高度排在指數路徑不正確顯示

Question

StackOverflow上的一個男孩給了這樣的幫助來設定自動根據標籤的內容的單元格的高度...

我已經實現了他的方法，但是當我在tavleview上滾動，每個單元格中的所有文本都會重疊，並且不會讀取任何內容...您能告訴我此代碼有什麼問題嗎？

我不得不改變CGSize因爲我對一些代碼ios7工作已被廢棄，例如：

CGSize size = [comment sizeWithFont: [UIFont systemFontOfSize: 14] constrainedToSize: lineBreakMode constraint: UILineBreakModeWordWrap]; 

你能幫助我嗎？

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

    PFObject *object = [self objectAtIndexPath:indexPath]; 
    //Here you are getting the comment again. This is necessary to determine how tall you need 
    //the cell to be 
    NSString *comment = [object objectForKey:(@"Testo")]; 

    // Again you are getting the constraints because you are going to us this size 
    // to constrain the height of the cell just like you determined the size for the label. 
    CGSize constraint = CGSizeMake(250 - (10 * 2), 10000.0f); 

    // Again, determining the size that we will need for the label, because it will drive 
    // the height of the cell 
    UIFont *FONT = [UIFont systemFontOfSize:11]; 

    CGSize size = [comment boundingRectWithSize:constraint options:NSStringDrawingUsesLineFragmentOrigin attributes:@{NSFontAttributeName:FONT }context:nil].size; 

    // Finally, we can determine the height for the cell! 
    CGFloat height = MAX(size.height, 44.0f); 

    // return the height, which is the height of the label plus some extra space to make 
    // it look good. 
    return height + (10 * 2); 
} 

// Override to customize the look of a cell representing an object. The default is to display 
// a UITableViewCellStyleDefault style cell with the label being the first key in the object. 

- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath object:(PFObject *)object { 
    static NSString *CellIdentifier = @"Cell"; 

    UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:CellIdentifier]; 
    if (cell == nil) { 
     cell = [[UITableViewCell alloc] initWithStyle:UITableViewCellStyleSubtitle reuseIdentifier:CellIdentifier]; 
    } 
    NSString *text = [object objectForKey:@"Testo"]; 


    CGSize constraint = CGSizeMake(250 - (10 * 2), 10000.0f); 

    // This is determining the size that you will need for the label based on the comment 
    // length and the contraint size 

    UIFont *FONT = [UIFont systemFontOfSize:11]; 

    CGSize size = [text boundingRectWithSize:constraint options:NSStringDrawingUsesLineFragmentOrigin attributes:@{NSFontAttributeName:FONT }context:nil].size; 

    // Here you are creating your label and initializing it with the frame that you have 
    // determined by your size calculations above 
    UILabel *label = [[UILabel alloc] initWithFrame:CGRectMake(0, 0, 300, MAX(size.height, 44.0f) + 20.0f)]; 

    // setting up the label properties 


    label.numberOfLines = 0; 
    label.lineBreakMode = NSLineBreakByWordWrapping; 
    label.text = text; 
    label.font = [UIFont systemFontOfSize:11]; 

    // adding the label view to the cell that you have created 
    [cell.contentView addSubview:label]; 

    // Configure the cell 


    return cell; 
} 

Answer 1

解決

- (CGFloat)tableView:(UITableView *)tableView heightForRowAtIndexPath:(NSIndexPath *)indexPath; 
{ 
    NSString *comment = [[self.objects objectAtIndex:[indexPath row]] objectForKey:@"Testo"]; 
    CGFloat whidt = 260; 
    UIFont *FONT = [UIFont systemFontOfSize:15]; 
    NSAttributedString *attributedText =[[NSAttributedString alloc] initWithString:comment attributes:@ { NSFontAttributeName: FONT }]; 
    CGRect rect = [attributedText boundingRectWithSize:(CGSize){whidt, MAXFLOAT} 
               options:NSStringDrawingUsesLineFragmentOrigin 
               context:nil]; 
    CGSize size = rect.size; 
    return size.height +130; 
} 

- (FFCustomCellTimeline *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath object:(PFObject *)object { 

    FFCustomCellTimeline *cell = (FFCustomCellTimeline *)[self.tableView dequeueReusableCellWithIdentifier:@"Cell"]; 
    if (!cell) { 
     cell = [[FFCustomCellTimeline alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:@"Cell"]; 
    } 


    NSString *text = [object objectForKey:@"Testo"]; 
    CGSize constraint = CGSizeMake(260 , 20000.0f); 
    UIFont *FONT = [UIFont systemFontOfSize:15]; 
    CGSize size = [text boundingRectWithSize:constraint options:NSStringDrawingUsesLineFragmentOrigin attributes:@{NSFontAttributeName:FONT }context:nil].size; 


    return cell; 
}