本文共 1662 字，大约阅读时间需要 5 分钟。

一， HandlerCaller的使用

        封装handler；

        1，实现类

              HandlerCaller   mCaller = new HandlerCaller(context, context.getMainLooper(), this, true);

        2，实现回调;

               class XX implements HandlerCaller.Callback

               public void executeMessage(Message message) { }

        3，创建发送message

           Message msg = mCaller.obtainMessageI(MSG_VISIBILITY_CHANGED,

二， Engine

        The actual implementation of a wallpaper. You must implement {@link WallpaperService#onCreateEngine()}

         to return your concrete Engine implementation.

              1，监听屏幕

final BroadcastReceiver mReceiver = new BroadcastReceiver() {            @Override            public void onReceive(Context context, Intent intent) {                if (Intent.ACTION_SCREEN_ON.equals(intent.getAction())) {                    mScreenOn = true;                    reportVisibility();                } else if (Intent.ACTION_SCREEN_OFF.equals(intent.getAction())) {                    mScreenOn = false;                    reportVisibility();                }            }        };

三， class WallpaperService extends Service

         实现了IWallpaperService

四，IWallpaperService.stub

       attach()； 在attach中创建engine

五，IWallpaperEngine

oneway interface IWallpaperEngine {    void setDesiredSize(int width, int height);    void setVisibility(boolean visible);    void dispatchPointer(in MotionEvent event);    void dispatchWallpaperCommand(String action, int x, int y,            int z, in Bundle extras);        void destroy();}控制wallpaper的生命周期，ibinder对象

六： 创建AndroidWallpaperEngine(libgdx封装)

         public class AndroidWallpaperEngine extends Engine

七:  Application

       It sets up a window and rendering surface and manages the * different aspects of your application

转载地址：http://poomi.baihongyu.com/