ios - 在 tableview 滚动期间将事件添加到 imageview

Question

我已经实现了带有自定义单元格的表格 View 。单元格上有 ImageView ，我向其添加了手势识别器。但是，当我单击 imageview 以触发某些事件时，它会转到带有数字的方法，因为我已经滚动了表格 View 。假设我滚动了 tableview 5 次，然后 imageview 也触发了该方法 5 次。

这是代码:

{
    if (cell == nil)
    {
        cell = [[[CustomTableViewCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:CellIdentifier] autorelease];
        cell.frame = CGRectMake(0.0, 0.0, 320.0, 200.0);
    }
    cell.accessoryType = UITableViewCellAccessoryNone;
    cell.selectionStyle = UITableViewCellSelectionStyleNone;
    cell.backgroundColor=[UIColor redColor];
    [cell.image1 setTag:indexPath.row*2];
    [cell.image2 setTag:indexPath.row*2+1];

    NSString *pathimage1 =[[aroundmearray objectAtIndex:indexPath.row*2]objectForKey:@"image"];
    NSString *filePath1 = [NSString stringWithFormat:@"%@",pathimage1];
    NSString *pathimage2=[[aroundmearray objectAtIndex:indexPath.row*2+1]objectForKey:@"image"];
    NSString *filePath2 = [NSString stringWithFormat:@"%@",pathimage2];

    UITapGestureRecognizer *tap1 =
    [[UITapGestureRecognizer alloc] initWithTarget:self action:@selector(handlefirstTap:)];
    tap1.delegate=self;
    tap1.numberOfTapsRequired=1;
    [cell.image1 addGestureRecognizer:tap1];
    [tap1 release];
    UITapGestureRecognizer *tap2 =
    [[UITapGestureRecognizer alloc] initWithTarget:self action:@selector(handlesecondTap:)];
    tap2.delegate=self;
    tap2.numberOfTapsRequired=1;
    [cell.image2 addGestureRecognizer:tap2];
    [tap2 release];
    [cell.image1 setImageWithURL:[NSURL URLWithString:filePath1]placeholderImage:[UIImage imageNamed:@"placeholder.png"]];
    [cell.image2 setImageWithURL:[NSURL URLWithString:filePath2]placeholderImage:[UIImage imageNamed:@"placeholder.png"]];

}
return cell;

Answer 1

这是因为您在 cell == nil 条件的外部添加了手势识别器。TableView 将在每次滚动时调用 cellForRowAtIndexPath: 委托(delegate)方法。因此，您可以通过在 cell == nil 条件中添加手势识别器来避免这种情况。