'Update system app in android
I have developed an android app and put this as prebuilt APK in AOSP. So the app will be installed in /system/app as a system app.
The app has update function itself by downloading and installing the newer version APK.
But it does not work because system app cannot be updated. Is there any way to update self-made system app?
Solution 1:[1]
System app can be updated, in two ways:
Updated by the ota updating, this will change the app directly, and the app still exist on /system.
updated by using package install api, this need the new version apk have the same signature with the one on /system, and the new version will be installed on /data. That means, if the device is reset, the new version will lose.
Ota update is a normal way for system app updating.
Solution 2:[2]
Yes, you can install an updated version of your original system app into the /data partition, provided that:
1. Both app versions are signed with the same key;
2. The updated app’s versionCode is greater than or equal to the original app’s.
One way to do this update is to use the following adb command: adb install -r <your updated apk file>. Then you can test your updated version without having to rebuild your AOSP code.
Note that your updated version in the /data partition will be removed via a factory data reset. In this case your original system app will take effect again.
Sources
This article follows the attribution requirements of Stack Overflow and is licensed under CC BY-SA 3.0.
Source: Stack Overflow
| Solution | Source |
|---|---|
| Solution 1 | |
| Solution 2 | jonathanzh |