Android下保存简单⽹页到本地（包括简单图⽚链接转换）实现代码最近在做⼀个项⽬涉及到将包含图⽚的简单⽹页下载到本地，⽅便离线时观看，在这⾥分享⼀下，⼤家做下简单修改就可以⽤到⾃⼰的项⽬中了。
（这⾥⽤到了AQuery库）复制代码代码如下:package com.nekocode.xuedao.utils;import java.io.File;import java.io.FileOutputStream;import java.util.ArrayList;import java.util.regex.Matcher;import java.util.regex.Pattern;import android.content.ContentValues;import android.content.Context;import android.database.Cursor;import android.database.sqlite.SQLiteDatabase;import com.androidquery.AQuery;import com.androidquery.callback.AjaxCallback;import com.androidquery.callback.AjaxStatus;import com.nekocode.xuedao.PublicData;import com.nekocode.xuedao.PublicData.Subscribe;public class HtmlStorageHelper {private String URL = "/fetchurl.php/getcontent/";private PublicData pd;private AQuery aq;private SQLiteDatabase mDB;private String mDownloadPath;public HtmlStorageHelper(Context context) {pd = PublicData.getInstance();aq = new AQuery(context);mDB = context.openOrCreateDatabase("data.db", Context.MODE_PRIVATE, null);mDB.execSQL("create table if not exists download_html(_id INTEGER PRIMARY KEY AUTOINCREMENT, content_id TEXTNOT NULL, title TEXT NOT NULL)");mDownloadPath = pd.mAppPath + "download/";File dir_file = new File(pd.mAppPath + "download/");if(!dir_file.exists())dir_file.mkdir();}public void saveHtml(final String id, final String title) {if(isHtmlSaved(id))return;aq.ajax(URL+id, String.class, new AjaxCallback<String>() {@Overridepublic void callback(String url, String html, AjaxStatus status) {File dir_file = new File(mDownloadPath + id);if(!dir_file.exists())dir_file.mkdir();Pattern pattern = pile("(?<=src=\")[^\"]+(?=\")");Matcher matcher = pattern.matcher(html);StringBuffer sb = new StringBuffer();while(matcher.find()){downloadPic(id, matcher.group(0));matcher.appendReplacement(sb, formatPath(matcher.group(0))); }matcher.appendTail(sb);html = sb.toString();writeHtml(id, title, html);}});}private void downloadPic(String id, String url) {File pic_file = new File(mDownloadPath + id + "/" + formatPath(url)); aq.download(url, pic_file, new AjaxCallback<File>() {@Overridepublic void callback(String url, final File file, AjaxStatus status) {}});}private void writeHtml(String id, String title, String html) {File html_file = new File(mDownloadPath + id + "/index.html");FileOutputStream fos = null;try {fos=new FileOutputStream(html_file);fos.write(html.getBytes());} catch (Exception e) {e.printStackTrace();}finally{try {fos.close();} catch (Exception e2) {e2.printStackTrace();}}ContentValues values = new ContentValues();values.put("content_id", id);values.put("title", title);mDB.insert("download_html", "_id", values);}public boolean isHtmlSaved(String id) {File file = new File(mDownloadPath + id);if(file.exists()) {file = new File(mDownloadPath + id + "/index.html");if(file.exists())return true;}deleteHtml(id);return false;}public String getTitle(String id) {Cursor c = mDB.rawQuery("select * from download_html where content_id=?", new String[]{id}); if(c.getCount() == 0)return null;c.moveToFirst();int index1 = c.getColumnIndex("title");return c.getString(index1);}public ArrayList<Subscribe> getHtmlList() {Cursor c = mDB.rawQuery("select * from download_html", null);ArrayList<Subscribe> list = new ArrayList<Subscribe>();if(c.getCount() != 0) {c.moveToFirst();int index1 = c.getColumnIndex("content_id");int index2 = c.getColumnIndex("title");while (!c.isAfterLast()) {String id = c.getString(index1);if(isHtmlSaved(id)) {Subscribe sub = new Subscribe(id,c.getString(index2),Subscribe.FILE_DOWNLOADED);list.add(sub);}c.moveToNext();}}return list;}public void deleteHtml(String id) {mDB.delete("download_html", "content_id=?", new String[]{id});File dir_file = new File(mDownloadPath + id);deleteFile(dir_file);}private void deleteFile(File file) {if (file.exists()) { // 判断⽂件是否存在if (file.isFile()) { // 判断是否是⽂件file.delete(); // delete()⽅法你应该知道是删除的意思;} else if (file.isDirectory()) { // 否则如果它是⼀个⽬录File files[] = file.listFiles(); // 声明⽬录下所有的⽂件 files[];for (int i = 0; i < files.length; i++) { // 遍历⽬录下所有的⽂件this.deleteFile(files[i]); // 把每个⽂件⽤这个⽅法进⾏迭代}}file.delete();} else {//}}private String formatPath(String path) { if (path != null && path.length() > 0) { path = path.replace("\\", "_");path = path.replace("/", "_");path = path.replace(":", "_");path = path.replace("*", "_");path = path.replace("?", "_");path = path.replace("\"", "_");path = path.replace("<", "_");path = path.replace("|", "_");path = path.replace(">", "_");}return path;}}。
