我想更改图像的色彩,但不能更改,它总是返回白色。我尝试使用Rendring原始图像和模板图像,但仍然无法使用。
我在下面添加了屏幕截图:
请任何人都可以帮助我
public func tableView(_ tableView: UITableView, trailingSwipeActionsConfigurationForRowAt indexPath: IndexPath) -> UISwipeActionsConfiguration? {
guard let cell = tableView.cellForRow(at: indexPath) as? DocumentListCell else {return UISwipeActionsConfiguration()}
let likeAction = UIContextualAction(style: .normal, title: "", handler: { (ac:UIContextualAction, view:UIView, success:(Bool) -> Void) in
print("likeAction ...")
success(true)
})
likeAction.image = #imageLiteral(resourceName: "Favourite_Selected")
likeAction.backgroundColor = UIColor.init(red: 239/255, green: 239/255, blue: 239/255, alpha: 1)
let downloadAction = UIContextualAction(style: .normal, title: "", handler: { (ac:UIContextualAction, view:UIView, success:(Bool) -> Void) in
print("Trash action ...")
})
downloadAction.backgroundColor = UIColor.red//UIColor.init(red: 239/255, green: 239/255, blue: 239/255, alpha: 1)
downloadAction.image = #imageLiteral(resourceName: "Doc_Download_Big")
return UISwipeActionsConfiguration(actions: [likeAction,downloadAction])
}
答案 0 :(得分:0)
Assets.xcassets
,选择所需的图像即可。将
Render As
替换为您需要的一个:
您还可以尝试一些操作:
- 在
UIImageView
内更改tableView
本身的设置:
UIImageView.appearance(whenContainedInInstancesOf: [UITableView.self]).tintColor = UIColor.init(red: 239/255, green: 239/255, blue: 239/255, alpha: 1)
- 尝试在
UIImage
上使用扩展名:
extension UIImage {
func paintOver(with color: UIColor) -> UIImage {
let renderer = UIGraphicsImageRenderer(size: size)
let renderedImage = renderer.image { _ in
color.set()
self.withRenderingMode(.alwaysTemplate).draw(in: CGRect(origin: .zero, size: size))
}
return renderedImage
}
}
使用方法:
likeAction.image = UIImage(named: "Favourite_Selected")?.colored(in: .red)
希望这对您有帮助!
答案 1 :(得分:0)
您必须将背景色的alpha值设置为零才能更改图像颜色。
喜欢这行:-
likeAction.backgroundColor = UIColor.init(红色:239/255,绿色:239/255,蓝色:239/255,alpha:0)