如何在我的活动中调用广播接收器，以便当我点击按钮时，它将被激活？

// 广播接收器类
public class MyBroadcastReceiver extends BroadcastReceiver {
    @Override
    public void onReceive(Context context, Intent intent) {
        // 在接收到广播后执行的操作逻辑
    }
}

// 活动类
public class MainActivity extends AppCompatActivity {
    private MyBroadcastReceiver receiver;

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

        // 创建广播接收器对象
        receiver = new MyBroadcastReceiver();

        // 注册广播接收器
        IntentFilter filter = new IntentFilter();
        filter.addAction("com.example.MY_ACTION"); // 自定义广播类型
        registerReceiver(receiver, filter);

        // 按钮点击事件
        Button button = findViewById(R.id.button);
        button.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                // 发送广播
                Intent intent = new Intent("com.example.MY_ACTION");
                sendBroadcast(intent);
            }
        });
    }

    @Override
    protected void onDestroy() {
        super.onDestroy();
        // 取消注册广播接收器
        unregisterReceiver(receiver);
    }
}