Java 通知恢复应用程序而不是重新启动

我已经阅读了关于这个问题的多个问题和答案，但是我无法让它们中的任何一个为我工作

我收到一个通知，单击后，我希望将应用程序置于前端并继续，而不是关闭并重新启动

这是我的通知代码

    NotificationCompat.Builder mBuilder =
            new NotificationCompat.Builder(this)
            .setSmallIcon(R.drawable.ic_launcher)
            .setContentTitle("example")
            .setContentText("example");
    // Creates an explicit intent for an Activity in your app
    Intent resultIntent = new Intent(this, MainActivity.class);
    resultIntent.setFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP | Intent.FLAG_ACTIVITY_SINGLE_TOP);
    // The stack builder object will contain an artificial back stack for the
    // started Activity.
    // This ensures that navigating backward from the Activity leads out of
    // your application to the Home screen.
    TaskStackBuilder stackBuilder = TaskStackBuilder.create(this);
    // Adds the back stack for the Intent (but not the Intent itself)
    stackBuilder.addParentStack(MainActivity.class);
    // Adds the Intent that starts the Activity to the top of the stack
    stackBuilder.addNextIntent(resultIntent);
    PendingIntent resultPendingIntent =
            stackBuilder.getPendingIntent(
                0,
                PendingIntent.FLAG_UPDATE_CURRENT
            );
    mBuilder.setContentIntent(resultPendingIntent);
    NotificationManager mNotificationManager =
        (NotificationManager) getSystemService(Context.NOTIFICATION_SERVICE);
    int mId = 0;
    // mId allows you to update the notification later on.
    mNotificationManager.notify(mId, mBuilder.build());

在我的清单文件中我有

        android:launchMode="singleTop"

---

有人能看出哪里出了问题吗？虽然通知拒绝恢复应用程序，而是重新启动应用程序，但我没有收到任何错误。

我最近遇到了一些类似问题，使用以下标志更改您的意图标志：

resultIntent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK | Intent.FLAG_ACTIVITY_SINGLE_TOP);

编辑：并从清单中删除该启动模式

希望它有帮助

通过使用以下内容进行修复：

    NotificationCompat.Builder mBuilder =
            new NotificationCompat.Builder(this)
            .setSmallIcon(R.drawable.ic_launcher)
            .setContentTitle("Sound Asleep")
            .setContentText("Click to play and stop sounds");
    // Creates an explicit intent for an Activity in your app
    final Intent notificationIntent = new Intent(this, MainActivity.class);
    notificationIntent.setAction(Intent.ACTION_MAIN);
    notificationIntent.addCategory(Intent.CATEGORY_LAUNCHER);
    // The stack builder object will contain an artificial back stack for the
    // started Activity.
    // This ensures that navigating backward from the Activity leads out of
    // your application to the Home screen.

    // Adds the back stack for the Intent (but not the Intent itself)
    PendingIntent resultPendingIntent = PendingIntent.getActivity(this,0,notificationIntent,PendingIntent.FLAG_UPDATE_CURRENT);

    mBuilder.setContentIntent(resultPendingIntent);
    NotificationManager mNotificationManager =
        (NotificationManager) getSystemService(Context.NOTIFICATION_SERVICE);
    int mId = 0;
    // mId allows you to update the notification later on.
    mNotificationManager.notify(mId, mBuilder.build());
}

明显地

android:launchMode="singleTop"

---

使用下面的代码，可能会有所帮助

NotificationCompat.Builder mBuilder =
        new NotificationCompat.Builder(this)
        .setSmallIcon(R.drawable.ic_launcher)
        .setContentTitle("Sound Asleep")
        .setContentText("Click to play and stop sounds");
// Creates an explicit intent for an Activity in your app
final Intent notificationIntent = new Intent(this, MainActivity.class);
notificationIntent.setAction(Intent.ACTION_MAIN);
notificationIntent.addCategory(Intent.CATEGORY_LAUNCHER);
// The stack builder object will contain an artificial back stack for the
// started Activity.
// This ensures that navigating backward from the Activity leads out of
// your application to the Home screen.

// Adds the back stack for the Intent (but not the Intent itself)
PendingIntent resultPendingIntent = PendingIntent.getActivity(this,0,notificationIntent,PendingIntent.FLAG_ACTIVITY_REORDER_TO_FRONT);

mBuilder.setContentIntent(resultPendingIntent);
NotificationManager mNotificationManager =
    (NotificationManager) getSystemService(Context.NOTIFICATION_SERVICE);
int mId = 0;
// mId allows you to update the notification later on.
mNotificationManager.notify(mId, mBuilder.build());

---

resultIntent.setFlags（意图.标志\u活动\u重新排序\u到\u前端）；仍然导致应用程序重新启动。也许，您试图带到前台的活动已被破坏？应用程序会在按下按钮时播放声音。在测试这些方法时，我一直在播放声音，最小化应用程序，然后下拉抽签并选择通知。选择通知后，音乐停止，应用程序重新启动。请尝试

singleTask

或

singleInstance

，可能会有所帮助。我认为用声音测试可能是不正确的。当我观看“活动生命周期”时，我使用日志和生命周期回调来打印消息。我尝试过，但应用程序仍在重新加载，这让我很困惑，无法找到原因。只需创建PendingEvent ResultPendingEvent=PendingEvent.getActivities（上下文，0，resultIntent，PendingEvent.FLAG\u UPDATE\u CURRENT）而不使用堆栈生成器即可由于您在resultIntent上设置了标志，因此我认为没有必要删除这些标志并使用-PendingEvent ResultPendingEvent=PendingEvent.getActivity（这个，0，resultIntent，PendingEvent.FLAG\u UPDATE\u CURRENT）；仍在重新启动应用程序。似乎没有什么能解决我的问题。这对我来说很有效，但在manifest android:launchMode=“singleInstance”中更改mId=1。谢谢