OC 简单封装UIAlertController实现单按钮弹窗和双按钮弹窗

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最新推荐文章于 2025-05-23 11:26:16 发布

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本文链接：https://blog.youkuaiyun.com/qq_20933903/article/details/83989090

本文介绍了一个自定义的iOS AlertView类，用于创建带有单按钮或双按钮的弹出视图。提供了详细的实现代码，包括如何设置按钮的颜色和点击事件。同时，展示了如何在项目中调用这个类来显示不同类型的弹窗。

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1.代码如下：

@interface AlertView : UIView
+ (AlertView *)shareAlertView;
/**带有单按钮的弹出视图 颜色可以不填*/
- (void)alertWithTitle:(NSString *)title message:(NSString *)message btnTitle:(NSString *)btnTitle btnTitleColor:(nullable UIColor *)btnTitleColor completion:(void(^)(void))completion;
/**带有双按钮的弹出视图 颜色可以不填*/
- (void)alertWIthTitle:(NSString *)title message:(NSString *)message leftBtnTitle:(NSString *)leftBtnTitle leftBtnTitleColor:(nullable UIColor *)leftBtnTitleColor leftBtnClicked:(void(^)(void))leftBtnClicked rightBtnTitle:(NSString *)rightBtnTitle rightBtnTitleColor:(nullable UIColor *)rightBtnTitleColor rightBtnClicked:(void(^)(void))rightBtnClicked;
@end

#import "AlertView.h"

@implementation AlertView

/*
// Only override drawRect: if you perform custom drawing.
// An empty implementation adversely affects performance during animation.
- (void)drawRect:(CGRect)rect {
    // Drawing code
}
*/
+ (AlertView *)shareAlertView {
    static AlertView *view = nil;
    static dispatch_once_t onceToken;
    dispatch_once(&onceToken, ^{
        view = [[AlertView alloc]init];
        
    });
    return view;
}
- (void)alertWithTitle:(NSString *)title message:(NSString *)message btnTitle:(nonnull NSString *)btnTitle btnTitleColor:(nullable UIColor*)btnTitleColor  completion:(void (^)(void))completion {
    UIAlertController *alertC = [UIAlertController alertControllerWithTitle:title message:message preferredStyle:UIAlertControllerStyleAlert];
    UIAlertAction *action = [UIAlertAction actionWithTitle:btnTitle style:UIAlertActionStyleCancel handler:^(UIAlertAction * _Nonnull action) {
        completion();
    }];
    if (btnTitleColor) {
        [action setValue:btnTitleColor  forKey:@"_titleTextColor"];
    }
    [alertC addAction:action];
    [[AlertView shareAlertView].viewController presentViewController:alertC animated:YES completion:nil];
}
- (void)alertWIthTitle:(NSString *)title message:(NSString *)message leftBtnTitle:(NSString *)leftBtnTitle leftBtnTitleColor:(nullable UIColor *)leftBtnTitleColor leftBtnClicked:(void (^)(void))leftBtnClicked rightBtnTitle:(NSString *)rightBtnTitle rightBtnTitleColor:(nullable UIColor *)rightBtnTitleColor rightBtnClicked:(void (^)(void))rightBtnClicked {
    UIAlertController *alertC = [UIAlertController alertControllerWithTitle:title message:message preferredStyle:UIAlertControllerStyleAlert];
    UIAlertAction *action1 = [UIAlertAction actionWithTitle:leftBtnTitle style:UIAlertActionStyleDefault handler:^(UIAlertAction * _Nonnull action) {
        leftBtnClicked();
    }];
    if (leftBtnTitleColor) {
        [action1 setValue:leftBtnTitleColor forKey:@"_titleTextColor"];
    }
    
    UIAlertAction *action2 = [UIAlertAction actionWithTitle:rightBtnTitle style:UIAlertActionStyleDefault handler:^(UIAlertAction * _Nonnull action) {
        rightBtnClicked();
    }];
    if (rightBtnTitleColor) {
        [action2 setValue:rightBtnTitleColor forKey:@"_titleTextColor"];
    }
    
    [alertC addAction:action1];
    [alertC addAction:action2];
    
    [[AlertView shareAlertView].viewController presentViewController:alertC animated:YES completion:nil];
}
#pragma 获取当前的视图控制器
- (UIViewController *)viewController {
    UIViewController *vc = [[UIApplication sharedApplication].keyWindow rootViewController];
    return vc;
}
@end

2.使用：

[[AlertView shareAlertView]alertWithTitle:@"提示" message:@"单按钮提示框" btnTitle:@"确定" btnTitleColor:[UIColor orangeColor] completion:^{
                NSLog(@"按钮被点击了");
            }];

[[AlertView shareAlertView]alertWIthTitle:@"提示" message:@"双按钮提示" leftBtnTitle:@"取消" leftBtnTitleColor:[UIColor redColor] leftBtnClicked:^{
                NSLog(@"左按钮点击了");
            } rightBtnTitle:@"确定" rightBtnTitleColor:nil rightBtnClicked:^{
                NSLog(@"右按钮点击了");
            }];