Question

我在UITableViewCells中有UITextFields。文本视图似乎阻止了滚动。当我将我的指尖放在文本视图的界限内并尝试滚动整个表格时，它将不会滚动。在文本视图之外滚动很好。

如何阻止此行为？

Answer 1

似乎避免这种情况的唯一方法是继承UIScrollView并实现

(BOOL)touchesShouldCancelInContentView:(UIView *)view

然后，检测到视图是UITextField并返回YES，否则返回NO。

Answer 2

下面的代码有点hacky但它对我有用，基本上只是将UITextView上的userInteractionEnabled设置为NO，然后在检测到用户点击它时设置为YES。下面是带有textview的自定义单元格的代码，当用户从UITextView中启动滚动时，它会向我滚动。这样做会导致滚动是一个平移手势，而不是点击。

#import "MyCell.h"

@interface MyCell () <UITextFieldDelegate>

@property (weak, nonatomic) IBOutlet UITextField *textField;

@end

@implementation MyCell

- (void)awakeFromNib
{
    self.textField.userInteractionEnabled = NO;
    self.textField.delegate = self;

    UITapGestureRecognizer *tapRecognizer = [[UITapGestureRecognizer alloc] initWithTarget:self action:@selector(didTap:)];
    [self addGestureRecognizer:tapRecognizer];
}

#pragma mark - Private methods

- (void)didTap:(UITapGestureRecognizer *)tapRecognizer
{
    CGPoint location = [tapRecognizer locationInView:self];

    CGRect pointRect = CGRectMake(location.x, location.y, 1.0f, 1.0f);
    if (!CGRectIsNull(CGRectIntersection(pointRect, self.textField.frame))) {
        self.textField.userInteractionEnabled = YES;
        [self.textField becomeFirstResponder];
    } 
}

#pragma mark - UITextFieldDelegate methods

- (void)textFieldDidEndEditing:(UITextField *)textField
{
    self.textField.userInteractionEnabled = NO;
}

@end

UITextField阻止在UITableViewCell中滚动

2 个答案: