保存您的更改在SharedPreference您的壁纸类，即MyWallpaperService使用下面的代码，并根据您的需要修改，希望它的帮助. OnSharedPreferenceChangeMap使用保存数据以前和更新，你只需要设置条件时，你想更新
public void run（）{

/**
 * Service Starting Hierarchy
 *      1) Service:         onCreate()
 *      2) Service:         onCreateEngine()
 *          i) Engine:              onCreate()
 *          ii) Engine:             onSurfaceCreated()
 *          iii) Engine:            onSurfaceChanged()
 *          iv) Engine:             onVisibilityChanged()
 *          v) Engine:              onTouchEvent()                  // if any
 *          vi) Engine:             onSurfaceDestroyed()
 *          iii) Engine:            onDestroy()
 *      3) Service:         onDestroy()
 */

override fun onCreateEngine(): Engine {
    return MyWallpaperEngine()
}

private inner class MyWallpaperEngine : Engine(), SharedPreferences.OnSharedPreferenceChangeListener {

    // A reference to our shared prefs;

    override fun onCreate(surfaceHolder: SurfaceHolder?) {
        super.onCreate(surfaceHolder)

        // Create an instance of CustomEngine
        val customEngine = MyWallpaperEngine()
       // Register the listener to start listening for shared preference changes
        customEngine.registerSharedPreferencesListener()

    }

    // Method to register the listener
    private fun registerSharedPreferencesListener() {
        val sharedPreferences = PreferenceManager.getDefaultSharedPreferences(this)
        sharedPreferences.registerOnSharedPreferenceChangeListener(this)
    }

    // Method to unregister the listener
    private fun unregisterSharedPreferencesListener() {
        val sharedPreferences = PreferenceManager.getDefaultSharedPreferences(this)
        sharedPreferences.unregisterOnSharedPreferenceChangeListener(this)
    }

    override fun onDestroy() {
        super.onDestroy()

        // Unregister the shared preferences listener to avoid memory leaks
        unregisterSharedPreferencesListener()
    }
    override fun onSharedPreferenceChanged(
        sharedPreferences: SharedPreferences?,
        key: String?
    ) {
       //your Changes data 
       //Rest of Code
    }
}

}