iOS 开发：UILabel 实现 同意用户协议 和 隐私协议 点击变色

下面是使用 UILabel 实现同意用户协议和隐私协议，使文字变蓝色并可点击的 OC 代码示例：

#import "ViewController.h"

@interface ViewController ()

@property (nonatomic, strong) UILabel *agreementLabel;
@property (nonatomic, strong) UILabel *privacyLabel;

@end

@implementation ViewController

- (void)viewDidLoad {
    [super viewDidLoad];
    
    // 创建 UILabel 对象
    self.agreementLabel = [[UILabel alloc] initWithFrame:CGRectMake(50, 100, 200, 30)];
    self.agreementLabel.userInteractionEnabled = YES;
    [self.view addSubview:self.agreementLabel];
    
    self.privacyLabel = [[UILabel alloc] initWithFrame:CGRectMake(50, 150, 200, 30)];
    self.privacyLabel.userInteractionEnabled = YES;
    [self.view addSubview:self.privacyLabel];
    
    // 设置 UILabel 的文本内容
    NSString *agreementText = '同意用户协议';
    NSMutableAttributedString *agreementAttributedString = [[NSMutableAttributedString alloc] initWithString:agreementText];
    
    NSString *privacyText = '隐私协议';
    NSMutableAttributedString *privacyAttributedString = [[NSMutableAttributedString alloc] initWithString:privacyText];
    
    // 设置文本的属性
    [agreementAttributedString addAttribute:NSForegroundColorAttributeName value:[UIColor blueColor] range:NSMakeRange(0, agreementText.length)];
    [privacyAttributedString addAttribute:NSForegroundColorAttributeName value:[UIColor blueColor] range:NSMakeRange(0, privacyText.length)];
    
    // 将属性文本设置给 UILabel
    self.agreementLabel.attributedText = agreementAttributedString;
    self.privacyLabel.attributedText = privacyAttributedString;
    
    // 添加点击手势
    UITapGestureRecognizer *agreementTapGesture = [[UITapGestureRecognizer alloc] initWithTarget:self action:@selector(agreementLabelTapped)];
    [self.agreementLabel addGestureRecognizer:agreementTapGesture];
    
    UITapGestureRecognizer *privacyTapGesture = [[UITapGestureRecognizer alloc] initWithTarget:self action:@selector(privacyLabelTapped)];
    [self.privacyLabel addGestureRecognizer:privacyTapGesture];
}

- (void)agreementLabelTapped {
    NSLog('用户协议被点击');
    // 在此处处理同意用户协议的逻辑
}

- (void)privacyLabelTapped {
    NSLog('隐私协议被点击');
    // 在此处处理隐私协议的逻辑
}

@end

在上述代码中，首先创建了两个 UILabel 对象，分别是 agreementLabel 和 privacyLabel，并设置了它们的 frame 和 userInteractionEnabled 属性。

接着，创建了两个 NSMutableAttributedString 对象，分别用于设置同意用户协议和隐私协议的文本。然后使用 addAttribute:value:range: 方法将文本的颜色属性设置为蓝色。

最后，将 NSMutableAttributedString 对象设置给对应的 UILabel，并添加了点击手势，分别对应用户协议和隐私协议的点击事件。在点击事件的处理方法中，可以处理相应的逻辑。