ios - 循环遍历和编辑UITextField占位符不起作用

我有一个UIView，在UIVIew内添加了一个UIScrollView，其中包含另一个UIView和UITextFields列表。我正在使用以下代码尝试遍历所有视图并选择UITextfields。问题是，尽管正在发生循环，但找不到任何UITextfields。

- (void)styleUITextFields {

for (UIView *view in [self.view subviews]) {
    if ([view isKindOfClass:[UITextField class]]) {
        UITextField *textField = (UITextField *)view;

        // Do whatever you want with the text field.
    }

}

这就是我将UIScollView添加到UIView的方式

- (void)addForm {

[self styleSegmentController];
[self styleUITextFields];

CGRect screenRect = [[UIScreen mainScreen] bounds];
CGFloat screenWidth = screenRect.size.width;
CGFloat screenHeight = screenRect.size.height;

[self.scrollViewForm setContentSize:CGSizeMake(screenWidth, self.scrollViewForm.frame.size.height)];
[self.scrollViewForm setFrame:CGRectMake(0, 56, screenWidth, screenHeight - 56)];

[self.view addSubview:self.scrollViewForm];

}

关于为什么这可能不起作用的任何建议。

最佳答案

 - (void)styleUITextFields:(UIView*) view {

    for (UIView *subview in [view subviews]) {
        if ([subview isKindOfClass:[UITextField class]]) {
            UITextField *textField = (UITextField *)view;

            // Do whatever you want with the text field.
        } else { // look insde the subview for more views.
           [self styleUITextFields: subview];
         }

    }


- (void)addForm {

    [self styleSegmentController];
    [self styleUITextFields: self.view];

    CGRect screenRect = [[UIScreen mainScreen] bounds];
    CGFloat screenWidth = screenRect.size.width;
    CGFloat screenHeight = screenRect.size.height;

    [self.scrollViewForm setContentSize:CGSizeMake(screenWidth, self.scrollViewForm.frame.size.height)];
    [self.scrollViewForm setFrame:CGRectMake(0, 56, screenWidth, screenHeight - 56)];

    [self.view addSubview:self.scrollViewForm];

}

关于ios - 循环遍历和编辑UITextField占位符不起作用，我们在Stack Overflow上找到一个类似的问题：https://stackoverflow.com/questions/35063713/