UserAliasHandler (mParticle Android SDK API Reference)

```
@Deprecated
public interface UserAliasHandler
```
Deprecated.

to the BaseIdentityTask that is being returned from this method )BaseIdentityTask.addSuccessListener(TaskSuccessListener). Within the IdentityApiResult returned by the success listener, you can run the same code you do in you UserAliasHandler, using the MParticleUsers returned by IdentityApiResult.getUser() and IdentityApiResult.getPreviousUser() in place of "newUser" and "previousUser" respectively Interface which will handle the transition between Users.

Method Summary

All Methods Instance Methods Abstract Methods Deprecated Methods
Modifier and Type	Method	Description
`void`	`onUserAlias(MParticleUser previousUser, MParticleUser newUser)`	Deprecated. A handler for when Users change.

- Method Detail
  - onUserAlias
```
void onUserAlias(@NonNull
                 MParticleUser previousUser,
                 @NonNull
                 MParticleUser newUser)
```
    Deprecated.
    
    A handler for when Users change. Any carry-over in state between an outgoing user and an incoming user, should take place here.
    
    Parameters:
    
    previousUser - the outgoing User
    
    newUser - the incoming User