/
MainActivity.java
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/
MainActivity.java
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package com.noahliu.fcm_demo;
import androidx.annotation.NonNull;
import androidx.appcompat.app.AppCompatActivity;
import android.os.Bundle;
import android.util.Log;
import com.google.android.gms.tasks.OnCanceledListener;
import com.google.android.gms.tasks.OnCompleteListener;
import com.google.android.gms.tasks.Task;
import com.google.firebase.messaging.FirebaseMessaging;
public class MainActivity extends AppCompatActivity {
public static final String TAG = FCMService.TAG;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
FirebaseMessaging.getInstance().subscribeToTopic("news");
FirebaseMessaging.getInstance().getToken().addOnCompleteListener(new OnCompleteListener<String>() {
@Override
public void onComplete(@NonNull Task<String> task) {
if (!task.isSuccessful())return;
String token = task.getResult();
Log.d(TAG, "onComplete: "+token);
}
});
}
}