Android 带进度条自动下载Apk并自动安装

1.首先注册下载完成后的广播

DownloadCompleteReceiver receiver = new DownloadCompleteReceiver();registerReceiver(receiver, new IntentFilter(DownloadManager.ACTION_DOWNLOAD_COMPLETE));

同时在AndroidManifest.xml 中需要设置

2.消息设置

@SuppressLint("HandlerLeak")Handler handler = new Handler() {@SuppressLint("NewApi")@Overridepublic void handleMessage(Message msg) {// 0x123 更新返回信息if (msg.what == 0x123) {// 生成一个提示DIALOGBuilder builder = new AlertDialog.Builder(MainIndexPage.this);builder.setTitle("版本升级");builder.setMessage("发现最新版,建议立即更新使用\n是否更新？");builder.setPositiveButton("确定",new DialogInterface.OnClickListener() {public void onClick(DialogInterface dialog,int which) {// DownloadManagerTool("http://gdown.baidu.com/data/wisegame/4f361bb58e629011/91xiongmaokanshu_5700.apk");DownloadManagerTool("http://www.xhjk.com.cn/static/zfwg_py.apk");//DownloadManagerTool(DownloadUrl);showProcessBar();}});builder.setNegativeButton("退出",new DialogInterface.OnClickListener() {public void onClick(DialogInterface dialog,int which) {finish();}});AlertDialog dialog = builder.create();dialog.getWindow().setType((WindowManager.LayoutParams.TYPE_SYSTEM_ALERT));dialog.setCancelable(false);dialog.setCanceledOnTouchOutside(false);dialog.show();} else if (msg.what == 0x124) {// 进度条更新mypDialog.setProgress(status);} }};

3.下载Apk的方法

/** * 下载最新APK  */@SuppressLint("NewApi")public void DownloadManagerTool(String downloadAddress) {Log.d("qwe", "qwe");downloadManager = (DownloadManager) getSystemService(DOWNLOAD_SERVICE);DownloadManager.Request down = new DownloadManager.Request(Uri.parse(downloadAddress));// 设置允许使用的网络类型，这里是移动网络和wifi都可以// down.setAllowedNetworkTypes(DownloadManager.Request.NETWORK_MOBILE |// DownloadManager.Request.NETWORK_WIFI);down.setShowRunningNotification(true);// 显示下载界面down.setVisibleInDownloadsUi(true);down.setTitle("goldcard");File destDir = new File("taoyuan");if (!destDir.exists()) {// destDir.mkdirs();}//安装目录，apk名称File prevFile = new File(Environment.getExternalStoragePublicDirectory("XX"),"XXX.apk");if (prevFile.exists()) {Log.d("delete", "prev");prevFile.delete();}down.setDestinationInExternalPublicDir("XX", "XXX.apk");file = new File(Environment.getExternalStoragePublicDirectory("XX"),"XXX.apk");// 将下载请求放入队列downloadId = downloadManager.enqueue(down);Log.e("download id", "" + downloadId);}

4.下载进度条

/** * 下载进度dialog  */private void showProcessBar() {mypDialog = new ProgressDialog(this);mypDialog.setProgressStyle(ProgressDialog.STYLE_HORIZONTAL);mypDialog.setTitle("下载");mypDialog.setMessage("下载中，请勿离开此页面");mypDialog.setProgress(59);mypDialog.setButton(DialogInterface.BUTTON_NEGATIVE, "确定",new DialogInterface.OnClickListener() {public void onClick(DialogInterface dialog, int which) {mypDialog.dismiss();}});mypDialog.setIndeterminate(false);mypDialog.setCancelable(false);mypDialog.show();new Thread(new Runnable() {@SuppressLint("NewApi")@Overridepublic void run() {boolean downloading = true;while (downloading) {DownloadManager.Query q = new DownloadManager.Query();q.setFilterById(downloadId);Cursor cursor = downloadManager.query(q);cursor.moveToFirst();int bytes_downloaded = cursor.getInt(cursor.getColumnIndex(DownloadManager.COLUMN_BYTES_DOWNLOADED_SO_FAR));int bytes_total = cursor.getInt(cursor.getColumnIndex(DownloadManager.COLUMN_TOTAL_SIZE_BYTES));if (cursor.getInt(cursor.getColumnIndex(DownloadManager.COLUMN_STATUS)) == DownloadManager.STATUS_SUCCESSFUL) {downloading = false;}final double dl_progress = ((double) bytes_downloaded / (double) bytes_total) * 100;if (dl_progress > status) {status += 1;handler.sendEmptyMessage(0x124);}cursor.close();}}}).start();}

5.下载完成广播

/** * 接受下载完成广播  */class DownloadCompleteReceiver extends BroadcastReceiver {@SuppressLint("InlinedApi")@Overridepublic void onReceive(Context context, Intent intent) {if (intent.getAction().equals(DownloadManager.ACTION_DOWNLOAD_COMPLETE)) {long downId = intent.getLongExtra(DownloadManager.EXTRA_DOWNLOAD_ID, -1);if (downloadId != downId)return;mypDialog.dismiss();installApk(file);}}}

6.安装Apk的方法

/** * 安装APK  */private void installApk(File file) {if (file.toString().endsWith(".apk")) {Intent intent = new Intent();intent.setAction(Intent.ACTION_VIEW);intent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK);intent.setDataAndType(Uri.fromFile(file),"application/vnd.android.package-archive");startActivity(intent);finish();}}

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