实现拦截一条有序广播

通过sendOrderedBroadcast()方法发送一条有序广播

1先编写用户交互界面：

<?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="bzu.edu.cn.guangbo.MainActivity">    <Button        android:layout_width="wrap_content"        android:layout_height="wrap_content"        android:layout_centerHorizontal="true"        android:layout_marginTop="80dp"        android:onClick="send"        android:text="发送有序广播"        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进行事件处理

package bzu.edu.cn.guangbo;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();        //定义广播的事件类型        intent.setAction("Intercept_Stitch");        //发送广播        sendOrderedBroadcast(intent,null);    }}

3创建广播接收者

package bzu.edu.cn.guangbo;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.        //throw new UnsupportedOperationException("Not yet implemented");        Log.i("MyBroadcastReceiverOne","自定义的广播者one，接收到了广播事件");    }}package bzu.edu.cn.guangbo;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.        //throw new UnsupportedOperationException("Not yet implemented");        Log.i("MyBroadcastReceiverTwo","自定义的广播者two，接收到了广播事件");    }}package bzu.edu.cn.guangbo;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.        //throw new UnsupportedOperationException("Not yet implemented");        Log.i("MyBroadcastReceiverThree","自定义的广播者three，接收到了广播事件");    }}

下面是效果图：

清单文件：

<?xml version="1.0" encoding="utf-8"?><manifest xmlns:android="http://schemas.android.com/apk/res/android"    package="bzu.edu.cn.guangbo">    <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"            android:enabled="true"            android:exported="true" >            <intent-filter android:priority="1000">               <action android:name="Intercept_Stitch">               </action>            </intent-filter>            </receiver>        <receiver            android:name=".MyBroadcastReceiverTwo"            android:enabled="true"            android:exported="true" >            <intent-filter android:priority="200">                <action android:name="Intercept_Stitch">                </action>            </intent-filter>        </receiver>        <receiver            android:name=".MyBroadcastReceiverThree"            android:enabled="true"            android:exported="true">            <intent-filter android:priority="600">                <action android:name="Intercept_Stitch">                </action>            </intent-filter>        </receiver>    </application></manifest>