iOS获取短信验证码倒计时的两种实现方法

转载  2017-05-18   作者:APP叫我取个帅气的昵称   我要评论
本篇文章主要介绍了iOS获取短信验证码倒计时的两种实现方法,小编觉得挺不错的,现在分享给大家,也给大家做个参考。一起跟随小编过来看看吧
方法一: 网上用的很多的一种,不多说,直接上代码.
-(void)startTime{ __block int timeout= 60; //倒计时时间 dispatch_queue_t queue = dispatch_get_global_queue(DISPATCH_QUEUE_PRIORITY_DEFAULT, 0); dispatch_source_t _timer = dispatch_source_create(DISPATCH_SOURCE_TYPE_TIMER, 0, 0,queue); dispatch_source_set_timer(_timer,dispatch_walltime(NULL, 0),1.0*NSEC_PER_SEC, 0); //每秒执行 dispatch_source_set_event_handler(_timer, ^{ if(timeout<=0){ //倒计时结束,关闭 dispatch_source_cancel(_timer); dispatch_async(dispatch_get_main_queue(), ^{ [self.getIdentifyCodeBt setTitle:@"获取验证码" forState:UIControlStateNormal]; self.getIdentifyCodeBt.userInteractionEnabled = YES; [self.getIdentifyCodeBt setTitleColor:THEME_RED forState:UIControlStateNormal]; self.getIdentifyCodeBt.backgroundColor = [UIColor whiteColor]; self.getIdentifyCodeBt.layer.borderColor = THEME_RED.CGColor; }); }else{ dispatch_async(dispatch_get_main_queue(), ^{ [UIView beginAnimations:nil context:nil]; [UIView setAnimationDuration:1]; [self.getIdentifyCodeBt setTitle:[NSString stringWithFormat:@"%zd秒后失效",timeout] forState:UIControlStateNormal]; [self.getIdentifyCodeBt setTitleColor:[UIColor whiteColor] forState:UIControlStateNormal]; self.getIdentifyCodeBt.backgroundColor = [UIColor lightGrayColor]; self.getIdentifyCodeBt.layer.borderColor = [UIColor clearColor].CGColor; self.getIdentifyCodeBt.clipsToBounds = YES; [UIView commitAnimations]; self.getIdentifyCodeBt.userInteractionEnabled = NO; }); timeout--; } }); dispatch_resume(_timer); }
到时直接调用就可以了。 方法二:利用分类 给UIButton新建一个分类
.h文件如下
#import <UIKit/UIKit.h> @interface UIButton (XSCountDown) - (void)xs_beginCountDownWithDuration:(NSTimeInterval)duration; - (void)xs_stopCountDown; @end
.m文件如下
#import "UIButton+XSCountDown.h" #import "ThemeColor.h" static NSTimer *_countTimer; static NSTimeInterval _count; static NSString *_title; @implementation UIButton (XSCountDown) - (void)xs_beginCountDownWithDuration:(NSTimeInterval)duration { _title = self.titleLabel.text; _count = duration; _countTimer = [NSTimer scheduledTimerWithTimeInterval:1.0 target:self selector:@selector(xs_updateTitle) userInfo:nil repeats:YES]; [[NSRunLoop mainRunLoop] addTimer:_countTimer forMode:NSRunLoopCommonModes]; self.userInteractionEnabled = NO; [self setTitleColor:[UIColor whiteColor] forState:UIControlStateNormal]; self.backgroundColor = [UIColor lightGrayColor]; self.layer.borderColor = [UIColor clearColor].CGColor; self.clipsToBounds = YES; } - (void)xs_stopCountDown { [_countTimer invalidate]; _countTimer = nil; _count = 60.0; [self setTitle:_title forState:UIControlStateNormal]; self.userInteractionEnabled = YES; } - (void)xs_updateTitle { NSString *countString = [NSString stringWithFormat:@"%lis 后失效", (long)_count - 1]; self.userInteractionEnabled = NO; [self setTitle:countString forState:UIControlStateNormal]; if (_count-- <= 1.0) { [self xs_stopCountDown]; [self setTitleColor:THEME_RED forState:UIControlStateNormal]; self.backgroundColor = [UIColor whiteColor]; self.layer.borderColor = THEME_RED.CGColor; } } @end
然后在controller里直接调用分类.h文件里的方法就ok了
[self.verifyBt xs_beginCountDownWithDuration:60.0];
以上就是本文的全部内容,希望对大家的学习有所帮助,也希望大家多多支持脚本之家。

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