用户无权访问此对象.Firebase存储android

Question

我是firebase存储的新手.就这样我可以学习它,我做了一个简单的应用程序,有一个按钮和一个ImageView.当我单击按钮时,图像(from drawable)将显示在ImageView上.我还编写了在Firebase上上传图像的代码,但是onAddFailureListener给出消息的异常消息User没有访问此对象的权限.我该怎么办 ？

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<UploadTask.TaskSnapshot>() {
                    @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();
    }
}

这是我的firebase存储规则

service firebase.storage {
  match /b/savephoto-a1cc3.appspot.com/o {
    allow read,write;
  }
}

Answer 1

更新安全规则match /{allPaths=**}以指示允许在所有路径上进行公共读写访问:

service firebase.storage {
  match /b/savephoto-a1cc3.appspot.com/o {
    match /{allPaths=**} {
      // Allow access by all users
      allow read, write;
    }
  }
}

文档的" 示例规则"部分的选项卡中提供了各种默认规则.

Answer 2

按着这些次序

1. 前往“存储”

2. 选择“规则”选项卡并按如下方式编辑规则：

如果您的应用程序具有身份验证功能（登录），则使用以下命令：

rules_version = '2';
service firebase.storage {
  match /b/{bucket}/o {
    match /{allPaths=**} {
      allow read, write: if request.auth != null;
    }
  }
}

如果您的应用程序没有登录功能（任何用户都可以直接访问存储），则使用以下命令：

rules_version = '2';
service firebase.storage {
  match /b/{bucket}/o {
    match /{allPaths=**} {
      allow read, write;
    }
  }
}

Answer 3

在Firebase控制台中更改存储规则

service firebase.storage {
  match /b/{bucket}/o {
    match /{allPaths=**} {
      allow read, write: if request.auth != null;
    }
  }
}

Answer 4

转到存储->规则标签

加上这个

// Anyone can read or write to the bucket, even non-users of your app.
// Because it is shared with Google App Engine, this will also make
// files uploaded via GAE public.
service firebase.storage {
  match /b/{bucket}/o {
    match /{allPaths=**} {
      allow read, write;
    }
  }
}

Answer 5

只需转到存储-规则。输入以下规则，用您自己的存储桶名称替换存储桶名称。您可以转到存储-文件，找到存储桶名称。

它应该看起来像这样：myapplication-xxxx.appspot.com

这就是您所需要的。如果仅出于测试目的而进行身份验证，则无需启用身份验证。如果需要身份验证，则可以在以后添加。