Runtime 控制UIButton的暴力点击

最新推荐文章于 2021-05-26 06:37:11 发布

iOSmling

最新推荐文章于 2021-05-26 06:37:11 发布

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分类专栏： ios

本文链接：https://blog.youkuaiyun.com/q862171879/article/details/50010485

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本文介绍了一种在iOS应用中防止按钮被快速连续点击的方法，通过Objective-C的Category特性为UIButton添加了间隔时间控制功能。

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大体上就是把 UIControl category 把点击事件同时指定到自己的方法里面让每一个button都执行

#import <UIKit/UIKit.h>


@interface UIControl (Interval)


@property (nonatomic, assign) NSTimeInterval cjr_acceptEventInterval;// 可以用这个给重复点击加间隔



@end

#import "UIControl+Interval.h"
#import <objc/runtime.h>

@interface UIControl()
@property (nonatomic, assign) NSTimeInterval cjr_acceptEventTime;
@end

@implementation UIControl (Interval)

static const char *UIControl_acceptEventInterval = "UIControl_acceptEventInterval";
static const char *UIControl_acceptEventTime = "UIControl_acceptEventTime";

- (NSTimeInterval )cjr_acceptEventInterval
{
    return [objc_getAssociatedObject(self, UIControl_acceptEventInterval) doubleValue];
}

- (void)setCjr_acceptEventInterval:(NSTimeInterval)cjr_acceptEventInterval
{
    objc_setAssociatedObject(self, UIControl_acceptEventInterval, @(cjr_acceptEventInterval), OBJC_ASSOCIATION_RETAIN_NONATOMIC);
}

- (NSTimeInterval )cjr_acceptEventTime
{
    return [objc_getAssociatedObject(self, UIControl_acceptEventTime) doubleValue];
}

- (void)setCjr_acceptEventTime:(NSTimeInterval)cjr_acceptEventTime
{
    objc_setAssociatedObject(self, UIControl_acceptEventTime, @(cjr_acceptEventTime), OBJC_ASSOCIATION_RETAIN_NONATOMIC);
}

+ (void)load
{
    //获取着两个方法
    Method systemMethod = class_getInstanceMethod(self, @selector(sendAction:to:forEvent:));
    SEL sysSEL = @selector(sendAction:to:forEvent:);
    
    Method myMethod = class_getInstanceMethod(self, @selector(cjr_sendAction:to:forEvent:));
    SEL mySEL = @selector(cjr_sendAction:to:forEvent:);
    
    //添加方法进去
    BOOL didAddMethod = class_addMethod(self, sysSEL, method_getImplementation(myMethod), method_getTypeEncoding(myMethod));
    
    //如果方法已经存在了
    if (didAddMethod)
    {
        class_replaceMethod(self, mySEL, method_getImplementation(systemMethod), method_getTypeEncoding(systemMethod));
    }else
    {
        method_exchangeImplementations(systemMethod, myMethod);
        
    }
    
    //----------------以上主要是实现两个方法的互换,load是gcd的只shareinstance，果断保证执行一次
    
}

- (void)cjr_sendAction:(SEL)action to:(id)target forEvent:(UIEvent *)event
{
    if (NSDate.date.timeIntervalSince1970 - self.cjr_acceptEventTime < self.cjr_acceptEventInterval)
    {
        return;
    }
    
    if (self.cjr_acceptEventInterval > 0)
    {
        self.cjr_acceptEventTime = NSDate.date.timeIntervalSince1970;
    }
    
    [self cjr_sendAction:action to:target forEvent:event];
}
@end

2:使用： #import "UIControl+Interval.h"

- (void)viewDidLoad
{
    [super viewDidLoad];
    // Do any additional setup after loading the view.
    self.navigationItem.title = @"主页";
    UIButton * button = [UIButton buttonWithType:UIButtonTypeCustom];
    button.frame = CGRectMake(200, 200, 100, 40);
    [button setTitle:@"测试" forState:UIControlStateNormal];
    button.cjr_acceptEventInterval = 5.0;
    [button setTitleColor:[UIColor blueColor] forState:UIControlStateNormal];
    [button addTarget:self action:@selector(buttonEvent:) forControlEvents:UIControlEventTouchUpInside];
    [self.view addSubview:button];
}

-(void)buttonEvent:(UIButton *)sender
{
    NSLog(@"点击打印");

}