问题描述
在 iOS 12 中 UIContextualAction 不会推断图片的颜色。虽然它适用于 iOS 13 及更多。 我已经尝试了图标的所有渲染模式,但仍然无法正常工作。
func tableView(_ tableView: UITableView,trailingSwipeActionsConfigurationForRowAt indexPath: IndexPath) -> UISwipeActionsConfiguration? {
let deleteAction = UIContextualAction(style: .normal,title: "") { _,_,complete in
}
let editaction = UIContextualAction(style: .normal,complete in
}
deleteAction.image = UIImage(named: "trashcan")
editaction.image = UIImage(named: "cellEdit")
let configuration = UISwipeActionsConfiguration(actions: [deleteAction,editaction])
return configuration
}
解决方法
你可以试试这个
class ImageWithoutRender: UIImage {
override func withRenderingMode(_ renderingMode: UIImage.RenderingMode) -> UIImage {
return self
}
}
func tableView(_ tableView: UITableView,trailingSwipeActionsConfigurationForRowAt indexPath: IndexPath) -> UISwipeActionsConfiguration? {
let deleteAction = UIContextualAction(style: .normal,title: "") { _,_,complete in
}
let editAction = UIContextualAction(style: .normal,complete in
}
if let cgImageTrashcan = UIImage(named: "trashcan")?.cgImage {
deleteAction.image = ImageWithoutRender(cgImage: cgImageTrashcan,scale: UIScreen.main.nativeScale,orientation: .up)
}
if let cgImageCellEdit = UIImage(named: "cellEdit")?.cgImage {
editAction.image = ImageWithoutRender(cgImage: cgImageCellEdit,orientation: .up)
}
let configuration = UISwipeActionsConfiguration(actions: [deleteAction,editAction])
return configuration
}