如何在Swift中使用addAttribute

Question

我试图添加到UITextViews的链接，所以我遵循这个职位中的代码。相关的目标-C代码是

NSMutableAttributedString *attributedString = [[NSMutableAttributedString alloc] initWithString:@"This is an example by @marcelofabri_"];
[attributedString addAttribute:NSLinkAttributeName
                         value:@"username://marcelofabri_"
                         range:[[attributedString string] rangeOfString:@"@marcelofabri_"]];

但当我在斯威夫特2中尝试这个

var attributedString = NSMutableAttributedString(string: "This is an example by @marcelofabri_")
attributedString.addAttribute(NSLinkAttributeName, value: "username://marcelofabri_", range: attributedString.string.rangeOfString("/marcelofabri_"))

我知道错误了

不能使用类型的参数列表调用“addAttribute”(字符串、值:字符串、范围:范围？)

我需要改变什么才能让它起作用？

Answer 1

尝试使用NSString来查找范围而不是Swift String

var attributedString = NSMutableAttributedString(string: "This is an example by @marcelofabri_")
attributedString.addAttribute(NSLinkAttributeName, value: "username://marcelofabri_", range: (attributedString.string as NSString).rangeOfString("/marcelofabri_"))

Answer 2

您使用的是Range，而不是所需的NSRange。看一下：

来自斯威夫特范围的NSRange？

Answer 3

@available(iOS 14, *)
extension ColorPickerVC: UIColorPickerViewControllerDelegate {
    
    func colorPickerViewControllerDidSelectColor(_ viewController: UIColorPickerViewController) {
        
        print(viewController.selectedColor.hexCode)
        NotificationCenter.default.post(name: NSNotification.Name(rawValue: "setHexColor"), object: nil, userInfo: ["hexColor": viewController.selectedColor.hexCode])
    }
    
    func colorPickerViewControllerDidFinish(_ viewController: UIColorPickerViewController) {
        NotificationCenter.default.post(name: NSNotification.Name(rawValue: "setHexColor"), object: nil, userInfo: ["hexColor": viewController.selectedColor.hexCode])
        self.view.backgroundColor = viewController.selectedColor
    }
    func canPerformSegueWithIdentifier(identifier: NSString) -> Bool {
        let templates:NSArray = value(forKey: "storyboardSegueTemplates") as! NSArray
        let predicate:NSPredicate = NSPredicate(format: "identifier=%@", identifier)
        
        let filteredtemplates = templates.filtered(using: predicate)
        return (filteredtemplates.count>0)
        
    }
}