Wsrtjtyk

I have done with the text feteching from the database, buit while fetching image from the database using picasso the images are not loading the phone and the logcat is displaying the error :

com.example.lenovo.skanda E/StorageUtil: error getting token java.util.concurrent.ExecutionException: com.google.firebase.internal.api.FirebaseNoSignedInUserException: Please sign in before trying to get a token.

The textviews are easily getting fetching from the firebase. But in case of ImageView its not loading properly.

QuoteList.java

public class QuoteList extends AppCompatActivity {



    private StorageReference storageRef;



    RecyclerView  mRecyclerView;

    FirebaseDatabase mFirebaseDatabase;

    DatabaseReference mReference;



    @Override

    protected void onCreate(Bundle savedInstanceState) {

        super.onCreate(savedInstanceState);

        setContentView(R.layout.activity_quote_list);



        //ActionBar actionBar = getSupportActionBar();

        //getSupportActionBar().setTitle("Quotes");

        //getSupportActionBar().setDisplayHomeAsUpEnabled(true);

        //getSupportActionBar().setHomeButtonEnabled(true);



        final LinearLayoutManager layoutManager = new LinearLayoutManager(this);

        layoutManager.setOrientation(LinearLayoutManager.VERTICAL);

        mRecyclerView = findViewById(R.id.quotes_list);

        mRecyclerView.setLayoutManager(layoutManager);





        mFirebaseDatabase = FirebaseDatabase.getInstance();

        mReference = mFirebaseDatabase.getReference("Quotes");

    }











    @Override

    protected void onStart() {

        super.onStart();



        FirebaseRecyclerAdapter<Quote, QuoteViewHolder> firebaseRecyclerAdapter =

                new FirebaseRecyclerAdapter<Quote, QuoteViewHolder>(

                        Quote.class,

                        R.layout.quote_row,

                        QuoteViewHolder.class,

                        mReference

                ) {



                    @Override

                    protected void populateViewHolder(QuoteViewHolder viewHolder , Quote model , int position) {



                     //   viewHolder.setDetails(getApplicationContext(), model.getQuotes(), model.getQuote_Author(), model.getImages());

                            viewHolder.setQuotes(model.getQuotes());

                            viewHolder.setQuoteAuthor(model.getQuote_Author());

                            viewHolder.setImage(getApplicationContext(),model.getImages());





                    }

                };



        mRecyclerView.setAdapter(firebaseRecyclerAdapter);



    }



    public static class QuoteViewHolder extends RecyclerView.ViewHolder{



        View mView;



        public QuoteViewHolder(View itemView) {

            super(itemView);



            mView = itemView;

        }



        public void setQuotes(String Quote){

            TextView post_quote = (TextView) mView.findViewById(R.id.post_quote);

            post_quote.setText(Quote);

        }



        public void setQuoteAuthor(String QuoteAuthor){

            TextView post_quoteAuthor = (TextView) mView.findViewById(R.id.post_author);

            post_quoteAuthor.setText(QuoteAuthor);

        }



        public void setImage(Context ctx, String image){

            ImageView post_image = (ImageView) mView.findViewById(R.id.post_image);

            Picasso.get().load(image).into(post_image);



        }

    }



    @Override

    public boolean onCreateOptionsMenu(Menu menu) {



        getMenuInflater().inflate(R.menu.main_menu, menu);

        return super.onCreateOptionsMenu(menu);

    }

}

I am also attaching the logcat error report. Please go through it.

    11-04 16:16:37.413 6688-7596/com.example.lenovo.skanda E/StorageUtil: error getting token java.util.concurrent.ExecutionException: com.google.firebase.internal.api.FirebaseNoSignedInUserException: Please sign in before trying to get a token.

11-04 16:16:39.547 6688-7596/com.example.lenovo.skanda E/StorageUtil: error getting token java.util.concurrent.ExecutionException: com.google.firebase.internal.api.FirebaseNoSignedInUserException: Please sign in before trying to get a token.

11-04 16:16:40.567 6688-7596/com.example.lenovo.skanda E/StorageUtil: error getting token java.util.concurrent.ExecutionException: com.google.firebase.internal.api.FirebaseNoSignedInUserException: Please sign in before trying to get a token.

11-04 16:16:41.948 6688-7596/com.example.lenovo.skanda E/StorageUtil: error getting token java.util.concurrent.ExecutionException: com.google.firebase.internal.api.FirebaseNoSignedInUserException: Please sign in before trying to get a token.

11-04 16:16:44.661 6688-7596/com.example.lenovo.skanda E/StorageUtil: error getting token java.util.concurrent.ExecutionException: com.google.firebase.internal.api.FirebaseNoSignedInUserException: Please sign in before trying to get a token.

11-04 16:16:48.528 6688-7603/com.example.lenovo.skanda E/StorageUtil: error getting token java.util.concurrent.ExecutionException: com.google.firebase.internal.api.FirebaseNoSignedInUserException: Please sign in before trying to get a token.

11-04 16:24:46.716 6688-6698/com.example.lenovo.skanda E/System: Uncaught exception thrown by finalizer

11-04 16:24:46.717 6688-6698/com.example.lenovo.skanda E/System: java.lang.NullPointerException: Attempt to invoke virtual method 'boolean com.android.org.conscrypt.SslWrapper.isClosed()' on a null object reference

        at com.android.org.conscrypt.ConscryptFileDescriptorSocket.free(ConscryptFileDescriptorSocket.java:986)

        at com.android.org.conscrypt.ConscryptFileDescriptorSocket.finalize(ConscryptFileDescriptorSocket.java:1014)

        at java.lang.Daemons$FinalizerDaemon.doFinalize(Daemons.java:252)

        at java.lang.Daemons$FinalizerDaemon.runInternal(Daemons.java:239)

        at java.lang.Daemons$Daemon.run(Daemons.java:105)

        at java.lang.Thread.run(Thread.java:764)

    Uncaught exception thrown by finalizer

    java.lang.NullPointerException: Attempt to invoke virtual method 'boolean com.android.org.conscrypt.SslWrapper.isClosed()' on a null object reference

        at com.android.org.conscrypt.ConscryptFileDescriptorSocket.free(ConscryptFileDescriptorSocket.java:986)

        at com.android.org.conscrypt.ConscryptFileDescriptorSocket.finalize(ConscryptFileDescriptorSocket.java:1014)

        at java.lang.Daemons$FinalizerDaemon.doFinalize(Daemons.java:252)

        at java.lang.Daemons$FinalizerDaemon.runInternal(Daemons.java:239)

        at java.lang.Daemons$Daemon.run(Daemons.java:105)

        at java.lang.Thread.run(Thread.java:764)

    Uncaught exception thrown by finalizer

11-04 16:24:46.718 6688-6698/com.example.lenovo.skanda E/System: java.lang.NullPointerException: Attempt to invoke virtual method 'boolean com.android.org.conscrypt.SslWrapper.isClosed()' on a null object reference

        at com.android.org.conscrypt.ConscryptFileDescriptorSocket.free(ConscryptFileDescriptorSocket.java:986)

        at com.android.org.conscrypt.ConscryptFileDescriptorSocket.finalize(ConscryptFileDescriptorSocket.java:1014)

        at java.lang.Daemons$FinalizerDaemon.doFinalize(Daemons.java:252)

        at java.lang.Daemons$FinalizerDaemon.runInternal(Daemons.java:239)

        at java.lang.Daemons$Daemon.run(Daemons.java:105)

        at java.lang.Thread.run(Thread.java:764)

    Uncaught exception thrown by finalizer

    java.lang.NullPointerException: Attempt to invoke virtual method 'boolean com.android.org.conscrypt.SslWrapper.isClosed()' on a null object reference

        at com.android.org.conscrypt.ConscryptFileDescriptorSocket.free(ConscryptFileDescriptorSocket.java:986)

        at com.android.org.conscrypt.ConscryptFileDescriptorSocket.finalize(ConscryptFileDescriptorSocket.java:1014)

        at java.lang.Daemons$FinalizerDaemon.doFinalize(Daemons.java:252)

        at java.lang.Daemons$FinalizerDaemon.runInternal(Daemons.java:239)

        at java.lang.Daemons$Daemon.run(Daemons.java:105)

        at java.lang.Thread.run(Thread.java:764)

Please help me out. Thank you in advance.

You storage security rules probably have an



allow write: if request.auth !=null



clause and here you don't seem to be using FirebaseAuth to authenticate the user.



For testing, is suggest you use signInAnonymously() method and sign the user transparently before writing to the storage.



FirebaseAuth mAuth = FirebaseAuth.getInstance(); 



Then in sign in before doing any of the stuff that you are doing



FirebaseUser user = mAuth.getCurrentUser();  

if (user != null) { 

     // do your stuff

} else { 

    signInAnonymously(); 

}



signInAnonymously() method is as follows



private void signInAnonymously(){ 

    mAuth.signInAnonymously().addOnSuccessListener(this, new OnSuccessListener<AuthResult>() {

        @Override public void onSuccess(AuthResult authResult) { 

             // do your stuff

         }

     }) .addOnFailureListener(this, new OnFailureListener() { 

            @Override public void onFailure(@NonNull Exception exception) { 

                  Log.e("TAG", "signInAnonymously:FAILURE", exception);

             }

     }); 

}



Also in the Firebase console, under authentication> signin methods, enable anonymous sign in



This may solve your problem



Alternatively if you don't want authentication for testing have the rules as:



allow write: if true;

DO THIS ONLY FOR TESTING AS THIS IS BASICALLY PUBLIC ACCESS



Then you can adjust your authentication approach according to your rules.



If your rules are not what i specified, please share your rules so that we can guide you accordingly rather than speculating and guessing