Ios 当我设置按钮标题时，有淡出和淡出效果

当我使用

setTitle:forState:

方法设置按钮标题时，会出现淡出和淡入效果

- (void)respondsToTextField:(UITextField *)sender {

    if ([sender.text isEqualToString:@""]) {


        [_cancleOrConfirmButton setTitle:@"Cancel" forState:UIControlStateNormal];

    }else {

        [_cancleOrConfirmButton setTitle:@"Search" forState:UIControlStateNormal];

    }

}

---

如何解决？

设置按钮标题时，如果不想产生效果，可以先将

标题设置为可设置。text

试试这个：

- (void)respondsToTextField:(UITextField *)sender {

    if ([sender.text isEqualToString:@""]) {

        _cancleOrConfirmButton.titleLabel.text = @"Cancel";
        [_cancleOrConfirmButton setTitle:@"Cancel" forState:UIControlStateNormal];

    }else {

        _cancleOrConfirmButton.titleLabel.text = @"Search";
        [_cancleOrConfirmButton setTitle:@"Search" forState:UIControlStateNormal];

    }

}

试试看

- (void)respondsToTextField:(UITextField *)sender {

    if ([sender.text isEqualToString:@""]) {

       [UIView performWithoutAnimation:^{
           [_cancleOrConfirmButton setTitle:@"Cancel" forState:UIControlStateNormal];
          [_cancleOrConfirmButton layoutIfNeeded];
    }]; 

    }else {

    [UIView performWithoutAnimation:^{
       [_cancleOrConfirmButton setTitle:@"Search" forState:UIControlStateNormal];
       [_cancleOrConfirmButton layoutIfNeeded];
    }]; 

    }
}

---

请尝试此操作，因为它在我的代码中工作：

[UIView setAnimationsEnabled:NO];
[_cancleOrConfirmButton setTitle:@"Cancel" forState:UIControlStateNormal];
[UIView setAnimationsEnabled:YES];