使用时的PendingIntent和singleTask不sing​​leInstance尊重？ [英] singleTask and singleInstance not respected when using PendingIntent?

问题描述

我有launchMode活动设置为singleTask：

I have an activity with launchMode set to singleTask:

<activity
    android:name="com.blah.blah.MyActivity"
    android:launchMode="singleTask">
</activity>

我有一个的PendingIntent正在进行的通知，启动这项活动：

I have an ongoing notification with a PendingIntent that launches that activity:

Intent activityIntent = new Intent( this,
                                    MyActivity.class );
TaskStackBuilder stackBuilder = TaskStackBuilder.create( this );
stackBuilder.addParentStack( MyActivity.class );
stackBuilder.addNextIntent( activityIntent );
PendingIntent resultingActivityPendingIntent = stackBuilder.getPendingIntent( REQUEST_CODE,
                                                                              PendingIntent.FLAG_UPDATE_CURRENT );
...
m_notificationBuilder.setContentIntent( resultingActivityPendingIntent );
startForeground( ONGOING_NOTIFICATION_ID,
                 m_notificationBuilder.build() );

当我与现有MyActivity互动，然后我打主页，并通过发射器，MyActivity的 onNewIntent（）如预期被调用。

When I am interacting with an existing MyActivity, then I hit Home and restart MyActivity via the launcher, MyActivity's onNewIntent() gets called as expected.

问题是，当我与现有MyActivity互动，我点击正在进行的通知，新的MyActivity通过的onCreate（），以及现有的创建一种是通过破坏的onDestroy（）。我预计，MyActivity的 onNewIntent（）来代替将被调用。为什么不这样呢？

The problem is that when I am interacting with an existing MyActivity, and I click on the ongoing notification, a new MyActivity is created via onCreate(), and the existing one is destroyed via onDestroy(). I expected that MyActivity's onNewIntent() would be called instead. Why doesn't this happen?

我曾尝试这些答案没有成功：

I have tried these answers without success:

• Intent - 如果活动正在运行，把它前面，否则启动一个新的（从通知）


• How作出通知的简历和无法重新创建活动？


• FLAG_ACTIVITY_REORDER_TO_FRONT忽略（在这种情况下，在用户点击通知时现有的实例不被破坏）

• Intent - if activity is running, bring it to front, else start a new one (from notification)
• How to make notification resume and not recreate activity?
• FLAG_ACTIVITY_REORDER_TO_FRONT ignored (in this case the existing instance is not destroyed when the notification is clicked)

推荐答案

您的问题是由于使用了 TaskStackBuilder 的。这code是造成你的问题：

Your problem is due to the use of TaskStackBuilder. This code is causing your problem:

Intent activityIntent = new Intent( this,
                                MyActivity.class );
TaskStackBuilder stackBuilder = TaskStackBuilder.create( this );
stackBuilder.addParentStack( MyActivity.class );
stackBuilder.addNextIntent( activityIntent );
PendingIntent resultingActivityPendingIntent =
         stackBuilder.getPendingIntent(REQUEST_CODE,
         PendingIntent.FLAG_UPDATE_CURRENT );

当您使用 TaskStackBuilder 这样一来，它设置其他标志中生成的意图 S中的导致任务复位（在任务活动被破坏）的活动被推出了。

When you use TaskStackBuilder this way, it sets additional flags in the generated Intents that cause the task to be reset (all Activities in the task are destroyed) before your Activity gets launched.

而是使用：

Intent activityIntent = new Intent( this,
                                MyActivity.class );
PendingIntent resultingActivityPendingIntent =
         PendingIntent.getActivity(this, REQUEST_CODE,
             activityIntent, PendingIntent.FLAG_UPDATE_CURRENT );

这篇关于使用时的PendingIntent和singleTask不sing​​leInstance尊重？的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！