UICollectionView刪除選定的單元格

Question

我想刪除UICollectionView的選定UICollectionView 。

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

您可以使用數組獲取它們的路徑

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

您不能[[self cardTable] removeObjectsAtIndexes: indexPaths]; 因為您需要一個NSIndexSet 。

有沒有一種方法可以將NSArray *indexPaths轉換為NSIndexSet礦石，我需要做無限遍地膨脹才能得到我想要的東西

我想在NSIndexSet轉換數組

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

Answer 1

解決方案：

- (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]];
    }
}