android 应用更新功能 检测更新 自动下载安装 demo updatedemo

package com.tutor.update; import java.io.File; import java.io.FileOutputStream; import java.io.IOException; import java.io.InputStream; import java.net.HttpURLConnection; import java.net.MalformedURLException; import java.net.URL; import android.app.AlertDialog; import android.app.Dialog; import android.app.AlertDialog.Builder; import android.content.Context; import android.content.DialogInterface; import android.content.Intent; import android.content.DialogInterface.OnClickListener; import android.net.Uri; import android.os.Handler; import android.os.Message; import android.view.LayoutInflater; import android.view.View; import android.widget.ProgressBar; public class UpdateManager { private Context mContext; //提示语 private String updateMsg = "有最新的软件包哦，亲快下载吧~"; //返回的安装包url private String apkUrl = "http://softfile.3g.qq.com:8080/msoft/179/24659/43549/qq_hd_mini_1.4.apk"; private Dialog noticeDialog; private Dialog downloadDialog; /* 下载包安装路径 */ private static final String savePath = "/sdcard/updatedemo/"; private static final String saveFileName = savePath + "UpdateDemoRelease.apk"; /* 进度条与通知ui刷新的handler和msg常量 */ private ProgressBar mProgress; private static final int DOWN_UPDATE = 1; private static final int DOWN_OVER = 2; private int progress; private Thread downLoadThread; private boolean interceptFlag = false; private Handler mHandler = new Handler(){ public void handleMessage(Message msg) { switch (msg.what) { case DOWN_UPDATE: mProgress.setProgress(progress); break; case DOWN_OVER: installApk(); break; default: break; } }; }; public UpdateManager(Context context) { this.mContext = context; } //外部接口让主Activity调用 public void checkUpdateInfo(){ showNoticeDialog(); } private void showNoticeDialog(){ AlertDialog.Builder builder = new Builder(mContext); builder.setTitle("软件版本更新"); builder.setMessage(updateMsg); builder.setPositiveButton("下载", new OnClickListener() { @Override public void onClick(DialogInterface dialog, int which) { dialog.dismiss(); showDownloadDialog(); } }); builder.setNegativeButton("以后再说", new OnClickListener() { @Override public void onClick(DialogInterface dialog, int which) { dialog.dismiss(); } }); noticeDialog = builder.create(); noticeDialog.show(); } private void showDownloadDialog(){ AlertDialog.Builder builder = new Builder(mContext); builder.setTitle("软件版本更新"); final LayoutInflater inflater = LayoutInflater.from(mContext); View v = inflater.inflate(R.layout.progress, null); mProgress = (ProgressBar)v.findViewById(R.id.progress); builder.setView(v); builder.setNegativeButton("取消", new OnClickListener() { @Override public void onClick(DialogInterface dialog, int which) { dialog.dismiss(); interceptFlag = true; } }); downloadDialog = builder.create(); downloadDialog.show(); downloadApk(); } private Runnable mdownApkRunnable = new Runnable() { @Override public void run() { try { URL url = new URL(apkUrl); HttpURLConnection conn = (HttpURLConnection)url.openConnection(); conn.connect(); int length = conn.getContentLength(); InputStream is = conn.getInputStream(); File file = new File(savePath); if(!file.exists()){ file.mkdir(); } String apkFile = saveFileName; File ApkFile = new File(apkFile); FileOutputStream fos = new FileOutputStream(ApkFile); int count = 0; byte buf[] = new byte[1024]; do{ int numread = is.read(buf); count += numread; progress =(int)(((float)count / length) * 100); //更新进度 mHandler.sendEmptyMessage(DOWN_UPDATE); if(numread <= 0){ //下载完成通知安装 mHandler.sendEmptyMessage(DOWN_OVER); break; } fos.write(buf,0,numread); }while(!interceptFlag);//点击取消就停止下载. fos.close(); is.close(); } catch (MalformedURLException e) { e.printStackTrace(); } catch(IOException e){ e.printStackTrace(); } } }; /** * 下载apk * @param url */ private void downloadApk(){ downLoadThread = new Thread(mdownApkRunnable); downLoadThread.start(); } /** * 安装apk * @param url */ private void installApk(){ File apkfile = new File(saveFileName); if (!apkfile.exists()) { return; } Intent i = new Intent(Intent.ACTION_VIEW); i.setDataAndType(Uri.parse("file://" + apkfile.toString()), "application/vnd.android.package-archive"); mContext.startActivity(i); } }