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

 public class FirstBroadcast extends BroadcastReceiver {
     @Override
     public void onReceive(Context context, Intent intent) {
         String content = getResultData();
         Toast.makeText(context,"First"+content,Toast.LENGTH_SHORT).show();
         setResultData("我是一条已经被接收过一次了的有序广播");

     }
 }

 public class SecondBroadcast extends BroadcastReceiver {
     @Override
     public void onReceive(Context context, Intent intent) {
         String content = getResultData();
         //abortBroadcast();//停止广播
         Toast.makeText(context,"Second"+content,Toast.LENGTH_SHORT).show();
         setResultData("我是一条被接收过两次的广播");
     }
 }

 public class ThirdBroadcast extends BroadcastReceiver {
     @Override
     public void onReceive(Context context, Intent intent) {
         String content = getResultData();
         Toast.makeText(context,"Third"+content,Toast.LENGTH_SHORT).show();

     }
 }

然后就是配置Manifest.xml

     <receiver android:name=".FirstBroadcast">
             <intent-filter
                 android:priority="1000">
                 <action android:name="com.coderwei.orderbroadcast"/>
             </intent-filter>
         </receiver>
         <receiver android:name=".SecondBroadcast">
             <intent-filter
                 android:priority="800">
                 <action android:name="com.coderwei.orderbroadcast"/>
             </intent-filter>
         </receiver>
         <receiver android:name=".ThirdBroadcast">
             <intent-filter
                 android:priority="200">
                 <action android:name="com.coderwei.orderbroadcast"/>
             </intent-filter>
         </receiver>

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