CallRedirectionService Implementation not working

Question

Android Q has introduced CallRedirectionService API - seems like one of the way 3rd party apps can use it is to cancel calls and reroute them over VoIP - essentiall

Answer 1

The problem is that at the moment documentation is not full and sample in documentation is not correct. To fix this, in your AndroidManifest it is needed to change

android:permission="android.permission.BIND_REDIRECTION_SERVICE"

to

android:permission="android.permission.BIND_CALL_REDIRECTION_SERVICE"

This permission is incorrectly written inside the google documentation for https://developer.android.com/reference/android/telecom/CallRedirectionService.html currently.

Also, it is required to ask user to allow your application play this role. In google documentation this part missing at the moment :

 RoleManager roleManager = null;
    if (android.os.Build.VERSION.SDK_INT >= android.os.Build.VERSION_CODES.Q) {
        roleManager = (RoleManager) getSystemService(Context.ROLE_SERVICE);

        Intent intent = roleManager.createRequestRoleIntent(RoleManager.ROLE_CALL_REDIRECTION);
        startActivityForResult(intent, 1);}