Cocoa-Touch - UITableView setEditing不会显示特定的单元格

时间:2012-01-30 01:20:51

标签: objective-c cocoa-touch uitableview edit

我已经在这个问题上苦苦挣扎了2个小时了,我无法让它发挥作用。

我有一个带有表视图的视图控制器,其中包含一个项目列表。当用户触摸导航栏中的“编辑”按钮时,表格视图应进入“编辑模式”,并且项目列表一个新单元格应该出现,只有在处于“编辑模式”时才可见”。

因此,在我的-tableView:cellForRowAtIndexPath:方法中,我正在检查if (tableView.isEditing)以设置单元格。我尝试覆盖-setEditing:animated:并进行[tableView reloadData]来电,但我无法让它发挥作用。

这就是我-setEditing:animated:的样子:

- (void)setEditing:(BOOL)editing animated:(BOOL)animated {
    [super setEditing:editing animated:animated];
    [self.groupDetailsTableView setEditing:editing animated:animated];
}

我的-tableView:cellForRowAtIndexPath:

- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath {


    NSUInteger row = [indexPath row];


    if (tableView.isEditing) {

            // Other tableview code has been omitted

            UITableViewCell *cell = [[UITableViewCell alloc] initWithStyle:UITableViewCellStyleDefault 
                                                           reuseIdentifier:nil];

            // Set the background view of the cell to be transparent        
            UIView *backView = [[UIView alloc] initWithFrame:CGRectZero];
            backView.backgroundColor = [UIColor clearColor];
            cell.backgroundView = backView;

            UIButton *deleteButton = [UIButton buttonWithType:UIButtonTypeCustom];
            [deleteButton setFrame:[cell.contentView frame]];
            [deleteButton setFrame:CGRectMake(0, 0, cell.bounds.size.width-20, 44)];
            [deleteButton setBackgroundImage:[UIImage imageNamed:@"redbutton.png"] forState:UIControlStateNormal];
            [deleteButton setTitle:@"Delete Group" forState:UIControlStateNormal];
            [deleteButton.titleLabel setFont:[UIFont boldSystemFontOfSize:20]];
            [deleteButton.titleLabel setShadowColor:[UIColor lightGrayColor]];
            [deleteButton.titleLabel setShadowOffset:CGSizeMake(0, -1)];
            [deleteButton addTarget:self action:@selector(deleteGroup) forControlEvents:UIControlEventTouchUpInside];

            [cell.contentView addSubview:deleteButton];

            return cell;

        }
}

当用户触摸“编辑”按钮时,我正在从方法中调用[self setEditing:YES animated:YES];。我也尝试过调用[super setEditing:YES animated:YES];[self.groupDetailsTableView setEditing:YES animated:YES];

1 个答案:

答案 0 :(得分:0)

我自己在http://developer.apple.com/library/ios/#documentation/UserExperience/Conceptual/TableView_iPhone/ManageInsertDeleteRow/ManageInsertDeleteRow.html#//apple_ref/doc/uid/TP40007451-CH10-SW19

找到答案

显然-tableView:cellForRowAtIndexPath:在调用-setEditing:animated:

时无法自动调用

所以要显示一个新单元格我将alpha设置为0.0,然后在调用setEditing后将其设置为1.0 ...