- (NSArray *)tableView:(UITableView *)tableView editActionsForRowAtIndexPath:(nonnull NSIndexPath *)indexPath{
   
//1.删除按钮
 UITableViewRowAction *deleteAction = [UITableViewRowAction rowActionWithStyle:(UITableViewRowActionStyleDestructive) title:@"删除" handler:^(UITableViewRowAction *action, NSIndexPath *indexPath) {
               //1.更新数据源
                [self.listArray removeObjectAtIndex:indexPath.row];
                //2.更新UI
                [tableView deleteRowsAtIndexPaths:@[indexPath] withRowAnimation:(UITableViewRowAnimationAutomatic)];   
    }];
      deleteAction.backgroundColor = StyleColor;
//2.其它按钮
//3.其他按钮
    return @[deleteAction];//返回按钮数组
}