WARNING: Using legacy cell layout due to delegate implementation of tableView:accessoryTypeForRowWithIndexPath: in *nil description*. Please remove your implementation of this method and set the cell properties accessoryType and/or editingAccessoryType to move to the new cell layout behavior. This method will no longer be called in a future release.
什么意思？
关于tableView的方法：“- (UITableViewCellAccessoryType)tableView:(UITableView *)tableView accessoryTypeForRowWithIndexPath:(NSIndexPath *)indexPath{}” 已经"depracted"
如果想设置cell的“UITableViewCellAccessoryType”； 可以通过cell的属性"cell.accessoryType"进行；