单击通知时恢复活动

Question

我已经创建了一个管理短信的应用程序,我已经创建了通知,但是当我点击它们时它启动了另一个活动,我想知道如何检查一个活动是否已经停止并恢复它.

以下是用于创建pendingintent的代码:

private void createNotification(SmsMessage sms, Context context){

    final NotificationManager nm = (NotificationManager)context.getSystemService(Context.NOTIFICATION_SERVICE);

    String contentTitle = "";


    // construct the Notification object.
        final NotificationCompat.Builder  builder = new NotificationCompat.Builder(context)
        .setContentTitle(contentTitle)
         .setContentText(sms.getMessageBody())
         .setSmallIcon(R.drawable.ic_launcher)
         .setLargeIcon(getIconBitmap())
         .setNumber(nmessages);

        builder.setAutoCancel(true);

        //(R.drawable.stat_sample, tickerText,
          //      System.currentTimeMillis());

        // Set the info for the views that show in the notification panel.
        //notif.setLatestEventInfo(this, from, message, contentIntent);
        /*
        // On tablets, the ticker shows the sender, the first line of the message,
        // the photo of the person and the app icon.  For our sample, we just show
        // the same icon twice.  If there is no sender, just pass an array of 1 Bitmap.
        notif.tickerTitle = from;
        notif.tickerSubtitle = message;
        notif.tickerIcons = new Bitmap[2];
        notif.tickerIcons[0] = getIconBitmap();;
        notif.tickerIcons[1] = getIconBitmap();;
        */

     // Creates an explicit intent for an Activity in your app
        Intent resultIntent = new Intent(context, BasicActivity.class);

        resultIntent.setFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP | Intent.FLAG_ACTIVITY_SINGLE_TOP);
        // Because clicking the notification opens a new ("special") activity, there's
        // no need to create an artificial back stack.
        PendingIntent resultPendingIntent =
            PendingIntent.getActivity(
            context,
            0,
            resultIntent,
            PendingIntent.FLAG_UPDATE_CURRENT
        );


       // Ritardo in millisecondi



     builder.setContentIntent(resultPendingIntent);

     nm.notify(R.drawable.ic_drawer, builder.build());

Answer 1

你需要在你的PendingIntent中设置标志......就像FLAG_UPDATE_CURRENT一样.

这就是全部. http://developer.android.com/reference/android/app/PendingIntent.html

编辑1:我误解了这个问题.

以下是具有相同问题但已解决的主题的链接:

从通知中恢复活动

通知恢复活动

意图恢复以前暂停的活动(从通知中调用)

Android:从以前的位置恢复应用程序

请阅读上述答案以获得完整的解决方案,并告诉我它是否有效.

Answer 2

将此行添加到应用程序清单文件中的相应活动中。

android:launchMode="singleTask"

例如：

<activity
android:name=".Main_Activity"
android:label="@string/title_main_activity"
android:theme="@style/AppTheme.NoActionBar"
android:launchMode="singleTask" />