Install / Unistall from shell command in Android

Question

I want to implement a silent installer-from-apk-file and unistaller-package in Android. The topic has largely been discussed on SO and elsewhere but I can\'t apply any for s

Answer 1

Runtime.getRuntime().exec("pm install /mnt/sdcard/HelloAndroid.apk\n");

This works for me, although two more additional details have to be done:

1. Add android:sharedUserId="android.uid.system" in AndroidManifest.xml.

2. Signed the apk with the system key.

   But in this way it seems there is no way to tell whether the installation is succeeded, so I will try @Ginger's method later.