发送有序广播

1.编写用户交互界面

<?xml version="1.0" encoding="utf-8"?><RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"    xmlns:tools="http://schemas.android.com/tools"    android:id="@+id/activity_main"    android:layout_width="match_parent"    android:layout_height="match_parent"    android:background="@drawable/stitch_one"    tools:context="com.example.bz0209.myapplication.MainActivity">    <Button        android:layout_width="wrap_content"        android:layout_height="wrap_content"        android:onClick="send"        android:text="发送有序广播"        android:layout_marginTop="80dp"        android:layout_centerHorizontal="true"        android:paddingLeft="5dp"        android:paddingRight="5dp"        android:background="#FBFBFF"        android:textSize="20sp"        /></RelativeLayout>

2.点击发送有序广播按钮时事件处理

package com.example.bz0209.myapplication;import android.content.Intent;import android.support.v7.app.AppCompatActivity;import android.os.Bundle;import android.view.View;public class MainActivity extends AppCompatActivity {    @Override    protected void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        setContentView(R.layout.activity_main);    }    public void send(View view){        Intent intent = new Intent();        intent.setAction("Intercept_Stitch");        sendOrderedBroadcast(intent,null);    }}

3.创建广播接收者MyBroadcastReceiverOne，MyBroadcastReceiverTwo，MyBroadcastReceiverThree

package com.example.bz0209.myapplication;import android.content.BroadcastReceiver;import android.content.Context;import android.content.Intent;import android.util.Log;public class MyBroadcastReceiverOne extends BroadcastReceiver {    public MyBroadcastReceiverOne() {    }    @Override    public void onReceive(Context context, Intent intent) {        // TODO: This method is called when the BroadcastReceiver is receiving        // an Intent broadcast.        Log.i("MyBroadcastReceiverOne","自定义的广播接收者One,接收到了广播事件");    }}

package com.example.bz0209.myapplication;import android.content.BroadcastReceiver;import android.content.Context;import android.content.Intent;import android.util.Log;public class MyBroadcastReceiverTwo extends BroadcastReceiver {    public MyBroadcastReceiverTwo() {    }    @Override    public void onReceive(Context context, Intent intent) {        // TODO: This method is called when the BroadcastReceiver is receiving        // an Intent broadcast.        Log.i("MyBroadcastReceiverTwo","自定义的广播接收者Two,接收到了广播事件");    }}

package com.example.bz0209.myapplication;import android.content.BroadcastReceiver;import android.content.Context;import android.content.Intent;import android.util.Log;public class MyBroadcastReceiverThree extends BroadcastReceiver {    public MyBroadcastReceiverThree() {    }    @Override    public void onReceive(Context context, Intent intent) {        // TODO: This method is called when the BroadcastReceiver is receiving        // an Intent broadcast.        Log.i("MyBroadcastReceiver 3","自定义的广播接收者Three,接收到了广播事件");    }}

4.在清单文件中注册广播接收者

<receiver    android:name=".MyBroadcastReceiverOne">    <intent-filter android:priority="1000">        <action android:name="Intercept_Stitch"/>    </intent-filter></receiver><receiver    android:name=".MyBroadcastReceiverTwo">    <intent-filter android:priority="200">        <action android:name="Intercept_Stitch"/>    </intent-filter></receiver><receiver    android:name=".MyBroadcastReceiverThree">    <intent-filter android:priority="600">        <action android:name="Intercept_Stitch"/>    </intent-filter></receiver>

5.运行结果如图：

另一个就是将MyBroadcastReceiverTwo的优先级改为1000，同时拦截有序广播 
package com.example.bz0209.myapplication;import android.content.BroadcastReceiver;import android.content.Context;import android.content.Intent;import android.util.Log;public class MyBroadcastReceiverTwo extends BroadcastReceiver {    public MyBroadcastReceiverTwo() {    }    @Override    public void onReceive(Context context, Intent intent) {        // TODO: This method is called when the BroadcastReceiver is receiving        // an Intent broadcast.        Log.i("MyBroadcastReceiverTwo","自定义的广播接收者Two,接收到了广播事件");        abortBroadcast();        Log.i("MyBroadcastReceiverTwo","我是广播接收者Two，广播被我终结了");    }}
结果如图所示，没有传播到MyBroadcastReceiverThree，广播就被终结了，所以MyBroadcastReceiverThree没有收到广播