android - Update and Delete documents from two different collections on single click

Question

I'm creating an app like olx, Where if you upload ad , its gets posted in two different collections, namly "My Ads" where ads of every logged in user are posted against his ID, and Explore collection Where ads are posted for all users. So if i want to update or delete ad, It should be deleted from both collections! Image Url :https://imgur.com/a/HCKfGBb

String uid= user.getUid(); SellingDetails.put("uid",uid);

            final CollectionReference reference = exploreAdDB.collection("cities/" + city + "/" + category);
            final CollectionReference myAdDocRef = myAdDB.collection("users/ads/"+uid);
            if (imageUri != null) {
                final StorageReference fileReference = mStorage.child(System.currentTimeMillis()
                        + "." + getFileExtension(imageUri));
                UploadTask uploadTask = fileReference.putFile(imageUri);
                Task<Uri> urlTask = uploadTask.continueWithTask(new Continuation<UploadTask.TaskSnapshot, Task<Uri>>() {
                    @Override
                    public Task<Uri> then(@NonNull Task<UploadTask.TaskSnapshot> task) throws Exception {
                        if (!task.isSuccessful()) {
                            throw task.getException();
                        }
                        return fileReference.getDownloadUrl();
                    }
                }).addOnCompleteListener(new OnCompleteListener<Uri>() {
                    @Override
                    public void onComplete(@NonNull Task<Uri> task) {
                        if (task.isSuccessful()) {
                            Uri downloadUri = task.getResult();
                            if(downloadUri!=null)
                                SellingDetails.put("imageUrl",downloadUri.toString());
                            reference.add(SellingDetails).addOnSuccessListener(new OnSuccessListener<DocumentReference>() {
                                @Override
                                public void onSuccess(DocumentReference documentReference) {
                                    Toast.makeText(GetLocationActivity.this, "Service Uploaded in explore db ", Toast.LENGTH_SHORT).show();
                                    pgAd.setVisibility(View.INVISIBLE);
                                    Intent intent = new Intent(GetLocationActivity.this, MainActivity.class);
                                    intent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK | Intent.FLAG_ACTIVITY_CLEAR_TASK);
                                    startActivity(intent);
                                    Toast.makeText(GetLocationActivity.this, "Ad posted Successfully", Toast.LENGTH_LONG).show();
                                }
                            }).addOnFailureListener(new OnFailureListener() {
                                @Override
                                public void onFailure(@NonNull Exception e) {
                                    Toast.makeText(GetLocationActivity.this, "Failed adding data into explore db", Toast.LENGTH_SHORT).show();
                                    pgAd.setVisibility(View.INVISIBLE);
                                }
                            });
                            myAdDocRef.add(SellingDetails).addOnSuccessListener(new OnSuccessListener<DocumentReference>() {
                                @Override
                                public void onSuccess(DocumentReference documentReference) {
                                    Toast.makeText(GetLocationActivity.this, "Data Also added to myAds db", Toast.LENGTH_SHORT).show();
                                }
                            })
                                    .addOnFailureListener(new OnFailureListener() {
                                        @Override
                                        public void onFailure(@NonNull Exception e) {
                                            Toast.makeText(GetLocationActivity.this, "Data not added into my ads", Toast.LENGTH_SHORT).show();

                                        }
                                    });


                        } else {
                            // Handle failures
                            Toast.makeText(GetLocationActivity.this, "Failed adding data", Toast.LENGTH_SHORT).show();
                        }
                    }
                });



            }

标签： androidfirebasegoogle-cloud-firestore