如何调整UITableViewCell的大小以适合其内容? [英] How to resize UITableViewCell to fit its content?

问题描述

我有一个UITableview，其中包含多个可重复使用的TableViewCells. 在一个单元格中，我有一个UITextView，它会自行调整大小以适合其内容.现在，我只是"必须调整TableViewCell的contentView大小，以便可以读取while文本.我已经尝试过:

I have a UITableview with multiple reusable TableViewCells. In one cell I have a UITextView, that resizes itself to fit its content. Now I "just" have to resize the contentView of the TableViewCell, so I can read the while text. I already tried:

cell2.contentView.bounds.size.height = cell2.discriptionTextView.bounds.size.height; 

或者:

cell2.contentView.frame = CGRectMake(0, cell2.discriptionTextView.bounds.origin.y,     
cell2.discriptionTextView.bounds.size.width,     
cell2.discriptionTextView.bounds.size.height); 

在方法中:

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

但是它不起作用.

有人知道该怎么做吗?

新代码:

    @implementation AppDetail

    CGFloat height;
    …

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

    cell2.TextView.text = self.text;
            [cell2.TextView sizeToFit];
            height = CGRectGetHeight(cell2.TextView.bounds);
     …
    }

    - (CGFloat)tableView:(UITableView *)tableView heightForRowAtIndexPath:(NSIndexPath *)indexPath {

        if (indexPath.row == 0) {
            return 143;
        }
        if (indexPath.row == 1) {
            return height;
        }

        return 0;
    }

推荐答案

您需要实现heightForRowAtIndexPath.

假设要在textView中显示的数据存储在NSArray中.

Say that the data that is to be displayed in the textView is stored in a NSArray.

- (CGFloat)tableView:(UITableView *)tableView heightForRowAtIndexPath:(NSIndexPath *)indexPath {
 CGFloat cellheight = 30; //assuming that your TextView's origin.y is 30 and TextView is the last UI element in your cell

 NSString *text = (NSString *)[textArray objectAtIndex:indexpath.row];
 UIFont *font = [UIFont systemFontOfSize:14];// The font should be the same as that of your textView
 CGSize constraintSize = CGSizeMake(maxWidth, CGFLOAT_MAX);// maxWidth = max width for the textView

 CGSize size = [text sizeWithFont:font constrainedToSize:constraintSize lineBreakMode:UILineBreakModeWordWrap];

 cellHeight += size.height; //you can also add a cell padding if you want some space below textView

}

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