ios - 无法访问 Collection View 单元格信息

Question

您好，我正在尝试通过 UIsegmentedcontrol 访问 UICollection View 单元格信息。

在 Collection View 中，我有四个标签和 UIsegmented 控件。当我点击分段控件时，我想显示标签值。

这是我的代码。

- (UIView *)collectionView:(UICollectionView *)collectionView cellForItemAtIndexPath:(NSIndexPath *)indexPath{
CollectionViewCell *cell = [collectionView dequeueReusableCellWithReuseIdentifier:@"CELL" forIndexPath:indexPath];
cell.mySegmentedControl.tag = indexPath.row;
selectedSegment = cell.mySegmentedControl.selectedSegmentIndex;
[cell.mySegmentedControl addTarget:self action:@selector(segmentValueChanged:) forControlEvents:UIControlEventValueChanged];
cell.caseid.text=[tmpDict objectForKey:@"CaseId"];
caseid = [tmpDict objectForKey:@"CaseId"];
}

- (void) segmentValueChanged: (UISegmentedControl *) sender {
//NSInteger index = sender.tag;
if(sender.selectedSegmentIndex == 0)
{
 NSString *localcaseid = caseid; // it shows default value may be first cell value.
CollectionViewCell * cell = [[CollectionViewCell alloc]init];
NSString *localcaseid = cell.caseid.text; //it prints null value
}
else
{
}

上面的代码对我不起作用。任何帮助将不胜感激。我想显示该特定单元格的信息。

Answer 1

    if(sender.selectedSegmentIndex == 0) {
        NSString *localcaseid = caseid;
        NSIndexPath *tempIndexPath = [NSIndexPath indexPathForRow:sender.tag inSection:0];
        CollectionViewCell *cell = (CollectionViewCell *)[CollectionView cellForItemAtIndexPath:tempIndexPath];
        NSString *localcaseid = cell.caseid.text;
        NSLog(@"%@",localcaseid);
    }
    else {
    }