iOS-按钮60s倒计时

来源：互联网发布：淘宝商品商家流程编辑：程序博客网时间：2024/04/30 07:39

__block int timeout=60;//倒计时时间

dispatch_queue_t queue =dispatch_get_global_queue(DISPATCH_QUEUE_PRIORITY_DEFAULT,0);

self.timer =dispatch_source_create(DISPATCH_SOURCE_TYPE_TIMER,0, 0,queue);

dispatch_source_set_timer(self.timer,dispatch_walltime(NULL,0),1.0*NSEC_PER_SEC,0); //每秒执行

dispatch_source_set_event_handler(self.timer, ^{

if(timeout<=0){//倒计时结束，关闭

dispatch_source_cancel(self.timer);

dispatch_async(dispatch_get_main_queue(), ^{

//设置界面的按钮显示根据自己需求设置

[self.codeButtonsetTitle:@"获取验证码"forState:UIControlStateNormal];

self.codeButton.userInteractionEnabled =YES;

});

}else{

// int minutes = timeout / 60;

int seconds = timeout %61;

NSString *strTime = [NSStringstringWithFormat:@"%.2d", seconds];

dispatch_async(dispatch_get_main_queue(), ^{

//设置界面的按钮显示根据自己需求设置

NSLog(@"____%@",strTime);

[self.codeButtonsetTitle:[NSStringstringWithFormat:@"(%@)",strTime]forState:UIControlStateNormal];

self.codeButton.userInteractionEnabled =NO;

});

timeout--;

}

});

dispatch_resume(self.timer);

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