下载完成后如何进行APK自动安装

Question

Hi guys was wondering if there was a bit of code I could use that would make an app auto install once the download completes?

My app has a download section with in it. I was using Google Drive to handle the downloads. but I am encountering issues with some devices. So I have decided to move away from google

I am now using media fire as my host. My app uses direct download. But it always downloads using the download manager. What I would like it to do is more like how Google Drive works with direct download. Which is it gives me the option to install as soon as download completes.which i have now solved with these few lines of code

Intent intent = new Intent(Intent.ACTION_VIEW);
intent.setDataAndType(Uri.fromFile(new 
File(Environment.getExternalStorageDirectory() + "/download/" + "app.apk")), 
"application/vnd.android.package-archive");
intent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
startActivity(intent);

is there a way to check download folder before downloading the file. if the file is already there install if not got to web page for download. rather it saying parse error then going to webpage or having multiple downloads of same file.

Thanks in advance as always.

Answer 1

You can get the downloaded Uri after the download complete, so you don't have to specify a file name to save. If you use DownloadManager , below is a simple example.

    final DownloadManager downloadManager = (DownloadManager) getSystemService(DOWNLOAD_SERVICE);
    DownloadManager.Request request = new DownloadManager.Request(Uri.parse("http://remotehost/your.apk"));
    final long id = downloadManager.enqueue(request);
    BroadcastReceiver broadcastReceiver = new BroadcastReceiver() {
        @Override
        public void onReceive(Context context, Intent intent) {
            if (intent.getAction().equals(DownloadManager.ACTION_DOWNLOAD_COMPLETE)) {
                Intent installIntent = new Intent(Intent.ACTION_VIEW);
                if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.HONEYCOMB) {
                    installIntent.setDataAndType(downloadManager.getUriForDownloadedFile(id),
                            "application/vnd.android.package-archive");
                } else {
                    Cursor cursor = downloadManager.query(new DownloadManager.Query().setFilterById(id));
                    try {
                        if (cursor != null && cursor.moveToFirst()) {
                            int status = cursor.getInt(cursor.getColumnIndexOrThrow(DownloadManager.COLUMN_STATUS));
                            String localUri = cursor.getString(cursor.getColumnIndexOrThrow(DownloadManager.COLUMN_LOCAL_URI));
                            if (status == DownloadManager.STATUS_SUCCESSFUL) {
                                installIntent.setDataAndType(Uri.parse(localUri), "application/vnd.android.package-archive");
                            }
                        }
                    } finally {
                        if (cursor != null) {
                            cursor.close();
                        }
                    }
                }
                installIntent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
                context.sendBroadcast(installIntent);
            }
        }
    };
    registerReceiver(broadcastReceiver, new IntentFilter(DownloadManager.ACTION_DOWNLOAD_COMPLETE));