```
public final class AttachmentsPickerViewModel
extends ViewModel
                    
```
ViewModel for the attachment picker. Drives picker tab state, device storage browsing, and the isSelected checkmarks shown in attachments.
Note: attachments reflects only the checkmark selection, not the full attachment list staged for the message. The composer attachment list is owned by MessageComposerViewModel.
The active tab and checkmark selection survive process death (e.g. "Don't keep activities"). Checkmarks are not reset on hide — they persist until the session is explicitly consumed (e.g. after a message is sent, a poll is created, or a command is selected).

Field Summary

Fields
Modifier and Type	Field	Description
`private final Channel`	`channel`
`private final AttachmentPickerMode`	`pickerMode`
`private final Boolean`	`isPickerVisible`
`private final List<AttachmentPickerItemState>`	`attachments`
`private final Flow<SubmittedAttachments>`	`submittedAttachments`

Constructor Summary

Constructors
Constructor	Description
`AttachmentsPickerViewModel(AttachmentStorageHelper storageHelper, StateFlow<ChannelState> channelState, SavedStateHandle savedStateHandle)`
`AttachmentsPickerViewModel(AttachmentStorageHelper storageHelper, StateFlow<ChannelState> channelState)`

Method Summary

Modifier and Type	Method	Description
`final Channel`	`getChannel()`	The current Channel information.
`final AttachmentPickerMode`	`getPickerMode()`	The active picker tab.
`final Boolean`	`getIsPickerVisible()`	Whether the attachment picker is currently visible.
`final List<AttachmentPickerItemState>`	`getAttachments()`	The attachment list for the active pickerMode, with each item's AttachmentPickerItemState.isSelected reflecting the current picker selection.
`final Flow<SubmittedAttachments>`	`getSubmittedAttachments()`
`final Unit`	`setPickerMode(AttachmentPickerMode mode)`	Switches the active picker tab.
`final Unit`	`setPickerVisible(Boolean visible)`	Shows or hides the attachment picker.
`final Unit`	`togglePickerVisibility()`	Toggles the attachment picker visibility.
`final List<Attachment>`	`getAttachmentsFromMetadata(List<AttachmentMetaData> metaData)`	Converts the given metaData into lightweight Attachments ready to be staged in the composer.
`final Unit`	`loadAttachments()`	Loads attachment metadata from device storage for the current pickerMode.
`final Unit`	`resolveAndSubmitUris(List<Uri> uris)`	Resolves uris from a system picker into Attachments and emits the result via submittedAttachments.

Methods inherited from class io.getstream.chat.android.compose.viewmodel.messages.AttachmentsPickerViewModel
addCloseable, addCloseable, addCloseable, getCloseable
Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- Constructor Detail
  - AttachmentsPickerViewModel
```
AttachmentsPickerViewModel(AttachmentStorageHelper storageHelper, StateFlow<ChannelState> channelState, SavedStateHandle savedStateHandle)
```
    Parameters:
    
    storageHelper - Provides device storage queries and attachment conversion.
    
    channelState - Provides the current ChannelState for channel-specific configuration.
    
    savedStateHandle - Persists picker tab and selection state across process death.
  - AttachmentsPickerViewModel
```
AttachmentsPickerViewModel(AttachmentStorageHelper storageHelper, StateFlow<ChannelState> channelState)
```
    Parameters:
    
    storageHelper - Provides device storage queries and attachment conversion.
    
    channelState - Provides the current ChannelState for channel-specific configuration.
- Method Detail
  - getChannel
```
 final Channel getChannel()
```
    The current Channel information.
  - getPickerMode
```
 final AttachmentPickerMode getPickerMode()
```
    The active picker tab.
  - getIsPickerVisible
```
 final Boolean getIsPickerVisible()
```
    Whether the attachment picker is currently visible.
  - getAttachments
```
 final List<AttachmentPickerItemState> getAttachments()
```
    The attachment list for the active pickerMode, with each item's AttachmentPickerItemState.isSelected reflecting the current picker selection.
  - getSubmittedAttachments
```
 final Flow<SubmittedAttachments> getSubmittedAttachments()
```
  - setPickerMode
```
 final Unit setPickerMode(AttachmentPickerMode mode)
```
    Switches the active picker tab.
    
    Parameters:
    
    mode - The AttachmentPickerMode to activate.
  - setPickerVisible
```
 final Unit setPickerVisible(Boolean visible)
```
    Shows or hides the attachment picker. Hiding clears cached media data but preserves the current selection so checkmarks remain when the picker is reopened.
    
    Parameters:
    
    visible - true to show the picker, false to hide it.
  - togglePickerVisibility
```
 final Unit togglePickerVisibility()
```
    Toggles the attachment picker visibility.
  - getAttachmentsFromMetadata
```
 final List<Attachment> getAttachmentsFromMetadata(List<AttachmentMetaData> metaData)
```
    Converts the given metaData into lightweight Attachments ready to be staged in the composer.
    
    Parameters:
    
    metaData - The metadata items to convert.
  - loadAttachments
```
 final Unit loadAttachments()
```
    Loads attachment metadata from device storage for the current pickerMode.
  - resolveAndSubmitUris
```
 final Unit resolveAndSubmitUris(List<Uri> uris)
```
    Resolves uris from a system picker into Attachments and emits the result via submittedAttachments.
    URIs whose content is inaccessible (e.g. cloud-backed files not downloaded to the device) are detected via a lightweight accessibility check and excluded from the result. When any URI is inaccessible, hasUnresolvedAttachments is set so the UI layer can display an appropriate message.
    
    Parameters:
    
    uris - Content URIs returned by the system picker.

Class AttachmentsPickerViewModel

Field Summary

Constructor Summary

Method Summary

Methods inherited from class io.getstream.chat.android.compose.viewmodel.messages.AttachmentsPickerViewModel

Methods inherited from class java.lang.Object

Constructor Detail

AttachmentsPickerViewModel

AttachmentsPickerViewModel

Method Detail

getChannel

getPickerMode

getIsPickerVisible

getAttachments

getSubmittedAttachments

setPickerMode

setPickerVisible

togglePickerVisibility

getAttachmentsFromMetadata

loadAttachments

resolveAndSubmitUris