Android 调用onSharedPreferenceChanged而不更改任何首选项，并生成LiveWallper

我正在用andengine制作一张现场壁纸。问题在于设置屏幕。当我在预览屏幕中按下设置按钮时，会自动调用onSharedPreferenceChanged（）方法。。我认为除非我改变一些偏好，否则这是不应该发生的。下面是我的实现。有人能告诉我我做错了什么吗

public class LiveWallpaperSettings extends PreferenceActivity implements OnSharedPreferenceChangeListener{

ListPreference listPreferencespeed, listPreferenceConst, listPreferenceCld;
public static boolean mSettingsChanged = false;

@SuppressWarnings("deprecation")
@Override
protected void onCreate(Bundle savedInstanceState) {

    super.onCreate(savedInstanceState);
    addPreferencesFromResource(R.xml.prefs);        
    listPreferencespeed = (ListPreference) findPreference("listPref");
    listPreferenceConst= (ListPreference) findPreference("listPrefConst");
    listPreferenceCld = (ListPreference) findPreference("listPrefCld");

}

@Override
public void onSharedPreferenceChanged(SharedPreferences sharedPreferences, String key) {

    Log.e("LiveWallpaperSettings", "Key :- " + key);
    SharedPreferences customSharedPreference = getSharedPreferences(key, LiveWallpaperSettings.MODE_PRIVATE);
        SharedPreferences.Editor editor = customSharedPreference.edit();
        editor.putString("Speed",listPreferencespeed.getValue());
        editor.putString("Cld", listPreferenceCld.getValue());
        editor.putString("Const", listPreferenceConst.getValue());
        editor.commit();
        mSettingsChanged = true;

    Log.e("LiveWallpaperSettings", "Speed Value after setting " + customSharedPreference.getString("Speed", ""));
    Log.e("LiveWallpaperSettings", "Cloud Value after setting " + customSharedPreference.getString("Cld", ""));
    Log.e("LiveWallpaperSettings", "Constellations Value after setting " + customSharedPreference.getString("Constd", ""));
    Log.e("LiveWallpaperSettings", "mSettingsChanged " + mSettingsChanged);
}



@SuppressWarnings("deprecation")
@Override
protected void onResume() {
    super.onResume();
    // Set up a listener whenever a key changes
    getPreferenceScreen().getSharedPreferences().registerOnSharedPreferenceChangeListener(this);
}

@SuppressWarnings("deprecation")
@Override
protected void onPause() {
    super.onPause();
    // Unregister the listener whenever a key changes
    getPreferenceScreen().getSharedPreferences().unregisterOnSharedPreferenceChangeListener(this);
}



}

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问题可能不在您发布的代码中，而是在设置侦听器的代码中。在代码中查找以下内容：
SharedReferences.RegisterOnSharedReferenceChangeListener（此）
并检查其是否正确放置。例如，如果设置侦听器，然后初始化值，则可能需要颠倒顺序