Question

我有一个tableView，其中列出了学生姓名，并突出显示当前绿色的行或红色表示缺席。如果单击该行，颜色将更改为反映并更改学生的状态。但是，当学生被标记为缺席（突出显示为红色），然后我将该行滚出视图时，该行变为灰色。我希望这一排保持红色（呃）。这是tableView方法

- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section
{

    // Return the number of rows in the section.
    return [kidsNames count];
}

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

    UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:CellIdentifier];

    if (cell == nil){
        cell = [[UITableViewCell alloc] initWithStyle:UITableViewCellStyleValue1 reuseIdentifier:CellIdentifier];

    }

    cell.textLabel.text = [kidsNames objectAtIndex:(indexPath.row)];
    NSString * status=[kidsAbsent objectAtIndex:indexPath.row];
    if([status isEqualToString: @"Present"]==1){
        cell.contentView.backgroundColor = [UIColor greenColor];
    }else{
        cell.contentView.backgroundColor = [UIColor redColor];
    }



    return cell;
}



- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath {

       NSString * ab=[kidsAbsent objectAtIndex:indexPath.row];
       static NSString *CellIdentifier = @"myCell";
       UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:CellIdentifier];

   cell =  [tableView cellForRowAtIndexPath:indexPath];


    NSLog(@"CLICKED!");

    if([ab isEqualToString: @"Present"]==1){
        [kidsAbsent replaceObjectAtIndex:indexPath.row withObject:@"Absent"];
        cell.contentView.backgroundColor = [UIColor redColor];
         NSLog(@"Now Absent %@",[kidsNames objectAtIndex:(indexPath.row)]);
    }else{
          cell.contentView.backgroundColor = [UIColor greenColor];
          [kidsAbsent replaceObjectAtIndex:indexPath.row withObject:@"Present"];
           NSLog(@"Now Present %@",[kidsNames objectAtIndex:(indexPath.row)]);
    }


     stuID=[kidsID objectAtIndex:indexPath.row];
     stuAB=[kidsAbsent objectAtIndex:indexPath.row];


}


- (void)tableView:(UITableView *)tableView didDeselectRowAtIndexPath:(NSIndexPath *)indexPath {

    NSString * ab=[kidsAbsent objectAtIndex:indexPath.row];
    static NSString *CellIdentifier = @"myCell";
    UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:CellIdentifier];

    cell =  [tableView cellForRowAtIndexPath:indexPath];


    NSLog(@"CLICKED!");

    if([ab isEqualToString: @"Present"]==1){
        [kidsAbsent replaceObjectAtIndex:indexPath.row withObject:@"Absent"];
         cell.contentView.backgroundColor = [UIColor redColor];
          NSLog(@"Now Absent %@",[kidsNames objectAtIndex:(indexPath.row)]);
    }else{
         cell.contentView.backgroundColor = [UIColor greenColor];
        [kidsAbsent replaceObjectAtIndex:indexPath.row withObject:@"Present"];
        NSLog(@"Now Present %@",[kidsNames objectAtIndex:(indexPath.row)]);
    }


    //send info to the web===============================================================================
    stuID=[kidsID objectAtIndex:indexPath.row];
    stuAB=[kidsAbsent objectAtIndex:indexPath.row];


}

Answer 1

尝试设置cell.backgroundView而不是cell.contentView.backgroundColor 或者使用cell.contentView.backgroundColor，但是你应该注意，必须在tableView:willDisplayCell:forRowAtIndexPath:方法中设置backgroundColor（来自UITableViewCell reference）：

使用Objective C和Xcode 6重写UITableView的问题

1 个答案: