解決Android程序退出後不顯示在近期任務裏

android:excludeFromRecents Whether or not the task initiated by this activity should be excluded from the list of recently used applications ("recent apps"). That is, when this activity is the root activity of a new task, this attribute determines whether the task should not appear in the list of recent apps. "true" if the task should beexcluded from the list; "false" if it should be included. The default value is "false".  

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相反，如果要不出現在近期任務裏麵，可以增加android:excludeFromRecents="true"，但貌似要apk中所有activity都加上才有用。