SharedPreferences 在强制关闭后被重置

SharedPreferences being reset after force close(SharedPreferences 在强制关闭后被重置)

问题描述

我已经能够在我的应用程序中成功实现共享首选项，但是如果我通过任务管理器终止应用程序，我会遇到数据被重置/删除的问题.

I have been able to successfully implement Shared Preferences into my application but I have ran into a problem with the data being reset/deleted if I kill the application through a task manager.

我正在使用静态方法进行保存，这样我只需要该方法一次，并且可以在我的应用程序中的任何地方调用它.

I am using a static method for saving, that way I only need the method once and can call it everywhere within my app.

protected static synchronized void save(Context cntx){
    SharedPreferences preferences2 = cntx.getSharedPreferences("BluRealms", 0);
    SharedPreferences.Editor editor = preferences2.edit();
    editor.putBoolean("level", Stats.level);
    editor.commit();
}

一旦我终止我的应用程序，我的所有数据都会在我的 SharedPreferences 保存方法中恢复为默认设置.

As soon as I kill my app all of my data gets set back to the default settings in my SharedPreferences save method.

我也做了一些搜索，发现一些帖子说在清单文件中添加 android:persistent="true" 可以解决问题，但即使这样，数据仍然会重置.

I also did some searching and found a few posts that say adding android:persistent="true" into the of the manifest file would fix the problem, yet the data is still reset even with this.

好吧，我想我找到了一些关于我的问题的信息.此问题突出了三星 Galaxy S 手机无法正确保存 SharedPreferences 的问题，这是我正在测试的设备.http://code.google.com/p/android/issues/detail?id=14359 - 特别是comment 6

Well I think I found a bit of information on my problem. This Issue highlights a problem with Samsung Galaxy S phones not saving SharedPreferences properly, which is the device I am testing on. http://code.google.com/p/android/issues/detail?id=14359 - especially comment 6

如果有更多关于这方面的信息会很棒！

Any more information on this would be great!

推荐答案

好的，我能够通过从我的保存方法中删除受保护的静态"来解决这个问题.

Ok I was able to solve this by removing the "protected static" from my save method.

我没有调用全局保存方法，而是简单地将保存方法放在需要保存的每个类中，然后只在 onPause() 和 onDestroy() 方法中调用保存方法.

Instead of calling a global save method, I simply placed the save method in each class that would need to save and then only call the save method in the onPause() and onDestroy() methods.

我注意到，如果我在一个类中调用 save() 次数过多，当我关闭应用程序时，它似乎也会删除我的 SharedPreferences.

I noticed that if I called save() too many times within a class that also seemed to erase my SharedPreferences when I closed the app.

提示:

不要使用静态方法来获取或设置共享首选项

Do not use static methods for getting or setting shared preferences

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