Android LocalBroadcastManager 使用

原创

灯塔kuaidao 2022-11-04 11:48:41 博主文章分类：android 基础知识 ©著作权

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前言
LocalBroadcastManager 简单使用。

1.注册【添加IntentFilter】
2.反注册
3.发广播

public class Main2Activity extends AppCompatActivity {

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main2);
        //注册
        LocalBroadcastManager.getInstance(this).registerReceiver(new DemoBroadcastReceiver(), new IntentFilter(LOCAL_ACTION));
    }

    public void testNotification(View view) {
        LocalBroadcastManager.getInstance(this).sendBroadcast(new Intent("123"));

        //发送广播
        LocalBroadcastManager.getInstance(this).sendBroadcast(new Intent(LOCAL_ACTION));
    }

    private static final String LOCAL_ACTION = "BROADCAST_ACTION";


    @Override
    protected void onDestroy() {
        super.onDestroy();
        //取消注册
        LocalBroadcastManager.getInstance(this).unregisterReceiver(new DemoBroadcastReceiver());
    }

    final class DemoBroadcastReceiver extends BroadcastReceiver {

        @Override
        public void onReceive(Context context, Intent intent) {
            if (intent != null && LOCAL_ACTION.equals(intent.getAction())) {
                Log.v("zxy", "222222222222222222");
            }
        }
    }
}