Added in [API level 26](https://developer.android.com/guide/topics/manifest/uses-sdk-element#ApiLevels) Summary: [Ctors](https://developer.android.com/reference/android/net/wifi/aware/AttachCallback#pubctors) \| [Methods](https://developer.android.com/reference/android/net/wifi/aware/AttachCallback#pubmethods) \| [Inherited Methods](https://developer.android.com/reference/android/net/wifi/aware/AttachCallback#inhmethods)

# AttachCallback

*** ** * ** ***

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

|---|---|
| [java.lang.Object](https://developer.android.com/reference/java/lang/Object) ||
| ↳ | android.net.wifi.aware.AttachCallback |

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*** ** * ** ***

Base class for Aware attach callbacks. Should be extended by applications and set when calling `https://developer.android.com/reference/android/net/wifi/aware/WifiAwareManager#attach(android.net.wifi.aware.AttachCallback,%20android.os.Handler)`. These are callbacks applying to the Aware connection as a whole - not to specific publish or subscribe sessions - for that see `https://developer.android.com/reference/android/net/wifi/aware/DiscoverySessionCallback`.

## Summary

| ### Public constructors ||
|---|---|
| ` https://developer.android.com/reference/android/net/wifi/aware/AttachCallback#AttachCallback()() ` |

| ### Public methods ||
|---|---|
| ` void` | ` https://developer.android.com/reference/android/net/wifi/aware/AttachCallback#onAttachFailed()() ` Called when Aware attach operation `https://developer.android.com/reference/android/net/wifi/aware/WifiAwareManager#attach(android.net.wifi.aware.AttachCallback,%20android.os.Handler)` failed. |
| ` void` | ` https://developer.android.com/reference/android/net/wifi/aware/AttachCallback#onAttached(android.net.wifi.aware.WifiAwareSession)(https://developer.android.com/reference/android/net/wifi/aware/WifiAwareSession session) ` Called when Aware attach operation `https://developer.android.com/reference/android/net/wifi/aware/WifiAwareManager#attach(android.net.wifi.aware.AttachCallback,%20android.os.Handler)` is completed and that we can now start discovery sessions or connections. |
| ` void` | ` https://developer.android.com/reference/android/net/wifi/aware/AttachCallback#onAwareSessionTerminated()() ` Called when Aware attach session get from `https://developer.android.com/reference/android/net/wifi/aware/AttachCallback#onAttached(android.net.wifi.aware.WifiAwareSession)` is terminated. |

### 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

### AttachCallback

Added in [API level 26](https://developer.android.com/guide/topics/manifest/uses-sdk-element#ApiLevels)

```
public AttachCallback ()
```

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<br />

## Public methods

### onAttachFailed

Added in [API level 26](https://developer.android.com/guide/topics/manifest/uses-sdk-element#ApiLevels)

```
public void onAttachFailed ()
```

Called when Aware attach operation `https://developer.android.com/reference/android/net/wifi/aware/WifiAwareManager#attach(android.net.wifi.aware.AttachCallback,%20android.os.Handler)` failed.

<br />

### onAttached

Added in [API level 26](https://developer.android.com/guide/topics/manifest/uses-sdk-element#ApiLevels)

```
public void onAttached (WifiAwareSession session)
```

Called when Aware attach operation `https://developer.android.com/reference/android/net/wifi/aware/WifiAwareManager#attach(android.net.wifi.aware.AttachCallback,%20android.os.Handler)` is completed and that we can now start discovery sessions or connections.

<br />

| Parameters ||
|---|---|
| `session` | `WifiAwareSession`: The Aware object on which we can execute further Aware operations - e.g. discovery, connections. <br /> |

### onAwareSessionTerminated

Added in [API level 33](https://developer.android.com/guide/topics/manifest/uses-sdk-element#ApiLevels)

```
public void onAwareSessionTerminated ()
```

Called when Aware attach session get from `https://developer.android.com/reference/android/net/wifi/aware/AttachCallback#onAttached(android.net.wifi.aware.WifiAwareSession)` is terminated. Use `https://developer.android.com/reference/android/net/wifi/aware/WifiAwareManager#attach(android.net.wifi.aware.AttachCallback,%20android.os.Handler)` or `https://developer.android.com/reference/android/net/wifi/aware/WifiAwareManager#attach(android.net.wifi.aware.AttachCallback,%20android.net.wifi.aware.IdentityChangedListener,%20android.os.Handler)` to get a new active session.

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