self.image.frame.width = 20 给出只获取属性错误

self.image.frame.width = 20 give get only property error(self.image.frame.width = 20 给出只获取属性错误)

问题描述

我尝试将图像视图的宽度更改为 20@IBOutlet weak var image: UIImageView! 在 vi​​ewDidLoad 中使用此代码 self.image.frame.width = 20但它给了我错误不能分配给属性: width 是一个只能获取的属性.这意味着什么??抱歉，我是 swift 新手，我不知道这是什么意思.请帮助

i tried to change the width of my Image view to 20 @IBOutlet weak var image: UIImageView! using this code in viewDidLoad self.image.frame.width = 20 but it give me error cannot assign to property: width is a get only property. what does that mean?? sorry i am new to swift i do not know what it mean.please help

推荐答案

get-only 意味着你只能读取这个属性(例如与某物比较)，但不能改变.要设置宽度，您需要:

get-only means you can only read this property (for example to compare with something), but not change. To set width you need this:

self.image.frame.size.width = foo

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