单击通知即可转到当前活动

我正在使用这个解决方案：如何使通知意图恢复而不是制定新意图？ https://stackoverflow.com/questions/3305088/how-to-make-notification-intent-resume-rather-than-making-a-new-intent

当我正常运行我的应用程序时，我工作得很好。但是我的应用程序有共享功能。

当我选择要从图库应用程序共享的图像并在我的活动中打开它时，我会在活动中创建一条通知。我希望当用户单击通知时它会打开现有活动（由图库应用程序打开）

问题是，当我单击通知时，它不会恢复该活动，而是打开该活动的新实例或之前已打开的另一个实例

编辑： 更多解释

我的应用程序称为 ShareApp，活动称为 ShareActivity 问题是，当我通过图库应用程序打开 ShareActivity 时，会在图库应用程序任务堆栈的顶部创建 ShareActivity 的实例。现在，当我创建指向我的 ShareActivity 的通知时，我使用以下意图：

Intent intent = new Intent(this, ShareActivity.class);
intent.addFlags(Intent.FLAG_ACTIVITY_SINGLE_TOP);
intent.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);

问题是，当我单击通知时，它指向 ShareApp 任务堆栈中的 ShareActivity 实例，而不是图库应用程序任务堆栈中。

知道如何指向正确的任务堆栈吗？

编辑2：我的代码

        int defaults = Notification.FLAG_NO_CLEAR;
        NotificationCompat.Builder mBuilder =
                    new NotificationCompat.Builder(this)
                    .setSmallIcon(R.drawable.ic_launcher)
                    .setContentTitle(getString(R.string.app_name))
                        .setContentText(text)
                        .setDefaults(defaults);
        Intent intent = new Intent(this, this.getClass());
        intent.addFlags(Intent.FLAG_ACTIVITY_SINGLE_TOP);
        intent.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);

        PendingIntent pendingIntent = PendingIntent.getActivity(this, 0, intent, PendingIntent.FLAG_CANCEL_CURRENT);

        mBuilder.setContentIntent(pendingIntent);
        NotificationManager mNotificationManager =
            (NotificationManager) getSystemService(Context.NOTIFICATION_SERVICE);
        mNotificationManager.notify(_ID, mBuilder.build());

编辑3：adb shell dumpsys活动（应用David的代码后https://stackoverflow.com/a/16901603/1334268 https://stackoverflow.com/a/16901603/1334268)

我的应用程序称为 shareApp，我的活动是 ShareActivity

在点击通知之前：

Main stack:
    TaskRecord{41965708 #6 A com.android.gallery3d}
    Intent { act=android.intent.action.MAIN cat=[android.intent.category.LAUNCHER] flg=0x10200000 cmp=com.android.gallery3d/.app.Gallery bnds=[364,50][108,108]}
      Hist #2: ActivityRecord{417ccc28 com.yeahman.shareapp/.ShareActivity}
        Intent { act=android.intent.action.SEND_MULTIPLE typ=image/* cmp=com.yeahman.shareapp/.ShareActivity (has extras) }
        ProcessRecord{41c868d0 6088:com.yeahman.shareapp/10116}
      Hist #1: ActivityRecord{4135e540 com.android.gallery3d/.app.Gallery}
        Intent { act=android.intent.action.MAIN cat=[android.intent.category.LAUNCHER] flg=0x10200000 cmp=com.android.gallery3d/.app.Gallery bnds=[364,50][108,108] }

点击通知后：

 Main stack:
    TaskRecord{41965708 #6 A com.android.gallery3d}
    Intent { act=android.intent.action.MAIN cat=[android.intent.category.LAUNCHER] flg=0x10200000 cmp=com.android.gallery3d/.app.Gallery bnds=[364,50][108,108]}
      Hist #3: ActivityRecord{4169f358 com.android.gallery3d/.app.Gallery}
        Intent { flg=0x20000000 cmp=com.android.gallery3d/.app.Gallery bnds=[0,205][480,301] }
        ProcessRecord{4175dd28 5808:com.android.gallery3d/10036}
      Hist #2: ActivityRecord{417ccc28 com.yeahman.shareapp/.ShareActivity}
        Intent { act=android.intent.action.SEND_MULTIPLE typ=image/* cmp=com.yeahman.shareapp/.ShareActivity (has extras) }
        ProcessRecord{41c868d0 6088:com.yeahman.shareapp/10116}
      Hist #1: ActivityRecord{4135e540 com.android.gallery3d/.app.Gallery}
        Intent { act=android.intent.action.MAIN cat=[android.intent.category.LAUNCHER] flg=0x10200000 cmp=com.android.gallery3d/.app.Gallery bnds=[364,50][108,108] }

    Notification.Builder mBuilder =
            new Notification.Builder(this)
            .setSmallIcon(R.drawable.cmplayer)
            .setContentTitle("CoderoMusicPlayer")
            .setContentText("PLayer0!");

    Intent resultIntent = new Intent(this, AndroidBuildingMusicPlayerActivity.class);
    resultIntent.setAction(Intent.ACTION_MAIN);
    resultIntent.addCategory(Intent.CATEGORY_LAUNCHER);

    PendingIntent pendingIntent = PendingIntent.getActivity(this, 0,
            resultIntent, 0);

    mBuilder.setContentIntent(pendingIntent);
    NotificationManager mNotificationManager =
        (NotificationManager) getSystemService(NOTIFICATION_SERVICE);
    mNotificationManager.notify(1, mBuilder.build());

只需复制代码并将其粘贴到您的主启动器活动中。