参考http://blog.csdn.net/samuelltk/article/details/7484533
参考http://www.cnblogs.com/pigpigDD/p/3975852.html
参考http://blog.csdn.net/openglnewbee/article/details/51508301
验证码倒计时示例代码
- (void)viewDidLoad {
[super viewDidLoad];
// Do any additional setup after loading the view from its nib.
self.oldGetVerifyBtn.tag = 59;
}
/**
* 获取原手机号验证码
*/
- (IBAction)getOldVerify {
[self getVerifyWithMobileNum:self.mobileNum];
NSTimer *timer = [NSTimer scheduledTimerWithTimeInterval:1 target:self selector:@selector(refreshBtn1:) userInfo:nil repeats:YES];
[timer fire];
}
- (void)refreshBtn1:(NSTimer *)timer
{
[self refreshBtnWithTimer:timer button:self.oldGetVerifyBtn];
}
- (void)refreshBtnWithTimer:(NSTimer *)timer button:(UIButton *)btn
{
NSInteger i = btn.tag;
btn.enabled = NO;
btn.backgroundColor = [UIColor lightGrayColor];
[btn setTitle:[NSString stringWithFormat:@"剩余%zd秒", i] forState:UIControlStateDisabled];
if (i == 0) {
btn.enabled = YES;
btn.backgroundColor = DBGold;
[btn setTitle:@"获取验证码" forState:UIControlStateNormal];
btn.tag = 59;
[timer invalidate];
return;
}
i--;
btn.tag = i;
}
