如何在Swift中更改UIButton图像 [英] How to change UIButton image in Swift

问题描述

我正在尝试使用Swift更改UIButton的图像... 我该怎么办

I am trying to change the image of a UIButton using Swift... What should I do

这是OBJ-C代码.但是我不知道Swift:

This is OBJ-C code.but I don't know with Swift:

[playButton setImage:[UIImage imageNamed:@"play.png"] forState:UIControlStateNormal];

推荐答案

从您的Obc-C代码中，我认为您想为按钮设置图片，因此请尝试以下方式:

From your Obc-C code I think you want to set an Image for button so try this way:

let playButton  = UIButton(type: .Custom)
if let image = UIImage(named: "play.png") {
    playButton.setImage(image, forState: .Normal)
}

简而言之:

playButton.setImage(UIImage(named: "play.png"), forState: UIControlState.Normal)

对于Swift 3:

let playButton  = UIButton(type: .custom)
playButton.setImage(UIImage(named: "play.png"), for: .normal)

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