意图 - 如果活动是在运行，把它前面，否则启动一个新的（从通知） [英] Intent - if activity is running, bring it to front, else start a new one (from notification)

问题描述

我有一个地狱这样做的，我只是不能看着办吧。 我的应用程序有通知，这是 - 很明显 - 不带任何标志，每次都让我得到彼此的顶部运行多个相同的活动，这是错误的开始一个新的活动

I am having a hell doing this and I just cant figure it out. My app has notifications, which - obviously - without any flags, start a new activity every time so I get multiple same activities running on top of each other which is just wrong.

我希望它做的是将在待定的意图通知规定的活动，到前面如果已经运行，否则启动

What I want it to do is to bring the activity specified in the notifications pending intent, to the front if its is already running, otherwise start it

到目前为止，意图/未决意图发出通知我是

So far the intent/pending intent for that notification I have is

private static PendingIntent prepareIntent(Context context) {
    Intent intent = new Intent(context, MainActivity.class);
    intent.setFlags(Intent.FLAG_ACTIVITY_REORDER_TO_FRONT);

    return PendingIntent.getActivity(context, 0, intent, PendingIntent.FLAG_UPDATE_CURRENT);
}

和古怪有时有效，有时它不。我觉得香港专业教育学院已经尝试过国旗的每一个组合。

and weirdly it sometimes works, sometimes it doesnt .. I feel like Ive already tried every single combination of flags.

感谢

推荐答案

您可以使用此：

<activity 
   android:name=".YourActivity"
   android:launchMode="singleTask"/>

将工作类似于singleInstance，但它不会有一个怪异的动画。

which will work similar to "singleInstance" but it won't have that weird animation.

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