BackupManager Class
Definition
Important
Some information relates to prerelease product that may be substantially modified before it’s released. Microsoft makes no warranties, express or implied, with respect to the information provided here.
The interface through which an application interacts with the Android backup service to request backup and restore operations.
[Android.Runtime.Register("android/app/backup/BackupManager", DoNotGenerateAcw=true)]
public class BackupManager : Java.Lang.Object[<Android.Runtime.Register("android/app/backup/BackupManager", DoNotGenerateAcw=true)>]
type BackupManager = class
inherit Object- Inheritance
- Attributes
Remarks
The interface through which an application interacts with the Android backup service to request backup and restore operations. Applications instantiate it using the constructor and issue calls through that instance.
When an application has made changes to data which should be backed up, a call to #dataChanged() will notify the backup service. The system will then schedule a backup operation to occur in the near future. Repeated calls to #dataChanged() have no further effect until the backup operation actually occurs.
A backup or restore operation for your application begins when the system launches the android.app.backup.BackupAgent subclass you've declared in your manifest. See the documentation for android.app.backup.BackupAgent for a detailed description of how the operation then proceeds.
Several attributes affecting the operation of the backup and restore mechanism can be set on the <a href="{@docRoot}guide/topics/manifest/application-element.html"><application></a> tag in your application's AndroidManifest.xml file.
<div class="special reference"> <h3>Developer Guides</h3>
For more information about using BackupManager, read the Data Backup developer guide.
</div>
Java documentation for android.app.backup.BackupManager.
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.
Constructors
| Name | Description |
|---|---|
| BackupManager(Context) |
Constructs a BackupManager object through which the application can communicate with the Android backup system. |
| BackupManager(IntPtr, JniHandleOwnership) |
A constructor used when creating managed representations of JNI objects; called by the runtime. |
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 |
Gets the state flags last assigned by the runtime. (Inherited from JavaObject) |
| JniPeerMembers |
Gets the JNI metadata used to access members of this Java binding. |
| 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. |
| ThresholdType |
This API supports the Mono for Android infrastructure and is not intended to be used directly from your code. |
Methods
| Name | Description |
|---|---|
| Clone() |
Creates and returns a copy of this object. (Inherited from Object) |
| Construct(JniObjectReference, JniObjectReferenceOptions) |
Delegates construction of this peer to the runtime's value manager. (Inherited from JavaObject) |
| DataChanged() |
Notifies the Android backup system that your application wishes to back up new changes to its data. |
| DataChanged(String) |
Convenience method for callers who need to indicate that some other package needs a backup pass. |
| 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() |
Asks the value manager to dispose this peer unless its mapping retains this same managed instance. (Inherited from JavaObject) |
| Equals(Object) |
Tests whether another managed peer refers to the same Java object. (Inherited from JavaObject) |
| Equals(Object) |
Indicates whether some other object is "equal to" this one. (Inherited from Object) |
| GetHashCode() |
Returns a hash code value for the object. (Inherited from Object) |
| GetUserForAncestralSerialNumber(Int64) |
Returns a |
| 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) |
| RequestRestore(RestoreObserver) |
This member is deprecated. |
| SetHandle(IntPtr, JniHandleOwnership) |
Sets the Handle property. (Inherited from Object) |
| SetPeerReference(JniObjectReference, JniObjectReferenceOptions) |
Stores a reference value in the control block without creating a JNI reference copy. (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) |
| 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() |
Marks this peer as disposed and calls |
| IJavaPeerable.Finalized() |
Marks this peer as disposed and calls |
| IJavaPeerable.JniObjectReferenceControlBlock |
Gets the native control-block pointer used by this peer. (Inherited from JavaObject) |
| IJavaPeerable.SetJniIdentityHashCode(Int32) |
Stores the identity hash code supplied by the runtime. (Inherited from JavaObject) |
| IJavaPeerable.SetJniManagedPeerState(JniManagedPeerStates) |
Replaces the stored managed peer state flags. (Inherited from JavaObject) |
| IJavaPeerable.SetPeerReference(JniObjectReference) |
Updates the peer reference and releases a disposed peer's control block when the reference is invalid. (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) |
Reuses a compatible managed peer or obtains a wrapper of the requested type. |
| TryJavaCast<TResult>(IJavaPeerable, TResult) |
Try to coerce |