firebase-realtime-database

问题 Closed . This question is opinion-based. It is not currently accepting answers. Want to improve this question? Update the question so it can be answered with facts and citations by editing this post. Closed 8 days ago . Improve this question Is there any way to clear/delete all data stored using MVVM pattern? My app looks like Login Activity -> Main Activity -> fragments(each fragment: Firebase singleton +repository singleton+view model + view) All the data is stored as livedata and when I

问题 Closed . This question is opinion-based. It is not currently accepting answers. Want to improve this question? Update the question so it can be answered with facts and citations by editing this post. Closed 8 days ago . Improve this question Is there any way to clear/delete all data stored using MVVM pattern? My app looks like Login Activity -> Main Activity -> fragments(each fragment: Firebase singleton +repository singleton+view model + view) All the data is stored as livedata and when I

问题 Closed . This question is opinion-based. It is not currently accepting answers. Want to improve this question? Update the question so it can be answered with facts and citations by editing this post. Closed 8 days ago . Improve this question Is there any way to clear/delete all data stored using MVVM pattern? My app looks like Login Activity -> Main Activity -> fragments(each fragment: Firebase singleton +repository singleton+view model + view) All the data is stored as livedata and when I

问题 I am almost done fixing a huge problem I have been having the last few weeks. Long story short I'm trying to be able to send array data to my Firebase Database. I will show what the send button is currently sending when I press send: I would like the zero to be every user's id (one node for each row). The number of users and who they are is determined by a table and the child values to be the values in the array. Here is the code for the function that sends to firebase: @IBAction func

问题 I have need to access a specific child from node, i have only "available key" of the specific child not complete path. 回答1: Since you know the key of the child you're looking for, you can query on that: DatabaseReference schoolsRef = FirebaseDatabase.getInstance().getReference().child("School"); Query query = schoolsRef.orderByKey().equalTo("MZ3bW5kLJAQorgnZbYiTaOoWWSG2"); db.addValueEventListener(new ValueEventListener() { @Override public void onDataChange(@NonNull DataSnapshot dataSnapshot

问题 This is my database structure: All the children of the Request node are timestamps. For a particular timestamp, within the product node, i want to retrieve all the values of the object productName. And then arrange them so that it is composed as the body of an email. The part where i am stuck at is in fetching the data of productName. So far i've been able to fetch the data of the total in the second node. the code i'm using is this: DatabaseReference ref = FirebaseDatabase.getInstance()

问题 I'm new to swift and firebase. Done some research here, could not find solution that would solve my problem, lack of experience. Got a problem when trying to delete tableView Cell from firebase "Value of type 'Group' has no member 'ref'" func tableView(_ tableView: UITableView, commit editingStyle: UITableViewCellEditingStyle, forRowAt indexPath: IndexPath) { if editingStyle == .delete { let ref = groupsArray[indexPath.row].ref ref!.removeValue() groupsArray.remove(at: indexPath.row)

问题 I'm new to swift and firebase. Done some research here, could not find solution that would solve my problem, lack of experience. Got a problem when trying to delete tableView Cell from firebase "Value of type 'Group' has no member 'ref'" func tableView(_ tableView: UITableView, commit editingStyle: UITableViewCellEditingStyle, forRowAt indexPath: IndexPath) { if editingStyle == .delete { let ref = groupsArray[indexPath.row].ref ref!.removeValue() groupsArray.remove(at: indexPath.row)

问题 I'm new to swift and firebase. Done some research here, could not find solution that would solve my problem, lack of experience. Got a problem when trying to delete tableView Cell from firebase "Value of type 'Group' has no member 'ref'" func tableView(_ tableView: UITableView, commit editingStyle: UITableViewCellEditingStyle, forRowAt indexPath: IndexPath) { if editingStyle == .delete { let ref = groupsArray[indexPath.row].ref ref!.removeValue() groupsArray.remove(at: indexPath.row)

问题 I have a set of Firebase Functions that works as an API for an application. These Firebase Functions connect to the database with admin privileges as this: const serviceAccount = require(`./config/xxx-firebase-adminsdk.json`); admin.initializeApp({ credential: admin.credential.cert(serviceAccount), databaseURL: DATABASE_URL, }); I was able to create a custom token and I'm receiving/decoding it in the server but I cannot make use of the security rules because the Firebase function is