Firebase AuthUI provoquant l'effondrement de l'application

Question

Ceci est mon premier article ici, donc tout conseil est apprécié.

Je rencontre un problème lorsque d'autres personnes téléchargent mon application. Il provoque le blocage de l'application au lancement. Cela fonctionne parfaitement lorsque j'installe des mises à jour et semble être un problème provenant d'utilisateurs n'ayant pas d'UID Firebase créé lors du premier lancement.

est ici Code principal Activité:

package com.example.android.cellavino; 

import android.content.Intent; 
import android.net.Uri; 
import android.support.annotation.NonNull; 
import android.support.design.widget.FloatingActionButton; 
import android.support.v4.widget.DrawerLayout; 
import android.support.v7.app.ActionBarDrawerToggle; 
import android.support.v7.app.AppCompatActivity; 
import android.os.Bundle; 
import android.support.v7.widget.RecyclerView; 
import android.util.Log; 
import android.view.Menu; 
import android.view.MenuInflater; 
import android.view.MenuItem; 
import android.view.View; 
import android.widget.Button; 
import android.widget.ListView; 
import android.widget.ProgressBar; 
import android.widget.TextView; 
import android.widget.Toast; 

import com.example.android.cellavino.PojoDirectory.UI2.UserDetailsPojo; 
import com.example.android.cellavino.UserInterface.WineAdapter; 
import com.example.android.cellavino.UserInterface2.WineDetails.CreateNewWine; 
import com.example.android.cellavino.UserInterface2.CreateTasting.MyTastings; 
import com.example.android.cellavino.UserInterface2.EditProfile.EditProfile; 
import com.example.android.cellavino.UserInterface2.JoinTasting.JoinTasting; 
import com.example.android.cellavino.UserInterface2.WineDetails.MyWinesList; 
import com.example.android.cellavino.Utils.Constants; 
import com.firebase.client.Firebase; 
import com.firebase.client.FirebaseError; 
import com.firebase.client.ValueEventListener; 
import com.firebase.ui.auth.AuthUI; 
import com.google.firebase.auth.FirebaseAuth; 
import com.google.firebase.auth.FirebaseUser; 
import com.google.firebase.database.ChildEventListener; 
import com.google.firebase.database.DatabaseReference; 
import com.google.firebase.database.FirebaseDatabase; 
import com.google.firebase.database.ServerValue; 
import com.google.firebase.remoteconfig.FirebaseRemoteConfig; 
import com.google.firebase.storage.FirebaseStorage; 

import java.util.Arrays; 
import java.util.HashMap; 

public class MainActivity extends AppCompatActivity { 

    private static final String TAG = "MainActivity"; 
    private static final String LOG_TAG = MainActivity.class.getSimpleName(); 
    public static final String ANONYMOUS = "anonymous"; 
    public static final int RC_SIGN_IN = 1; 
    public String mUsername; 


    private FirebaseAuth mFirebaseAuth; 
    private FirebaseAuth.AuthStateListener mAuthStateListener; 
    private FirebaseDatabase mFirebaseDatabase; 
    private DatabaseReference mWineDatabaseReference; 
    private DatabaseReference mUserDatabaseReference; 
    private DatabaseReference mMyWinesReference; 
    private ChildEventListener mChildEventListener; 

    private FirebaseRemoteConfig mFirebaseRemoteConfig; 
    private FirebaseStorage mFirebaseStorage; 
    private WineAdapter mWineAdapter; 
    private ListView mWineListView; 
    private RecyclerView mWineRecyclerView; 
    private RecyclerView.Adapter mAdapter; 
    private ProgressBar mProgressBar; 
    private RecyclerView.LayoutManager mLayoutManager; 
    private DrawerLayout mNavigationDrawerLayout; 
    private ActionBarDrawerToggle mActionBarDrawerToggle; 
    private ListView mWineInformation; 
    private TextView mWineName; 
    private CharSequence mDrawerTitle; 
    private CharSequence mTitle; 
    private ListView mDrawerList; 
    private String[] mMenuOptions; 
    private Uri userProfilePic; 
    private TextView mUsernameTextView; 


    @Override 
    protected void onCreate(Bundle savedInstanceState) { 
     super.onCreate(savedInstanceState); 
     setContentView(R.layout.activity_main); 
     //setContentView(R.layout.my_wines_list); 
     //setContentView(R.layout.activity_container); 
     //getSupportFragmentManager().beginTransaction().replace(R.id.container, new MyWinesListFragment()).commit(); 

     //Initialise Firebase 
     Firebase.setAndroidContext(this); 

     mUsername = ANONYMOUS; 

     //mTitle = mDrawerTitle = getTitle(); 


     mFirebaseDatabase = FirebaseDatabase.getInstance(); 
     mFirebaseAuth = FirebaseAuth.getInstance(); 
     mFirebaseStorage = FirebaseStorage.getInstance(); 
     mFirebaseRemoteConfig = FirebaseRemoteConfig.getInstance(); 

     //WineDatabase in Firebase initialisation 
     mWineDatabaseReference = mFirebaseDatabase.getReference().child("Wine Details"); 
     mUserDatabaseReference = mFirebaseDatabase.getReference().child("Users"); 
     mMyWinesReference = mFirebaseDatabase.getReference().child("Users").child("myWines"); 


     //initialising the views 
     //ListView mWineListView = (ListView) findViewById(R.id.wineListView); 


     mAuthStateListener = new FirebaseAuth.AuthStateListener() { 
      @Override 
      public void onAuthStateChanged(@NonNull FirebaseAuth firebaseAuth) { 
       FirebaseUser user = firebaseAuth.getCurrentUser(); 
       if (user != null) { 
        //user is signed in 
        onSignedInInialise(user.getDisplayName()); 

       } else { 
        //user is signed out 
        onSignedOutCleanup(); 
        startActivityForResult(
          AuthUI.getInstance() 
            .createSignInIntentBuilder() 
            .setIsSmartLockEnabled(false) 
            .setProviders(Arrays.asList(
              new AuthUI.IdpConfig.Builder(AuthUI.EMAIL_PROVIDER).build(), 
              new AuthUI.IdpConfig.Builder(AuthUI.GOOGLE_PROVIDER).build())) 
            .build(), 
          RC_SIGN_IN); 
       } 

      } 
     }; 

     //add code that will bring up the Add_Wine screen when a user clicks on the floating action button for addwine. 

     FloatingActionButton addWineFab = (FloatingActionButton) findViewById(R.id.addWineFab); 
     addWineFab.setOnClickListener(new View.OnClickListener() { 
      @Override 
      public void onClick(View view) { 
       Intent intent = new Intent(MainActivity.this, CreateNewWine.class); 
       startActivity(intent); 
      } 
     }); 


     //initialise view_my_wines button click listener 
     Button viewMyWinesButton = (Button) findViewById(R.id.view_my_wines); 
     viewMyWinesButton.setOnClickListener(new View.OnClickListener() { 
      @Override 
      public void onClick(View view) { 
       Intent intent = new Intent(MainActivity.this, MyWinesList.class); 
       startActivity(intent); 

      } 
     }); 

     //initialise edit_profile button click listener 
     Button editProfileButton = (Button) findViewById(R.id.edit_profile); 
     editProfileButton.setOnClickListener(new View.OnClickListener() { 
      @Override 
      public void onClick(View view) { 
       Intent intent = new Intent(MainActivity.this, EditProfile.class); 
       startActivity(intent); 

      } 
     }); 


     //initialise edit_profile button click listener 
     Button createTastingButton = (Button) findViewById(R.id.create_tasting); 
     createTastingButton.setOnClickListener(new View.OnClickListener() { 
      @Override 
      public void onClick(View view) { 
       Intent intent = new Intent(MainActivity.this, MyTastings.class); 
       startActivity(intent); 

      } 
     }); 

     //initialise edit_profile button click listener 
     Button joinTastingButton = (Button) findViewById(R.id.join_tasting); 
     joinTastingButton.setOnClickListener(new View.OnClickListener() { 
      @Override 
      public void onClick(View view) { 
       Intent intent = new Intent(MainActivity.this, JoinTasting.class); 
       startActivity(intent); 

      } 
     }); 

     FirebaseUser user = mFirebaseAuth.getCurrentUser(); 
     String userName = user.getDisplayName(); 
     if (user != null) { 
      TextView mUsernameTextView = (TextView) findViewById(R.id.user_name); 
      mUsernameTextView.setText(userName); 
     } else { 
      TextView mUsernameTextView = (TextView) findViewById(R.id.user_name); 
      mUsernameTextView.setVisibility(View.GONE); 
     } 

    } 


    @Override 
    public void onActivityResult(int requestCode, int resultCode, Intent data) { 
     super.onActivityResult(requestCode, resultCode, data); 

     if (requestCode == RC_SIGN_IN) { 
      if (resultCode == RESULT_OK) { 
       FirebaseUser user = mFirebaseAuth.getCurrentUser(); 
       String uid = user.getUid(); 
       String userName = user.getDisplayName(); 
       String userEmail = user.getEmail(); 
       Uri userProfilePic = user.getPhotoUrl(); 
       createUserInFirebaseHelper(uid, userName, userEmail); 
       Toast.makeText(MainActivity.this, "Hello " + userName + "!", Toast.LENGTH_SHORT).show(); 

      } else if (resultCode == RESULT_CANCELED) { 
       Toast.makeText(MainActivity.this, "Sign in cancelled", Toast.LENGTH_SHORT).show(); 
       finish(); 
      } 
     } 
    } 

    private void createUserInFirebaseHelper(String uid, String userName, String userEmail) { 

     final String mUserName = userName; 
     final String mUserEmail = userEmail; 
     final Firebase userDetailLocation = new Firebase(Constants.FIREBASE_URL_LOCATION_USERS).child(uid); 

     //See if there is already a user (for example, if they already logged in with an associated google account 

     userDetailLocation.addListenerForSingleValueEvent(new ValueEventListener() { 
      @Override 
      public void onDataChange(com.firebase.client.DataSnapshot dataSnapshot) { 
       // If there is no user, make one 
       if (dataSnapshot.getValue() == null) { 
        //Set raw version of date to the ServerValue.TIMESTAMP value and save into dateCreatedMap 
        HashMap<String, Object> timestampJoined = new HashMap<>(); 
        timestampJoined.put(Constants.FIREBASE_PROPERTY_TIMESTAMP, ServerValue.TIMESTAMP); 
        UserDetailsPojo newUser = new UserDetailsPojo(mUserName, mUserEmail, timestampJoined); 
        userDetailLocation.setValue(newUser); 
       } 
      } 

      @Override 
      public void onCancelled(FirebaseError firebaseError) { 
       Log.d(LOG_TAG, getString(R.string.log_error_occurred) + firebaseError.getMessage()); 

      } 
     }); 
    } 

    //When the app comes back from background state etc 
    @Override 
    protected void onResume() { 
     super.onResume(); 
     mFirebaseAuth.addAuthStateListener(mAuthStateListener); 
    } 


    //When the app goes to background state 
    @Override 
    protected void onPause() { 
     super.onPause(); 
     if (mAuthStateListener != null) { 
      mFirebaseAuth.removeAuthStateListener(mAuthStateListener); 
     } 
     detachDatabaseReadListener(); 
     //mWineAdapter.clear(); 
    } 

    @Override 
    public boolean onCreateOptionsMenu(Menu menu) { 
     MenuInflater inflater = getMenuInflater(); 
     inflater.inflate(R.menu.activity_navigation_drawer, menu); 
     return true; 
    } 

    @Override 
    public boolean onOptionsItemSelected(MenuItem item) { 
     //if (mActionBarDrawerToggle.onOptionsItemSelected(item)) { 
     // return true; 
     //} 

     switch (item.getItemId()) { 
      case R.id.sign_out_menu: 
       //sign out 
       AuthUI.getInstance().signOut(this); 
       return true; 
      /* 
      case R.id.menu_add_wine: 
       //add wine 
       Intent intent = new Intent(MainActivity.this, AddWine.class); 
       startActivity(intent); 
       return true; 

      case R.id.view_my_wines: 
       //view the working wine list Andrews Wines 
       Intent intent2 = new Intent(MainActivity.this, MyWinesList.class); 
       startActivity(intent2); 
       return true; 

      case R.id.test_option: 
       //view the test screens for Andrews Wines 
       Intent intent3 = new Intent(MainActivity.this, Login.class); 
       startActivity(intent3); 
       return true; 
      */ 
      default: 
       return super.onOptionsItemSelected(item); 
     } 
    } 


    private void onSignedInInialise(String username) { 
     mUsername = username; 
     //attachDatabaseReadListener(); 

     //this code adds a new user name each time it logs in. 
     //mUserDatabaseReference.push().setValue(username); 

    } 

    private void onSignedOutCleanup() { 
     mUsername = ANONYMOUS; 
     //mWineAdapter.clear(); 
     detachDatabaseReadListener(); 
    } 

    /* 
    private void attachDatabaseReadListener() { 
     if (mChildEventListener == null) { 
      mChildEventListener = new ChildEventListener() { 
       @Override 
       public void onChildAdded(DataSnapshot dataSnapshot, String s) { 
        WineDetails wineDetails = dataSnapshot.getValue(WineDetails.class); 
        //mWineAdapter.add(wineDetails); 
       } 

       @Override 
       public void onChildChanged(DataSnapshot dataSnapshot, String s) { 
       } 

       @Override 
       public void onChildRemoved(DataSnapshot dataSnapshot) { 
       } 

       @Override 
       public void onChildMoved(DataSnapshot dataSnapshot, String s) { 
       } 

       @Override 
       public void onCancelled(DatabaseError databaseError) { 
       } 
      }; 
      mWineDatabaseReference.addChildEventListener(mChildEventListener); 
     } 
    } 
*/ 
    private void detachDatabaseReadListener() { 
     if (mChildEventListener != null) { 
      mWineDatabaseReference.removeEventListener(mChildEventListener); 
      mChildEventListener = null; 
     } 
    } 


    private void initializeScreen(View rootView) { 
     mWineInformation = (ListView) rootView.findViewById(R.id.wine_list_item_details); 
     mWineName = (TextView) rootView.findViewById(R.id.wine_name); 


    } 


} 

Comment puis-je régler de sorte qu'il vérifie si un utilisateur a un profil et si ce ne les dirige vers la page de connexion?

Merci d'avance.

Answer 1

Je l'ai compris. J'appelais getDisplayName() avant de vérifier l'authentification.

Merci pour les pointeurs sur la façon de poser une question. J'ai attendu 6 mois avant d'en poster un car je n'étais pas vraiment sûr de savoir comment/quoi demander. Maintenant je sais. :)