Question

我有这个代码并且它正在运行（来自https://stackoverflow.com/a/3586943/1187014的答案），但我想尝试稍微修改一下：

NSString *text = @"Forgot password?";

if ([_labelForgotPassword respondsToSelector:@selector(setAttributedText:)])
{
    // iOS6 and above : Use NSAttributedStrings
    const CGFloat fontSize = 13;
    UIFont *boldFont = [UIFont boldSystemFontOfSize:fontSize];
    UIFont *regularFont = [UIFont systemFontOfSize:fontSize];
    UIColor *foregroundColor = [UIColor whiteColor];

    // Create the attributes
    NSDictionary *attrs = [NSDictionary dictionaryWithObjectsAndKeys:
                           boldFont, NSFontAttributeName,
                           foregroundColor, NSForegroundColorAttributeName, nil];
    NSDictionary *subAttrs = [NSDictionary dictionaryWithObjectsAndKeys:
                              regularFont, NSFontAttributeName, nil];
    const NSRange range = NSMakeRange(16,0);

    // Create the attributed string (text + attributes)
    NSMutableAttributedString *attributedText =
    [[NSMutableAttributedString alloc] initWithString:text
                                           attributes:attrs];
    [attributedText setAttributes:subAttrs range:range];

    // Set it in our UILabel and we are done!
    [_labelForgotPassword setAttributedText:attributedText];
} else {
    // iOS5 and below
    // Here we have some options too. The first one is to do something
    // less fancy and show it just as plain text without attributes.
    // The second is to use CoreText and get similar results with a bit
    // more of code. Interested people please look down the old answer.

    // Now I am just being lazy so :p
    [_labelForgotPassword setText:text];

}

如果我有多个文字，请说：

NSString *text1 = @"Forgot password?"; // relates with UILabel _labelForgotPassword
NSString *text2 = @"I agree with terms and condition"; // relates with UILabel _labelTerms
NSString *text3 = @"Your country is not listed yet?"; // relates with UILabel _labelCountry

我想到的第一个方法是使用嵌套的IF，但是当我有大量需要归因的文本时，嵌套的IF会非常难看，对吧？

那么，如何在方法中创建该代码，以便我可以提供字符串，_label的名称，范围等，并将结果返回给特定的UILabel。它全部在viewDidLoad下触发。不是按下按钮，或其他东西。

谢谢。

Answer 1

我理解的是您希望将相同的属性逻辑应用于所有标签。如果要仅将其用于UILabel，则可以在UILabel上创建类别。

类别的语法应该是这样的：

+(NSMutableAttributedString *) convertToAttributedText: (NSString *) text withFont: (UIFont *) font
{
   // write the above logic here
   //return the attributed text;
}

您可以将text1 / text2 / text3传递给此api，您将获得属性文本。

label.attributedtext = [NSString convertToAttributedText: text withFont:font];

您可以根据需要配置此API参数。

希望这有帮助。

多文本的属性

1 个答案: