将文本颜色和下标应用于 objective-c 中的 NSMutableString

Question

我无法同时应用这两个属性。只有颜色或下标可以应用。这是我的代码

NSMutableAttributedString * attributedText = [[NSMutableAttributedString alloc]initWithString:@"some text"];

[attributedText addAttribute:NSFontAttributeName
                            value:[UIFont fontWithName:@"Lato-Bold" size:16]
                            range:NSMakeRange(14,1)];
[attributedText addAttribute:(NSString *)kCTSuperscriptAttributeName value:@-1 range:NSMakeRange(14,1)];

[attributedText addAttribute:(NSString *)kCTForegroundColorAttributeName value:@{ NSForegroundColorAttributeName : [UIColor colorWithRed:85.0/255.0 green:38.0/255.0 blue:152.0/255.0 alpha:1.0] } range:(NSRange){0,6}];

Answer 1

这是对您的代码可行的更新。

UITextView *textView = [[UITextView alloc]initWithFrame:CGRectMake(20, 100, 200, 44)];
[self.view addSubview:textView];


UIColor *color = [UIColor colorWithRed:85.0/255.0 green:38.0/255.0 blue:152.0/255.0 alpha:1.0];
UIFont *font = [UIFont fontWithName:@"Arial" size:20.0];



NSMutableAttributedString * attributedText = [[NSMutableAttributedString alloc]initWithString:@"some text"];
    [attributedText addAttribute:NSFontAttributeName
                           value:[UIFont fontWithName:@"Arial" size:16]//Lato-Bold, Your font name crahes
                           range:NSMakeRange(8,1)];//x(8) is start index,y(1) is length from start index x(8)


NSDictionary *attrs = @{NSForegroundColorAttributeName : color,NSFontAttributeName:font};

[attributedText addAttributes:attrs range:NSMakeRange(0,6)];//start index start from 0, and length start counting from 1
//[attributedText addAttribute:(NSString *)kCTSuperscriptAttributeName value:@-1 range:NSMakeRange(14,1)];
textView.attributedText = attributedText;

或

你可以试试这个。

UITextView *textView = [[UITextView alloc]initWithFrame:CGRectMake(20, 100, 200, 44)];

NSString *newsTitle = @"Hello";
NSString *sportTtle = @"World";
NSString *title = [NSString stringWithFormat:@"%@ %@", newsTitle,sportTtle];
textView.text = title;

UIColor *color = [UIColor redColor];
UIFont *font = [UIFont fontWithName:@"Arial" size:20.0];

NSDictionary *attrs = @{NSForegroundColorAttributeName : color,NSFontAttributeName:font};

NSMutableAttributedString * attrStr = [[NSMutableAttributedString alloc] initWithAttributedString:textView.attributedText];
[attrStr addAttributes:attrs range:[textView.text rangeOfString:sportTtle]];
textView.attributedText = attrStr;
[self.view addSubview:textView];

Answer 2

你可以试试这个代码

[str addAttribute:(NSString *)kCTSuperscriptAttributeName value:@-1 range:NSMakeRange(14,1)];

[str setAttributes:@{NSForegroundColorAttributeName:[UIColor greenColor]}
              range:(NSRange){0,7}];

将文本颜色和下标应用于 objective-c 中的 NSMutableString

Apply text colour and subscript to NSMutableString in objective-c

objective-c

ios

nsmutableattributedstring