UITableView从右至左滑动

Question

- (BOOL)tableView:(UITableView *)tableView canEditRowAtIndexPath:(NSIndexPath *)indexPath
{
    return YES;
}

- (UITableViewCellEditingStyle)tableView:(UITableView *)tableView editingStyleForRowAtIndexPath:(NSIndexPath *)indexPath{
    return UITableViewCellEditingStyleDelete;
}
- (void)tableView:(UITableView *)tableView commitEditingStyle(UITableViewCellEditingStyle)editingStyle forRowAtIndexPath:(NSIndexPath *)indexPath{

    if(editingStyle == UITableViewCellEditingStyleDelete){
        //[theSimpsons removeObjectAtIndex:indexPath.row];

        NSString *time = [[arrayList objectAtIndex:indexPath.row] objectForKey:@"TIME"];
        NSString *date= [[arrayList objectAtIndex:indexPath.row] objectForKey:@"DATE"];
        DBManager *dbm = [[DBManager alloc] init];
        [dbm initiallzeDatabase];
        [dbm deleteItemAtIndexPath:time :date];

        //arrayList = [dbm getParkResults];
        //[parkTableView reloadData];

        [arrayList removeObjectAtIndex:indexPath.row];

        [tableView deleteRowsAtIndexPaths:[NSArray arrayWithObject:indexPath] withRowAnimation:UITableViewRowAnimationFade];
    }
}

这是我应用中的部分代码，编辑部分很正常，只是删除键只有在单元中从左至右滑动时才显示。现在我有一个从左至右打开的菜单，我想让用户从右至左滑动时，删除键也会显示。

Answer 1

ChatGPT尝试为您解答，仅供参考
您可以通过实现表视图的 tableView:leadingSwipeActionsConfigurationForRowAtIndexPath: 方法来实现从右向左滑动时显示删除按钮。

这是您可以使用的一个例子：

- (UISwipeActionsConfiguration *)tableView:(UITableView *)tableView leadingSwipeActionsConfigurationForRowAtIndexPath:(NSIndexPath *)indexPath {
    // Create a delete action
    UIContextualAction *deleteAction = [UIContextualAction contextualActionWithStyle:UIContextualActionStyleDestructive title:@"Delete" handler:^(UIContextualAction * _Nonnull action, __kindof UIView * _Nonnull sourceView, void (^ _Nonnull completionHandler)(BOOL)) {
        // Perform delete action here
        // Remove the item from the data source
        [arrayList removeObjectAtIndex:indexPath.row];
        // Delete the row from the table view
        [tableView deleteRowsAtIndexPaths:@[indexPath] withRowAnimation:UITableViewRowAnimationFade];
        // Call completion handler to dismiss the action button
        completionHandler(YES);
    }];
    // Create and return a swipe actions configuration with the delete action
    UISwipeActionsConfiguration *config = [UISwipeActionsConfiguration configurationWithActions:@[deleteAction]];
    return config;
}

您也可以通过实现表视图的 tableView:trailingSwipeActionsConfigurationForRowAtIndexPath: 方法来实现从右向左滑动时显示删除按钮。

这是您可以使用的一个例子：

- (UISwipeActionsConfiguration *)tableView:(UITableView *)tableView trailingSwipeActionsConfigurationForRowAtIndexPath:(NSIndexPath *)indexPath {
    // Create a delete action
    UIContextualAction *deleteAction = [UIContextualAction contextualActionWithStyle:UIContextualActionStyleDestructive title:@"Delete" handler:^(UIContextualAction * _Nonnull action, __kindof UIView * _Nonnull sourceView, void (^ _Nonnull completionHandler)(BOOL)) {
        // Perform delete action here
        // Remove the item from the data source
        [arrayList removeObjectAtIndex:indexPath.row];
        // Delete the row from the table view
        [tableView deleteRowsAtIndexPaths:@[indexPath] withRowAnimation:UITableViewRowAnimationFade];
        // Call completion handler to dismiss the action button
        completionHandler(YES);
    }];
    // Create and return a swipe actions configuration with the delete action
    UISwipeActionsConfiguration *config = [UISwipeActionsConfiguration configurationWithActions:@[deleteAction]];
    return config;
}

请注意，您可能还需要在表视图的代理中设置 editingStyleForRowAtIndexPath: 为 UITableViewCellEditingStyleDelete，以便当用户从左向右滑动时也显示删除按钮。