Simply activate offline persistens as specified in the official documentation: Firebase applications work even if your app temporarily loses its network connection. You can enable disk persistence with just one line of code: FirebaseDatabase.getInstance().setPersistenceEnabled(true); solved How can i make the app work offline with Firebase database
Change your onCreate method code to : protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_my_account); email = (TextView)findViewById(R.id.email_txt); mAuth = FirebaseAuth.getInstance(); UserId = mAuth.getCurrentUser().getUid(); passwordtxt = (TextView)findViewById(R.id.pass_txt); mFirestore = FirebaseFirestore.getInstance(); mFirestore.collection(“Hospitals”).document(UserId).get().addOnSuccessListener(new OnSuccessListener<DocumentSnapshot>() { @Override public void onSuccess(DocumentSnapshot documentSnapshot) { String user_name = documentSnapshot.getString(“email”); String password = documentSnapshot.getString(“password”); email.setText(user_name); passwordtxt.setText(password); } }); } 5 solved i want … Read more
Try this: filepath.getDownloadUrl().addOnSuccessListener(new OnSuccessListener<Uri>() { @Override public void onSuccess(Uri uri) { //Do what you need to do with the URL } }).addOnFailureListener(new OnFailureListener() { @Override public void onFailure(@NonNull Exception exception) { // Handle any errors } }); 0 solved How to resolve method getDownloadUrl() [duplicate]
Check your MyFirebaseInstanceIDService class there will be a method onTokenRefresh(). You will get refreshedToken in this method like below: public void onTokenRefresh() { // Get updated InstanceID token. String refreshedToken = FirebaseInstanceId.getInstance().getToken(); // TODO: Implement this method to send any registration to your app’s servers. sendRegistrationToServer(refreshedToken); } 1 solved How to get firebase generated unique … Read more
you can count children this way. databaseRef.addListenerForSingleValueEvent(new ValueEventListener() { @Override public void onDataChange(DataSnapshot dataSnapshot) { for (DataSnapshot snap: dataSnapshot.getChildren()) { Log.e(snap.getKey(),snap.getChildrenCount() + “”); } } @Override public void onCancelled(DatabaseError databaseError) { } }); 1 solved how can i get the count of key , value pair in firebase? [closed]
I don’t see why you would like to do that, but sure. If saving to SharedPrefs is all you want, it’s quite straight forward SharedPreferences sharedPref = getPreferences(Context.MODE_PRIVATE); SharedPreferences.Editor editor = sharedPref.edit(); editor.putString(“yourMessageKey”, message); editor.commit(); And of course, to read it back you SharedPreferences sharedPref = getPreferences(Context.MODE_PRIVATE); String message = sharedPref.getString(“yourMessageKey”, defaultValue); 2 solved save … Read more
You can send the location to Firebase by using the Firebase Database and DatabaseReference classes. First you have to make sure that you have these SDK’s in build.gradle: implementation ‘com.google.firebase:firebase-storage:16.0.4’ implementation ‘com.google.firebase:firebase-database:16.0.4’ Also, make sure that you have set up your Realtime Database in the Firebase Console. It would be best if you choose the … Read more
Make only one table eq. tblUser add extra column say something like userType. If user is Doctor then insert 1 else 0 in that column. While queering back you will get userType of that user. Now you can decide which activity should be open. I have added small pseudo code please understand it carefully. pseudo … Read more
You must must use orderedByChild by the key of the date you’d like to order the children by. You can then observe the Value or ChildAdded event type of this query to retrieve the children in ascending order of date. To have the most recent first, you must reverse the objects manually client-side. Otherwise, you … Read more
First of all initiate the database instance FirebaseDatabase firebaseDatabase = FirebaseDatabase.getInstance(); get the reference of your DB where you want to perform the operation DatabaseReference dbRef = firebaseDatabase.getReference(NAME_OF_DATABASE); then use this to get all the user with the name equal to the editText text Query query = profileDbRef .orderByChild(“name”) .equalTo(edittext.getText().toString()); query.addValueEventListener(new ValueEventListener() { @Override public … Read more
If you want to do something like giving special login access like usernames and passwords, you can use Firebase realtime database to do so. You can create a node named credentials and then store every new username and password in it. Then to check if a person is logging in with correct details, you can … Read more
Assuming you have a model class for your electrician object named Electrician, to get a list of electrician objects, please use the following code: DatabaseReference rootRef = FirebaseDatabase.getInstance().getReference(); DatabaseReference electricianRef = rootRef.child(“Employee”).child(“Electrician”); ValueEventListener valueEventListener = new ValueEventListener() { @Override public void onDataChange(DataSnapshot dataSnapshot) { List<Electrician> list = new ArrayList<>(); for(DataSnapshot ds : dataSnapshot.getChildren()) { Electrician … Read more
Thanks a lot for all your comments and advice. I’ve got the answer now, and here it is: let inputArray = []; snapshot.forEach(snap => { inputArray.push(snap.val()); return false; }); solved Firebase: getting value of a child without knowing its key
Your concrete Outfit class has fields and properties that define Item: public class Outfit implements Parcelable{ private List<Item> itemList = new ArrayList<>(); … public List<Item> getItemList() This means that the Firebase SDK will try to instantiate an Item, which isn’t possible due to it being abstract. Most likely you want Firebase to instantiate the right … Read more
you should store the data in miliseconds, is not that hard, and then you can bring the data and parse it in Date , look at this snippet try{ HttpClient httpclient = new DefaultHttpClient(); HttpResponse response = httpclient.execute(new HttpGet(“https://google.com/”)); StatusLine statusLine = response.getStatusLine(); if (statusLine.getStatusCode() == HttpStatus.SC_OK) { DateFormat df = new SimpleDateFormat(“EEE, d MMM … Read more