做

SharedPreferences.OnSharedPreferenceChangeListener spChanged = new
                           SharedPreferences.OnSharedPreferenceChangeListener() {
            @Override
    public void onSharedPreferenceChanged(SharedPreferences sharedPreferences,
            String key) {
        // your stuff here
    }
};

在您的 PreferenceActivity 中，即使其成为您的 PreferenceActivity 类的成员，然后在 PreferenceActivity 中执行 registerOnSharedPreferenceChangeListener(spChanged).onCreate() 方法.

In your PreferenceActivity, ie make it a member of your PreferenceActivity class and then do registerOnSharedPreferenceChangeListener(spChanged) in the PreferenceActivity.onCreate() method.

这就是我所做的，我从来没有遇到过问题.

That's what I do and I never have a problem.

否则是您在侦听器中的条件检查有问题.贴上代码.

Else it's your conditional checking in the listener that is at fault. Post the code.

根据您发布的代码，您应该将 prefs 设为类成员变量，以便它具有全局作用域.

From the code you posted, you should make prefs a class member variable so it has a global scope.

然后做 prefs = PreferenceManager.getDefaultSharedPreferences(getApplicationContext()); 而不是 getSharedPreferences 因为你还没有创建那个文件.

And do prefs = PreferenceManager.getDefaultSharedPreferences(getApplicationContext()); instead of getSharedPreferences because you haven't created that file.

要创建文件，您需要使用 PreferenceManager.要获得 PreferenceManager，请使用 Activity.getPreferenceManager().

To create a file you need to use PreferenceManager. To get a PreferenceManager, use Activity.getPreferenceManager().