Package edu.cnm.deepdive.interviewprep.viewmodel

Class LoginViewModel

java.lang.Object

androidx.lifecycle.ViewModel

androidx.lifecycle.AndroidViewModel

edu.cnm.deepdive.interviewprep.viewmodel.LoginViewModel

All Implemented Interfaces:

DefaultLifecycleObserver, LifecycleObserver

public class LoginViewModel
extends AndroidViewModel
implements DefaultLifecycleObserver

Implements the business logic behind the application. Interacts with the GoogleSignInRepository to sign a User into the application.

Constructor Summary

Constructors

Constructor	Description
LoginViewModel(Application application)	Constructor for class.

Method Summary

Modifier and Type	Method	Description
void	completeSignIn(androidx.activity.result.ActivityResult result)	Interacts with the GoogleSignInRepository to sign a user into the application.
LiveData<GoogleSignInAccount>	getAccount()	Returns the GoogleSignInAccount.
LiveData<Throwable>	getThrowable()	Returns the throwable local variable.
void	onStop(LifecycleOwner owner)
void	refresh()	Interacts with the GoogleSignInRepository to refresh user credentials from the cloud.
void	signOut()	Interacts with the GoogleSignInRepository to sign the User out of their Google account.
void	startSignIn(androidx.activity.result.ActivityResultLauncher<Intent> launcher)	Interacts with the GoogleSignInRepository to begins the application sign in process.

Methods inherited from class androidx.lifecycle.AndroidViewModel

getApplication

Methods inherited from class androidx.lifecycle.ViewModel

onCleared

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Methods inherited from interface androidx.lifecycle.DefaultLifecycleObserver

onCreate, onDestroy, onPause, onResume, onStart

Constructor Detail

LoginViewModel

public LoginViewModel(@NonNull
                      Application application)

Constructor for class. Instantiates local variables and causes a silent refresh if necessary.

Parameters:

application - an application

Method Detail

getAccount

public LiveData<GoogleSignInAccount> getAccount()

Returns the GoogleSignInAccount.

Returns:

a reactivex LiveData object of type GoogleSignInAccount.

getThrowable

public LiveData<Throwable> getThrowable()

Returns the throwable local variable.

Returns:

a reactivex LiveData object of type Throwable.

refresh

public void refresh()

Interacts with the GoogleSignInRepository to refresh user credentials from the cloud. If the refresh fails, it does not get reported as an error; The user has to log in again.

startSignIn

public void startSignIn(androidx.activity.result.ActivityResultLauncher<Intent> launcher)

Interacts with the GoogleSignInRepository to begins the application sign in process.

Parameters:

launcher - an ActivityResultLauncher object of type Intent.

completeSignIn

public void completeSignIn(androidx.activity.result.ActivityResult result)

Interacts with the GoogleSignInRepository to sign a user into the application.

Parameters:

result - the result of the SignIn process

signOut

public void signOut()

Interacts with the GoogleSignInRepository to sign the User out of their Google account.

onStop

public void onStop(@NonNull
                   LifecycleOwner owner)

Specified by:

onStop in interface DefaultLifecycleObserver