# PagedList.Callback

Artifact: [androidx.paging:paging-common](https://developer.android.com/jetpack/androidx/releases/paging) [View Source](https://cs.android.com/search?q=file:androidx/paging/PagedList.kt+class:androidx.paging.PagedList.Callback) Added in [2.0.0](https://developer.android.com/jetpack/androidx/releases/paging#2.0.0) Deprecated in [3.0.0](https://developer.android.com/jetpack/androidx/releases/paging#3.0.0)

*** ** * ** ***


```
public abstract class PagedList.Callback
```

<br />

*** ** * ** ***

> [!CAUTION]
> **This class is deprecated.**   
> PagedList is deprecated and has been replaced by PagingData

Callback signaling when content is loaded into the list.

Can be used to listen to items being paged in and out. These calls will be dispatched on the dispatcher defined by `https://developer.android.com/reference/androidx/paging/PagedList.Builder#setNotifyDispatcher(kotlinx.coroutines.CoroutineDispatcher)`, which is generally the main/UI thread.

## Summary

| ### Public constructors |
|---|
| `[Callback](https://developer.android.com/reference/androidx/paging/PagedList.Callback#Callback())()` **This method is deprecated.** PagedList is deprecated and has been replaced by PagingData |

| ### Public methods |
|---|---|
| `abstract void` | `[onChanged](https://developer.android.com/reference/androidx/paging/PagedList.Callback#onChanged(kotlin.Int,kotlin.Int))(int position, int count)` **This method is deprecated.** PagedList is deprecated and has been replaced by PagingData |
| `abstract void` | `[onInserted](https://developer.android.com/reference/androidx/paging/PagedList.Callback#onInserted(kotlin.Int,kotlin.Int))(int position, int count)` **This method is deprecated.** PagedList is deprecated and has been replaced by PagingData |
| `abstract void` | `[onRemoved](https://developer.android.com/reference/androidx/paging/PagedList.Callback#onRemoved(kotlin.Int,kotlin.Int))(int position, int count)` **This method is deprecated.** PagedList is deprecated and has been replaced by PagingData |

## Public constructors

### Callback

Added in [2.0.0](https://developer.android.com/jetpack/androidx/releases/paging#2.0.0) Deprecated in [3.0.0](https://developer.android.com/jetpack/androidx/releases/paging#3.0.0)

```
public [Callback](https://developer.android.com/reference/androidx/paging/PagedList.Callback#Callback())()
```

> [!CAUTION]
> **This method is deprecated.**   
> PagedList is deprecated and has been replaced by PagingData

## Public methods

### onChanged

Added in [2.0.0](https://developer.android.com/jetpack/androidx/releases/paging#2.0.0) Deprecated in [3.0.0](https://developer.android.com/jetpack/androidx/releases/paging#3.0.0)

```
public abstract void [onChanged](https://developer.android.com/reference/androidx/paging/PagedList.Callback#onChanged(kotlin.Int,kotlin.Int))(int position, int count)
```

> [!CAUTION]
> **This method is deprecated.**   
> PagedList is deprecated and has been replaced by PagingData

Called when null padding items have been loaded to signal newly available data, or when data that hasn't been used in a while has been dropped, and swapped back to null.

| Parameters |
|---|---|
| `int position` | Position of first newly loaded items, out of total number of items (including padded nulls). |
| `int count` | Number of items loaded. |

### onInserted

Added in [2.0.0](https://developer.android.com/jetpack/androidx/releases/paging#2.0.0) Deprecated in [3.0.0](https://developer.android.com/jetpack/androidx/releases/paging#3.0.0)

```
public abstract void [onInserted](https://developer.android.com/reference/androidx/paging/PagedList.Callback#onInserted(kotlin.Int,kotlin.Int))(int position, int count)
```

> [!CAUTION]
> **This method is deprecated.**   
> PagedList is deprecated and has been replaced by PagingData

Called when new items have been loaded at the end or beginning of the list.

| Parameters |
|---|---|
| `int position` | Position of the first newly loaded item (in practice, either `0` or `size - 1`. |
| `int count` | Number of items loaded. |

### onRemoved

Added in [2.0.0](https://developer.android.com/jetpack/androidx/releases/paging#2.0.0) Deprecated in [3.0.0](https://developer.android.com/jetpack/androidx/releases/paging#3.0.0)

```
public abstract void [onRemoved](https://developer.android.com/reference/androidx/paging/PagedList.Callback#onRemoved(kotlin.Int,kotlin.Int))(int position, int count)
```

> [!CAUTION]
> **This method is deprecated.**   
> PagedList is deprecated and has been replaced by PagingData

Called when items have been removed at the end or beginning of the list, and have not been replaced by padded nulls.

| Parameters |
|---|---|
| `int position` | Position of the first newly loaded item (in practice, either `0` or `size - 1`. |
| `int count` | Number of items loaded. |