两个应用之间传递广播的规则 Broadcast

  sendBroadcast(new Intent(Config.ACTION_PRINT),”com.qf.permission.print”);先判断应用有没有对应的权限 再去判断有没有对应的action两者都对应了才能进行接收      一个应用声明了权限 另一个应用使用了该权限并且action（频道相同）则可以接收广播

应用4发广播应用4里边对应频道的接受者都可以接受   应用5使用了应用4声明的权限并且接受者的action（频道）一直因此也可以接受4的广播   5发广播4也能接受 除非自己设置不接受其他应用的广播（见4的配置文件）  5也可以指定接受者的包名固定发给某个应用（见5的MainActivity.java）

配置文件里可以设置接受者的优先级越高先接受（见4配置文件）

package com.qf.broadcastreceiver04;

public class Config {

    //声明广播的Action
    public static final String ACTION_PRINT="com.qf.broadcast.print";
}

package com.qf.broadcastreceiver04;

import android.app.Activity;
import android.content.Intent;
import android.os.Bundle;
import android.view.View;

public class MainActivity extends Activity {

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
    }
    
    public void send1(View v){
        //发送打印广播: 有序广播，且带接收此广播的权限(需要在manifest文件中声明和使用)
        //sendOrderedBroadcast(new Intent(Config.ACTION_PRINT),"com.qf.permission.print");
    
        //带有权限发送广播
        sendBroadcast(new Intent(Config.ACTION_PRINT), "com.qf.permission.print");
        
        //sendBroadcast(new Intent(Config.ACTION_PRINT));
    }

}

package com.qf.broadcastreceiver04;

import java.util.Date;

import android.content.BroadcastReceiver;
import android.content.Context;
import android.content.Intent;
import android.util.Log;

public class MyReceiver01 extends BroadcastReceiver {

    @Override
    public void onReceive(Context context, Intent intent) {
        // TODO Auto-generated method stub
        Log.i("debug", "--MyReceiver01---onReceive--"+new Date());
    }

}

4的另外两个和01一样

4的配置文件

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    package="com.qf.broadcastreceiver04"
    android:versionCode="1"
    android:versionName="1.0" >

    <uses-sdk
        android:minSdkVersion="8"
        android:targetSdkVersion="17" />

    <!-- 定义权限 -->
    <permission android:name="com.qf.permission.print" />

    <!-- 使用权限 -->
    <uses-permission android:name="com.qf.permission.print" />

    <application
        android:allowBackup="true"
        android:icon="@drawable/ic_launcher"
        android:label="@string/app_name"
        android:theme="@style/AppTheme" >
        <activity
            android:name="com.qf.broadcastreceiver04.MainActivity"
            android:label="@string/app_name" >
            <intent-filter>
                <action android:name="android.intent.action.MAIN" />

                <category android:name="android.intent.category.LAUNCHER" />
            </intent-filter>
        </activity>

        <!-- 注册广播接收器 -->
        <receiver
            android:name="com.qf.broadcastreceiver04.MyReceiver01"
            android:permission="com.qf.permission.print" >
            <intent-filter>
                <action android:name="com.qf.broadcast.print" />
            </intent-filter>
        </receiver>
        <receiver
            android:name="com.qf.broadcastreceiver04.MyReceiver02"
            android:permission="com.qf.permission.print" >
            <intent-filter android:priority="80" >
                <action android:name="com.qf.broadcast.print" />
            </intent-filter>
        </receiver>
        
        <!-- android:permission 设置接收的广播是带有权限的（发送广播端必须使用此权限）
             android:exported="false" 不接收外部应用发送的广播 -->
        <receiver
            android:name="com.qf.broadcastreceiver04.MyReceiver03"
            android:permission="com.qf.permission.print"
            android:exported="false" >

            <!-- 通过priority属性设置接收广播的优先级(范围： -1000~1000) -->
            <intent-filter android:priority="100" >
                <action android:name="com.qf.broadcast.print" />
            </intent-filter>
        </receiver>
    </application>

</manifest>

package com.qf.broadcastreceiver05;

import android.app.Activity;
import android.content.Intent;
import android.os.Bundle;
import android.view.View;

/**
 * 接收04应用中发送的广播
 * @author apple
 *
 */
public class MainActivity extends Activity {

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
    }

    
    public void sendBroadcast(View v){
        Intent intent=new Intent("com.qf.broadcast.print");
        intent.setPackage("com.qf.broadcastreceiver04"); //设置可以接收此广播的应用的包名
        
        sendBroadcast(intent);
    }

}

5的recerver也是一样的

5的配置文件

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    package="com.qf.broadcastreceiver05"
    android:versionCode="1"
    android:versionName="1.0" >

    <uses-sdk
        android:minSdkVersion="8"
        android:targetSdkVersion="17" />

    <uses-permission android:name="com.qf.permission.print"/>
    
    <application
        android:allowBackup="true"
        android:icon="@drawable/ic_launcher"
        android:label="@string/app_name"
        android:theme="@style/AppTheme" >
        <activity
            android:name="com.qf.broadcastreceiver05.MainActivity"
            android:label="@string/app_name" >
            <intent-filter>                                   
                <action android:name="android.intent.action.MAIN" />

                <category android:name="android.intent.category.LAUNCHER" />
            </intent-filter>
        </activity>
        
       <receiver android:name="com.qf.broadcastreceiver05.MyReceiver01">
           <intent-filter>
               <action android:name="com.qf.broadcast.print"/>
           </intent-filter>
       </receiver>
       
    </application>

</manifest>