ios - UITableViewCellDeleteConfirmationControl 问题

Question

我在项目中使用以下代码:

if([NSStringFromClass([subview class])  isEqualToString:@"UITableViewCellDeleteConfirmationControl"])

这在 iOS 5 和 6 上运行良好。但在 iOS 7 上它总是返回 NO。

谁能告诉我这是 iOS 7 的问题还是我做错了什么？

谢谢!

Answer 1

这是我供人们构建的骇人听闻的未完成实现。

这应该适用于 iOS6-- 和 iOS7。

显然，此代码位于您的子类 UITableViewCell 中。

-(void)willTransitionToState:(UITableViewCellStateMask)state{
    NSLog(@"EventTableCell willTransitionToState");
    [super willTransitionToState:state];
    if((state & UITableViewCellStateShowingDeleteConfirmationMask) == UITableViewCellStateShowingDeleteConfirmationMask){
        [self recurseAndReplaceSubViewIfDeleteConfirmationControl:self.subviews];
        [self performSelector:@selector(recurseAndReplaceSubViewIfDeleteConfirmationControl:) withObject:self.subviews afterDelay:0];
    }
}
-(void)recurseAndReplaceSubViewIfDeleteConfirmationControl:(NSArray*)subviews{
    NSString *delete_button_name = @"button_panorama_no_arrow";
    for (UIView *subview in subviews)
    {
        //handles ios6 and earlier
        if ([NSStringFromClass([subview class]) isEqualToString:@"UITableViewCellDeleteConfirmationControl"])
        {
            //we'll add a view to cover the default control as the image used has a transparent BG
            UIView *backgroundCoverDefaultControl = [[UIView alloc] initWithFrame:CGRectMake(0,0, 64, 33)];
            [backgroundCoverDefaultControl setBackgroundColor:[UIColor whiteColor]];//assuming your view has a white BG
               [[subview.subviews objectAtIndex:0] addSubview:backgroundCoverDefaultControl];
            UIImage *deleteImage = [UIImage imageNamed:delete_button_name];
            UIImageView *deleteBtn = [[UIImageView alloc]initWithFrame:CGRectMake(0, 0,deleteImage.size.width, deleteImage.size.height)];
            [deleteBtn setImage:[UIImage imageNamed:delete_button_name]];
            [[subview.subviews objectAtIndex:0] addSubview:deleteBtn];
        }
        //the rest handles ios7
        if ([NSStringFromClass([subview class]) isEqualToString:@"UITableViewCellDeleteConfirmationButton"])
        {
            UIButton *deleteButton = (UIButton *)subview;
            [deleteButton setImage:[UIImage imageNamed:delete_button_name] forState:UIControlStateNormal];
            [deleteButton setTitle:@"" forState:UIControlStateNormal];
            [deleteButton setBackgroundColor:[UIColor clearColor]];
            for(UIView* view in subview.subviews){
                if([view isKindOfClass:[UILabel class]]){
                    [view removeFromSuperview];
                }
            }
        }
        if ([NSStringFromClass([subview class]) isEqualToString:@"UITableViewCellDeleteConfirmationView"])
        {
            for(UIView* innerSubView in subview.subviews){
                if(![innerSubView isKindOfClass:[UIButton class]]){
                    [innerSubView removeFromSuperview];
                }
            }
        }
        if([subview.subviews count]>0){
             [self recurseAndReplaceSubViewIfDeleteConfirmationControl:subview.subviews];
        }

    }
}

我希望这对某人有帮助。