How to download File and prompt installation of apk

Question

I've been struggling to get my application to update from a direct url, i want to download a apk and then prompt to user to install the apk. How can I do this?

Thanks.

EDIT:

Intent intent = new Intent(Intent.ActionView);
            intent.SetDataAndType(Android.Net.Uri.FromFile(new Java.IO.File(Android.OS.Environment.ExternalStorageDirectory + "/download/" + "WhatsApp Messenger_v2.17.395_apkpure.com.apk")), "application/vnd.android.package-archive");
            intent.AddFlags(ActivityFlags.GrantReadUriPermission);
            intent.SetFlags(ActivityFlags.NoHistory);
            intent.SetFlags(ActivityFlags.ClearWhenTaskReset);


            Forms.Context.StartActivity(Intent.CreateChooser(intent, "Open APK"));

With the code above , opens the app and asks to install with android 4.4, but in my phone android 7.0 doesnt work, gives this alert:"There was a problem parsing the package".

Why u're struggling if Android does everything by itself when opening apk, you don't have to do anything. — Nick Kovalsky, Nov 09 '17 at 11:56
I am using xamarins forms, i cant even start to download the apk. — Phill, Nov 09 '17 at 11:57
There are many ways to down a file, here is one using Android's `DownloadManager` : https://stackoverflow.com/a/47064553/4984832 — SushiHangover, Nov 10 '17 at 01:51

Grace Feng · Answer 1 · 2017-11-10T09:51:51.080

0

Then how can i open the apk after is downloaded?

You could use following code :

Intent intent = new Intent(Intent.ActionView);
intent.SetDataAndType(Android.Net.Uri.FromFile(new Java.IO.File(Android.OS.Environment.ExternalStorageDirectory + "/download/" + "app.apk")), "application/vnd.android.package-archive");
intent.SetFlags(ActivityFlags.NewTask);
StartActivity(intent);

For more information, you could refer to : Android: install .apk programmatically

edited Nov 10 '17 at 09:51

answered Nov 10 '17 at 09:34

Grace Feng

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Gives a exception: Java.Lang.NullPointerException: Exception of type 'Java.Lang.NullPointerException' was thrown – Phill Nov 10 '17 at 10:10
I edited my post with a code that works in android 4.4 , but in android 7.0 doesnt work. – Phill Nov 10 '17 at 10:50
Is not a error, is a alert, is this only: "There was a problem parsing the package"" – Phill Nov 10 '17 at 16:07
@Phill, you could refer to : http://www.technicalnotes.org/fix-parse-error-in-android-there-is-a-problem-parsing-the-package/ – Grace Feng Nov 12 '17 at 13:37

How to download File and prompt installation of apk

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