Troubles installing programmatically an app with INSTALL_PACKAGES permission from /system/app

Question

I\'m trying to install programmatically an app without user interaction and i\'m getting this error

 SecurityException: Neither user 10057 nor current proces         


        

Answer 1

About the error:

SecurityException: Neither user 10057 nor current process has android.permission.INSTALL_PACKAGES

To get INSTALL_PACKAGES permission:

1. Put your app in /system/app
2. Sign the app with the system's key

3. In the manifest.xml file, put this attribute inside the tag manifest:

   <manifest android:sharedUserId="android.uid.system" ...
   

Answer 2

Running these two lines fixes the issue with PackageManager permission error: "Couldn't create temp file for downloaded package file."

adb shell chown system.shell /data/app
adb shell chown system.shell /data/local

Answer 3

Refer to signatureOrSystem permissions on custom ROM

Basically,

1. add the required <uses-permission>
2. push apk to /system/priv-app

Done (well, at least works for me).

You do not need to add android:protectionLevel="signatureOrSystem" or android:sharedUserId="android.uid.system". You could sign with any certification.

Answer 4

I assume that putting it in the /system/app folder is not equivalent to it being loaded in the firmware.