單元可重用導致在iOS5中重新獲取數據

我爲我的表視圖使用自定義單元格。在我的單元格中，我有imageview &按鈕。我在單行中顯示3個圖像。當我選擇按鈕，我使用複選框圖像&當再次點擊按鈕，它取消選擇複選框圖像。當我選擇第一行中的按鈕滾動tabelview，它也檢查第3或第4行上的按鈕。我認爲這是由於細胞的重用。這裏是我的cellForRowAtIndexPath代碼：單元可重用導致在iOS5中重新獲取數據

- (UITableViewCell *)tableView:(UITableView *)tableView1 cellForRowAtIndexPath:(NSIndexPath *)indexPath 
{ 
    static NSString *CellIdentifier = @"LibraryElementsCell"; 
    LibraryElementsCell *cell = (LibraryElementsCell *) [tableView1 dequeueReusableCellWithIdentifier:CellIdentifier]; 

    if (cell == nil) 
    { 
     NSArray *cellArray=[[NSBundle mainBundle] loadNibNamed:@"LibraryElementsCell" owner:self options:nil]; 
     cell=[cellArray objectAtIndex:0]; 

     [cell.firstElementButton setImage:[UIImage imageNamed:CHECKBOX_UNCHECKED_IMAGE] forState:UIControlStateNormal]; 
     [cell.firstElementButton addTarget:self action:@selector(checkBoxSelectedOnLibraryElement:event:) forControlEvents:UIControlEventTouchUpInside]; 

     [cell.secondElementButton setImage:[UIImage imageNamed:CHECKBOX_UNCHECKED_IMAGE] forState:UIControlStateNormal]; 
     [cell.secondElementButton addTarget:self action:@selector(checkBoxSelectedOnLibraryElement:event:) forControlEvents:UIControlEventTouchUpInside]; 

     [cell.thirdElementButton setImage:[UIImage imageNamed:CHECKBOX_UNCHECKED_IMAGE] forState:UIControlStateNormal]; 
     [cell.thirdElementButton addTarget:self action:@selector(checkBoxSelectedOnLibraryElement:event:) forControlEvents:UIControlEventTouchUpInside]; 

     tableView1.backgroundColor = [UIColor clearColor]; 
     tableView1.separatorStyle = UITableViewCellSeparatorStyleNone; 
     cell.selectionStyle = UITableViewCellSelectionStyleNone; 
    } 

    NSMutableArray *tempArray = [self.categoriesArray objectAtIndex:indexPath.section]; 

    int row = indexPath.row * 3; 

    if (row <= [tempArray count]) 
    { 
     LibraryElement *libElement = [tempArray objectAtIndex:row]; 
     cell.firstElementImageView.image = [UIImage imageNamed:libElement.imageName]; 
    } 

    if ((row + 1) < [tempArray count]) 
    { 
     LibraryElement *libElement = [tempArray objectAtIndex:row+1]; 
     cell.secondElementImageView.image = [UIImage imageNamed:libElement.imageName]; 
    } 
    else { 
     [cell.secondElementImageView setHidden:YES]; 
     [cell.secondElementButton setHidden:YES]; 
    } 

    if ((row + 2) < [tempArray count]) 
    { 
     LibraryElement *libElement = [tempArray objectAtIndex:row+2]; 
     cell.thirdElementImageView.image = [UIImage imageNamed:libElement.imageName]; 
    } 
    else { 
     [cell.thirdElementImageView setHidden:YES]; 
     [cell.thirdElementButton setHidden:YES]; 
    } 

    return cell; 
}

而且有時隱藏按鈕&的ImageView被meessed起來的邏輯。即使數據可用，它也會隱藏imageview &按鈕。

幫助任何knid高度appreciated.Thanks

來源

2012-06-14 iOSAppDev

您需要每次都刷新電池組件例如創建這需要數據的單元格內的刷新方法，並繪製細胞成分

refreshCellView：讓細胞
後：（NSDictionary的）數據

和電話的cellForRowAtIndexPath裏面refreshCellView

來源

2012-06-14 12:08:45

單元可重用導致在iOS5中重新獲取數據

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