使用后退堆栈向上导航在从通知中单击时不起作用

Question

我正在从通知打开一个活动，它打开正常。但是，我想在单击"后退按钮"时打开它的父活动，目前它直接退出应用程序。我希望它导航到HomeScreenActivity。

这是舱单声明 -

<activity
        android:name="com.discover.activities.MyTrialsActivity"
        android:exported="true"
        android:parentActivityName="com.discover.activities.HomeScreenActivity"
        android:screenOrientation="portrait">
        <meta-data
            android:name="android.support.PARENT_ACTIVITY"
            android:value="com.discover.activities.HomeScreenActivity" />
    </activity>

这是我生成通知的代码 -

public static PendingIntent getAction(Activity context, int actionId) {
    Intent intent;
    PendingIntent pendingIntent;
    intent = new Intent(context, MyTrialsActivity.class);
    //intent.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);
    TaskStackBuilder stackBuilder = TaskStackBuilder.create(context);
    // Adds the back stack
    //stackBuilder.addParentStack(HomeScreenActivity.class);
    stackBuilder.addParentStack(HomeScreenActivity.class);
    // Adds the Intent to the top of the stack
    stackBuilder.addNextIntent(intent);
    // Gets a PendingIntent containing the entire back stack
    pendingIntent =
            stackBuilder.getPendingIntent(0 /*request code */, PendingIntent.FLAG_ONE_SHOT);
    /*pendingIntent = PendingIntent.getActivity(context, 0 *//* Request code *//*, intent,
            PendingIntent.FLAG_UPDATE_CURRENT*//*|PendingIntent.FLAG_ONE_SHOT*//*);*/
    return pendingIntent;
}
/**
 * Create and show a simple notification containing the message.
 *
 * @param message Message to show in notification
 */
public static void sendNotification(Context context, String message, int actionId) {
    PendingIntent pendingIntent = NotifUtils.getAction((Activity) context, actionId);
    Uri defaultSoundUri = RingtoneManager.getDefaultUri(RingtoneManager.TYPE_NOTIFICATION);
    NotificationCompat.Builder notificationBuilder = new NotificationCompat.Builder(context)
            .setSmallIcon(R.mipmap.ic_launcher)
            .setContentTitle("Title")
            .setContentText(message)
            .setAutoCancel(true)
            .setSound(defaultSoundUri)
            .setVibrate(new long[]{1000})
            .setContentIntent(pendingIntent);
    NotificationManager notificationManager =
            (NotificationManager) context.getSystemService(Context.NOTIFICATION_SERVICE);
    notificationManager.notify(0 /* ID of notification */, notificationBuilder.build());
}

Answer 1

我您已

正确设置所有内容，但仍然无法正常工作，可能是您需要卸载并重新安装该应用程序。运行应用程序时，似乎对清单的某些更改未正确更新！

Answer 2

解决方案 -

我也在addParentStack(MyTrialActivity.class);中添加了我的孩子活动
它按预期工作。我认为添加addNextIntent()应该已经这样做了，尽管它不是那样工作的..

Answer 3

我在安卓的文档中找到了解决方案

// Intent for the activity to open when user selects the notification
Intent detailsIntent = new Intent(this, DetailsActivity.class);
// Use TaskStackBuilder to build the back stack and get the PendingIntent
PendingIntent pendingIntent =
        TaskStackBuilder.create(this)
                        // add all of DetailsActivity's parents to the stack,
                        // followed by DetailsActivity itself
                        .addNextIntentWithParentStack(upIntent)
                        .getPendingIntent(0, PendingIntent.FLAG_UPDATE_CURRENT);
NotificationCompat.Builder builder = new NotificationCompat.Builder(this);
builder.setContentIntent(pendingIntent);

和这是链接。

另外，请参阅此答案以获取更多参考。

Answer 4

尝试使用 startActivities（Context context， Intent[] intents），

Intent homeIntent = new Intent(context, HomeScreenActivity.class);
        Intent newIntent = new Intent(context, MyTrialsActivity.class);
        Intent[] intents = new Intent[]{homeIntent, newIntent};
        ContextCompat.startActivities(context, intents);

因此，

我们可以同时启动多个活动，因此在按"返回"按钮时，它将转到主页而不是退出应用程序。