Android 根据坐标获取控件方法

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http://www.2cto.com/kf/201501/370226.html
Android 根据坐标获取控件方法
2015-01-15 0 个评论来源：陈英有
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/**
     * 根据坐标获取相对应的子控件<br>
     * 在Activity使用
     *
     * @param x坐标
     * @param y坐标
     * @return 目标View
     */
    publicView getViewAtActivity(intx, inty) {
        // 从Activity里获取容器
        View root = getWindow().getDecorView();
        returnfindViewByXY(root, x, y);
    }
 
    /**
     * 根据坐标获取相对应的子控件<br>
     * 在重写ViewGroup使用
     *
     * @param x坐标
     * @param y坐标
     * @return 目标View
     */
    publicView getViewAtViewGroup(intx, inty) {
        returnfindViewByXY(this, x, y);
    }
 
    privateView findViewByXY(View view, intx, inty) {
        View targetView = null;
        if(view instanceofViewGroup) {
            // 父容器,遍历子控件
            ViewGroup v = (ViewGroup) view;
            for(inti = 0; i < v.getChildCount(); i++) {
                targetView = findViewByXY(v.getChildAt(i), x, y);
                if(targetView != null) {
                    break;
                }
            }
        }else{
            targetView = getTouchTarget(view, x, y);
        }
        returntargetView;
 
    }
 
    privateView getTouchTarget(View view, intx, inty) {
        View targetView = null;
        // 判断view是否可以聚焦
        ArrayList<view> TouchableViews = view.getTouchables();
        for(View child : TouchableViews) {
            if(isTouchPointInView(child, x, y)) {
                targetView = child;
                break;
            }
        }
        returntargetView;
    }
 
    privateboolean isTouchPointInView(View view, intx, inty) {
        int[] location = newint[2];
        view.getLocationOnScreen(location);
        intleft = location[0];
        inttop = location[1];
        intright = left + view.getMeasuredWidth();
        intbottom = top + view.getMeasuredHeight();
        if(view.isClickable() && y >= top && y <= bottom && x >= left
                && x <= right) {
            returntrue;
        }
        returnfalse;
    }
</view>
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