iOS：单选按钮以编程方式不使用任何图像

Question

我一直致力于创建自定义 ui 控件，想知道如何以编程方式将单选按钮添加到 UIView。

我只找到一种解决方案，但它是针对 mac osx 应用程序控制的。 required 结果的图像如下所示。

限制不想用图片。

谢谢。

Answer 1

单选按钮 - 如下设置拐角半径和棋盘颜色。在 ViewController.h 文件

中取三个按钮

@property(nonatomic,retain) IBOutlet UIButton *btn1;
@property(nonatomic,retain) IBOutlet UIButton *btn2;
@property(nonatomic,retain) IBOutlet UIButton *btn3;

- (IBAction)ClickBtn1:(id)sender;
- (IBAction)ClickBtn2:(id)sender;
- (IBAction)ClickBtn3:(id)sender;

并在 ViewDidLoad 方法中。

- (void)viewDidLoad
{
    [super viewDidLoad];

    self.btn1.layer.cornerRadius = 10;
    self.btn1.layer.borderColor = [[UIColor blackColor] CGColor];

    self.btn2.layer.cornerRadius = 10;
    self.btn2.layer.borderColor = [[UIColor blackColor] CGColor];

    self.btn3.layer.cornerRadius = 10;
    self.btn3.layer.borderColor = [[UIColor blackColor] CGColor];

    // default

    [self.btn1 setTitle:@"." forState:UIControlStateNormal];
    [self.btn2 setTitle:@"" forState:UIControlStateNormal];
    [self.btn3 setTitle:@"" forState:UIControlStateNormal];

}

点击按钮动作。

- (IBAction)ClickBtn1:(id)sender
{
    [self.btn1 setTitle:@"." forState:UIControlStateNormal];
    [self.btn2 setTitle:@"" forState:UIControlStateNormal];
    [self.btn3 setTitle:@"" forState:UIControlStateNormal];
}
- (IBAction)ClickBtn2:(id)sender
{
    [self.btn2 setTitle:@"." forState:UIControlStateNormal];
    [self.btn1 setTitle:@"" forState:UIControlStateNormal];
    [self.btn3 setTitle:@"" forState:UIControlStateNormal];
}
- (IBAction)ClickBtn3:(id)sender
{
    [self.btn3 setTitle:@"." forState:UIControlStateNormal];
    [self.btn1 setTitle:@"" forState:UIControlStateNormal];
    [self.btn2 setTitle:@"" forState:UIControlStateNormal];
}

在您的 StoryBoard 按钮视图中，将按钮的高度和宽度设置为以下 (20,20)。取标题名称点（.）及其字体大小System 44.0并设置边缘如下图。

您的单选按钮是：

iOS：单选按钮以编程方式不使用任何图像

iOS : Radio Button Programatically Without using any Image

objective-c

radio-button

ios