iPhone/iPad UIButton TitleLabel 文本未出现

Question

我创建了一个按钮网格。以下代码创建按钮并显示它们，但按钮上没有文本。有我缺少的设置吗？ （Obj-C 回复没问题，我会双语）

RectangleF frame = new RectangleF (X + 3, Y + 3, cellWidth - 2, cellHeight - 2);
UIButton button = new UIButton (frame);
button.TitleLabel.Text = "Baha'i";
button.TitleLabel.Font = UIFont.FromName ("Helvetica-Bold", 15);
button.TitleLabel.TextColor = UIColor.Black;
button.TitleLabel.Frame = frame;
button.BackgroundColor = UIColor.FromWhiteAlpha(.5f,.5f);
this.AddSubview (button);

Answer 1

我想你想要 setTitle: forState:

[button setTitle:@"Baha'i" forState:UIControlStateNormal]

Answer 2

UIButton继承自UIView，因此添加文本和图像的另一种方法是添加子视图。例子：

// My Image
UIImage *buttonImage = [UIImage imageNamed:@"myImage.png"];
UIImageView *buttonImageView = [[[UIImageView alloc] 
    initWithFrame:CGRectMake(0, 0, 
    buttonImage.size.width,buttonImage.size.height)] autorelease];
[buttonImageView setImage:buttonImage];

// My Label
UILabel* titleLabel = [[[UILabel alloc] 
    initWithFrame:CGRectMake(0, 0, 
    buttonImage.size.width, buttonImage.size.height)] autorelease];
titleLabel.text = @"My Text";
titleLabel.font = [UIFont fontWithName:@"Helvetica-Bold" size: 11.0];
titleLabel.textColor = [UIColor blackColor];
titleLabel.backgroundColor = [UIColor clearColor];
titleLabel.textAlignment = UITextAlignmentCenter;

// Create Button with Image and Label
UIButton *button = [UIButton buttonWithType:UIButtonTypeCustom];
[button addSubview:buttonImageView];
[button addSubview:titleLabel];

Answer 3

UIButton *  selectCountryBtn =  [[UIButton alloc]initWithFrame:CGRectMake(0, 0, 100, 100)];  

[selectCountryBtn setTitle:@"My Title" forState:UIControlStateNormal];

在这里，我以编程方式创建示例按钮，然后设置其普通控件状态的标题，您可以使用自己的按钮对象来设置标题字符串，此外，您还可以通过将 UIControlStateNormal 更改为另一个所需的值来设置另一个控件状态的标题文本州。

Answer 4

就我而言（Swift 4）如下：

btnLogin.setTitle("Welcome, " + var_name, for: [])

Answer 5

对于快速开发者-

button.setTitle("Your button Name", for: .normal)

Answer 6

self.ButtonName.setTitle("Here Put Your variable model", for: .normal)

Answer 7

  self.Button_name.titleLabel.text = @"Your title name";