收到时未填写意图额外信息

Question

我在发送待处理意向附加信息时遇到问题。我在我的StateCh服务中添加了额外的字符串并发送到我的MainActivity。 MainActivity按预期启动，但我放在那里的额外字符串总是丢失。

MainActivity.java：

public class MainActivity extends Activity { 

public void onResume() { 
    super.onResume(); 

String recMessage = this.getIntent().getStringExtra("message"); 

if(recMessage.equals("")) { 
    Log.v("recMessage", "none"); 
    } else { 
    Log.v("recMessage", "something"); 
    } 
    // .. 
} 
} 

StateCh.java：

public class StateCh extends Service { 

//... 

    private void notificationU(String title, String text) { 

    //The intent to launch when the user clicks the expanded notification 
    Intent intent = new Intent(this, MainActivity.class); 
    intent.setFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP | Intent.FLAG_ACTIVITY_SINGLE_TOP); 
    intent.putExtra("message", "ssss"); 
    intent.setAction("actionstring" + System.currentTimeMillis()); 

    PendingIntent pendIntent = PendingIntent.getActivity(this, 0, intent, PendingIntent.FLAG_UPDATE_CURRENT); 

    Notification noti2 = new NotificationCompat.Builder(this) 
    .setContentTitle(title) 
    .setContentText(text) 
    .setSmallIcon(R.drawable.warning) 
    .setContentIntent(pendIntent) 
    .build(); 

    mNotificationManager = (NotificationManager) getSystemService(Context.NOTIFICATION_SERVICE); 
    mNotificationManager.notify(123456, noti2); 
    } 

    // ...  

} 

Answer 1

检查，我发现我的问题问一次正确的答案，更确切地说在另一个顶端，在这里：Pending intent extras are received only when activity is paused。也许它会帮助meone。

Answer 2

使用TextUtils

if (!TextUtils.isEmpty(recMessage)) { 

// here your require condition 

}