我已经尝试了所有方法,但没有任何反应。它只是保持黑色。我错过了什么吗?我尝试使用 UIButton 的 ImageView ,但它没有做出任何改变。
lazy var addFriendButton: UIButton = {
self.friendButton = UIButton(type: .Custom)
self.friendButton.bounds = CGRectMake(0, 0, 120, 80)
self.friendButton.backgroundColor = UIColor.redColor()
self.friendButton.translatesAutoresizingMaskIntoConstraints = false
self.friendButton.setTitle("Add Friend", forState: .Normal)
self.friendButton.titleLabel?.font = UIFont(name: "HelveticaNeue", size: 12)
self.friendButton.addTarget(self, action: #selector(addFriend), forControlEvents: .TouchUpInside)
let addButtonImage = UIImage(named: "AddFriend")
addButtonImage?.imageWithRenderingMode(.AlwaysTemplate)
self.friendButton.setImage(addButtonImage, forState: .Normal)
self.friendButton.setTitleColor(UIColor.darkGrayColor(), forState: .Normal)
self.friendButton.imageView?.image = addButtonImage
// Not working here
self.friendButton.imageView?.tintColor = UIColor.whiteColor()
return self.friendButton
}()
最佳答案
正如它在 documentation 中所说的那样:
- withRenderingMode(_:)
Creates and returns a new image object with the specified rendering mode.
所以只写 addButtonImage?.withRenderingMode(.alwaysTemplate)
不会改变 addButtonImage
。使用方法是这样的:
var addButtonImage = UIImage(named: "AddFriend")
addButtonImage = addButtonImage?.withRenderingMode(.alwaysTemplate)
或者您可以简单地使用这一行:
let addButtonImage = UIImage(named: "AddFriend")?.withRenderingMode(.alwaysTemplate)
关于ios - 如何在自定义类型的 UIButton 中设置 ImageView 的颜色?,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/39431695/