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）
1 package com.qf.broadcastreceiver04;
2
3 public class Config {
4
5 //声明广播的Action
6 public static final String ACTION_PRINT="com.qf.broadcast.print";
7 }
4_Config.java
1 package com.qf.broadcastreceiver04;
2
3 import android.app.Activity;
4 import android.content.Intent;
5 import android.os.Bundle;
6 import android.view.View;
7
8 public class MainActivity extends Activity {
9
10 @Override
11 protected void onCreate(Bundle savedInstanceState) {
12 super.onCreate(savedInstanceState);
13 setContentView(R.layout.activity_main);
14 }
15
16 public void send1(View v){
17 //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)
18 //sendOrderedBroadcast(new Intent(Config.ACTION_PRINT),"com.qf.permission.print");
19
20 //带有权限发送广播
21 sendBroadcast(new Intent(Config.ACTION_PRINT), "com.qf.permission.print");
22
23 //sendBroadcast(new Intent(Config.ACTION_PRINT));
24 }
25
26 }
4_MainActivity.java
1 package com.qf.broadcastreceiver04;
2
3 import java.util.Date;
4
5 import android.content.BroadcastReceiver;
6 import android.content.Context;
7 import android.content.Intent;
8 import android.util.Log;
9
10 public class MyReceiver01 extends BroadcastReceiver {
11
12 @Override
13 public void onReceive(Context context, Intent intent) {
14 // TODO Auto-generated method stub
15 Log.i("debug", "--MyReceiver01---onReceive--"+new Date());
16 }
17
18 }
4_MyReceiver01.java
4的另外两个和01一样
4的配置文件
1 <?xml version="1.0" encoding="utf-8"?> 2 <manifest xmlns:android="http://schemas.android.com/apk/res/android" 3 package="com.qf.broadcastreceiver04" 4 android:versionCode="1" 5 android:versionName="1.0" > 6 7 <uses-sdk 8 android:minSdkVersion="8" 9 android:targetSdkVersion="17" /> 10 11 <!-- 定义权限 --> 12 <permission android:name="com.qf.permission.print" /> 13 14 <!-- 使用权限 --> 15 <uses-permission android:name="com.qf.permission.print" /> 16 17 <application 18 android:allowBackup="true" 19 android:icon="@drawable/ic_launcher" 20 android:label="@string/app_name" 21 android:theme="@style/AppTheme" > 22 <activity 23 android:name="com.qf.broadcastreceiver04.MainActivity" 24 android:label="@string/app_name" > 25 <intent-filter> 26 <action android:name="android.intent.action.MAIN" /> 27 28 <category android:name="android.intent.category.LAUNCHER" /> 29 </intent-filter> 30 </activity> 31 32 <!-- 注册广播接收器 --> 33 <receiver 34 android:name="com.qf.broadcastreceiver04.MyReceiver01" 35 android:permission="com.qf.permission.print" > 36 <intent-filter> 37 <action android:name="com.qf.broadcast.print" /> 38 </intent-filter> 39 </receiver> 40 <receiver 41 android:name="com.qf.broadcastreceiver04.MyReceiver02" 42 android:permission="com.qf.permission.print" > 43 <intent-filter android:priority="80" > 44 <action android:name="com.qf.broadcast.print" /> 45 </intent-filter> 46 </receiver> 47 48 <!-- 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） 49 android:exported="false" 不接收外部应用发送的广播 --> 50 <receiver 51 android:name="com.qf.broadcastreceiver04.MyReceiver03" 52 android:permission="com.qf.permission.print" 53 android:exported="false" > 54 55 <!-- 通过priority属性设置接收广播的优先级(范围： -1000~1000) --> 56 <intent-filter android:priority="100" > 57 <action android:name="com.qf.broadcast.print" /> 58 </intent-filter> 59 </receiver> 60 </application> 61 62 </manifest>
AndroidManifest.xml
1 package com.qf.broadcastreceiver05;
2
3 import android.app.Activity;
4 import android.content.Intent;
5 import android.os.Bundle;
6 import android.view.View;
7
8 /**
9 * 接收04应用中发送的广播
10 * @author apple
11 *
12 */
13 public class MainActivity extends Activity {
14
15 @Override
16 protected void onCreate(Bundle savedInstanceState) {
17 super.onCreate(savedInstanceState);
18 setContentView(R.layout.activity_main);
19 }
20
21
22 public void sendBroadcast(View v){
23 Intent intent=new Intent("com.qf.broadcast.print");
24 intent.setPackage("com.qf.broadcastreceiver04"); //设置可以接收此广播的应用的包名
25
26 sendBroadcast(intent);
27 }
28
29 }
5_MainActivity.java
5的recerver也是一样的
5的配置文件
1 <?xml version="1.0" encoding="utf-8"?> 2 <manifest xmlns:android="http://schemas.android.com/apk/res/android" 3 package="com.qf.broadcastreceiver05" 4 android:versionCode="1" 5 android:versionName="1.0" > 6 7 <uses-sdk 8 android:minSdkVersion="8" 9 android:targetSdkVersion="17" /> 10 11 <uses-permission android:name="com.qf.permission.print"/> 12 13 <application 14 android:allowBackup="true" 15 android:icon="@drawable/ic_launcher" 16 android:label="@string/app_name" 17 android:theme="@style/AppTheme" > 18 <activity 19 android:name="com.qf.broadcastreceiver05.MainActivity" 20 android:label="@string/app_name" > 21 <intent-filter> 22 <action android:name="android.intent.action.MAIN" /> 23 24 <category android:name="android.intent.category.LAUNCHER" /> 25 </intent-filter> 26 </activity> 27 28 <receiver android:name="com.qf.broadcastreceiver05.MyReceiver01"> 29 <intent-filter> 30 <action android:name="com.qf.broadcast.print"/> 31 </intent-filter> 32 </receiver> 33 34 </application> 35 36 </manifest>
5_AndroidManifest.xml
时间： 2024-10-13 07:08:11