Android实现桌面悬浮小火箭效果

概述本文实例为大家分享了Android实现悬浮小火箭效果的具体代码，供大家参考，具体内容如下

本文实例为大家分享了AndroID实现悬浮小火箭效果的具体代码，供大家参考，具体内容如下

思路

使用serivce在后台启动小火箭
小火箭使用windowmanager实现。
用ontoch监听实现小火箭的拖拽。

代码实现

public class RocketService extends Service {   private WindowManager mWM;   private VIEw vIEw;   private int startX ;   private int startY ;   private LayoutParams params;   @OverrIDe   public IBinder onBind(Intent intent) {      return null ;   }   @OverrIDe   public voID onCreate() {      super .onCreate();     System. out .println("服务创建。。。。" );      mWM = (WindowManager) getSystemService(WINDOW_SERVICE );      winWIDth = mWM.getDefaultdisplay(). getWIDth();      winHeight = mWM .getDefaultdisplay().getHeight ();      params = new WindowManager.LayoutParams();      params. height = WindowManager.LayoutParams.WRAP_CONTENT ;      params. wIDth = WindowManager.LayoutParams.WRAP_CONTENT ;      params. flags = WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON          | WindowManager.LayoutParams.FLAG_NOT_FOCUSABLE ;      params. format = PixelFormat. TRANSLUCENT ;      params. type = WindowManager.LayoutParams.TYPE_PHONE ;      params. gravity = Gravity. left + Gravity. top;      vIEw = LayoutInflater.from( this).inflate(R.layout. rocket,null );      //拿到 imagevIEw，设置帧动画     ImageVIEw ivRocket = (ImageVIEw) vIEw .findVIEwByID(R.ID. rocket);     ivRocket.setimageResource(R.drawable. rocket );     AnimationDrawable drawable = (AnimationDrawable) ivRocket.getDrawable();     drawable.start();      mWM.addVIEw( vIEw,params);      // 设置vIEw的触摸事件，让它可以被拖拽      vIEw.setontouchListener( new OntouchListener() {        @OverrIDe        public boolean ontouch(VIEw v,MotionEvent event) {          switch (event.getAction()) {          case MotionEvent. ACTION_DOWN:             startX = ( int ) event.getRawX();             startY = ( int ) event.getRawY();             break ;          case MotionEvent. ACTION_MOVE:             int dx = (int ) (event.getRawX() - startX );             int dy = (int ) (event.getRawY() - startY );             // 更新浮窗位置             params. x += dx;             params. y += dy;             // 限制窗口坐标不超过屏幕             if (params .x < 0) {               params. x = 0;            }             if (params .x > winWIDth - vIEw .getWIDth()) {               params. x = winWIDth - vIEw .getWIDth();            }             if (params .y < 0) {               params. y = 0;            }             if (params .y > winHeight - vIEw .getHeight()) {               params. y = winHeight - vIEw .getHeight();            }             mWM.updateVIEwLayout( vIEw,params );             startX = ( int ) event.getRawX();             startY = ( int ) event.getRawY();             break ;          case MotionEvent. ACTION_UP:             // 手指抬起起，需要发射火箭，限定发射火箭的范围             if (params .x > 0 && params. x < winWIDth                 && params. y > winHeight - 500) {               sendRocket();            }             break ;          }          return true ;// 不再把事件传递给onClick处理       }     });   }   private Handler mHandler = new Handler() {      @OverrIDe      public voID handleMessage(Message msg) {          int y = msg.arg1 ;          params. y = y;          mWM.updateVIEwLayout( vIEw,params);     }   };   private int winWIDth ;   private int winHeight ;   // 发射火箭   private voID sendRocket() {      // 用子线程更新y轴      new Thread(new Runnable() {        @OverrIDe        public voID run() {          int pos = 1000;          for (int i=0; i <= 10; i++) {               int y = pos-100*i;               //休眠100ms发消息               try {                 Thread. sleep(100);               } catch (InterruptedException e) {                  // Todo auto-generated catch block                 e.printstacktrace();               }               Message msg = Message.obtain();               msg. arg1 = y;               mHandler.sendMessage(msg);          }       }     }).start();   }   @OverrIDe   public voID onDestroy() {      // Todo auto-generated method stub      super .onDestroy();      if (mWM != null && vIEw != null) {        mWM.removeVIEw( vIEw);        vIEw = null ;     }   }}

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