UICollectionView删除选定的单元格

Question

我想删除UICollectionView的选定UICollectionView 。

@property (weak, nonatomic) IBOutlet UICollectionView *cardTable;
@property (strong, nonatomic) NSMutableArray *cardTableArry; // of Card and datamodel

您可以使用数组获取它们的路径

NSArray *indexPaths = [[self cardTable] indexPathsForSelectedItems];

您不能[[self cardTable] removeObjectsAtIndexes: indexPaths]; 因为您需要一个NSIndexSet 。

有没有一种方法可以将NSArray *indexPaths转换为NSIndexSet矿石，我需要做无限遍地膨胀才能得到我想要的东西

我想在NSIndexSet转换数组

[[self cardTableArry] deleteItemsAtIndexPaths: [[self cardTable] indexPathsForSelectedItems]]; 

Answer 1

解决方案：

- (void) removeCardsFromTable: (NSArray *) indexPaths {
    NSMutableArray *cards = [[NSMutableArray alloc] init];
    for (NSInteger selectedLoop = 0; selectedLoop < 3; selectedLoop++) {
        NSIndexPath *card = [indexPaths objectAtIndex: selectedLoop];
        [cards addObject: [[self cardTable] objectAtIndex: [card item]]];
    }
    for (NSInteger selectedLoop = 0; selectedLoop < 3; selectedLoop++) {
        [[self cardTable] removeObject: [cards objectAtIndex: selectedLoop]];
    }
}