Added in [API level 8](https://developer.android.com/guide/topics/manifest/uses-sdk-element#ApiLevels) Summary: [Ctors](https://developer.android.com/reference/android/app/backup/RestoreObserver#pubctors) \| [Methods](https://developer.android.com/reference/android/app/backup/RestoreObserver#pubmethods) \| [Inherited Methods](https://developer.android.com/reference/android/app/backup/RestoreObserver#inhmethods)

# RestoreObserver

*** ** * ** ***

` public abstract class RestoreObserver `   
` extends https://developer.android.com/reference/java/lang/Object ` ` `

|---|---|
| [java.lang.Object](https://developer.android.com/reference/java/lang/Object) ||
| ↳ | android.app.backup.RestoreObserver |

<br />

*** ** * ** ***

Callback class for receiving progress reports during a restore operation. These methods will all be called on your application's main thread.

## Summary

| ### Public constructors ||
|---|---|
| ` https://developer.android.com/reference/android/app/backup/RestoreObserver#RestoreObserver()() ` |

| ### Public methods ||
|---|---|
| ` void` | ` https://developer.android.com/reference/android/app/backup/RestoreObserver#onUpdate(int,%20java.lang.String)(int nowBeingRestored, https://developer.android.com/reference/java/lang/String currentPackage) ` An indication of which package is being restored currently, out of the total number provided in the `https://developer.android.com/reference/android/app/backup/RestoreObserver#restoreStarting(int)` callback. |
| ` void` | ` https://developer.android.com/reference/android/app/backup/RestoreObserver#restoreFinished(int)(int error) ` The restore process has completed. |
| ` void` | ` https://developer.android.com/reference/android/app/backup/RestoreObserver#restoreStarting(int)(int numPackages) ` The restore operation has begun. |

### Inherited methods

From class ` https://developer.android.com/reference/java/lang/Object ` ` https://developer.android.com/reference/java/lang/Object` ` https://developer.android.com/reference/java/lang/Object#clone()() `

Creates and returns a copy of this object.
` boolean` ` https://developer.android.com/reference/java/lang/Object#equals(java.lang.Object)(https://developer.android.com/reference/java/lang/Object obj) `

Indicates whether some other object is "equal to" this one.
` void` ` https://developer.android.com/reference/java/lang/Object#finalize()() `

Called by the garbage collector on an object when garbage collection determines that there are no more references to the object.
` final https://developer.android.com/reference/java/lang/Class<?>` ` https://developer.android.com/reference/java/lang/Object#getClass()() `

Returns the runtime class of this `Object`.
` int` ` https://developer.android.com/reference/java/lang/Object#hashCode()() `

Returns a hash code value for the object.
` final void` ` https://developer.android.com/reference/java/lang/Object#notify()() `

Wakes up a single thread that is waiting on this object's monitor.
` final void` ` https://developer.android.com/reference/java/lang/Object#notifyAll()() `

Wakes up all threads that are waiting on this object's monitor.
` https://developer.android.com/reference/java/lang/String` ` https://developer.android.com/reference/java/lang/Object#toString()() `

Returns a string representation of the object.
` final void` ` https://developer.android.com/reference/java/lang/Object#wait(long,%20int)(long timeoutMillis, int nanos) `

Causes the current thread to wait until it is awakened, typically by being *notified* or *interrupted*, or until a certain amount of real time has elapsed.
` final void` ` https://developer.android.com/reference/java/lang/Object#wait(long)(long timeoutMillis) `

Causes the current thread to wait until it is awakened, typically by being *notified* or *interrupted*, or until a certain amount of real time has elapsed.
` final void` ` https://developer.android.com/reference/java/lang/Object#wait()() `

Causes the current thread to wait until it is awakened, typically by being *notified* or *interrupted*.

## Public constructors

### RestoreObserver

```
public RestoreObserver ()
```

<br />

<br />

## Public methods

### onUpdate

Added in [API level 8](https://developer.android.com/guide/topics/manifest/uses-sdk-element#ApiLevels)

```
public void onUpdate (int nowBeingRestored, 
                String currentPackage)
```

An indication of which package is being restored currently, out of the total number provided in the `https://developer.android.com/reference/android/app/backup/RestoreObserver#restoreStarting(int)` callback. This method is not guaranteed to be called: if the transport is unable to obtain data for one or more of the requested packages, no onUpdate() call will occur for those packages.

<br />

| Parameters ||
|---|---|
| `nowBeingRestored` | `int`: The index, between 1 and the numPackages parameter to the `https://developer.android.com/reference/android/app/backup/RestoreObserver#restoreStarting(int)` callback, of the package now being restored. This may be non-monotonic; it is intended purely as a rough indication of the backup manager's progress through the overall restore process. <br /> |
| `currentPackage` | `String`: The name of the package now being restored. <br /> |

### restoreFinished

Added in [API level 8](https://developer.android.com/guide/topics/manifest/uses-sdk-element#ApiLevels)

```
public void restoreFinished (int error)
```

The restore process has completed. This method will always be called, even if no individual package restore operations were attempted.

<br />

| Parameters ||
|---|---|
| `error` | `int`: Zero on success; a nonzero error code if the restore operation as a whole failed. <br /> |

### restoreStarting

Added in [API level 8](https://developer.android.com/guide/topics/manifest/uses-sdk-element#ApiLevels)

```
public void restoreStarting (int numPackages)
```

The restore operation has begun.

<br />

| Parameters ||
|---|---|
| `numPackages` | `int`: The total number of packages being processed in this restore operation. <br /> |