ios - 如何证明标签文本的合理性？

Question

我证明标签文本的代码如下:-

-(void)justifyToLabel:(UILabel*)label withStr:(NSString*)str{
    NSMutableParagraphStyle *paragraphStyles = [[NSMutableParagraphStyle alloc] init];
    paragraphStyles.alignment = NSTextAlignmentJustified;
    NSDictionary *attributes = @{NSParagraphStyleAttributeName: paragraphStyles};
    NSAttributedString *attributedString = [[NSAttributedString alloc] initWithString: str attributes: attributes];
    label.attributedText = attributedString;
}

我不知道为什么它不起作用。请给出最佳解决方案。

谢谢

Answer 1

试试下面的代码:

您没有为 firstLineHeadIndent 属性分配任何值，这就是它不起作用的原因。

NSMutableParagraphStyle *paragraphStyles = [[NSMutableParagraphStyle alloc] init];
paragraphStyles.alignment = NSTextAlignmentJustified;      //justified text
paragraphStyles.firstLineHeadIndent = 1.0;                //must have a value to make it work

NSDictionary *attributes = @{NSParagraphStyleAttributeName: paragraphStyles};
NSAttributedString *attributedString = [[NSAttributedString alloc] initWithString: string attributes: attributes];

label.attributedText = attributedString;