ios - 处理 UICollectionView Cell 内 UITextFiled 的键盘返回操作

Question

我有一个带有部分的UIcollectionView。 CollectionView Cell 由一个 UITextFiled 组成。我创建了一个带有两个箭头按钮的键盘 inputAccessoryView ，如下所示。

现在我的要求是当用户按下箭头按钮时，下一个文本字段应该成为第一响应者。我正在努力如何获取当前选定的文本字段实例和下一个文本字段，因为文本字段是在 CollectionView Cell 内动态生成的。请分享一些如何实现这一目标的想法。

CollectionView Cell 类

@implementation ItemCell

@synthesize txtTitle;

- (id)initWithFrame:(CGRect)frame
{
    self = [super initWithFrame:frame];
    if (self) {
        // Initialization code
        txtTitle = [[UITextField alloc] initWithFrame:CGRectMake(5.0, 5.0, 60.0, 30.0)];
        [txtTitle setKeyboardType:UIKeyboardTypeDecimalPad];

        UIToolbar* keyboardToolbar = [[UIToolbar alloc] init];
        [keyboardToolbar sizeToFit];

        UIBarButtonItem *prevBarButton = [[UIBarButtonItem alloc]
                                          initWithTitle:@"<" style:UIBarButtonItemStylePlain target:self action:@selector(prevButtonPressed)];

        UIBarButtonItem *nextBarButton = [[UIBarButtonItem alloc]
                                          initWithTitle:@">" style:UIBarButtonItemStylePlain target:self action:@selector(nextButtonPressed)];

        UIBarButtonItem *flexBarButton = [[UIBarButtonItem alloc]
                                          initWithBarButtonSystemItem:UIBarButtonSystemItemFlexibleSpace
                                          target:nil action:nil];

        UIBarButtonItem *doneBarButton = [[UIBarButtonItem alloc]
                                          initWithBarButtonSystemItem:UIBarButtonSystemItemDone
                                          target:self action:@selector(doneButtonPressed)];
        keyboardToolbar.items = @[prevBarButton, nextBarButton, flexBarButton, doneBarButton];
        self.txtTitle.inputAccessoryView = keyboardToolbar;


        [self.contentView addSubview:txtTitle];
    }
    return self;
}

-(void)prevButtonPressed{
}

-(void)nextButtonPressed{
}

-(void)doneButtonPressed
{
    [self.txtTitle resignFirstResponder];
}

View Controller

- (UICollectionViewCell *)collectionView:(UICollectionView *)cv cellForItemAtIndexPath:(NSIndexPath *)indexPath
{

    ItemCell *iCell = [cv dequeueReusableCellWithReuseIdentifier:@"ItemCell" forIndexPath:indexPath];
    iCell.userInteractionEnabled = TRUE;

    iCell.txtTitle.text = [[myArr objectForKey@"section"]objectAtIndex:indexPath.row];

}

Answer 1

我认为您可以使用“标签”来识别选择了哪个文本字段。将“indexPath.row”分配给每个文本字段。这是检测您何时动态创建它的唯一方法