android浮层图片拖动并且可点击效果

@Override  public void onResume() {    super.onResume();    createView();     }@Overridepublic void onPause() {  super.onPause();  / 在程序退出(Activity销毁）时销毁悬浮窗口  if(floatView!=null && windowManager !=null) {    windowManager.removeView(floatView);    floatView=null;    windowManager = null;    windowManagerParams = null;  }}private void createView() {    if(floatView!=null) return ;    CmsAPI cmsAPI = RestAdapterUtils.getRestAPI(Config.NEW_CMS_URL, CmsAPI.class, this);    cmsAPI.getFloatingAd(new Callback<AdFloating>() {//请求数据                 @Override                 public void success(AdFloating adFloating, Response response) {                   if (adFloating != null && "0".equals(adFloating.getErrorCode())) {                     long startTime = adFloating.getStarttime();                     long endTime = adFloating.getEndtime();                     long currentTime = System.currentTimeMillis();//                     LOGD(startTime + " +++++ "+endTime +" "+currentTime +"  "+(currentTime > startTime && currentTime < endTime));                     if (currentTime > startTime && currentTime < endTime) {//活动的有效期                       floatView = new FloatView(getApplicationContext());                       floatView.setOnClickListener(MainActivity.this);                       int height = 240;                       int width = 110;                       float ratio= 1.35f;                       if (!TextUtils.isEmpty(adFloating.getImg2())) {                         try {                           height = Integer.parseInt(adFloating.getImg2h());                           width = Integer.parseInt(adFloating.getImg2w());                           ratio = (float) width / height;                         } catch (Exception e) {                           ratio = 1.35f;                         }                       }//                       floatView.setAspectRatio(ratio);//图片的大小                       floatView.setImageURI(Uri.parse(adFloating.getImg2()));//设置图片的网络地址//                       floatView.setImageResource(R.drawable.face_icon); // 这里简单的用自带的icon来做演示                       // 获取WindowManager                       windowManager = (WindowManager) getApplicationContext().getSystemService(Context.WINDOW_SERVICE);                       // 设置LayoutParams(全局变量）相关参数                       windowManagerParams = ((MiGuApplication) getApplication()).getWindowParams();                       windowManagerParams.type = WindowManager.LayoutParams.TYPE_PHONE; // 设置window type                       windowManagerParams.format = PixelFormat.RGBA_8888; // 设置图片格式，效果为背景透明                       // 设置Window flag                       windowManagerParams.flags = WindowManager.LayoutParams.FLAG_NOT_TOUCH_MODAL                           | WindowManager.LayoutParams.FLAG_NOT_FOCUSABLE;                      /*                      * 注意，flag的值可以为：                      * LayoutParams.FLAG_NOT_TOUCH_MODAL 不影响后面的事件                      * LayoutParams.FLAG_NOT_FOCUSABLE 不可聚焦                      * LayoutParams.FLAG_NOT_TOUCHABLE 不可触摸                      */                       // 调整悬浮窗口至左上角，便于调整坐标                       windowManagerParams.gravity = Gravity.LEFT | Gravity.TOP;                       // 以屏幕左上角为原点，设置x、y初始值                       DisplayMetrics dm = new DisplayMetrics();                       getWindowManager().getDefaultDisplay().getMetrics(dm);                       int screenWidth = dm.widthPixels;                       int screenHeigh = dm.heightPixels;                       int x = screenWidth - SystemTools.dip2px(MainActivity.this, 100);                       int y= screenHeigh - SystemTools.dip2px(MainActivity.this, 200);                       windowManagerParams.x = x;                       windowManagerParams.y = y;                       // 设置悬浮窗口长宽数据                       windowManagerParams.width = width;//设置窗口的宽度为图片大小                       windowManagerParams.height =height;//设置窗口的高度为图片大小//                       windowManagerParams.width = WindowManager.LayoutParams.WRAP_CONTENT;//                       windowManagerParams.height =WindowManager.LayoutParams.WRAP_CONTENT;                       // 显示myFloatView图像                       windowManager.addView(floatView, windowManagerParams);                       return;                     }                   }                 }                 @Override                 public void failure(RetrofitError error) {//网络请求数据失败                  LOGE(error.getMessage());                 }               });  }  public void onClick(View v) {//图片的点击事件    Intent intent = new Intent(MainActivity.this, ActivitiesDetails.class);    startActivity(intent);  }

public class FloatView extends SimpleDraweeView {  private float mTouchX;  private float mTouchY;  private float x;  private float y;  private float mStartX;  private float mStartY;  private OnClickListener mClickListener;  private WindowManager windowManager = (WindowManager) getContext()      .getApplicationContext().getSystemService(Context.WINDOW_SERVICE);  // 此windowManagerParams变量为获取的全局变量，用以保存悬浮窗口的属性  private WindowManager.LayoutParams windowManagerParams = ((MiGuApplication) getContext()      .getApplicationContext()).getWindowParams();  public FloatView(Context context) {    super(context);  }  public FloatView(Context context, AttributeSet attrs) {    super(context, attrs);  }  private long curtime=0;  @Override  public boolean onTouchEvent(MotionEvent event) {//获取到状态栏的高度    Rect frame = new Rect();    getWindowVisibleDisplayFrame(frame);    int statusBarHeight = frame.top;    System.out.println("statusBarHeight:"+statusBarHeight);// 获取相对屏幕的坐标，即以屏幕左上角为原点    x = event.getRawX();    y = event.getRawY() - statusBarHeight; // statusBarHeight是系统状态栏的高度    switch (event.getAction()) {      case MotionEvent.ACTION_DOWN: // 捕获手指触摸按下动作// 获取相对View的坐标，即以此View左上角为原点        mTouchX = event.getX();        mTouchY = event.getY();        mStartX = x;        mStartY = y;        break;      case MotionEvent.ACTION_MOVE: // 捕获手指触摸移动动作        updateViewPosition();        curtime=System.currentTimeMillis();        break;      case MotionEvent.ACTION_UP: // 捕获手指触摸离开动作//        if(System.currentTimeMillis()-curtime>100){//          break;//        }        updateViewPosition();        mTouchX = mTouchY = 0;        if (Math.abs(x - mStartX) < 5 && Math.abs(y - mStartY) < 5) {//轻微拖动算点击          if(mClickListener!=null) {            mClickListener.onClick(this);          }        }        break;    }    return true;  }  @Override  public void setOnClickListener(OnClickListener l) {    this.mClickListener = l;  }  private void updateViewPosition() {// 更新浮动窗口位置参数    windowManagerParams.x = (int) (x - mTouchX);    windowManagerParams.y = (int) (y - mTouchY);    windowManager.updateViewLayout(this, windowManagerParams); // 刷新显示  }}