Question

我有一个Action类，在接收SMS时被调用。在该类的内部，我调用一个活动并执行一些必需的操作。

public class SMSReceiver extends BroadcastReceiver {

// Get the object of SmsManager
final SmsManager sms = SmsManager.getDefault();
public static boolean wasScreenOn = true;
Context context;

public void onReceive(Context context, Intent intent) {
    this.context = context;
 // Intent intent = new Intent();
 // starting activity and performing some other action
}

}


// part of AndroidManifest.xml

<receiver android:name="com.**************.********.SMSReceiver">   
        <intent-filter>
            <action android:name="android.provider.Telephony.SMS_RECEIVED" />
        </intent-filter>
    </receiver>

我面临的问题是当我在Activity类并执行某些操作时，同时如果我收到另一条消息，则调用主动作类（SMSReceiver）。我想要的是等待BraoadCast接收器，直到我完成一项活动并完成该活动。

我是android和stackoverflow的新手。对不起如果我没有遵守规则（至少我遵循1条规则，我在询问这个问题之前通过搜索得到了答案）或者我没有正确地提出问题

Answer 1

在SMSReceiver中有一个静态标志isProcessingMessage = false。每当调用onReceive时，将其设置为true并调用您的Activity。

现在为您自己创建的接收者注册SMSReceiver说“sms_processing_finished”并将其添加到SMSReceiver的 intent-filter 。＆lt; ------别忘了!!

因此，当您的活动处理结束时，生成一个广告接收器，其动作为“sms_processing_finished”。

 private void sendSmsProcessingOver() {
  Intent intent = new Intent("sms_processing_finished");
  LocalBroadcastManager.getInstance(this).sendBroadcast(intent);
}

现在在OnReceive

 public void onReceive(Context context, Intent intent) {
   this.context = context;
   String action = intent.getAction();
   if(action.equals("sms_processing_finished"){
     isProcessingMessage = false;
     /* Now check if any new messages that has arrived is in queue or not.
        if there are messages in      the queue, dequeue them and launch your activity */
   }
   else{
     if(isProcessingMessage){
       /* Queue the Message so that when the processing is over, it will dequeue when 
       it receives "sms_processing_finished" broadcast. */
       return;
     }
     /*do your normal stuff here*/
   }
}

Android，Broadcast Receivers活动类等待它已经运行

1 个答案: