在哪个路径下的，今天我将为您详细解释sharepreferences存储路径的相关知识。

1. 什么是sharepreferencesSharepreferences是Android中一种轻量级的数据存储方式，用来保存一些简单的配置信息。

它基于键值对（key-value）的方式进行数据的存储，可以存储基本数据类型和字符串。

在Android中，每个应用都有自己的sharepreferences存储空间，相互之间不会互相干扰。

通过sharepreferences，我们可以方便地进行数据的读取和修改。

2. sharepreferences存储路径在Android中，sharepreferences的数据是存储在每个应用的私有目录下的。

具体来说，它存储在/data/data/包名/shared_prefs/目录下，其中“包名”表示你的应用在Android系统中的唯一标识。

在这个目录下，每个sharepreferences文件都以XML格式存储，文件名就是你所创建的sharepreferences的名称。

这种私有目录的设计保证了应用数据的安全性和隐私性。

3. 为什么需要了解sharepreferences存储路径了解sharepreferences存储路径对于开发者来说是十分重要的。

当我们需要查看或导出sharepreferences存储的数据时，就需要知道它的存储路径。

如果我们的应用需要卸载或者清除数据时，也需要知道这个路径。

另外，有时我们可能会需要手动修改sharepreferences存储的数据，这时也需要知道存储路径。

了解sharepreferences存储路径可以帮助我们更好地进行应用开发和调试。

4. 如何访问sharepreferences存储路径在Android开发中，我们可以通过adb命令来访问sharepreferences存储路径。

数据存储SharePreferences详解1.SharedPreferences存储SharedPreferences时使⽤键值对的⽅式来存储数据的，也就是在保存⼀条数据时，需要给这条数据提供⼀个对应的键，这样在读取的时候就可以通过这个键把相应的值取出来SharePreferences是⼀个接⼝，不能直接使⽤，但可以通过以下两种⽅法获得：1.1.1Context类的getSharePreferences(String name ,ine mode)⽅法来获得⼀个SharePreferences对象：此⽅法接收两个参数，第⼀个参数⽤于指定SharedPreference⽂件的名称，即存储XML⽂件的名称，如果存在，则会直接引⽤，如果指定的⽂件不存在则会创建⼀个，SharedPreference⽂件都是存放在/data/data/<包名>/shared_prefs/存储的XML⽂件⽬录下，第⼆个参数表⽰⽂件的存储模式（该⽅式创建的XML⽂件可以被同⼀个软件的Activity引⽤）。

⽂件的⼏种存储模式：MODE_PRIVATE：表⽰私有⽂佳，该⽂件智能被创建他的⽂件所访问MODE_APPEND:表⽰新的存储内容会添加在原有⽂件内容的后⾯。

MODE_WORLD_READABLE：表⽰该⽂件能被所有的⽂件读取，但是不可以写⼊。

MODE_WORLD_WEITABLE：表⽰该⽂件能被所有的⽂件写⼊，也可以读取MODE_MULTI_PROCESS：表⽰改⽂件可以被多个进程同时访问，适⽤于Android2.3及之后的版本。

1.1.2：调⽤Activity对象的getPreferences(int mode)⽅法该⽅法有⼀个参数，表⽰⽂件的存储模式，具体模式童第轶中相同，这种⽅法获得的对象只能被该⽅法所在的Activity所调⽤1.2还要创建⼀个SharePreferences.Editor类的对象，该类负责具体的写⼊操作，创建⽅法使通过SharePreferences类的edit()⽅法来创建。

电脑上preferences的意思全文共四篇示例，供读者参考第一篇示例：电脑上preferences的意思在计算机术语中，preferences指的是用户可以根据自己的需求和喜好来设置的各种选项和配置。

每个操作系统、软件程序或应用程序都会提供一些preferences选项，让用户根据自己的使用习惯来调整不同的设置。

通过preferences，用户可以个性化自己的电脑系统或软件，使其更符合自己的需求，提高工作效率和使用体验。

在计算机操作系统中，preferences通常包括系统设置、外观和行为、安全和隐私、网络和连接、声音和通知等选项。

用户可以通过操作系统的preferences来调整屏幕分辨率、桌面背景、鼠标和键盘设置、电源管理、网络连接、声音设置等。

用户还可以设置自己的偏好语言、时间和日期格式、字体大小和显示选项等。

通过调整这些preferences，用户可以个性化自己的电脑系统，使其更易用、更舒适。

在各种软件程序和应用程序中，preferences也扮演着重要的角色。

不同的软件程序提供了不同的preferences选项，让用户可以根据自己的需求和使用习惯来调整软件的功能和界面。

文字处理软件可以让用户设置默认字体、默认对齐方式、自动保存间隔等选项；音乐播放器可以让用户设置音效、播放列表、背景颜色等选项；浏览器可以让用户设置主页、隐私设置、cookie管理等选项。

通过调整这些preferences，用户可以定制自己最喜欢的软件环境，提高工作效率和娱乐体验。

除了系统和软件的preferences，一些网站和在线服务也提供了个性化设置选项，让用户可以根据自己的需求来定制服务。

社交媒体网站可以让用户设置隐私设置、消息通知、个人资料信息等选项；电子商务网站可以让用户设置支付方式、配送地址、购物车管理等选项。

通过调整这些网站和在线服务的preferences，用户可以更好地控制自己的个人信息和账户安全，提高网上购物和社交体验。

flutter shared_preferences 单例`shared_preferences`主要的作用是用于将数据异步持久化到磁盘，在`Flutter`中，可以通过`sharedPreferences`的实例化对象调用对应的`set`方法设置持久化数据，通过`sharedPreferences`的实例化对象调用对应的`get`方法读取持久化数据。

以下是一个`shared_preferences`的使用案例：```dartimport 'package:shared_preferences/shared_preferences.dart';class TestPersistent extends StatefulWidget {final String title;TestPersistent({Key key, this.title});@overrideState<StatefulWidget> createState() {// TODO: implement createStatereturn TestPersistentState();}class TestPersistentState extends State<TestPersistent> {var controller = TextEditingController();Future<SharedPreferences> _prefs = SharedPreferences.getInstance();bool mt = false;bool ds = false;bool ltb = false;@overridevoid initState() {// TODO: implement initStatesuper.initState();initFromCache();}@overridevoid dispose() {// TODO: implement disposesuper.dispose();controller = null;}// 从缓存中获取信息填充void initFromCache() async {final SharedPreferences prefs = await _prefs;final nickname = prefs.getString("nickname");final mt = prefs.getBool("mt");final ds = prefs.getBool("ds");final ltb = prefs.getBool("ltb");// 获取到缓存中的值后，使用setState 更新界面信息setState(() {controller.text = (nickname == null ? " " : nickname); this.mt = (mt == null ? false : mt);this.ds = (ds == null ? false : ds);this.ltb = (ltb == null ? false : ltb);});}// 保存界面的输入选择信息void saveInfo(String nickname) async {final SharedPreferences prefs = await _prefs;prefs.setString("nickname", nickname);prefs.setBool("mt", mt);prefs.setBool("ds", ds);}}}```上述代码实现了`shared_preferences`单例模式的使用，具体描述如下：- 通过`SharedPreferences.getInstance`获取`shared_preferences`的单例对象。

flutter sharedpreferences用法Flutter中SharedPreferences是一种轻量级的本地存储方式，可以存储简单的键值对数据，如用户设置、用户偏好等。

它可以在应用程序关闭后仍然保留数据，直到用户明确地删除该数据。

下面是SharedPreferences的用法：1. 导入SharedPreferences包import'package:shared_preferences/shared_preferences.dart';2. 实例化SharedPreferences对象SharedPreferences prefs = awaitSharedPreferences.getInstance();3. 存储数据设置键值对数据prefs.setString('key', 'value');设置整型数据prefs.setInt('key', 1);设置浮点型数据prefs.setDouble('key', 1.0);设置布尔型数据prefs.setBool('key', true);设置字符串列表型数据prefs.setStringList('key', ['value1', 'value2']);4. 获取数据获取键值对数据String value = prefs.getString('key');获取整型数据int value = prefs.getInt('key');获取浮点型数据double value = prefs.getDouble('key');获取布尔型数据bool value = prefs.getBool('key');获取字符串列表型数据List<String> value = prefs.getStringList('key');5. 删除数据删除指定键值对数据prefs.remove('key');删除所有数据prefs.clear();SharedPreferences是一种非常方便的本地存储方式，可以在应用程序关闭后保留数据，并且不占用太多存储空间。

flutter share.share 标题1.使用flutter share.share插件实现分享功能2.快速集成分享功能到你的Flutter应用3.一键分享内容到社交媒体平台4.实现一站式分享解决方案5.无缝集成分享功能，提升用户体验6.轻松实现分享到微信、QQ、微博等平台7.自定义分享内容，让每一次分享都独一无二8.享受便捷的分享体验，让你的应用更具互动性9.通过分享功能，扩大应用的影响力和知名度10.分享是推广的最佳工具之一，快速分享，助力业务增长11.分享功能在现代应用中的重要性12.为你的应用添加社交分享功能吸引更多用户13.分享功能是用户留存率的关键驱动力14.分享功能，让你的应用与其他应用互通有无15.增加用户粘性，提高用户参与度的有效途径16.分享内容策略，让你的应用变得爆款17.理解用户需求，灵活应对分享场景18.分享功能的设计原则与最佳实践19.利用分享功能吸引用户互动和用户生成内容20.分享带来更多下载量，让你的应用更赚钱21.我们的分享标题22.让你的好友也来感受Flutter之美23.通过简洁的代码实现分享功能24.提供丰富的分享选项25.让分享变得更加简单快捷26.快速将内容分享到各种社交平台27.定制分享内容，展现个性化风格28.满足用户分享需求，畅享社交乐趣29.无需担心分享功能的兼容性问题30.轻松实现跨平台分享31.分享按钮一键搞定32.既省时又省力的分享解决方案33.分享功能嵌入应用，提升用户粘性34.社交平台分享功能集合35.让用户快速传播精彩内容36.让好友一起来体验你的应用37.分享功能扩展，更多选择等你探索38.通用的分享代码，适配各种场景39.提供简单易用的分享接口40.让用户分享畅快，推广效果倍增41.分享文本内容到社交媒体，与朋友分享您的心情和想法。

42.方便的分享功能，只需一行代码，即可实现分享功能。

43.自定义分享内容，灵活满足您的分享需求。