iOS DynamicHeights

eightForRowAtIndexPath那个实现方法确实不太好，会dequeue掉一个可以reuse的cell导致经常都要新创建cell

动态调整UITableViewCell高度的实现方法

iOS-动态调整UITableViewCell的高度

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

    NSString *content = [examData objectAtIndex:indexPath.row];
    
    UIFont *font = [UIFont systemFontOfSize:17.0]; 
    CGSize size  = [content sizeWithFont:font constrainedToSize:CGSizeMake(self.view.bounds.size.width -40 , MAXFLOAT) lineBreakMode:UILineBreakModeWordWrap]; 
    
    NSLog(@"heightForRowAtIndexPath");
    return size.height + 16;
   
} 

  
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
    static NSString *CellIdentifier = @"CellExam";
    
    UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:CellIdentifier];
    if (cell == nil) {
        cell = [[UITableViewCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:CellIdentifier];
    }
    
    // Configure the cell...
//    cell.textLabel.text = [examData objectAtIndex:indexPath.row];
//    cell.textLabel.numberOfLines = 0;
//    cell.textLabel.lineBreakMode = UILineBreakModeWordWrap;
//    cell.textLabel.font = [UIFont systemFontOfSize:16];
    
    
    UILabel *cellLabel = (UILabel *) [cell viewWithTag:2] ;
   
    
    //設置自動行數與字符換行
    cellLabel.lineBreakMode = UILineBreakModeWordWrap;
    cellLabel.numberOfLines = 0;
    [cellLabel setFont:[UIFont systemFontOfSize:FONT_SIZE]];
    
     NSLog(@"cellForRowAtIndexPath");
    //[cellLabel setFrame:CGRectMake(0, 0, cell.frame.size.width, cell.frame.size.height)];
  
    
    NSString *text = [examData objectAtIndex:indexPath.row];
    
    CGSize constraint = CGSizeMake(CELL_CONTENT_WIDTH - (CELL_CONTENT_MARGIN * 2), 20000.0f);
    
    CGSize size = [text sizeWithFont:[UIFont systemFontOfSize:FONT_SIZE] constrainedToSize:constraint lineBreakMode:UILineBreakModeWordWrap];
    
    [cellLabel setText:text];
    
    [cellLabel setFrame:CGRectMake(CELL_CONTENT_MARGIN, CELL_CONTENT_MARGIN, CELL_CONTENT_WIDTH - (CELL_CONTENT_MARGIN * 2), MAX(size.height, 44.0f))];
    

        
    return cell;
}

iPhone实战：动态改变UITableView中的Cell高度

纇似AppStore小護士程式

 

UILabel自适应高度和自动换行 

UILabel(UITableViewCell的動態高度)

 

 

UILabel显示换行的方法   

 

 

    //fix label height
    
    labelPinyinQ.lineBreakMode = UILineBreakModeWordWrap;
    labelPinyinQ.numberOfLines=0;
    
    CGSize size = CGSizeMake(200,100);  
    UIFont *font = [UIFont fontWithName:@"Heiti SC" size:FONT_SIZE_PINYIN];
    CGSize labelsize = [trimsPinyinText sizeWithFont:font constrainedToSize:size lineBreakMode:UILineBreakModeWordWrap];     
    [labelPinyinQ setFrame:CGRectMake(0,0, 200, labelsize.height)]; 
    
    [viewQA addSubview:labelPinyinQ];