/**
     * 防止快速点击
     * @param ev
     * @return
     */
    @Override
    public boolean dispatchTouchEvent(MotionEvent ev) {
        if (ev.getAction() == MotionEvent.ACTION_DOWN) {
            if (isFastDoubleClick()) {
                return true;
            }
        }
        return super.dispatchTouchEvent(ev);
    }

    private long lastClickTime=System.currentTimeMillis();
    private  boolean isFastDoubleClick() {
        long time = System.currentTimeMillis();
        long timeD = time - lastClickTime;
        if (timeD >= 0 && timeD <= 1000) {
            return true;
        } else {
            lastClickTime = time;
            return false;
        }
    }