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StorageVolumeCallback
open class StorageVolumeCallback
Callback that delivers StorageVolume related events.
For example, this can be used to detect when a volume changes to the Environment.MEDIA_MOUNTED or Environment.MEDIA_UNMOUNTED states.
Summary
Public constructors
StorageVolumeCallback
StorageVolumeCallback()
Public methods
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Last updated 2025-02-10 UTC.
[[["Easy to understand","easyToUnderstand","thumb-up"],["Solved my problem","solvedMyProblem","thumb-up"],["Other","otherUp","thumb-up"]],[["Missing the information I need","missingTheInformationINeed","thumb-down"],["Too complicated / too many steps","tooComplicatedTooManySteps","thumb-down"],["Out of date","outOfDate","thumb-down"],["Samples / code issue","samplesCodeIssue","thumb-down"],["Other","otherDown","thumb-down"]],["Last updated 2025-02-10 UTC."],[],[],null,["# StorageManager.StorageVolumeCallback\n\nAdded in [API level 30](https://developer.android.com/guide/topics/manifest/uses-sdk-element.html#ApiLevels)\n\nStorageVolumeCallback\n=====================\n\n*** ** * ** ***\n\nKotlin \\|[Java](/reference/android/os/storage/StorageManager.StorageVolumeCallback \"View this page in Java\") \n\n```\nopen class StorageVolumeCallback\n```\n\n|---|--------------------------------------------------------------|\n| [kotlin.Any](https://kotlinlang.org/api/latest/jvm/stdlib/kotlin/-any/index.html) ||\n| ↳ | [android.os.storage.StorageManager.StorageVolumeCallback](#) |\n\nCallback that delivers [StorageVolume](/reference/kotlin/android/os/storage/StorageVolume) related events.\n\nFor example, this can be used to detect when a volume changes to the [Environment.MEDIA_MOUNTED](../Environment.html#MEDIA_MOUNTED:kotlin.String) or [Environment.MEDIA_UNMOUNTED](../Environment.html#MEDIA_UNMOUNTED:kotlin.String) states.\n\nSummary\n-------\n\n| Public constructors ||\n|--------------------------------------------------------------|---|\n| [StorageVolumeCallback](#StorageVolumeCallback())`()` \u003cbr /\u003e |\n\n| Public methods ||\n|-----------------------------------------------------------------------------------|------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|\n| open [Unit](https://kotlinlang.org/api/latest/jvm/stdlib/kotlin/-unit/index.html) | [onStateChanged](#onStateChanged(android.os.storage.StorageVolume))`(`volume:` `[StorageVolume](/reference/kotlin/android/os/storage/StorageVolume)`)` Called when [StorageVolume.getState()](/reference/kotlin/android/os/storage/StorageVolume#getState()) changes, such as changing to the [Environment.MEDIA_MOUNTED](../Environment.html#MEDIA_MOUNTED:kotlin.String) or [Environment.MEDIA_UNMOUNTED](../Environment.html#MEDIA_UNMOUNTED:kotlin.String) states. |\n\nPublic constructors\n-------------------\n\n### StorageVolumeCallback\n\n```\nStorageVolumeCallback()\n```\n\nPublic methods\n--------------\n\n### onStateChanged\n\nAdded in [API level 30](https://developer.android.com/guide/topics/manifest/uses-sdk-element.html#ApiLevels) \n\n```\nopen fun onStateChanged(volume: StorageVolume): Unit\n```\n\nCalled when [StorageVolume.getState()](/reference/kotlin/android/os/storage/StorageVolume#getState()) changes, such as changing to the [Environment.MEDIA_MOUNTED](../Environment.html#MEDIA_MOUNTED:kotlin.String) or [Environment.MEDIA_UNMOUNTED](../Environment.html#MEDIA_UNMOUNTED:kotlin.String) states.\n\nThe given argument is a snapshot in time and can be used to process events in the order they occurred, or you can call [StorageManager.getStorageVolumes()](/reference/kotlin/android/os/storage/StorageManager#getStorageVolumes()) to observe the latest value.\n\n| Parameters ||\n|----------|---------------------------------------------------------------------------------------------------|\n| `volume` | [StorageVolume](/reference/kotlin/android/os/storage/StorageVolume): This value cannot be `null`. |"]]
