如何设置UICollectionViewCell大小

Question

我已经使用UICollectionView并在单元格中设置图像。我想要的单元格大小是width = view/2和hight = view/3。和顶部margin =8,right = 8,left = 8。我附上一张图片请参阅。我想喜欢这个，请看一张图片。

MY CODE

- (NSInteger)collectionView:(UICollectionView *)collectionView numberOfItemsInSection:(NSInteger)section { 
return img_ary.count; 
} 


- (UICollectionViewCell *)collectionView:(UICollectionView *)collectionView cellForItemAtIndexPath:(NSIndexPath *)indexPath{ 
static NSString *identifier = @"Cell"; 


category_cell *cell = [collectionView dequeueReusableCellWithReuseIdentifier:identifier forIndexPath:indexPath]; 
cell.img_view.image = [UIImage imageNamed:[img_ary objectAtIndex:indexPath.row]]; 


return cell; 
} 

- (void)collectionView:(UICollectionView *)collectionView didSelectItemAtIndexPath:(NSIndexPath *)indexPath { 
// [self performSegueWithIdentifier:@"showRecipeDetails" sender:self]; 


} 

- (UIEdgeInsets)collectionView:(UICollectionView *)collectionView layout:(UICollectionViewLayout*)collectionViewLayout insetForSectionAtIndex:(NSInteger)section{ 
return UIEdgeInsetsMake(0, 0, 0, 0); //top, left, bottom, right); 

} 

-(CGSize)collectionView:(UICollectionView *)collectionView layout:(UICollectionViewLayout *)collectionViewLayout sizeForItemAtIndexPath:(NSIndexPath *)indexPath{ 
CGFloat widthOfCell =(self.view.frame.size.width-30)/2; 
CGFloat heightOfCell =(self.view.frame.size.height-30)/4; 
CGSize returnValue = CGSizeMake(widthOfCell, heightOfCell); 
returnValue.height += 5; 
returnValue.width += 5; 
return returnValue; 

} 

IMAGE: I want to likes this please see

我试图多次，有更多的方法用于但不设置像附加图像细胞。请建议我如何做到这一点。三江源

Answer 1

你试过

- (CGSize)collectionView:(UICollectionView *)collectionView layout:(UICollectionViewLayout *)collectionViewLayout sizeForItemAtIndexPath:(NSIndexPath *)indexPath;{ 

    CGSize defaultSize = CGSizeMake((_collectionViewSongs.frame.size.width/2)-10, (_collectionViewSongs.frame.size.width/2)-10); 


    return defaultSize; 
} 

Answer 2

给予左，右，上，下0到您的收藏视图

使用下面集合视图的方法

- (CGSize)collectionView:(UICollectionView *)collectionView layout:(UICollectionViewLayout*)collectionViewLayout sizeForItemAtIndexPath:(NSIndexPath *)indexPath{ 
int width = (collectionView.frame.size.width/2)-8; 
int height = (collectionView.frame.size.height/3)-8; 
return CGSizeMake(width, height);}