工具方法，扩展Android中View的可触摸区域

QQUiUtils.java

    /**
     * 扩展View的触摸区域
     * @param view 需要扩展触摸区域的View
     * @param left 左边扩展范围（单位px，下同）
     * @param top 上边扩展范围
     * @param right 右边扩展范围
     * @param bottom 下边扩展范围
     */
    public static void extendTouchArea(final View view, final int left, final int top, final int right, final int bottom) {
        if (view == null || view.getParent() == null) {
            return;
        }

        final View parent = (View) view.getParent();
        parent.post(new Runnable() {
            @Override
            public void run() {
                Rect touchArea = new Rect();
                view.getHitRect(touchArea);
                touchArea.left += left;
                touchArea.top += top;
                touchArea.right += right;
                touchArea.bottom += bottom;
                parent.setTouchDelegate(new TouchDelegate(touchArea, view));
            }
        });
    }