gdx 源码分析摘录

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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,
                    visible ? 1 : 0);
            mCaller.sendMessage(msg);

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

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