发送有序广播

来源：互联网发布：任我行管家婆软件编辑：程序博客网时间：2024/05/16 09:58

1.布局文件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:layout_width="wrap_content"    android:layout_height="wrap_content"    android:background="@drawable/stitch_one"    tools:context=".MainActivity">    <Button        android:text="发送有序广播"        android:layout_width="wrap_content"        android:layout_height="wrap_content"         android:onClick="send"        android:layout_centerHorizontal="true"        android:layout_marginTop="80dp"        android:paddingLeft="5dp"        android:paddingRight="5dp"        android:background="#FBFBFF"         android:textSize="20sp"         /></RelativeLayout>

2.在布局文件中定义了一个Button按钮，并为按钮注册一个点击事件send,当点击这个按钮时，会发送一条有序广播。

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.创建三个广播接收者

import android.content.BroadcastReceiver;import android.content.Context;import android.content.Intent;import android.util.Log;/** * Created by Administrator on 2017/6/1. */public class MyBroadcastReceiverOne extends BroadcastReceiver {    @Override    public void onReceive(Context context, Intent intent) {        Log.i("MyBroadcastReceiverOne"," One接收到广播");    }}

import android.content.BroadcastReceiver;import android.content.Context;import android.content.Intent;import android.util.Log;/** * Created by Administrator on 2017/6/1. */public class MyBroadcastReceiverTwo extends BroadcastReceiver{    @Override    public void onReceive(Context context, Intent intent) {        Log.i("MyBroadcastReceiverTwo"," Two接收到广播");    }}

import android.content.BroadcastReceiver;import android.content.Context;import android.content.Intent;import android.util.Log;/** * Created by Administrator on 2017/6/1. */public class MyBroadcastReceiverThree extends BroadcastReceiver {    @Override    public void onReceive(Context context, Intent intent) {        Log.i("MyBroadcastReceiverThree"," Three接收到广播");    }}运行效果如图：注意广播接收者需要在清单文件中配置，由于priority的值不同，执行顺序不同，代码如下<receiver       android:name=".MyReceiverOne"       android:enabled="true"       android:exported="true">       <intent-filter android:priority="1000">            <action android:name="Intercept_Stitch" />       </intent-filter></receiver><receiver      android:name=".MyReceiverTwo"      android:enabled="true"      android:exported="true">      <intent-filter android:priority="500">          <action android:name="Intercept_Stitch" />      </intent-filter></receiver><receiver      android:name=".MyReceiverThree"      android:enabled="true"      android:exported="true">     <intent-filter android:priority="300">          <action android:name="Intercept_Stitch" />      </intent-filter></receiver>

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