从通知中单击时，使用 backstack 的向上导航不起作用

Question

我正在从通知中打开一个 activity，可以正常打开。但是，我想在单击 'back button' 时打开它的父 activity，目前它直接退出应用程序。我希望它导航到 HomeScreenActivity。

这是清单声明 -

<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

我在 android 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);

而且， Here 是 link.

此外，请参阅 this 答案以获取更多参考资料。

Answer 2

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 Activity，因此当按下“返回”按钮时它将转到主页而不是退出应用程序。

Answer 3

解-

我在 addParentStack(MyTrialActivity.class); 中也添加了我的 child activity
它按预期工作。我认为添加 addNextIntent() 应该已经这样做了，尽管它没有那样工作..

Answer 4

我已经正确设置了所有内容，但它仍然无法正常工作，可能是您需要卸载并重新安装该应用程序。当您运行应用程序时，清单的某些更改似乎没有正确更新！

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