title: User does not have permission to access this object . Firebase storage android
body: <p>I am new to firebase storage. Just so I could learn it, I made a simple app that has a button and an <code>ImageView</code>. When I click on the button, an image <code>(from drawable)</code> gets displayed on the ImageView. I have also written the code for uploading the image on Firebase, but the exception message of <code>onAddFailureListener</code> gives message <strong>User does not have permission to access this object.</strong> What should I do ?</p>
  
  <pre><code>package com.example.asad.save_photo;
  
  import android.app.Activity;
  import android.graphics.Bitmap;
  import android.os.Bundle;
  import android.net.Uri;
  import android.os.Environment;
  import android.support.annotation.NonNull;
  import android.support.v7.app.AppCompatActivity;
  import android.os.Bundle;
  import android.view.View;
  import android.widget.Button;
  import android.widget.ImageView;
  import android.widget.Toast;
  
  import com.google.android.gms.tasks.OnFailureListener;
  import com.google.android.gms.tasks.OnSuccessListener;
  import com.google.firebase.storage.FirebaseStorage;
  import com.google.firebase.storage.StorageMetadata;
  import com.google.firebase.storage.StorageReference;
  import com.google.firebase.storage.UploadTask;
  
  import java.io.ByteArrayOutputStream;
  import java.io.File;
  
  public class MainActivity extends AppCompatActivity {
  
      @Override
      protected void onCreate(Bundle savedInstanceState) {
          super.onCreate(savedInstanceState);
          setContentView(R.layout.activity_main);
          FirebaseStorage storage = FirebaseStorage.getInstance();
  
          StorageReference storageRef = storage.getReferenceFromUrl("gs://savephoto-a1cc3.appspot.com");
  
          final StorageReference mountainsRef = storageRef.child("asad");
  
          Button butt = (Button) findViewById(R.id.button);
  
  
          butt.setOnClickListener(new View.OnClickListener() {
              @Override
              public void onClick(View v) {
  
                  ImageView imageView = (ImageView) findViewById(R.id.image);
                  imageView.setImageResource(R.drawable.back2);
                  //imageView.setImageResource(R.drawable.back2);
  
                  imageView.setDrawingCacheEnabled(true);
                  imageView.buildDrawingCache();
                  Bitmap bitmap = imageView.getDrawingCache();
  
  
                  ByteArrayOutputStream baos = new ByteArrayOutputStream();
                  bitmap.compress(Bitmap.CompressFormat.JPEG, 100, baos);
                  final byte[] data = baos.toByteArray();
  
                  UploadTask uploadTask = mountainsRef.putBytes(data);
                  uploadTask.addOnFailureListener(new OnFailureListener() {
                      @Override
                      public void onFailure(@NonNull Exception exception) {
                          // Handle unsuccessful uploads
                          showToast(exception.getMessage());
                      }
                  });
                          uploadTask.addOnSuccessListener(new OnSuccessListener&lt;UploadTask.TaskSnapshot&gt;() {
                      @Override
                      public void onSuccess(UploadTask.TaskSnapshot taskSnapshot) {
                          // taskSnapshot.getMetadata() contains file metadata such as size, content-type, and download URL.
                          //Uri downloadUrl = taskSnapshot.getDownloadUrl();
                          showToast("success !!!!!");
                      }
                  });
  
  
              }
          });
  
      }
  
      public void showToast(String s) {
          Toast.makeText(this,s,Toast.LENGTH_LONG).show();
      }
  }
  </code></pre>
  
  <p>Here are my firebase storage rules </p>
  
  <pre><code>service firebase.storage {
    match /b/savephoto-a1cc3.appspot.com/o {
      allow read,write;
    }
  }
  </code></pre>