如何更改tableview單元格圖像？

Question

我在側欄中有表格視圖，類似於Facebook應用程序。 在我的側邊欄tableview中，每一行都有imageview。 我希望當我單擊單元格時imageview將被更改，並且在選擇另一個單元格時將保留它。 這是我的代碼

 - (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];
}
[[cell.contentView subviews] makeObjectsPerformSelector:@selector(removeFromSuperview)];

UIView * contentView = [[UIView alloc]initWithFrame:CGRectMake(0, 0, 320, 60)];

UIImageView * cellImg = [[UIImageView alloc]initWithFrame:CGRectMake(5,8,259, 60)];
[cellImg setImage:[UIImage imageNamed:[menuArr objectAtIndex:indexPath.row]]];
[contentView addSubview:cellImg];

[contentView setBackgroundColor:[UIColor clearColor]];
[cell.contentView addSubview:contentView];
cell.selectionStyle = UITableViewCellSelectionStyleNone;
return cell;
}

 #pragma mark - Table view delegate

- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath {
delegate.sideBarSelectedIndex = indexPath.row;
NSLog(@"delegate.sideBarSelectedIndex: %d",delegate.sideBarSelectedIndex);

[UIView commitAnimations];
if (self.sidebarDelegate) {
    NSObject *object = [NSString stringWithFormat:@"ViewController%d", indexPath.row];
    [self.sidebarDelegate sidebarViewController:self didSelectObject:object atIndexPath:indexPath];
    [delegate.firstLensePageObj timerFunction:indexPath.row];
}

}

Answer 1

在您的didSelectRowAtIndexPath委托方法中嘗試一下：

UITableViewCell *cell = [tableView cellForRowAtIndexPath:indexPath];
cell.imageView.image = [UIImage imageNamed:@"yourImage"];

Answer 2

在cellForRowAtIndexPath中嘗試此操作。

  UIImageView *selectedImageView = [[UIImageView alloc] initWithImage:[UIImage imageNamed:@"Your Image"]];

  cell.selectedBackgroundView = selectedImageView;

Answer 3

需要在didSelectRowAtIndexPath：方法中捕獲選定的索引路徑，並需要在該方法中重新加載表視圖。 在cellForRowAtIndexPath中需要用當前索引檢查所選索引。

    - (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];
    }
    [[cell.contentView subviews] makeObjectsPerformSelector:@selector(removeFromSuperview)];

    UIView * contentView = [[UIView alloc]initWithFrame:CGRectMake(0, 0, 320, 60)];

    UIImageView * cellImg = [[UIImageView alloc]initWithFrame:CGRectMake(5,8,259, 60)];
if (delegate.sideBarSelectedIndex == indexpath.row){
//Selected cell
    [cellImg setImage:[UIImage imageNamed:[selectedMenuArr objectAtIndex:indexPath.row]]];
}else {
//Unselected cell
    [cellImg setImage:[UIImage imageNamed:[menuArr objectAtIndex:indexPath.row]]];
}
    [contentView addSubview:cellImg];

    [contentView setBackgroundColor:[UIColor clearColor]];
    [cell.contentView addSubview:contentView];
    cell.selectionStyle = UITableViewCellSelectionStyleNone;
    return cell;
    }

     #pragma mark - Table view delegate

    - (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath {
    delegate.sideBarSelectedIndex = indexPath.row;
    NSLog(@"delegate.sideBarSelectedIndex: %d",delegate.sideBarSelectedIndex);

    [UIView commitAnimations];
    if (self.sidebarDelegate) {
        NSObject *object = [NSString stringWithFormat:@"ViewController%d", indexPath.row];
        [self.sidebarDelegate sidebarViewController:self didSelectObject:object atIndexPath:indexPath];
        [delegate.firstLensePageObj timerFunction:indexPath.row];
    }

    }