Android意圖 - >活動交互

Question

我有 一個gcm服務接收器，完成了書。 這裏的主要部分

 //Magick. Create Intent that will show alert. 
    mNotificationManager = (NotificationManager) this.getSystemService(Context.NOTIFICATION_SERVICE); 
    Intent ma = new Intent(this, Home.class); 
    Bundle b = ma.getExtras(); 
    if (b != null && b.containsKey("Alert_call")) 
    {ma.removeExtra("Alert_call");} 
    if (b != null && b.containsKey("Alert_poi")) 
    {ma.removeExtra("Alert_poi");} 

    ma.putExtra("Alert_call", true); 
    ma.putExtra("Alert_poi", msg); 
    PendingIntent contentIntent = PendingIntent.getActivity(this, 0,ma, 0); 

    //Make the notification itself. 
    NotificationCompat.Builder mBuilder = 
      new NotificationCompat.Builder(this) 
    .setSmallIcon(p.GetAlertIconFromType()) 
    .setContentTitle(p.GetAlertHeaderFromType()) 
    .setStyle(new NotificationCompat.BigTextStyle() 
    .bigText(p.coordsAdress + "\n" + p.ShortDesc)) 
    .setSound(RingtoneManager.getDefaultUri(RingtoneManager.TYPE_NOTIFICATION))//Do the ring 
    .setDefaults(Notification.DEFAULT_VIBRATE)//Do the vibe 
    .setDefaults(Notification.DEFAULT_LIGHTS)//Do the Lights blink 
    .setContentText(p.coordsAdress + "\n" + p.ShortDesc); 

    //Send. 
    mBuilder.setContentIntent(contentIntent); 
    mNotificationManager.notify(NOTIFICATION_ID, mBuilder.build()); 

現在，在活動方面我趕上這種意圖的包，看看我是否有這些「Alert_call」 PARAMS。如果是這樣 - 使用這些ti顯示一些特定的信息。

 //Magick. Create Intent that will show alert. 
    mNotificationManager = (NotificationManager) this.getSystemService(Context.NOTIFICATION_SERVICE); 
    Intent ma = new Intent(this, Home.class); 
    Bundle b = ma.getExtras(); 
    if (b != null && b.containsKey("Alert_call")) 
    {ma.removeExtra("Alert_call");} 
    if (b != null && b.containsKey("Alert_poi")) 
    {ma.removeExtra("Alert_poi");} 

    ma.putExtra("Alert_call", true); 
    ma.putExtra("Alert_poi", msg); 
    PendingIntent contentIntent = PendingIntent.getActivity(this, 0,ma, 0); 

    //Make the notification itself. 
    NotificationCompat.Builder mBuilder = 
      new NotificationCompat.Builder(this) 
    .setSmallIcon(p.GetAlertIconFromType()) 
    .setContentTitle(p.GetAlertHeaderFromType()) 
    .setStyle(new NotificationCompat.BigTextStyle() 
    .bigText(p.coordsAdress + "\n" + p.ShortDesc)) 
    .setSound(RingtoneManager.getDefaultUri(RingtoneManager.TYPE_NOTIFICATION))//Do the ring 
    .setDefaults(Notification.DEFAULT_VIBRATE)//Do the vibe 
    .setDefaults(Notification.DEFAULT_LIGHTS)//Do the Lights blink 
    .setContentText(p.coordsAdress + "\n" + p.ShortDesc); 

    //Send. 
    mBuilder.setContentIntent(contentIntent); 
    mNotificationManager.notify(NOTIFICATION_ID, mBuilder.build()); 

- > DisplayView部分

 //Magick. Create Intent that will show alert. 
    mNotificationManager = (NotificationManager) this.getSystemService(Context.NOTIFICATION_SERVICE); 
    Intent ma = new Intent(this, Home.class); 
    Bundle b = ma.getExtras(); 
    if (b != null && b.containsKey("Alert_call")) 
    {ma.removeExtra("Alert_call");} 
    if (b != null && b.containsKey("Alert_poi")) 
    {ma.removeExtra("Alert_poi");} 

    ma.putExtra("Alert_call", true); 
    ma.putExtra("Alert_poi", msg); 
    PendingIntent contentIntent = PendingIntent.getActivity(this, 0,ma, 0); 

    //Make the notification itself. 
    NotificationCompat.Builder mBuilder = 
      new NotificationCompat.Builder(this) 
    .setSmallIcon(p.GetAlertIconFromType()) 
    .setContentTitle(p.GetAlertHeaderFromType()) 
    .setStyle(new NotificationCompat.BigTextStyle() 
    .bigText(p.coordsAdress + "\n" + p.ShortDesc)) 
    .setSound(RingtoneManager.getDefaultUri(RingtoneManager.TYPE_NOTIFICATION))//Do the ring 
    .setDefaults(Notification.DEFAULT_VIBRATE)//Do the vibe 
    .setDefaults(Notification.DEFAULT_LIGHTS)//Do the Lights blink 
    .setContentText(p.coordsAdress + "\n" + p.ShortDesc); 

    //Send. 
    mBuilder.setContentIntent(contentIntent); 
    mNotificationManager.notify(NOTIFICATION_ID, mBuilder.build()); 

現在，我面臨的問題是這樣的：

如果我從這個警報啓動活動 - 一切正常。 但是，如果我有這個活動allready打開（例如睡着），我推這個警報 - 我接受null作爲參數在INtent，或舊的（用於啓動活動）。

所以，問題：

它看起來像我需要得到這個運行的活動意圖，並且在其添加新的數據時，我推警報。

這是正確的嗎？如果是這樣 - 範你請引導我在哪裏閱讀關於它？

Answer 1

解決方案很簡單...

PendingIntent contentIntent = PendingIntent.getActivity(this, 0,ma, PendingIntent.FLAG_UPDATE_CURRENT);