VancedMicroG/play-services-core/src/main/java/org/microg/gms/gcm/UnregisterReceiver.java

package org.microg.gms.gcm;

import android.content.BroadcastReceiver;
import android.content.Context;
import android.content.Intent;
import android.util.Log;

import java.util.List;

import static android.content.Intent.ACTION_PACKAGE_REMOVED;
import static android.content.Intent.EXTRA_DATA_REMOVED;

public class UnregisterReceiver extends BroadcastReceiver {
    private static final String TAG = "GmsGcmUnregisterRcvr";

    @Override
    public void onReceive(final Context context, Intent intent) {
        Log.d(TAG, "Package changed: " + intent);
        if (ACTION_PACKAGE_REMOVED.contains(intent.getAction()) && intent.getBooleanExtra(EXTRA_DATA_REMOVED, false)) {
            final GcmDatabase database = new GcmDatabase(context);
            final String packageName = intent.getData().getSchemeSpecificPart();
            Log.d(TAG, "Package removed: " + packageName);
            final GcmDatabase.App app = database.getApp(packageName);
            if (app != null) {
                new Thread(new Runnable() {
                    @Override
                    public void run() {
                        List<GcmDatabase.Registration> registrations = database.getRegistrationsByApp(packageName);
                        boolean deletedAll = true;
                        for (GcmDatabase.Registration registration : registrations) {
                            deletedAll &= PushRegisterManager.unregister(context, registration.packageName, registration.signature, null, null).deleted != null;
                        }
                        if (deletedAll) {
                            database.removeApp(packageName);
                        }
                        database.close();
                    }
                }).start();
            } else {
                database.close();
            }
        }
    }
}