FileManager Class
Definition
Important
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System service manager for handling privileged, long-running file operations.
[Android.Runtime.Register("android/os/storage/FileManager", ApiSince=37, DoNotGenerateAcw=true)]
public sealed class FileManager : Java.Lang.Object[<Android.Runtime.Register("android/os/storage/FileManager", ApiSince=37, DoNotGenerateAcw=true)>]
type FileManager = class
inherit Object- Inheritance
- Attributes
Remarks
System service manager for handling privileged, long-running file operations.
The FileManager provides an API for applications to request asynchronous file operations such as moving or copying files. These operations are executed by the system service (`FileService`) on a background thread to ensure application responsiveness and system stability. Usage Overview
Interacting with the file operation service generally involves three steps: Enqueueing a Request: Use enqueueOperation(FileOperationRequest) to submit a new operation. This method returns immediately with a FileOperationEnqueueResult, which contains a unique Request ID (if successful) or an error code (if the system is busy); Tracking Progress (Optional): Apps can poll the current status of an operation using fetchResult(String) or simply wait for completion; Handling Completion: To receive a notification when the operation finishes (either successfully or with a failure), call registerCompletionListener(String). The system will send a broadcast ACTION_FILE_OPERATION_COMPLETED to your package when the operation reaches a terminal state. Concurrency and Limits
The system enforces limits on the number of concurrent pending operations to prevent resource exhaustion. If the system is under heavy load, enqueueOperation(FileOperationRequest) may return a result with the error code FileOperationResult.ERROR_BUSY. Applications should handle this case gracefully, potentially by retrying later.
Android reference for android.os.storage.FileManager.
Portions of this page are modifications based on work created and shared by the Android Open Source Project and used according to terms described in the Creative Commons 2.5 Attribution License.
Fields
| Name | Description |
|---|---|
| ActionFileOperationCompleted |
Broadcast Action: Sent when a file operation has completed. |
| ExtraRequestId |
Extra for |
| ExtraResult |
Extra for |
Properties
| Name | Description |
|---|---|
| Class |
Returns the runtime class of this |
| Handle |
The handle to the underlying Android instance. (Inherited from Object) |
| JniIdentityHashCode |
Gets the identity hash code assigned to this Java peer by the interop runtime. (Inherited from Object) |
| JniManagedPeerState | (Inherited from JavaObject) |
| JniPeerMembers | |
| MaxReportedFailures |
Due to binder transaction limits, the number of reported failures is limited to number returned by this method. |
| PeerReference |
Gets the JNI object reference for this Java peer. (Inherited from Object) |
| ThresholdClass |
This API supports the Mono for Android infrastructure and is not intended to be used directly from your code. (Inherited from Object) |
| ThresholdType |
This API supports the Mono for Android infrastructure and is not intended to be used directly from your code. (Inherited from Object) |
Methods
| Name | Description |
|---|---|
| Clone() |
Creates and returns a copy of this object. (Inherited from Object) |
| Construct(JniObjectReference, JniObjectReferenceOptions) | (Inherited from JavaObject) |
| Dispose() |
Releases the resources held by this Java peer. (Inherited from Object) |
| Dispose(Boolean) |
Releases the resources held by this Java peer. (Inherited from Object) |
| DisposeUnlessReferenced() | (Inherited from JavaObject) |
| EnqueueOperation(FileOperationRequest) |
Enqueues a new file operation request. |
| Equals(Object) | (Inherited from JavaObject) |
| Equals(Object) |
Indicates whether some other object is "equal to" this one. (Inherited from Object) |
| FetchResult(String) |
Retrieves the current result of a file operation. |
| GetHashCode() |
Returns a hash code value for the object. (Inherited from Object) |
| JavaFinalize() |
Obsolete.
Called by the garbage collector on an object when garbage collection determines that there are no more references to the object. (Inherited from Object) |
| Notify() |
Wakes up a single thread that is waiting on this object's monitor. (Inherited from Object) |
| NotifyAll() |
Wakes up all threads that are waiting on this object's monitor. (Inherited from Object) |
| RegisterCompletionListener(String) |
Registers a listener for the completion of a specific file operation. |
| SetHandle(IntPtr, JniHandleOwnership) |
Sets the Handle property. (Inherited from Object) |
| SetPeerReference(JniObjectReference, JniObjectReferenceOptions) | (Inherited from JavaObject) |
| ToArray<T>() |
Creates a managed array from this Java array wrapper. (Inherited from Object) |
| ToString() |
Returns a string representation of the object. (Inherited from Object) |
| UnregisterCompletionListener(String) |
Unregisters a previously registered completion listener for a specific file operation. |
| UnregisterFromRuntime() |
Unregisters this Java peer from the interop runtime. (Inherited from Object) |
| Wait() |
Causes the current thread to wait until it is awakened, typically by being <em>notified</em> or <em>interrupted</em>. (Inherited from Object) |
| Wait(Int64, Int32) |
Causes the current thread to wait until it is awakened, typically by being <em>notified</em> or <em>interrupted</em>, or until a certain amount of real time has elapsed. (Inherited from Object) |
| Wait(Int64) |
Causes the current thread to wait until it is awakened, typically by being <em>notified</em> or <em>interrupted</em>, or until a certain amount of real time has elapsed. (Inherited from Object) |
Explicit Interface Implementations
| Name | Description |
|---|---|
| IJavaPeerable.Disposed() | (Inherited from JavaObject) |
| IJavaPeerable.Finalized() | (Inherited from JavaObject) |
| IJavaPeerable.JniObjectReferenceControlBlock | (Inherited from JavaObject) |
| IJavaPeerable.SetJniIdentityHashCode(Int32) | (Inherited from JavaObject) |
| IJavaPeerable.SetJniManagedPeerState(JniManagedPeerStates) | (Inherited from JavaObject) |
| IJavaPeerable.SetPeerReference(JniObjectReference) | (Inherited from JavaObject) |
Extension Methods
| Name | Description |
|---|---|
| GetJniTypeName(IJavaPeerable) |
Gets the JNI name of the type of the instance |
| JavaAs<TResult>(IJavaPeerable) |
Try to coerce |
| JavaCast<TResult>(IJavaObject) |
Performs an Android runtime-checked type conversion. |
| JavaCast<TResult>(IJavaObject) | |
| TryJavaCast<TResult>(IJavaPeerable, TResult) |
Try to coerce |