Why cannot I install an .apk after downloading it

Question

I make an Android App, and i make a feature about update.

I download an .apk file and use intent to install it.But it always has an error like "there was a problem when parsing the package"

my code is

I use a receiver to listen the action when download complete ,code is

private BroadcastReceiver mBroadcaseReceiver;
protected void onCreate(@Nullable Bundle savedInstanceState) {
mCheckUpdateBtn.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View v) {
            Log.d("AboutUsActivity","check update");
            downloadApk();
        }
    });
mBroadcaseReceiver = new BroadcastReceiver() {
        @Override
        public void onReceive(Context context, Intent intent) {
            if (intent.getAction().equals(DownloadManager.ACTION_DOWNLOAD_COMPLETE)){
                Log.d("aboutusactivity","下载完成");
                //下载完毕后安装
                installApk();
            }
        }
    };
    registerReceiver(mBroadcaseReceiver,new IntentFilter(DownloadManager.ACTION_DOWNLOAD_COMPLETE));
}


private void downloadApk() {
    Log.d("AboutusActivity","update");
    DownloadManager.Request request = new DownloadManager.Request(Uri.parse("XXXXXX"));
    request.setDescription("updating");
    request.setTitle("title");
    if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.HONEYCOMB) {
        request.allowScanningByMediaScanner();
        request.setNotificationVisibility(DownloadManager.Request.VISIBILITY_VISIBLE_NOTIFY_COMPLETED);
    }
    request.setDestinationInExternalPublicDir(Environment.DIRECTORY_DOWNLOADS, "yuedong.apk");

    // 获得下载服务和队列文件
    DownloadManager manager = (DownloadManager) getSystemService(Context.DOWNLOAD_SERVICE);
    manager.enqueue(request);
}

private void installApk() {
    Intent mIntent = new Intent(Intent.ACTION_VIEW);
    mIntent.setDataAndType(Uri.fromFile(new File(Environment.DIRECTORY_DOWNLOADS,"yuedong.apk")),
            "application/vnd.android.package-archive");
    this.startActivity(mIntent);
}

But it always like So what's wrong with my code?

this could be happening for several reasons. try installing the apk using adb install - this will print out a more specific message about what's going wrong — Gil Moshayof, Dec 13 '15 at 15:07
@GilMoshayof when i open the .apk by notification or open it in the File Manager ,i can install the .apk success — PPTing, Dec 13 '15 at 15:17
@GilMoshayof i have not this permission in my app ,does it necessary? — PPTing, Dec 13 '15 at 15:23

score 0 · Answer 1 · answered Dec 13 '15 at 15:08

0

The app file .apk, that you have downloaded might be corrupted. If you try to install the corrupted apps, you will get the parse error "There was a problem parsing the package". So, try again downloading the app completely and install it.

answered Dec 13 '15 at 15:08

Shishupal Shakya

1,632
2
18
41

1

but when i open it by notification or open the File Manager ,i can install the .apk success, i think it not the problem about the app was corrupted. – PPTing Dec 13 '15 at 15:12
then follow Gil Moshayof's comment . – Shishupal Shakya Dec 13 '15 at 15:14

score 0 · Answer 2 · edited May 23 '17 at 10:28

0

Its may be because that file having private mode protection(access permission).Try this link.

edited May 23 '17 at 10:28

Community

1
1

answered Dec 14 '15 at 05:35

Chandra Sharma

1,339
1
12
26

score 0 · Accepted Answer · answered Dec 15 '15 at 03:02

I know the reason now because my path which download the apk is not match the path that i choose to install the apk. so stupid i am. i change it like

private void downloadApk(String url) {
    Log.d(TAG,"download");
    DownloadManager.Request request = new DownloadManager.Request(Uri.parse(url));
    request.setDescription("updating");
    request.setTitle("My app");

    if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.HONEYCOMB) {
        request.allowScanningByMediaScanner();
        request.setNotificationVisibility(DownloadManager.Request.VISIBILITY_VISIBLE);
    }
    request.setDestinationInExternalPublicDir("/xxx/","update.apk");
    // 获得下载服务和队列文件
    DownloadManager manager = (DownloadManager) getSystemService(Context.DOWNLOAD_SERVICE);
    manager.enqueue(request);
}

private void installApk() {
    File mFile;
    mFile = new File(Environment.getExternalStorageDirectory()+"/xxx/update.apk");
    if (mFile.exists()){
        Intent mIntent = new Intent(Intent.ACTION_VIEW);
        mIntent.setDataAndType(Uri.parse("file://"+mFile.getAbsolutePath()),
                "application/vnd.android.package-archive");
        startActivity(mIntent);
    }else {
        Log.d(TAG,"the file is not exist");
    }

}

Why cannot I install an .apk after downloading it

3 Answers3