iOS:以编程方式设置UILabel的字体大小

Question

我正在尝试设置UILabel的字体大小.无论我放什么价值,文字大小似乎都没有改变.这是我正在使用的代码.

[self setTitleLabel:[[UILabel alloc] initWithFrame:CGRectMake(320.0,0.0,428.0,50.0)]];
[[self contentView] addSubview:[self titleLabel]];
UIColor *titlebg = [UIColor clearColor];
[[self titleLabel] setBackgroundColor:titlebg];
[[self titleLabel] setTextColor:[UIColor blackColor]];
[[self titleLabel] setFont:[UIFont fontWithName:@"System" size:36]];

Answer 1

尝试[UIFont systemFontOfSize:36]或[UIFont fontWithName:@"HelveticaNeue" size:36] 即[[self titleLabel] setFont:[UIFont systemFontOfSize:36]];

Answer 2

Objective-C的:

[label setFont: [label.font fontWithSize: sizeYouWant]];

迅速:

label.font = label.font.fontWithSize(sizeYouWant)

只需更改UILabel的字体大小.

Answer 3

Swift 3.0/Swift 4.2

labelName.font = labelName.font.withSize(15)

Answer 4

如果您正在寻找快速代码:

var titleLabel = UILabel()
titleLabel.font = UIFont(name: "HelveticaNeue-UltraLight",
                         size: 20.0)

Answer 5

这段代码非常适合我.

  UILabel *label = [[UILabel alloc]initWithFrame:CGRectMake(15,23, 350,22)];
  [label setFont:[UIFont systemFontOfSize:11]];

Answer 6

在 Swift 3.0 中，您可以使用以下代码：

let textLabel = UILabel(frame: CGRect(x:containerView.frame.width/2 - 35, y: 
    containerView.frame.height/2 + 10, width: 70, height: 20))
    textLabel.text = "Add Text"
    textLabel.font = UIFont(name: "Helvetica", size: 15.0) // set fontName and Size
    textLabel.textAlignment = .center
    containerView.addSubview(textLabel) // containerView is a UIView