Firebase AuthUIがクラッシュするアプリケーション

Question

これは私の最初の投稿ですので、どんな指針もありがとうございます。

他のユーザーが自分のアプリをダウンロードするときに問題が発生します。それは起動時にアプリケーションをクラッシュさせます。アップデートをインストールすると完全に動作し、最初に起動したときに作成されたFirebase UIDを持っていないユーザーからの問題と思われます。ここで

が主な活動コードは次のとおりです。

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); 


    } 


} 

それは、ユーザーがプロファイルを持っているし、そうでない場合は、ログインページにそれらを指示しているかどうかをチェックして、私はそれを調整することができますどのように？

ありがとうございます。

Answer 1

私はそれを理解しました。認証を確認する前にgetDisplayName（）を呼び出していました。

質問を投稿する方法を教えてくれてありがとう。私は実際にどのように/何を尋ねるべきか分からなかったので、1つを投稿する前に6ヶ月待った。今私は知っている。 :)