如果首选项更改则刷新活动
我有一个带有应用程序设置的 PreferenceActivity，如果某些首选项发生更改，我想刷新活动。
例如，我有一个复选框负责布局中的附加选项卡，当选中复选框时必须显示选项卡。为了捕获此事件，我使用了 OnSharedPreferenceChangeListener。但是这个监听器监听这个复选框的每次点击，并且每次、每次点击都执行一些操作（你的逻辑），即使设置确实没有改变。仅当设置确实发生更改时，我才想刷新我的活动。如果之前是“OFF”，现在变成“ON”，在这种情况下我想刷新，但如果我更改为OFF - ON - OFF，我不想刷新。
如何捕捉真正的变化以及如何在活动中处理这个变化？
谢谢！
I have a PreferenceActivity with settings for my app and I want to refresh activity if some preferences was changed.
For example I have a checkbox which responsible for addtional tab in my layout, when checkbox is checked tab must be shown. To catch this event I used OnSharedPreferenceChangeListener. But this listener listen every click on this checkbox and do something (your logic) every time, every click even though setting really was not changed. I want to refresh my activity only if setting was really changed. If earlier was "OFF" and now become "ON" in this case I want to refresh, but if I changed OFF - ON - OFF I don't want to refresh.
How to catch really changes and how to handle this in activity?
Thanks!
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步骤#1：在您的主要 Activity 上实现
OnSharedPreferenceChangeListener。步骤#2：维护一个
boolean数据成员，最初为false，只要您感兴趣的复选框发生更改，您就可以切换该成员。步骤#3：在
onStart()或onResume()中，如果boolean数据成员为true，则刷新活动并将数据成员设置为false。Step #1: Implement the
OnSharedPreferenceChangeListeneron your main activity.Step #2: Maintain a
booleandata member, initiallyfalse, which you toggle whenever your checkbox of interest is changed.Step #3: In
onStart()oronResume(), if thebooleandata member istrue, refresh the activity and set the data member tofalse.