版权声明:本文为博主原创文章,未经博主允许不得转载。 https://cloud.tencent.com/developer/article/1337837
在开发过程中我们有时需要单独设置UIView的坐标x或y或width或height,可如果直接设置我们发现并不能直接设置:
如代码: imageV.frame.origin.x = 0;
这样的代码是错误的,我们需要先获取获取UIView的frame,然后设置获取到的frame的一些属性,最后再将设置完成后的frame赋值给UIView。
代码:
CGRect frame = imageV.frame;
frame.origin.x = 0;
imageV.frame= frame;
如果想要像 imageV.frame.origin.x = 0;一样直接设置,我们可以为UIView增添一个分类,分类代码:
//
// UIView+Frame.m
//
// Created by apple on 15-3-5.
// Copyright (c) 2015年 apple. All rights reserved.
//
#import "UIView+Frame.h"
@implementation UIView (Frame)
{
CGRect frame = self.frame;
frame.origin.x = x;
self.frame = frame;
}
{
return self.frame.origin.x;
}
{
CGRect frame = self.frame;
frame.origin.y = y;
self.frame = frame;
}
{
return self.frame.origin.y;
}
{
return self.frame.size.width;
}
{
CGRect frame = self.frame;
frame.size.width = width;
self.frame = frame;
}
{
return self.frame.size.height;
}
{
CGRect frame = self.frame;
frame.size.height = height;
self.frame = frame;
}
@end