TableView单元格自动高度

Question

我在UITableViewCell中有一个TextView，我希望我的高度TableViewCell是自动根据TextView高度。

我曾经使用过一些代码，但它只显示在IOS 8上，我希望它可以在IOS 7上运行。

请帮助我！

谢谢大家。

这是我的代码的图像，它在IOS 8上工作非常好。

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

    NSString *messageText = [NSString stringWithFormat:@"%@", [DicMessagesData objectForKey:@"ContentMessage"]];

    CGSize constraint = CGSizeMake(CELL_CONTENT_WIDTH - (CELL_CONTENT_MARGIN * 2), 20000.0f);

    NSMutableParagraphStyle *paragraphStyle = [[NSMutableParagraphStyle alloc] init];
    paragraphStyle.lineBreakMode = NSLineBreakByWordWrapping;

    CGRect textRect = [messageText boundingRectWithSize:constraint options:NSStringDrawingUsesLineFragmentOrigin attributes:@{NSParagraphStyleAttributeName: paragraphStyle.copy} context:nil];

    return textRect.size.height + 30;

}

Answer 1

我找到的最佳方法：

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

  NSString *text = @"your text";
  CGSize maximumLabelSize = CGSizeMake(CELL_CONTENT_WIDTH, 9999);

  UILabel *notesLabel = [[UILabel alloc] init];
  notesLabel.font = [UIFont systemFontOfSize:18];
  notesLabel.text = text;  
  notesLabel.numberOfLines = 0;
  notesLabel.lineBreakMode = NSLineBreakByWordWrapping;
  CGSize expectSize = [notesLabel sizeThatFits:maximumLabelSize];
  return expectSize.height + 40;
}

Answer 2

几个月前，我遇到了同样的问题。谢天谢地，我在Table View Cells With Varying Row Heights找到了一个简单的博客。它会解决你的问题。

Answer 3

试试这个。有用。这将根据内容为每个tableview单元格提供动态高度。

- (CGFloat)heightForText:(NSString *)bodyText
{
    NSAttributedString *attrStr = [[NSAttributedString alloc] initWithString:bodyText];
    CGFloat width = 278;
    CGRect rect = [attrStr boundingRectWithSize:CGSizeMake(width, MAXFLOAT) options:NSStringDrawingUsesLineFragmentOrigin | NSStringDrawingUsesFontLeading context:nil];
    return rect.size.height+10;

}

- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
    lblComment.numberOfLines = 0;
    lblComment.lineBreakMode = NSLineBreakByWordWrapping;
    CGFloat rowHeight = [self heightForText:[[allCommentsArr objectAtIndex:indexPath.row]objectForKey:@"comment"]];
    lblComment.frame = CGRectMake(25, 25, 278, rowHeight);
    NSLog(@"rowHeight=%f", rowHeight);
}

- (CGFloat)tableView:(UITableView *)tableView heightForRowAtIndexPath:(NSIndexPath *)indexPath
{
        CGFloat rowHgt=[self heightForText:[[allCommentsArr objectAtIndex:indexPath.row]objectForKey:@"comment"]];
        NSLog(@"rowHgt=%f", rowHgt);
        return rowHgt+25;
}

Answer 4

您可以使用此代码：

language: java

jdk:
  - oraclejdk7
  - oraclejdk8

after_success:
  - mvn clean cobertura:cobertura coveralls:report javadoc:jar
  - test "${TRAVIS_PULL_REQUEST}" == "false" && test "${TRAVIS_TAG}" != "" && mvn deploy --settings travis-settings.xml

branches:
  only:
    - master
      # Build tags that match this regex in addition to building the master branch.
    - /^my_awesome_project-[0-9]+\.[0-9]+\.[0-9]+/

env:
  global:
    - secure: 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
    - secure: 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