有一个和storyboard链接的推入segue,然后用prepareForSegue 方法:
- (void)prepareForSegue:(UIStoryboardSegue *)segue sender:(id)sender
{
if ([[segue identifier] isEqualToString:@"start"] && self.name.textField.text == nil)
{
UIAlertView *message = [[UIAlertView alloc] initWithTitle:@"Test"
message:@"Test
delegate:self
cancelButtonTitle:@"OK"
otherButtonTitles:nil];
[message show];
}
}
实现功能是:if条件满足,就弹出一个alert框,然后执行segue。但是我需要它满足只显示警告框,不链接执行segue。应该怎么办?