如何更改單元格背景顏色或圖像上點擊ipad

Question

我想嘗試，當我點擊單元格，然後顏色應該改變，顏色應該留在那個單元格，我被clicked.till在這裏，我是成功的this.But當表刷新則單元格背景顏色消失，在那裏我錯了，請幫我在這，我從蘋果文檔的代碼，我用這個。我錯過代碼

- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath { 

    static NSString *CellIdentifier = @"Cell"; 

    UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:CellIdentifier]; 

    if (cell == nil) { 
     cell = [[[UITableViewCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:CellIdentifier] autorelease]; 

     //here i create view with color for cell when cell is click this view should display as background i am write or wrong by doing this please help me here why my view is disappear when my tableview is refresh then this view is disapper from cell i want to stay that place till user not click other cell&mt tableview is grouped tableview. 
     UIView *v = [[[UIView alloc] init] autorelease]; 
     v.layer.cornerRadius =6.0f; 
     v.backgroundColor = [UIColor darkGrayColor]; 
     cell.selectedBackgroundView = v; 
     } 
    return cell; 
} 



- (void)tableView:(UITableView *)tableView willDisplayCell:(UITableViewCell *)cell forRowAtIndexPath:(NSIndexPath *)indexPath { 
    if (indexPath.row == 0 || indexPath.row%1 == 0) { 
     UIColor *altCellColor = [UIColor colorWithWhite:0.2 alpha:0.1]; 
     cell.backgroundColor = altCellColor; 

    } 


} 

Answer 1

一些線如果你希望你的選擇留存那麼你可以保存你選擇的indexPath並使用下面的方法：

NSIndexPath *rowToSelect; //save your selected indexPath 

[myTableView selectRowAtIndexPath:rowToSelect animated:YES scrollPosition:UITableViewScrollPositionNone; 
[myTableView scrollToRowAtIndexPath:rowToSelect atScrollPosition:UITableViewScrollPositionNon animate:YES];