自定义广播的使用

import static android.content.ContentValues.TAG;

//在主线程里面处理消息并更新UI界面
public class MyBroadcastReceiver extends BroadcastReceiver {
    String name1;
    @Override
    public void onReceive( Context context, Intent intent) {
        String a =intent.getStringExtra ( "name" );
        Toast.makeText(context,a,Toast.LENGTH_SHORT).show();
        Log.d(TAG,"0000000");
        name1=a;
    }

}

定义BoardcastReceiver 并且仿写 OnRreceive，把想执行的方法写进去。

 MyBroadcastReceiver broadcastReceiver =new MyBroadcastReceiver ();
    IntentFilter intentFilter = new IntentFilter ();
    intentFilter.addAction ( "mybroadcast" );
    registerReceiver ( broadcastReceiver, intentFilter );

在主页要声明Broadcast Receiver，说明需要执行那些action

  Intent intent = new Intent();
                    intent.setAction("mybroadcast");
                    intent.putExtra ( "name" ,f);
                    sendBroadcast(intent);

使用intent 把broadcast 发出去
可以用extra 带一些信息走

 <receiver android:name=".MyBroadcastReceiver">
            <intent-filter>

                <action android:name="mybroadcast" />
            </intent-filter>
        </receiver>

在 manifest进行声明要进行广播的名字与自定义广播的类名。