小编Imr*_*Lab的帖子

在我的一个用例中,应用程序在开始时联系服务器并下载同一应用程序的更新.

下载我正在使用Android的DownloadManager类.然后使用下面的代码,它尝试创建应用程序安装程序意图,onReceive()即成功下载APK后.

@Override
public void onReceive(Context context, Intent intent) {

    //check if the broadcast message is for our Enqueued download
    long referenceId = intent.getLongExtra(DownloadManager.EXTRA_DOWNLOAD_ID, -1);
    if (downloadReference == referenceId) {
        try {
            Log.v("", "Downloading of the new app version complete");

            String filepath = Environment.getExternalStorageDirectory() + "/" +
                    Environment.DIRECTORY_DOWNLOADS + "/" + mLatestVersionFileName;

            //start the installation of the latest version
            Uri uri = downloadManager.getUriForDownloadedFile(downloadReference);

            //downloadManager.getUriForDownloadedFile(downloadReference)
            Uri fileLoc = Uri.fromFile(new File(filepath));

            Intent promptInstall = new Intent(Intent.ACTION_VIEW);
            promptInstall.setDataAndType(uri, "application/vnd.android.package-archive");
            promptInstall.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
            startActivity(promptInstall); …