I am trying to create an app to block the installation of a certain app based on the package name. I tried the BroadcastReceiver method but the app seems to crash. and thank you for reviewing this and for the help.
here is my BroadcastReceiver class:
import android.content.BroadcastReceiver;
import android.content.Context;
import android.content.Intent;
import android.util.Log;
import android.widget.Toast;
public class MyReceiver extends BroadcastReceiver {
Context context;
String log = MyReceiver.class.getName();
@Override
public void onReceive(Context context, Intent intent) {
this.context = context;
if(intent.getAction().equals("android.intent.action.PACKAGE_REMOVED")){
Toast.makeText(context,"Package removed", Toast.LENGTH_LONG).show();
Log.d(log,"Package removed");
}
if(intent.getAction().equals("android.intent.action.PACKAGE_ADDED")){
Toast.makeText(context, "Package installed", Toast.LENGTH_SHORT).show();
Log.d(log,"Package installed");
}
}
}
manifest:
<receiver
android:name="MyReceiver"
android:enabled="true"
android:exported="true">
<intent-filter android:priority="100">
<action android:name="android.intent.action.PACKAGE_ADDED"/>
<action android:name="android.intent.action.PACKAGE_REMOVED"/>
<data android:scheme="package"/>
</intent-filter>
</receiver>
crash log:
10-12 22:18:22.836 15429-15429/com.example.mohammed.broadcastreceiver E/AndroidRuntime: FATAL EXCEPTION: main
Process: com.example.mohammed.broadcastreceiver, PID: 15429
java.lang.RuntimeException: Unable to instantiate receiver com.example.mohammed.broadcastreceiver.MyReceiver: java.lang.ClassNotFoundException: Didn't find class "com.example.mohammed.broadcastreceiver.MyReceiver" on path: DexPathList[[zip file "/data/app/com.example.mohammed.broadcastreceiver-1/base.apk", zip file "/data/app/com.example.mohammed.broadcastreceiver-1/split_lib_dependencies_apk.apk", zip file "/data/app/com.example.mohammed.broadcastreceiver-1/split_lib_slice_0_apk.apk", zip file "/data/app/com.example.mohammed.broadcastreceiver-1/split_lib_slice_1_apk.apk", zip file "/data/app/com.example.mohammed.broadcastreceiver-1/split_lib_slice_2_apk.apk", zip file "/data/app/com.example.mohammed.broadcastreceiver-1/split_lib_slice_3_apk.apk", zip file "/data/app/com.example.mohammed.broadcastreceiver-1/split_lib_slice_4_apk.apk", zip file "/data/app/com.example.mohammed.broadcastreceiver-1/split_lib_slice_5_apk.apk", zip file "/data/app/com.example.mohammed.broadcastreceiver-1/split_lib_slice_6_apk.apk", zip file "/data/app/com.example.mohammed.broadcastreceiver-1/split_lib_slice_7_apk.apk", zip file "/data/app/com.example.mohammed.broadcastreceiver-1/split_lib_slice_8_apk.apk", zip file "/data/app/com.example.mohammed.broadcastreceiver-1/split_lib_slice_9_apk.apk"],nativeLibraryDirectories=[/data/app/com.example.mohammed.broadcastreceiver-1/lib/arm64, /system/lib64, /vendor/lib64]]
at android.app.ActivityThread.handleReceiver(ActivityThread.java:3287)
at android.app.ActivityThread.-wrap20(ActivityThread.java)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1719)
at android.os.Handler.dispatchMessage(Handler.java:102)
at android.os.Looper.loop(Looper.java:154)
at android.app.ActivityThread.main(ActivityThread.java:6692)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1468)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1358)
Caused by: java.lang.ClassNotFoundException: Didn't find class "com.example.mohammed.broadcastreceiver.MyReceiver" on path: DexPathList[[zip file "/data/app/com.example.mohammed.broadcastreceiver-1/base.apk", zip file "/data/app/com.example.mohammed.broadcastreceiver-1/split_lib_dependencies_apk.apk", zip file "/data/app/com.example.mohammed.broadcastreceiver-1/split_lib_slice_0_apk.apk", zip file "/data/app/com.example.mohammed.broadcastreceiver-1/split_lib_slice_1_apk.apk", zip file "/data/app/com.example.mohammed.broadcastreceiver-1/split_lib_slice_2_apk.apk", zip file "/data/app/com.example.mohammed.broadcastreceiver-1/split_lib_slice_3_apk.apk", zip file "/data/app/com.example.mohammed.broadcastreceiver-1/split_lib_slice_4_apk.apk", zip file "/data/app/com.example.mohammed.broadcastreceiver-1/split_lib_slice_5_apk.apk", zip file "/data/app/com.example.mohammed.broadcastreceiver-1/split_lib_slice_6_apk.apk", zip file "/data/app/com.example.mohammed.broadcastreceiver-1/split_lib_slice_7_apk.apk", zip file "/data/app/com.example.mohammed.broadcastreceiver-1/split_lib_slice_8_apk.apk", zip file "/data/app/com.example.mohammed.broadcastreceiver-1/split_lib_slice_9_apk.apk"],nativeLibraryDirectories=[/data/app/com.example.mohammed.broadcastreceiver-1/lib/arm64, /system/lib64, /vendor/lib64]]
at dalvik.system.BaseDexClassLoader.findClass(BaseDexClassLoader.java:56)
at java.lang.ClassLoader.loadClass(ClassLoader.java:380)
at java.lang.ClassLoader.loadClass(ClassLoader.java:312)
at android.app.ActivityThread.handleReceiver(ActivityThread.java:3282)
at android.app.ActivityThread.-wrap20(ActivityThread.java)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1719)
at android.os.Handler.dispatchMessage(Handler.java:102)
at android.os.Looper.loop(Looper.java:154)
at android.app.ActivityThread.main(ActivityThread.java:6692)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1468)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1358)
You've registered your Receiver incorrectly.
The crash log says it can't find MyReceiver in the root of your project (which is where you've said it exists in your Manifest), but it looks like it isn't.
Make sure the name attribute points to the actual location.