前言

開發中常用到的設定UILabel的文字樣式程式碼片段：

NSMutableAttributedString *str = [[NSMutableAttributedString alloc] initWithString:@"Using NSAttributed String，try your best to test attributed string text"];

[str addAttribute:NSForegroundColorAttributeName
            value:[UIColor blueColor]
            range:NSMakeRange(0,5)];
[str addAttribute:NSForegroundColorAttributeName
            value:[UIColor redColor]
            range:NSMakeRange(6,12)];
[str addAttribute:NSForegroundColorAttributeName
            value:[UIColor greenColor]
            range:NSMakeRange(19,6)];
[str addAttribute:NSFontAttributeName
            value:[UIFont fontWithName:@"Arial" size:30.0]
            range:NSMakeRange(0, 5)];
[str addAttribute:NSFontAttributeName
            value:[UIFont fontWithName:@"Arial" size:30.0]
            range:NSMakeRange(6, 12)];
[str addAttribute:NSFontAttributeName
            value:[UIFont fontWithName:@"Arial" size:30.0]
            range:NSMakeRange(19, 6)];

UILabel *attrLabel = [[UILabel alloc] initWithFrame:CGRectMake(20, 150, 320 - 40, 90)];
attrLabel.attributedText = str;
attrLabel.numberOfLines = 0;
 

說明

NSMutableAttributedString類可以新增各種樣式，常用的設定key有：

• NSForegroundColorAttributeName 設定前景色，也就是文字顏色
• NSFontAttributeName 設定字型
• NSBackgroundColorAttributeName 設定背景色

更多內容點選NSMutableAttributedString進去檢視宣告。