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有序广播拦截

2017-06-06 16:38 387 查看
通过sendOrderedBroadcast()方法发送一条有序广播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="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");
}
}
清单文件代码:
<?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>
运行界面图如下:

                                            
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