使用uilabel重新自调整高度后显示横线和竖线问题

这个使用uilabel自调节高度发现的问题，代码如下：

 

 //content label
            
            NSString *contentValue = ((MessageDetailRecord *)[self.entriesArray objectAtIndex:indexPath.row]).content;
            CGFloat width = 0.0f;
            CGSize orignalSize;
            
#pragma clang diagnostic push
#pragma clang diagnostic ignored "-Wdeprecated-declarations"
            if ([GeneralInfo getDeviceSystemVer]){
                
                orignalSize = [contentValue sizeWithAttributes:@{NSFontAttributeName:[UIFont systemFontOfSize:20.0f]}];
                width = orignalSize.width;
                
            }else{
                width =  [contentValue sizeWithFont:[UIFont systemFontOfSize:20.0f ]].width;
                
            }
#pragma clang diagnostic pop
            
            //set the most large width
            if (width > cell.frame.size.width - 90.0f) {
                
                width = cell.frame.size.width - 90.0f;
            }

UILabel *content = [[UILabel alloc]initWithFrame:CGRectMake(0.0f, 0.0f, width, 0.0f)];
            self.messageContentLabel = content;
            self.messageContentLabel.font = [UIFont systemFontOfSize:20.0];
            self.messageContentLabel.backgroundColor = [UIColor clearColor];
            self.messageContentLabel.numberOfLines = 0;
            self.messageContentLabel.adjustsFontSizeToFitWidth = YES;
            self.messageContentLabel.lineBreakMode = NSLineBreakByWordWrapping;
            self.messageContentLabel.backgroundColor = [UIColor colorWithRed:241/255.0f green:241/255.0f blue:241/255.0f alpha:1.0];
            CGRect labelFrameContent = self.messageContentLabel.frame;
#pragma clang diagnostic push
#pragma clang diagnostic ignored "-Wdeprecated-declarations"
            
            if ([GeneralInfo getDeviceSystemVer]) {
                NSDictionary *stringAttributes = [NSDictionary dictionaryWithObject:self.messageContentLabel.font forKey: NSFontAttributeName];
                
                labelFrameContent.size = [contentValue boundingRectWithSize:CGSizeMake(width, CGFLOAT_MAX)
                                                                    options:NSStringDrawingTruncatesLastVisibleLine|NSStringDrawingUsesLineFragmentOrigin
                                                                 attributes:stringAttributes context:nil].size;
            }else{
                
                labelFrameContent.size = [contentValue sizeWithFont:self.messageContentLabel.font
                                                  constrainedToSize:CGSizeMake(width, CGFLOAT_MAX)
                                                      lineBreakMode:self.messageContentLabel.lineBreakMode];
            }
#pragma clang diagnostic pop
            
            //adjust the height
            if (labelFrameContent.size.height < 50.0f) {
                
                labelFrameContent.size.height = 50.0f;
            }
            
            labelFrameContent.size.width += 10.0f;
            if (labelFrameContent.size.width > cell.frame.size.width - 90.0f) {
                
                labelFrameContent.size.width = cell.frame.size.width - 90.0f;
            }
            
            labelFrameContent.origin.x = 70.0f;
            labelFrameContent.origin.y = self.cellDateLabel.frame.size.height + 10.0f;
            self.messageContentLabel.frame = labelFrameContent;
            [cell.contentView addSubview:self.messageContentLabel];

解决方法是使用uitextview来替换即可

UITextView *content = [[UITextView alloc]initWithFrame:CGRectMake(0.0f, 0.0f, width, 0.0f)];
                    self.messageContentLabel = content;
                    [content release];
                    self.messageContentLabel.font = [UIFont systemFontOfSize:16.0f];
                    self.messageContentLabel.backgroundColor = [UIColor clearColor];
                    self.messageContentLabel.scrollEnabled = NO;
                    self.messageContentLabel.userInteractionEnabled = NO;
                    //self.messageContentLabel.numberOfLines = 0;
                    //self.messageContentLabel.adjustsFontSizeToFitWidth = YES;
                    // self.messageContentLabel.lineBreakMode = NSLineBreakByWordWrapping;
                    self.messageContentLabel.backgroundColor = [UIColor colorWithRed:241/255.0f green:241/255.0f blue:241/255.0f alpha:1.0];
                    self.messageContentLabel.text = contentValue;
                    self.messageContentLabel.textColor = [UIColor grayColor];
                    CGRect labelFrameContent = self.messageContentLabel.frame;
                    
#pragma clang diagnostic ignored "-Wdeprecated-declarations"
                    
                    if ([GeneralInfo getDeviceSystemVer])
                    {
                        labelFrameContent.size = [contentValue boundingRectWithSize:CGSizeMake(width, CGFLOAT_MAX)
                                                                            options:(NSStringDrawingUsesLineFragmentOrigin | NSStringDrawingUsesFontLeading)
                                                                         attributes:@{NSFontAttributeName:[UIFont systemFontOfSize:17.0f]}
                                                                            context:nil].size;
                    }
                    else
                    {
                        labelFrameContent.size = [contentValue sizeWithFont:self.messageContentLabel.font constrainedToSize:CGSizeMake(width, CGFLOAT_MAX)];
                    }
#pragma clang diagnostic pop

 

 注意：这个在ios 7.0以前的版本如果使用uitextview的话布局会有问题，如果使用uilabel的话在ios7.0上又会出现横竖线。所以最终的解决方案是区分当前的版本对待。

- (UITableViewCell *) tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
    //delete the unnessary separator line
    
    static NSString *CellIndentifier = @"MessageDetailList";
    UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:CellIndentifier];
    CGRect cellFrame =[cell frame];
    
    if (cell == nil) {
        cell = [[[UITableViewCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:CellIndentifier] autorelease];
        cell.accessoryType = UITableViewCellAccessoryNone;
        cell.selectionStyle = UITableViewCellSelectionStyleNone;
    }
    
    if (self.entriesArray &&
        [self.entriesArray count] > 0) {
        
        while ([cell.contentView.subviews lastObject] != nil)
        {
            [(UIView*)[cell.contentView.subviews lastObject] removeFromSuperview];
        }
        UILabel *dateLabel = [[UILabel alloc]initWithFrame:CGRectMake(cell.frame.size.width/4, 5.0f, cell.frame.size.width/2, 0.0f)];
        self.cellDateLabel = dateLabel;
        [dateLabel release];
        self.cellDateLabel.text = ((MessageDetailRecord *)[self.entriesArray objectAtIndex:indexPath.row]).date;
        self.cellDateLabel.textAlignment = NSTextAlignmentCenter;
        self.cellDateLabel.font = [UIFont systemFontOfSize:14.0];
        self.cellDateLabel.textColor = [UIColor grayColor];
        self.cellDateLabel.backgroundColor = [UIColor clearColor];
        self.cellDateLabel.numberOfLines = 0;
        self.cellDateLabel.lineBreakMode = NSLineBreakByWordWrapping;
        CGRect labelFrameN = self.cellDateLabel.frame;
#pragma clang diagnostic push
#pragma clang diagnostic ignored "-Wdeprecated-declarations"
        
        if ([GeneralInfo getDeviceSystemVer]) {
            NSDictionary *stringAttributes = [NSDictionary dictionaryWithObject:self.cellDateLabel.font forKey: NSFontAttributeName];
            
            labelFrameN.size = [self.cellDateLabel.text boundingRectWithSize:CGSizeMake(self.cellDateLabel.frame.size.width, CGFLOAT_MAX)
                                                                     options:NSStringDrawingTruncatesLastVisibleLine|NSStringDrawingUsesLineFragmentOrigin
                                                                  attributes:stringAttributes context:nil].size;
        }else{
            
            labelFrameN.size = [self.cellDateLabel.text sizeWithFont:self.cellDateLabel.font
                                                   constrainedToSize:CGSizeMake(self.cellDateLabel.frame.size.width, CGFLOAT_MAX)
                                                       lineBreakMode:self.cellDateLabel.lineBreakMode];
        }
#pragma clang diagnostic pop
        
        self.cellDateLabel.frame = labelFrameN;
        [cell.contentView addSubview:self.cellDateLabel];
        
        UIImageView *icon = [[UIImageView alloc]initWithFrame:CGRectMake(10.0f, self.cellDateLabel.frame.size.height + 10.0f,50.0f, 50.0f)];
        
        self.imageView = icon;
        self.imageView.image = [UIImage imageNamed:@"[email protected]"];
        self.imageView.backgroundColor = [UIColor clearColor];
        if (self.headImagesArray) {
            
            [self.headImagesArray insertObject:self.imageView atIndex:indexPath.row];
        }
        
        [cell.contentView addSubview:[self.headImagesArray  objectAtIndex:indexPath.row]];
        [icon release];
        
        
        //the content bg image
        UIImageView *bgimageView = [[UIImageView alloc]initWithFrame:CGRectMake(65.0f, self.cellDateLabel.frame.size.height + 10.0f,cell.frame.size.width/3*2, 50.0f)];
        
        self.messageContentbgImageView = bgimageView;
        self.messageContentbgImageView.image = [UIImage imageNamed:@"[email protected]"];
        self.messageContentbgImageView.backgroundColor = [UIColor clearColor];
        
        [cell.contentView addSubview:self.messageContentbgImageView];
        [bgimageView release];
        
        
        //content label
        
        NSString *contentValue = ((MessageDetailRecord *)[self.entriesArray objectAtIndex:indexPath.row]).content;
        CGFloat width = 0.0f;
        CGSize orignalSize;
        
#pragma clang diagnostic push
#pragma clang diagnostic ignored "-Wdeprecated-declarations"
        if ([GeneralInfo getDeviceSystemVer]){
            
            orignalSize = [contentValue sizeWithAttributes:@{NSFontAttributeName:[UIFont systemFontOfSize:20.0f]}];
            width = orignalSize.width;
            
        }else{
            width =  [contentValue sizeWithFont:[UIFont systemFontOfSize:20.0f ]].width;
            
        }
#pragma clang diagnostic pop
        
        //set the most large width
        if (width > cell.frame.size.width - 90.0f) {
            
            width = cell.frame.size.width - 90.0f;
        }
        
        CGRect labelFrameContent;
        if ([GeneralInfo getDeviceSystemVer]) {
            UITextView *content = [[UITextView alloc]initWithFrame:CGRectMake(0.0f, 0.0f, width, 0.0f)];
            self.messageContentLabel = content;
            [content release];
            self.messageContentLabel.font = [UIFont systemFontOfSize:16.0f];
            self.messageContentLabel.backgroundColor = [UIColor clearColor];
            self.messageContentLabel.scrollEnabled = NO;
            self.messageContentLabel.userInteractionEnabled = NO;
            self.messageContentLabel.backgroundColor = [UIColor colorWithRed:241/255.0f green:241/255.0f blue:241/255.0f alpha:1.0];
            self.messageContentLabel.text = contentValue;
            self.messageContentLabel.textColor = [UIColor grayColor];
            labelFrameContent = self.messageContentLabel.frame;
            
        }
        else
        {
            UILabel *content = [[UILabel alloc]initWithFrame:CGRectMake(0.0f, 0.0f, width, 0.0f)];
            self.messageContent = content;
            [content release];
            self.messageContent.font = [UIFont systemFontOfSize:20.0];
            self.messageContent.backgroundColor = [UIColor clearColor];
            self.messageContent.numberOfLines = 0;
            self.messageContent.adjustsFontSizeToFitWidth = YES;
            self.messageContent.lineBreakMode = NSLineBreakByWordWrapping;
            self.messageContent.backgroundColor = [UIColor colorWithRed:241/255.0f green:241/255.0f blue:241/255.0f alpha:1.0];
            labelFrameContent = self.messageContent.frame;
            
            
        }
        
#pragma clang diagnostic ignored "-Wdeprecated-declarations"
        
        if ([GeneralInfo getDeviceSystemVer])
        {
            labelFrameContent.size = [contentValue boundingRectWithSize:CGSizeMake(width, CGFLOAT_MAX)
                                                                options:(NSStringDrawingUsesLineFragmentOrigin | NSStringDrawingUsesFontLeading)
                                                             attributes:@{NSFontAttributeName:[UIFont systemFontOfSize:17.0f]}
                                                                context:nil].size;
        }
        else
        {
            //            labelFrameContent.size = [contentValue sizeWithFont:self.messageContentLabel.font constrainedToSize:CGSizeMake(width, CGFLOAT_MAX)];
            labelFrameContent.size = [contentValue sizeWithFont:self.messageContent.font
                                              constrainedToSize:CGSizeMake(width, CGFLOAT_MAX)
                                                  lineBreakMode:self.messageContent.lineBreakMode];
        }
#pragma clang diagnostic pop
        
        /*#pragma clang diagnostic push
         #pragma clang diagnostic ignored "-Wdeprecated-declarations"
         
         if ([GeneralInfo getDeviceSystemVer]) {
         NSDictionary *stringAttributes = [NSDictionary dictionaryWithObject:self.messageContentLabel.font forKey: NSFontAttributeName];
         
         labelFrameContent.size = [contentValue boundingRectWithSize:CGSizeMake(width, CGFLOAT_MAX)
         options:NSStringDrawingTruncatesLastVisibleLine|NSStringDrawingUsesLineFragmentOrigin
         attributes:stringAttributes context:nil].size;
         }else{
         
         labelFrameContent.size = [contentValue sizeWithFont:self.messageContentLabel.font
         constrainedToSize:CGSizeMake(width, CGFLOAT_MAX)
         lineBreakMode:self.messageContentLabel.lineBreakMode];
         }
         #pragma clang diagnostic pop*/
        
        //adjust the height
        if (labelFrameContent.size.height < 50.0f) {
            
            labelFrameContent.size.height = 50.0f;
        }
        
        labelFrameContent.size.width += 10.0f;
        if (labelFrameContent.size.width > cell.frame.size.width - 90.0f) {
            
            labelFrameContent.size.width = cell.frame.size.width - 90.0f;
        }
        
        labelFrameContent.origin.x = 70.0f;
        labelFrameContent.origin.y = self.cellDateLabel.frame.size.height + 10.0f;
        if ([GeneralInfo getDeviceSystemVer]){
            self.messageContentLabel.frame = labelFrameContent;
            [cell.contentView addSubview:self.messageContentLabel];
            
        }else
        {
            self.messageContent.frame = labelFrameContent;
            [cell.contentView addSubview:self.messageContent];
            
            
        }
        
        if (![GeneralInfo getDeviceSystemVer]){
        UILabel *innerlabel = [[UILabel alloc]initWithFrame:CGRectMake(5.0f, 0.0f, self.messageContent.frame.size.width - 10.0f, self.messageContent.frame.size.height)];
        innerlabel.textAlignment = NSTextAlignmentLeft;
        innerlabel.font = [UIFont systemFontOfSize:16.0];
        innerlabel.textColor = [UIColor grayColor];
        innerlabel.backgroundColor = [UIColor clearColor];
        innerlabel.text = contentValue;
        innerlabel.numberOfLines = 0;
        innerlabel.adjustsFontSizeToFitWidth = YES;
        innerlabel.lineBreakMode = NSLineBreakByWordWrapping;
        innerlabel.backgroundColor = [UIColor colorWithRed:241/255.0f green:241/255.0f blue:241/255.0f alpha:1.0];
        self.innerLabel = innerlabel;
        [self.messageContent addSubview:innerlabel];
        [innerlabel release];
        }
        
        //then the image should first check the type
        NSString *type = ((MessageDetailRecord *)[self.entriesArray objectAtIndex:indexPath.row]).currentMessageType;
        if ([type isEqualToString:@"self"])
        {
            //then readjust the frame
            ((UIImageView *)[self.headImagesArray  objectAtIndex:indexPath.row]).frame = CGRectMake(cell.frame.size.width - 50.0f, self.cellDateLabel.frame.size.height + 10.0f, 40.0f, 40.0f);
            
            self.imageView.frame = CGRectMake(cell.frame.size.width - 60.0f, self.cellDateLabel.frame.size.height + 10.0f, 50.0f, 50.0f);
            
            self.messageContentbgImageView.image = [UIImage imageNamed:@"[email protected]"];
            
            self.messageContentbgImageView.frame = CGRectMake(cell.frame.size.width - 65.0f - cell.frame.size.width/3*2, self.cellDateLabel.frame.size.height + 10.0f, cell.frame.size.width/3*2, 50.0f);
            
            if ([GeneralInfo getDeviceSystemVer]){
                self.messageContentLabel.backgroundColor = [UIColor colorWithRed:236/255.0f green:247/255.0f blue:253/255.0f alpha:1.0];
                
                self.messageContentLabel.frame = CGRectMake(cell.frame.size.width - labelFrameContent.size.width - 70.0f, self.cellDateLabel.frame.size.height + 10.0f, labelFrameContent.size.width, labelFrameContent.size.height);
            }else
            {
                self.messageContent.backgroundColor = [UIColor colorWithRed:236/255.0f green:247/255.0f blue:253/255.0f alpha:1.0];
                
                self.messageContent.frame = CGRectMake(cell.frame.size.width - labelFrameContent.size.width - 70.0f, self.cellDateLabel.frame.size.height + 10.0f, labelFrameContent.size.width, labelFrameContent.size.height);
                self.innerLabel.backgroundColor = [UIColor colorWithRed:236/255.0f green:247/255.0f blue:253/255.0f alpha:1.0];
            }
            
            
        }
        
        if ([GeneralInfo getDeviceSystemVer]){
            cellFrame.size.height = self.cellDateLabel.frame.size.height + self.messageContentLabel.frame.size.height + 20.0f;
        }else
        {
            cellFrame.size.height = self.cellDateLabel.frame.size.height + self.messageContent.frame.size.height + 20.0f;
            
        }
        [cell setFrame:cellFrame];
        
        self.record = [self.entriesArray objectAtIndex:indexPath.row];
        if(!self.record.appIcon) {
            
            if (self.localTableView.dragging == NO && self.localTableView.decelerating == NO)
            {
                //if has the valid image url then should add to the downloader list
                NSString *startURL = self.record.friendHeadImageUrl;
                NSLog(@"the starturl is %@",startURL);
                if (startURL &&
                    (NSNull *)startURL != [NSNull null] &&
                    [startURL length] > 0) {
                    NSString *endURL = [NSURL URLWithString:startURL];
                    if (endURL) {
                        
                        [self startIconDownload:self.record forIndexPath:indexPath];
                        
                    }
                }
                
            }
        }else{
            
            //should add the new bg image
            ((UIImageView *)[self.headImagesArray objectAtIndex:indexPath.row]).image = [UIImage imageNamed:@"friend_head_image_bg"];
            UIImageView *tmp = [[UIImageView alloc]initWithFrame:CGRectMake(5.0f, 5.0f, 40.0f, 40.0f)];
            tmp.image = self.record.appIcon;
            [tmp setContentMode:UIViewContentModeScaleAspectFit];
            [((UIImageView *)[self.headImagesArray objectAtIndex:indexPath.row]) addSubview:tmp];
            [tmp release];
            
        }
        
    }
    return cell;
    
}