Question

guys. I have UITableView with different cells and I have code, which counts height. In one project it works perfect, but in second it returns height equals 0. What could be causing this? My code:

- (CGFloat)tableView:(UITableView *)tableView heightForRowAtIndexPath:(NSIndexPath *)indexPath {
    UITableViewCell *cell = [self tableView:tableView cellForRowAtIndexPath:indexPath];
    CGFloat cellWidth = 320.0f;
    CGSize size = [cell.textLabel.text sizeWithFont:cell.textLabel.font constrainedToSize:CGSizeMake(cellWidth, CGFLOAT_MAX) lineBreakMode:cell.textLabel.lineBreakMode];
    CGFloat height = size.height;
    NSLog(@"Height: %f", height);
    return height;
}

Answer 1

The heightForRowAtIndexPath: delegate method gets called before the cellForRowAtIndexPath: delegate method. In your code you are calculating your cell height based on cell.textLabel.text, but the text in the cell has not been set yet.

你们需要从除桌子以外的其他地方把案文用在这种方法中(假定你可以在你确定案文时从哪里拿到。) 文本价值载于“ForRowAtIndexPath”。

友情链接