多个按钮用同一个监听器监听

public class MainActivity extends AppCompatActivity implements View.OnClickListener {

@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_broadcast);

findViewById(R.id.btn1).setOnClickListener(this);
findViewById(R.id.btn2).setOnClickListener(this);
}

@Override
public void onClick(View v) {
Intent i = new Intent(this,MyReceiver.class);
switch(v.getId()){
case R.id.btn2:
i.putExtra("data", "点击了btn2");
break;
case R.id.btn1:
i.putExtra("data","点击了btn1");
break;
}
sendBroadcast(i);
}
}

MyReceiver.java

public void onReceive(Context context, Intent intent) {
System.out.println("收到消息"+intent.getStringExtra("data"));
}