UITableViewCell 中的单选控制

UITableViewCell 中的单选控制 UITableViewCellAccessoryCheckmark

需要注意的是这个函数，用来设置cell的UITableViewCellAccessoryType 属性－－这里用到UITableViewCellAccessoryCheckmark

- (UITableViewCellAccessoryType)tableView:(UITableView *)tableView accessoryTypeForRowWithIndexPath:(NSIndexPath *)indexPath

{

     if(indexPath.row==currentIndex){

         return UITableViewCellAccessoryCheckmark;

     }

     else{

         return UITableViewCellAccessoryNone;

     }

}

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

{

     [tableView deselectRowAtIndexPath:indexPath animated:NO];

     if(indexPath.row==currentIndex){

         return;

     }

       NSIndexPath *oldIndexPath = [NSIndexPath indexPathForRow:currentIndex

                                                   inSection:0];

     UITableViewCell *newCell = [tableView cellForRowAtIndexPath:indexPath];

     if (newCell.accessoryType == UITableViewCellAccessoryNone) {

         newCell.accessoryType = UITableViewCellAccessoryCheckmark;

         newCell.textColor=[UIColor blueColor];

     }

     UITableViewCell *oldCell = [tableView cellForRowAtIndexPath:oldIndexPath];

     if (oldCell.accessoryType == UITableViewCellAccessoryCheckmark) {

         oldCell.accessoryType = UITableViewCellAccessoryNone;

         oldCell.textColor=[UIColor blackColor];

     }

     currentIndex=indexPath.row;

}

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

     UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:@"MyIdentifier"];

     if (cell == nil)

     {

         cell = [[[UITableViewCell alloc] initWithFrame:CGRectZero reuseIdentifier:@"MyIdentifier"] autorelease];

     }

     if(indexPath.row==currentIndex){

         cell.textColor=[UIColor blueColor];

     }

     else{

         cell.textColor=[UIColor blackColor];

     }

     cell.text=@"ttttttttttttttt";

     return cell;

}