使用链接IOS更改属性文本颜色

Question

How I can change the attributed text color from blue to white?

When I click on the UITextView the app opens the url, I just need to change the color to white.

My code is in C# but I think it can be converted to swift or objective-c easily.

I have tried this way but it didn't work:

NSMutableAttributedString footerText = new NSMutableAttributedString(myFooterText, new UIStringAttributes
        {
            ForegroundColor = UIColor.White,

            Link = new NSUrl(myLinkString)
        });

        //Set footer text
        MyTextView.AttributedText = footerText;

Answer 1

Sample code snippet

UIStringAttributes attrHyperlink= new UIStringAttributes();
attrHyperlink.UnderlineStyle = NSUnderlineStyle.Single;
attrHyperlink.ForegroundColor = UIColor.Purple.CGColor;


NSMutableAttributedString attString = new NSMutableAttributedString(StringValue);
attString.AddAttributes(attrHyperlink, new NSRange(0,StringValue.Length));
MyTextView.AttributedText = attString;

Try this

Answer 2

Check this Attribute string for Link

NSString *str = @"Link";
 NSMutableAttributedString *aStr = [[NSMutableAttributedString 
 alloc]initWithString:str attributes:nil];
[aStr addAttribute:NSLinkAttributeName value:@"Your Link here" 
range:[str rangeOfString:@"Link"]];
[UITextView appearance].linkTextAttributes = @{ NSForegroundColorAttributeName : UIColor.redColor };
[self.text_View setAttributedText:aStr];
[self.text_View setTextAlignment:NSTextAlignmentNatural];

Answer 3

我通过使用我的自定义文本颜色和下划线实现普通文本视图来修复它。在用户单击时我用我的URL打开浏览器。

Answer 4

See the image attached i feel you want something like this. Use following code snippet. It is working on my end

self.infoTextView.text = @"I am text. I am link.";
  NSString *info = self.infoTextView.text;
    NSRange commaRange = [info rangeOfString:@"I am link."];

    NSMutableAttributedString *infoString = [[NSMutableAttributedString alloc] initWithString:info];
    [infoString addAttribute: NSLinkAttributeName value: @"http://www.google.com" range: commaRange];
    self.infoTextView.tintColor = [UIColor colorWithRed:255.0f/255.0f green:181.0f/255.0f blue:51.0f/255.0f alpha:1.0]; //link color 
    [infoString addAttribute:NSForegroundColorAttributeName value:[UIColor colorWithRed:61.0/255.0 green:82.0/225.0 blue:96.0/255.0 alpha:1.0] range:(NSRange){0, [info length]}]; //original text color

    [infoString addAttribute:NSFontAttributeName value:self.infoTextView.font range:(NSRange){0, [info length]}];
    self.infoTextView.attributedText = infoString;

Answer 5

The accepted answer is more of a workaround than a fix.

To change the link-color I used the code from Dhaval and changed it to Xamarin.iOS. Use the TintColor attribute like so:

var textColor = (Color)Element.GetValue(Label.TextColorProperty);
str.AddAttribute(UIStringAttributeKey.ForegroundColor, textColor.ToUIColor(Color.White), new NSRange(0, str.Length)); // Normal text color
str.AddAttribute(UIStringAttributeKey.Link, new NSUrl(item.Link), new NSRange(item.Start, item.Text.Length)); // Add a link.
            }
Control.TintColor = textColor.ToUIColor(Color.Wheat); // The LINK color
Control.AttributedText = str;