---
title: UITableViewDropPlaceholder
framework: uikit
role: symbol
role_heading: Class
path: uikit/uitableviewdropplaceholder
---

# UITableViewDropPlaceholder

A placeholder cell that supports customizing the drop preview parameters.

## Declaration

```swift
@MainActor class UITableViewDropPlaceholder
```

## Overview

Overview When you want to insert a placeholder cell into your table, create a UITableViewDropPlaceholder object and pass it to the drop(_:to:) method of your UITableViewDropCoordinator. You use a placeholder cell to display a temporary interface while you load the cell’s contents asynchronously. For example, your placeholder cell might display a progress indicator or a message that the cell content isn’t yet available. The placeholder object contains the reuse identifier of the temporary cell you want to display in your table. It can also include a custom preview to use during the drop. You must register the cells you use with your placeholders in advance. In your storyboard file, add a table view cell object to your table, configure its appearance, set its class to UITableViewCell (or an appropriate subclass), and assign a reuse identifier to it. When you create your UITableViewDropPlaceholder object, pass the cell’s reuse identifier to init(insertionIndexPath:reuseIdentifier:rowHeight:). The table view uses the information in your placeholder object to insert the cell into the table. Set the cellUpdateHandler to a block of code that configures the cell as a placeholder for the incoming data. For more information, see Supporting drag and drop in table views. important: Placeholder cells are meant to be a temporary part of your table view. Always replace them with actual cells as soon as possible, or cancel the drop to remove them from the table. Use the methods of a UITableViewDropPlaceholderContext object to remove placeholders from your table.

## Topics

### Providing preview parameters

- [previewParametersProvider](uikit/uitableviewdropplaceholder/previewparametersprovider.md)

## Relationships

### Inherits From

- [UITableViewPlaceholder](uikit/uitableviewplaceholder.md)

### Conforms To

- [CVarArg](swift/cvararg.md)
- [CustomDebugStringConvertible](swift/customdebugstringconvertible.md)
- [CustomStringConvertible](swift/customstringconvertible.md)
- [Equatable](swift/equatable.md)
- [Hashable](swift/hashable.md)
- [NSObjectProtocol](objectivec/nsobjectprotocol.md)

## See Also

### Placeholder cells

- [UITableViewDropPlaceholderContext](uikit/uitableviewdropplaceholdercontext.md)
- [UITableViewPlaceholder](uikit/uitableviewplaceholder.md)