android - 在 Android 中单击主页按钮时更改 bool 值

Question

我试图仅在按下主页按钮时更改 bool 值。谁能告诉我解决方案？

Answer 1

看onUserLeaveHint() :

Called as part of the activity lifecycle when an activity is about to go into the background as the result of user choice. For example, when the user presses the Home key, onUserLeaveHint() will be called, but when an incoming phone call causes the in-call Activity to be automatically brought to the foreground, onUserLeaveHint() will not be called on the activity being interrupted. In cases when it is invoked, this method is called right before the activity's onPause() callback.

在 onUserLeaveHint() 中使 bool 变量为真:

 @Override
    public void onUserLeaveHint() {
                super.onUserLeaveHint();
                //make Boolean true here because this method first  
                //called when user press home key
            }