UILabel自动换行的两种实现

最新推荐文章于 2022-07-26 16:57:19 发布

原创最新推荐文章于 2022-07-26 16:57:19 发布 · 586 阅读

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本文详细介绍了在视图加载完成后进行的额外设置步骤，包括使用UILabel组件展示文本信息，并调整其大小、字体和换行方式，以实现更丰富的用户交互体验。

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    NSString *str = @"Do any additional setup after loading the view, typically from a nib.";
    //方式1
    UILabel *label = [[UILabel alloc] initWithFrame:CGRectMake(0, 0, 0, 0)];
    label.text = str;
    label.font = [UIFont systemFontOfSize:17.0f];
    label.numberOfLines = 0;
    CGSize size = [label sizeThatFits:CGSizeMake(100, 0)];
    CGRect rect = label.frame;
    rect.size = size;
    label.frame = rect;    
    [self.view addSubview:label];
    [label release];

//方式2    
    size = [str sizeWithFont:[UIFont systemFontOfSize:17.0f] 
           constrainedToSize:CGSizeMake(100, 400) lineBreakMode:UILineBreakModeWordWrap];
    label = [[UILabel alloc] initWithFrame:CGRectMake(200, 0, size.width, size.height)];
    label.text = str;
    label.numberOfLines = 0;
    label.font = [UIFont systemFontOfSize:17.0f];
    label.lineBreakMode = UILineBreakModeWordWrap;
    [self.view addSubview:label];
    [label release];