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#define SEC 60

//验证码按钮点击事件

-(void)registSendButtonClick{

    UITextField *tf=(UITextField *)[self.view viewWithTag:101];     NSString *num=@"^[1][3578][0-9]{9}$";     NSPredicate *regextestmobile = [NSPredicate predicateWithFormat:@"SELF MATCHES %@", num];     if ([regextestmobile evaluateWithObject:tf.text] == NO) {         [self createRegistAlert:1];     } else {         [self downRegistCode:tf.text];         [self performSelector:@selector(sendRegistCodeButtonClick:) withObject:[NSNumber numberWithInt:SEC] afterDelay:0];     } } //验证码按钮点击变化事件 - (void)sendRegistCodeButtonClick:(NSNumber *)second{     if ([second integerValue] == 0){         self.sendButton.enabled=YES;         [_sendButton setBackgroundImage:[UIImage imageNamed:@"Send-out"] forState:UIControlStateNormal];         _sendLabel.text = @"发送验证";     }else{         self.sendButton.enabled=NO;         [_sendButton setBackgroundImage:[UIImage imageNamed:@"Repeat"] forState:UIControlStateNormal];         int i = [second intValue];         _sendLabel.text=[NSString stringWithFormat:@"%is后重发",i];         [self performSelector:@selector(sendRegistCodeButtonClick:) withObject:[NSNumber numberWithInt:i-1] afterDelay:1];     } }

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