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像，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:

For Swift 3:

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

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