BroadcastReceiver之有序广播

有序广播可以按一定的优先级进行传播

首先进行发送广播

public void click(View v){

        Intent intent = new Intent();
        intent.setAction("com.coderwei.orderbroadcast");
        sendOrderedBroadcast(intent,null,new FinalReceiver(),null,1,"我是一条有序广播",null);
    }

上面new FinalReceiver继承于与BroadcastReceiver,但是不用再清单文件中配置，有特权，可以用于接收最后的结果

 1 public class FirstBroadcast extends BroadcastReceiver {
 2     @Override
 3     public void onReceive(Context context, Intent intent) {
 4         String content = getResultData();
 5         Toast.makeText(context,"First"+content,Toast.LENGTH_SHORT).show();
 6         setResultData("我是一条已经被接收过一次了的有序广播");
 7 
 8     }
 9 }
10 
11 
12 public class SecondBroadcast extends BroadcastReceiver {
13     @Override
14     public void onReceive(Context context, Intent intent) {
15         String content = getResultData();
16         //abortBroadcast();//停止广播
17         Toast.makeText(context,"Second"+content,Toast.LENGTH_SHORT).show();
18         setResultData("我是一条被接收过两次的广播");
19     }
20 }
21 
22 
23 
24 public class ThirdBroadcast extends BroadcastReceiver {
25     @Override
26     public void onReceive(Context context, Intent intent) {
27         String content = getResultData();
28         Toast.makeText(context,"Third"+content,Toast.LENGTH_SHORT).show();
29 
30     }
31 }

然后就是配置Manifest.xml

 1     <receiver android:name=".FirstBroadcast">
 2             <intent-filter
 3                 android:priority="1000">
 4                 <action android:name="com.coderwei.orderbroadcast"/>
 5             </intent-filter>
 6         </receiver>
 7         <receiver android:name=".SecondBroadcast">
 8             <intent-filter
 9                 android:priority="800">
10                 <action android:name="com.coderwei.orderbroadcast"/>
11             </intent-filter>
12         </receiver>
13         <receiver android:name=".ThirdBroadcast">
14             <intent-filter
15                 android:priority="200">
16                 <action android:name="com.coderwei.orderbroadcast"/>
17             </intent-filter>
18         </receiver>

android:priority 代表优先级，-1000 到 1000之间，数值越大，优先级越大。