问题大概是这样的,如果button的状态是disable的,那么对button settitle是不生效的。需要按照下面这种比较蛋疼的写法
// iOS7适配问题
if (IS_IOS8_LATER) {
[self.confirmButton setTitle:@"预约" forState:UIControlStateNormal];
} else {
self.confirmButton.enabled = YES;
[self.confirmButton setTitle:@"预约" forState:UIControlStateNormal];
self.confirmButton.enabled = NO;
}