iPhone：與桌面視圖問題

Question

此代碼並不按要求工作，並沒有加載完整的數據的第一次，並從下一次滾動工作正常。

#define ROW_HEIGHT 110 

// Customize the appearance of table view cells. 
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath { 
NSLog(@"Setting table text."); 

static NSString *CellIdentifier = @"Transaction"; 

UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:CellIdentifier]; 
if (cell == nil) { 
    cell = [[[UITableViewCell alloc] initWithFrame:CGRectZero reuseIdentifier:CellIdentifier] autorelease]; 
    [cell addSubview:[[UILabel alloc] initWithFrame:CGRectMake(40.0, 0.0, 280.0, ROW_HEIGHT - 1)]]; 
} 

NSUInteger row = [indexPath row]; 

NSLog(@"Table cell text: %@", [[transactionHistory objectAtIndex:row] description]); 

UILabel *labelText = [[cell subviews] lastObject]; 
labelText.text = [[transactionHistory objectAtIndex:row] description]; 
labelText.font = [UIFont systemFontOfSize:14]; 
labelText.lineBreakMode = UILineBreakModeWordWrap; 
labelText.numberOfLines = 5;  

return cell; 
} 


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

什麼可能是錯的？

Answer 1

替換該行

[cell addSubview:[[UILabel alloc] initWithFrame:CGRectMake(40.0, 0.0, 280.0, ROW_HEIGHT - 1)]]; 

要

[cell.contentView addSubview:[[UILabel alloc] initWithFrame:CGRectMake(40.0, 0.0, 280.0, ROW_HEIGHT - 1)]];