Question

我已经解决了Firebase实时数据库上的读写规则，但仍然无法对其进行读写。

{
  "rules": {
    ".read": "true",
    ".write": "true"
  }
}

我也尝试过这个：

{
  "rules": {
    ".read": true,
    ".write": true
  }
}

Firebase存储规则：

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

Firebase存储规则正常运行，因为已上传图像并调用了onSuccessListener。

我用来在数据库上设置值的代码如下所示我已经将引用定义为：

    storageReference = FirebaseStorage.getInstance().getReference("Events_Details");
    databaseReference = FirebaseDatabase.getInstance().getReference("Events_Details");

    private void uploadUserInformationToDatabase() {
        progressDialog.show();
        if (image_uri != null) {

            //this will create a big_number.jpg and when we call .child this means we are
            //going to add something inside Events_Images Directory
            StorageReference fileReference = storageReference.child(System.currentTimeMillis() + "." + getFileExtension(image_uri));

            uploadTask = fileReference.putFile(image_uri)
                    .addOnSuccessListener(new OnSuccessListener<UploadTask.TaskSnapshot>() {
                        @Override
                        public void onSuccess(UploadTask.TaskSnapshot taskSnapshot) {

                            //Now we need to get the url of the image that you have uploaded.
                            Task<Uri> uri = taskSnapshot.getStorage().getDownloadUrl();
                            while (!uri.isComplete());
                            String url = uri.getResult().toString();
                            createUserEvent.setImageUrl(url);

                            //now we will save this object in our database
                            String uploadId = databaseReference.push().getKey();
                            databaseReference.child(uploadId)
                                             .setValue(createUserEvent);
                            progressDialog.dismiss();

                            Toast.makeText(context, "Event Created Successfully", Toast.LENGTH_SHORT).show();
                        }
                    })
                    .addOnFailureListener(new OnFailureListener() {
                        @Override
                        public void onFailure(@NonNull Exception e) {
                            Toast.makeText(context, e.getMessage(), Toast.LENGTH_SHORT).show();
                            progressDialog.dismiss();
                        }
                    });

        } else {
            progressDialog.dismiss();
            Toast.makeText(context, "No File Selected", Toast.LENGTH_SHORT).show();
        }
    }

事件创建的Toast每次都会成功显示，并且图像也会上载到存储中，但是该对象不会保存在实时数据库中。而且CreateUserEvent只是一个类，我想将其对象与要上传到存储的图像一起保存到实时数据库中。映像始终可以成功上传到Firebase存储上，并且在调用onSuccess函数并在onSuccess函数内部后，我已经为对象编写了代码以保存在实时数据库中，但这不起作用。请帮助我解决它，我已经浪费了2天，但无法解决此问题。

Answer 1

好吧...我已经尝试过您的代码了。下面是修改后的函数：

databaseReference = FirebaseDatabase.getInstance().getReference();

private void uploadUserInformationToDatabase() {
        progressDialog.show();

        if (image_uri != null) {

            //this will create a big_number.jpg and when we call .child this means we are
            //going to add something inside Events_Images Directory
            StorageReference fileReference = storageReference.child(System.currentTimeMillis() + "." + getFileExtension(image_uri));

            //now we will store our image file in firebase and check for success and failure events
            //And we store the refrence of current process in this uploadtask varriable which helps us
            //when user clicks on upload button multiple time, so when he clicks one time uploadTask will
            //take  the reference and when the upload runnig and the user clicks the upload button another
            //time then we put a check if uploadTask is null or not. it is null then this means no task is
            //running else we don't upload. This check you put above in upload onlicklisterner.


            uploadTask = fileReference.putFile(image_uri)
                    .addOnSuccessListener(new OnSuccessListener<UploadTask.TaskSnapshot>() {
                        @Override
                        public void onSuccess(UploadTask.TaskSnapshot taskSnapshot) {

//                            lets create the object with name and url of the image and save this object into our database.
//                            String name_of_event = file_name.getText().toString().trim();
//                            String url_of_image = taskSnapshot.getMetadata().getReference().getDownloadUrl().toString();
//                            Upload upload = new Upload(name_of_event, url_of_image);



                            //Now you just need to get the url of the image that you have uploaded.

                            Task<Uri> uri = taskSnapshot.getStorage().getDownloadUrl();
                            while (!uri.isComplete()) ;
                            String url = uri.getResult().toString();
                            createUserEvent.setImageUrl(url);

                            //now we will save this object in our database
                            String uploadId = databaseReference.push().getKey();
                            Log.d(TAG, "onSuccess: Going To Save Object To Firebase");
                            Log.d(TAG, "onSuccess: UPLOAD ID : "+uploadId);

                            databaseReference.child("Event Details").child(uploadId).setValue(createUserEvent).addOnCompleteListener(new OnCompleteListener<Void>() {
                                @Override
                                public void onComplete(@NonNull Task<Void> task) {
                                    Toast.makeText(context, "Data uploaded successfully", Toast.LENGTH_SHORT).show();
                                    progressDialog.dismiss();
                                }
                            }).addOnFailureListener(new OnFailureListener() {
                                @Override
                                public void onFailure(@NonNull Exception e) {
                                    Toast.makeText(context, "Failed to upload data", Toast.LENGTH_SHORT).show();
                                    progressDialog.dismiss();
                                }
                            });
                        }
                    });
        } else {
            progressDialog.dismiss();
            Toast.makeText(context, "No File Selected", Toast.LENGTH_SHORT).show();
        }
    }

上传到数据库时，我获得了成功。请立即检查您的数据库。

Answer 2

StorageReference filepath=storageReference.child("Blogimage").child(System.currentTimeMillis()+ "." +getFileEXt(imageuri)); //uploadTask=filepath.putFile(imageuri);

               filepath.putFile(imageuri).addOnSuccessListener(new OnSuccessListener<UploadTask.TaskSnapshot>() {
                   @Override
                   public void onSuccess(UploadTask.TaskSnapshot taskSnapshot) {
                     // String downlod = taskSnapshot.getMetadata().getReference().getDownloadUrl().toString();
                       if (taskSnapshot.getMetadata() != null) {
                           if (taskSnapshot.getMetadata().getReference() != null) {
                               Task<Uri> result = taskSnapshot.getStorage().getDownloadUrl();
                               result.addOnSuccessListener(new OnSuccessListener<Uri>() {
                                   @Override
                                   public void onSuccess(Uri uri) {
                                       String imageUrl = uri.toString();
                                       DatabaseReference newpost=databaseReference.push();
                                       Map<String , String > profile =new HashMap<>();
                                       profile.put("name",name);
                                       profile.put("prof",prof);
                                       profile.put("location",location);
                                       profile.put("email",mail);
                                       profile.put("web",web);
                                       profile.put("uid",user.getUid());
                                       profile.put("url",imageUrl);

                                       allUserMember.setName(name);
                                       allUserMember.setUid(auth.getUid());

                                       allUserMember.setProf(prof);
                                       allUserMember.setLocation(location);

                                       allUserMember.setUrl(imageUrl);
                                       newpost.setValue(profile);
                                       newpost.child(user.getUid()).setValue(allUserMember);
                                       documentReference.set(profile).addOnSuccessListener(new OnSuccessListener<Void>() {
                                           @Override
                                           public void onSuccess(Void unused) {

                                               Snackbar.make(findViewById(android.R.id.content),"Image uplode",Snackbar.LENGTH_LONG).show();
                                               pd.dismiss();
                                               Toast.makeText(CreateProfile1.this, "it work", Toast.LENGTH_SHORT).show();
                                           }
                                       });
                                       //createNewPost(imageUrl);
                                   }
                               });
                           }
                       }

Firebase的实时数据库无法从android studio工作，我无法在上面上传？

2 个答案: