#define JianGe 25

#define GeShu 4

#define ScreenWidth ([UIScreen mainScreen].bounds.size.width)

#define Screenheight ([UIScreen mainScreen].bounds.size.height)

//定義每個UICollectionView 的大小

- ( CGSize )collectionView:( UICollectionView *)collectionView layout:( UICollectionViewLayout *)collectionViewLayout sizeForItemAtIndexPath:(

returnCGSizeMake((ScreenWidth - JianGe*(GeShu+1)) / GeShu, (ScreenWidth - JianGe*(GeShu+1)) / GeShu );

}

//定義每個UICollectionView 的邊距

- ( UIEdgeInsets )collectionView:( UICollectionView *)collectionView layout:( UICollectionViewLayout *)collectionViewLayout insetForSectionAtIndex:(

returnUIEdgeInsetsMake ( JianGe , JianGe , JianGe , JianGe );

}

//設定水平間距 (同一行的cell的左右間距）

-(CGFloat)collectionView:(UICollectionView *)collectionView layout:(UICollectionViewLayout *)collectionViewLayout minimumInteritemSpacingForSectionAtIndex:(NSInteger)section {

returnJianGe

}

//垂直間距 (同一列cell上下間距)

- (CGFloat)collectionView:(UICollectionView *)collectionView layout:(UICollectionViewLayout*)collectionViewLayout minimumLineSpacingForSectionAtIndex:(NSInteger)section {

returnJianGe;

}