//发送验证码事件
-(void)countDownAction{
__block int timeout=59; //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(), ^{
//设置界面的按钮显示 根据自己需求设置（倒计时结束后调用）
[self.countDownBtn setTitle:@"发送验证码" forState:UIControlStateNormal];
[self.countDownBtn setTitleColor:[UIColor colorWithHexString:@"f2f2f2"] forState:UIControlStateNormal];
//设置不可点击
self.countDownBtn.userInteractionEnabled = YES;
self.countDownBtn.backgroundColor = [UIColor colorWithHexString:mainColor];
});
}else{
// int minutes = timeout / 60; //这里注释掉了，这个是用来测试多于60秒时计算分钟的。
int seconds = timeout % 60;
NSString *strTime = [NSString stringWithFormat:@"%d", seconds];//倒计时的秒数显示
dispatch_async(dispatch_get_main_queue(), ^{
//设置界面的按钮显示 根据自己需求设置
[self.countDownBtn setTitle:[NSString stringWithFormat:@"%@秒重新发送",strTime] forState:UIControlStateNormal];
[self.countDownBtn setTitleColor:[UIColor colorWithHexString:@"999999"] forState:UIControlStateNormal];
//设置可点击
self.countDownBtn.userInteractionEnabled = NO;
self.countDownBtn.backgroundColor = [UIColor colorWithHexString:@"e6e6e6"];
});
timeout--;
}
});
dispatch_resume(_timer);
}
