UIContextualAction单元格侧滑按钮

• (nullable UISwipeActionsConfiguration *)tableView:(UITableView *)tableView trailingSwipeActionsConfigurationForRowAtIndexPath:(NSIndexPath *)indexPath {

  UIContextualAction *deleteAction = [UIContextualAction
  contextualActionWithStyle:UIContextualActionStyleDestructive
  title:@"删除"
  handler:^(UIContextualAction * _Nonnull action,
  __kindof UIView * _Nonnull sourceView,
  void (^ _Nonnull completionHandler)(BOOL))
  {
  [self.titles removeObjectAtIndex:indexPath.row];

    [self.tableView deleteRowsAtIndexPaths: [NSArray arrayWithObjects:indexPath, nil] withRowAnimation:UITableViewRowAnimationAutomatic];
    
    completionHandler(true);
  

  }];

  // 设置按钮图片
  [deleteAction setImage:[UIImage imageNamed:@"Star"]];

NSArray *actions = [[NSArray alloc] initWithObjects:deleteAction, nil];

return [UISwipeActionsConfiguration configurationWithActions:actions];

}