android permission - CHANGE_COMPONENT_ENABLED_STATE

问题

i need to use android.permission.CHANGE_COMPONENT_ENABLED_STATE permission in my code because i need to update the component of another apk of my project, but it don't seems really work for me

here is my code :

<permission
    android:name="android.permission.CHANGE_COMPONENT_ENABLED_STATE"
    android:protectionLevel="signatureOrSystem"/>

final int permission = ctx.checkCallingPermission(android.Manifest.permission.CHANGE_COMPONENT_ENABLED_STATE);

final boolean allowedByPermission = (permission == PackageManager.PERMISSION_GRANTED);
L.d(TAG, "allowedByPermission :" + allowedByPermission + " permission:" + permission);
if(allowedByPermission) {}

allowedByPermission always log a false.. not sure if i could miss something?

回答1:

First, your app would need <uses-permission>, not <permission>.

Second, your app cannot hold that permission, unless it is installed on the system partition (e.g., by a rooted device user) or is signed by the same signing key that signed the system firmware.

来源：https://stackoverflow.com/questions/19303633/android-permission-change-component-enabled-state