发送有序广播

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需要创建的文件

程序启动后，单击“发送有序广播”按钮，发出一条广播事件，此时观察LogCat窗口下的提示信息，输出什么？(见上图00)若将广播接收者MyBroadcastReceiverTwo优先级同样设置为1000，并将MyBroadcastReceiverTwo注册在MyBroadcastReceiverOne前面，再来运行程序，观察结果（见上图01）修改MyBroadcastReceiverTwo如下，观察结果（见上图02）public class MyBroadcastReceiverTwo extends BroadcastReceiver {    public MyBroadcastReceiverTwo() {    }    @Override    public void onReceive(Context context, Intent intent) {        Log.i("MyBroadcastReceiverTwo", "two自定义的广播接受者,接受到了求救广播事件");        abortBroadcast（）;  //拦截有序广播         Log.i("MyBroadcastReceiverTwo", "我是two,广播被我终结了");     }}代码如下：activity_main.xml<?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="cn.edu.bzu.orderedbroadcast.MainActivity">    <Button        android:layout_width="wrap_content"        android:layout_height="wrap_content"        android:layout_centerHorizontal="true"        android:layout_marginTop="50dp"        android:text="发送有序广播"        android:textSize="16sp"        android:onClick="send"        /></RelativeLayout>AndroidManifest.xml<?xml version="1.0" encoding="utf-8"?><manifest xmlns:android="http://schemas.android.com/apk/res/android"    package="cn.edu.bzu.orderedbroadcast">    <application        android:allowBackup="true"        android:icon="@mipmap/ic_launcher"        android:label="@string/app_name"        android:supportsRtl="true"        android:theme="@style/AppTheme">        <activity android:name=".MainActivity">            <intent-filter>                <action android:name="android.intent.action.MAIN" />                <category android:name="android.intent.category.LAUNCHER" />            </intent-filter>        </activity>        <receiver            android:name=".MyBroadcastReceiverOne">            <intent-filter android:priority="1000">   //优先级            <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>    </application></manifest>MainActivitypackage cn.edu.bzu.orderedbroadcast;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);    }}MyBroadcastReceiverOnepackage cn.edu.bzu.orderedbroadcast;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) {        Log.i("MyBroadcastReceiverOne", "one自定义的广播接受者,接受到了求救广播事件");    }}MyBroadcastReceiverTwopackage cn.edu.bzu.orderedbroadcast;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) {        Log.i("MyBroadcastReceiverTwo", "two自定义的广播接受者,接受到了求救广播事件");    }}MyBroadcastReceiverThreepackage cn.edu.bzu.orderedbroadcast;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) {        Log.i("MyBroadcastReceiverThree", "three自定义的广播接受者,接受到了求救广播事件");    }}