按鈕點擊方法在集合視圖中不起作用

Question

我正在創建相機應用程序。我在收藏視圖中顯示拍攝的照片。我放置了一個按鈕來刪除特定的圖片。在運行時，我可以看到要刪除的按鈕，但如果我點擊該按鈕，它不會執行任何操作。

-(UICollectionViewCell *)collectionView:(UICollectionView *) 
collectionView cellForItemAtIndexPath:(NSIndexPath *)indexPath 
{ 
    CollectionViewCell *Cell = [collectionView dequeueReusableCellWithReuseIdentifier:@"Cell" forIndexPath:indexPath]; 

    Cell.self.image_View.image=[self.imageArray objectAtIndex:indexPath.row]; 

    UIButton *deleteButton = [[UIButton alloc]init]; 
    deleteButton.frame = CGRectMake(80, 0, 20, 20); 
    //deleteButton.backgroundColor = [UIColor redColor]; 
    [deleteButton setImage:[UIImage imageNamed:@"delete.png"] forState:UIControlStateNormal]; 
    [deleteButton setTag:indexPath.row]; 

    [deleteButton addTarget:self action:@selector(delete:) forControlEvents:UIControlEventTouchUpInside]; 

    [Cell.self.image_View addSubview:deleteButton]; 

    return Cell; 
} 

-(void) delete:(UIButton*)sender{ 
     UIButton *btn = (UIButton *)sender; 
     [self.imageArray removeObjectAtIndex:btn.tag]; 
     //reload your collectionview here 
} 

任何人都可以幫助我嗎？

Answer 1

我想你可能會丟失

[collectionView reloadData] 


    -(void) delete:(UIButton*)sender{ 
    UIButton *btn = (UIButton *)sender; 
    [self.imageArray removeObjectAtIndex:btn.tag]; 
    [collectionView reloadData] 

}