Develop Reference

User profile isn't working. Only e-mail is showing

I was trying to show user's profile in an activity. But when I try to do this, it only shows email. Name, photo, phone number is not showing. How can I show all the field of current user?I
I tried
getCurrentuser()
to get current user info and set them in the field. But it is not showing all the field.
SignUp.java
private EditText signUpnameId, signUpemailId,signUppasswordId,signUpPhoneId;
private Button signup_btn;
private TextView signUpSignIn;
private FirebaseAuth mAuth;
private ProgressBar progressBar;
private ImageView signUpimageView;
private static final String IMAGE_DIRECTORY = "/demonuts";
private int GALLERY = 1, CAMERA = 2;
private DatabaseReference mDatabase;
private Uri imageUri;
private String imageurl;
private static final int IMAGE_REQUEST = 1;
private StorageReference storageReference,imagename;
private StorageTask uploadTask;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_sign_up);
this.setTitle("Sign Up Here");
// Initialize Firebase Auth
mAuth = FirebaseAuth.getInstance();
progressBar = findViewById(R.id.progressbarId);
signUpnameId = findViewById(R.id.signUpnameId);
signUpemailId = findViewById(R.id.signUpemailId);
signup_btn = findViewById(R.id.signup_btn);
signUpSignIn = findViewById(R.id.signUpSignIn);
signUppasswordId = findViewById(R.id.signUppasswordId);
signUpimageView =findViewById(R.id.signUpImageId);
signUpPhoneId = findViewById(R.id.signUpphoneId);
mDatabase = FirebaseDatabase.getInstance().getReference("Users");
storageReference = FirebaseStorage.getInstance().getReference("usersImage");
signUpSignIn.setOnClickListener(this);
signup_btn.setOnClickListener(this);
signUpimageView.setOnClickListener(this);
}
#Override
public void onClick(View v) {
switch (v.getId()){
case R.id.signup_btn:
userRegister();
break;
case R.id.signUpSignIn:
Intent intent = new Intent(getApplicationContext(),LogIn.class);
startActivity(intent);
break;
case R.id.signUpImageId:
if(uploadTask != null && uploadTask.isInProgress())
{
Toast.makeText(getApplicationContext(),"Upload in process.",Toast.LENGTH_SHORT).show();
}else {
showPictureDialog();
}
}
}
private void showPictureDialog(){
AlertDialog.Builder pictureDialog = new AlertDialog.Builder(this);
pictureDialog.setTitle("Select Action");
String[] pictureDialogItems = {
"Select photo from gallery" };
pictureDialog.setItems(pictureDialogItems,
new DialogInterface.OnClickListener() {
#Override
public void onClick(DialogInterface dialog, int which) {
switch (which) {
case 0:
choosePhotoFromGallary();
break;
}
}
});
pictureDialog.show();
}
public void choosePhotoFromGallary() {
Intent galleryIntent = new Intent();
galleryIntent.setType("image/*");
galleryIntent.setAction(Intent.ACTION_GET_CONTENT);
startActivityForResult(galleryIntent, GALLERY);
}
#Override
public void onActivityResult(int requestCode, int resultCode, Intent data) {
super.onActivityResult(requestCode, resultCode, data);
if (resultCode == this.RESULT_CANCELED) {
return;
}
if (requestCode == GALLERY && data != null && data.getData() != null ) {
imageUri = data.getData();
try {
Picasso.get().load(imageUri).into(signUpimageView);
Bitmap bitmap = MediaStore.Images.Media.getBitmap(this.getContentResolver(), imageUri);
} catch (IOException e) {
e.printStackTrace();
Toast.makeText(getApplicationContext(), "Failed!", Toast.LENGTH_SHORT).show();
}
}
}
private String getFileExtension(Uri uri){
ContentResolver contentResolver = getContentResolver();
MimeTypeMap mime = MimeTypeMap.getSingleton();
return mime.getExtensionFromMimeType(contentResolver.getType(uri));
}
private void userRegister() {
final String name = signUpnameId.getText().toString();
final String email = signUpemailId.getText().toString().trim();
final String password = signUppasswordId.getText().toString().trim();
final String phoneNum = signUpPhoneId.getText().toString();
if(email.isEmpty())
{
signUpemailId.setError("Enter an email address");
signUpemailId.requestFocus();
return;
}
if(!android.util.Patterns.EMAIL_ADDRESS.matcher(email).matches())
{
signUpemailId.setError("Enter a valid email address");
signUpemailId.requestFocus();
return;
}
//checking the validity of the password
if(password.isEmpty())
{
signUppasswordId.setError("Enter a password");
signUppasswordId.requestFocus();
return;
}
if(password.length() < 6)
{
signUppasswordId.setError("Password is too short. Password Should be more than 6");
signUppasswordId.requestFocus();
return;
}
//checking the validity of the password
if(name.isEmpty())
{
signUpnameId.setError("Enter a Name");
signUpnameId.requestFocus();
return;
}
if(imageUri == null)
{
signUpSignIn.setError("Please select an image first");
}
progressBar.setVisibility(View.VISIBLE);
mAuth.createUserWithEmailAndPassword(email,password).addOnCompleteListener(new OnCompleteListener<AuthResult>() {
#Override
public void onComplete(#NonNull Task<AuthResult> task) {
progressBar.setVisibility(View.GONE);
if(task.isSuccessful())
{
mAuth.getCurrentUser().sendEmailVerification().addOnCompleteListener(new OnCompleteListener<Void>() {
#Override
public void onComplete(#NonNull Task<Void> task) {
if(task.isSuccessful())
{
final StorageReference Imagename = storageReference.child("image"+imageUri.getLastPathSegment());
imageurl = imageUri.toString();
Imagename.putFile(imageUri)
.addOnSuccessListener(new OnSuccessListener<UploadTask.TaskSnapshot>() {
#Override
public void onSuccess(UploadTask.TaskSnapshot taskSnapshot) {
Toast.makeText(getApplicationContext(),"Place added Done!",Toast.LENGTH_SHORT).show();
Task<Uri> uriTask = taskSnapshot.getMetadata().getReference().getDownloadUrl();
while(!uriTask.isSuccessful());
Uri downloadUrl = uriTask.getResult();
UserInfo userInfo = new UserInfo(name,email,phoneNum,downloadUrl.toString());
String uploadId = mDatabase.push().getKey();
mDatabase.child(uploadId).setValue(userInfo);
}
})
.addOnFailureListener(new OnFailureListener() {
#Override
public void onFailure(#NonNull Exception exception) {
// Handle unsuccessful uploads
// ...
}
});
}
else
{
Toast.makeText(getApplicationContext(),"Error: "+task.getException().getMessage(),Toast.LENGTH_SHORT).show();
}
}
});
}
else
{
if(task.getException() instanceof FirebaseAuthUserCollisionException)
{
Toast.makeText(getApplicationContext(),"Already registered",Toast.LENGTH_SHORT).show();
}
else
{
Toast.makeText(getApplicationContext(),"Eroor: "+ task.getException(),Toast.LENGTH_SHORT).show();
}
}
}
});
}
Profile.Java
private ImageView profileImageview;
private TextView profilenameview,profileemailview, profilephoneview;
private Button profilesignoutbtn;
private FirebaseUser firebaseUser;
private FirebaseAuth mAuth;
private FirebaseDatabase firebaseDatabase;
private ProgressBar progressBar;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_profile);
// Initialize Firebase Auth
mAuth = FirebaseAuth.getInstance();
final FirebaseUser user = mAuth.getCurrentUser();
firebaseDatabase = FirebaseDatabase.getInstance();
profileImageview = findViewById(R.id.profileImageView);
profileemailview = findViewById(R.id.profileemailview);
profilenameview = findViewById(R.id.profilenameview);
profilephoneview = findViewById(R.id.profilephoneview);
progressBar = findViewById(R.id.progressbarproId);
profilesignoutbtn = findViewById(R.id.profilesignout_btn);
profilesignoutbtn.setOnClickListener(this);
// Initialize Firebase Auth
DatabaseReference databaseReference = FirebaseDatabase.getInstance().getReference("Image");
mAuth = FirebaseAuth.getInstance();
String userKey = user.getUid();
databaseReference.child("Profile");
databaseReference.child(userKey);
databaseReference.addValueEventListener(new ValueEventListener() {
#Override
public void onDataChange(DataSnapshot dataSnapshot) {
String userName = dataSnapshot.child("users").getValue(String.class);
profilenameview.setText(user.getDisplayName());
profileemailview.setText(user.getEmail());
Picasso.get().load(user.getPhotoUrl()).into(profileImageview);
}
#Override
public void onCancelled(DatabaseError databaseError) {
}
});
}
UserInfo.java
public class UserInfo{
String name,email,phoneNum,imageurl;
public UserInfo(String name, String email, String phoneNum, String imageurl) {
this.name = name;
this.email = email;
this.phoneNum = phoneNum;
this.imageurl = imageurl;
}
public UserInfo(String name, String email, String phoneNum, Uri uri) {
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public String getEmail() {
return email;
}
public void setEmail(String email) {
this.email = email;
}
public String getPhoneNum() {
return phoneNum;
}
public void setPhoneNum(String phoneNum) {
this.phoneNum = phoneNum;
}
public String getImageurl() {
return imageurl;
}
public void setImageurl(String imageurl) {
this.imageurl = imageurl;
}
}
Android studio is showing that
sendEmailVerification()
may produce NullPointerException. Besides
getReference()
and
getDownloadUrl()
also may produce NullPOinterException.How can I solve every issues and correctly get the expected output? Here is a screenshot of profile.

You aren't actually defining the name of the user ,
Use this in onCompleteListener method of firebase auth
new UserProfileChangeRequest.Builder()
.setDisplayName(nameUser)
.build();

Add new data under child with existing data using ModelClass

I need some help with my app.
I have an Activity where I add user info like name, birthday and add an profileimage for the user.
And when I add the profileimage I get this in my firebase:
And that is working fine. I am using ModelClass, and I know that when I use setValue it deletes the the existing data under that child and saves the new data. But is there a way to just add the new data and still not delete the existing data with ModelClass? I know it works with Hashmap, but I want to use ModelClass.
Here is my Activity for saving info:
public class UserInfoActivity extends AppCompatActivity implements DatePickerDialog.OnDateSetListener {
private CircleImageView civuserinfoprofileimage;
private EditText etuserinfofirstname, etuserinfolastname;
private Button btnbirthdaypicker, btnsaveuserinfo;
private TextView tvbirthday;
private FirebaseAuth mAuth;
private DatabaseReference UsersRef;
private StorageReference UserProfileImageRef;
private ProgressDialog loadingBar;
String currentUserID;
final static int Gallery_Pick = 1;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_user_info);
mAuth = FirebaseAuth.getInstance();
currentUserID = mAuth.getCurrentUser().getUid();
UsersRef = FirebaseDatabase.getInstance().getReference().child("Users").child(currentUserID);
UserProfileImageRef = FirebaseStorage.getInstance().getReference().child("profilepictures");
loadingBar = new ProgressDialog(this);
civuserinfoprofileimage = (CircleImageView)findViewById(R.id.civ_userinfoprofileimage);
etuserinfofirstname = (EditText)findViewById(R.id.et_userinfofirstname);
etuserinfolastname = (EditText)findViewById(R.id.et_userinfolastname);
btnbirthdaypicker = (Button)findViewById(R.id.btn_birthdaypicker);
tvbirthday = (TextView) findViewById(R.id.tv_birthday);
btnsaveuserinfo = (Button)findViewById(R.id.btn_saveuserinfo);
btnsaveuserinfo.setVisibility(View.INVISIBLE);
btnbirthdaypicker.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View view) {
DialogFragment datePicker = new DatePickerFragment();
datePicker.show(getSupportFragmentManager(), "date picker");
}
});
btnsaveuserinfo.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View view) {
SaveAccountSetupInformation();
}
});
civuserinfoprofileimage.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View view) {
Intent galleryIntent = new Intent();
galleryIntent.setAction(Intent.ACTION_GET_CONTENT);
galleryIntent.setType("image/*");
startActivityForResult(galleryIntent, Gallery_Pick);
}
});
}
#Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
super.onActivityResult(requestCode, resultCode, data);
if(requestCode == Gallery_Pick && resultCode == RESULT_OK && data != null) {
Uri ImageUri = data.getData();
CropImage.activity()
.setGuidelines(CropImageView.Guidelines.ON)
.setAspectRatio(1,1)
.start(this);
}
if(requestCode == CropImage.CROP_IMAGE_ACTIVITY_REQUEST_CODE)
{
CropImage.ActivityResult result = CropImage.getActivityResult(data);
if (resultCode == RESULT_OK) {
loadingBar.setTitle("Profile Image");
loadingBar.setMessage("Saving profileimage");
loadingBar.show();
loadingBar.setCanceledOnTouchOutside(true);
Uri resultUri = result.getUri();
StorageReference filePath = UserProfileImageRef.child(currentUserID + ".jpg");
filePath.putFile(resultUri).addOnCompleteListener(new OnCompleteListener<UploadTask.TaskSnapshot>() {
#Override
public void onComplete(#NonNull Task<UploadTask.TaskSnapshot> task) {
if(task.isSuccessful()) {
btnsaveuserinfo.setVisibility(View.VISIBLE);
Task<Uri> result = task.getResult().getMetadata().getReference().getDownloadUrl();
result.addOnSuccessListener(new OnSuccessListener<Uri>() {
#Override
public void onSuccess(Uri uri) {
final String downloadUrl = uri.toString();
UsersRef.child("profileimage").setValue(downloadUrl)
.addOnCompleteListener(new OnCompleteListener<Void>() {
#Override
public void onComplete(#NonNull Task<Void> task) {
if (task.isSuccessful()) {
Intent selfIntent = new Intent(UserInfoActivity.this, UserInfoActivity.class);
selfIntent.setFlags(Intent.FLAG_ACTIVITY_REORDER_TO_FRONT);
startActivity(selfIntent);
Toast.makeText(UserInfoActivity.this, "Pofileimage saved", Toast.LENGTH_SHORT).show();
loadingBar.dismiss();
} else {
String message = task.getException().getMessage();
Toast.makeText(UserInfoActivity.this, "Error: " + message, Toast.LENGTH_SHORT).show();
loadingBar.dismiss();
}
}
});
}
});
}
}
});
}
else {
Toast.makeText(UserInfoActivity.this, "Error: Image can not be cropped. Try Again.", Toast.LENGTH_SHORT).show();
loadingBar.dismiss();
}
}
}
private void SaveAccountSetupInformation() {
String firstname = etuserinfofirstname.getText().toString();
String lastname = etuserinfolastname.getText().toString();
String birthday = tvbirthday.getText().toString();
if (TextUtils.isEmpty(firstname) || TextUtils.isEmpty(lastname) || TextUtils.isEmpty(birthday)) {
Toast.makeText(this, "Please enter information..", Toast.LENGTH_SHORT).show();
} else {
FirebaseUser firebaseUser = mAuth.getCurrentUser();
String userid = firebaseUser.getUid();
User user = new User(userid, firstname, lastname, birthday);
UsersRef.setValue(user);
}
}
ModelClass:
public class User {
private String id;
private String lastname;
private String firstname;
private String birthday;
private String profileimage;
public User(String id, String lastname, String firstname, String birthday, String profileimage) {
this.id = id;
this.lastname = lastname;
this.firstname = firstname;
this.birthday = birthday;
this.profileimage = profileimage;
}
public User() {
}
public String getId() {
return id;
}
public void setId(String id) {
this.id = id;
}
public String getLastname() {
return lastname;
}
public void setLastname(String lastname) {
this.lastname = lastname;
}
public String getFirstname() {
return firstname;
}
public void setFirstname(String firstname) {
this.firstname = firstname;
}
public String getBirthday() {
return birthday;
}
public void setBirthday(String birthday) {
this.birthday = birthday;
}
public String getProfileimage() {
return profileimage;
}
public void setProfileimage(String profileimage) {
this.profileimage = profileimage;
}

As far as I understand you're asking about this code:
User user = new User(userid, firstname, lastname, birthday);
UsersRef.setValue(user);
Please read about how to create a minimal, complete, verifiable example, as it's harder for us to isolate that code than it is/should be for you.
When you call setValue() on a location, any existing data at that location is replaced. To only update part of a location, you have to call updateChildren() on it. But as you found, you can't use updateChildren() with a Java class, it only takes a Map.
If you want to update just one child, you can use setValue on a DatabaseReference to that specific child. For example:
UsersRef.child("profileimage").setValue("Value of profile image");
If you want to update multiple-but-not-all child nodes, you'll need to use updateChildren() with a Map. Java 9 and 10 seems to have some nice syntactic sugar to make that more readable: https://stackoverflow.com/a/6802502

progress dialog did not dismiss and I cant update user profile

First I retrieve user info from database, then I want to update the data, but when I click the "save" textview (which I already setOnClick), the progress dialog shows out, did not dismiss and the whole program just keep loading there
public class UserProfile extends Fragment {
private DatabaseReference databaseReference;
private StorageReference storageReference;
private String link;
private StorageTask mUploadTask;
private Uri imageUri;
private ProgressDialog progressDialog;
private final static int PICK_IMAGE_REQUEST = 1;
private CircleImageView circleImageView;
private EditText emailText,nameText,passwordText,confirmPasswordText,mobileText,addressText;
private TextView save;
private List<String> userList;
#Nullable
#Override
public View onCreateView(#NonNull LayoutInflater inflater, #Nullable final ViewGroup container, #Nullable Bundle savedInstanceState) {
final View view = inflater.inflate(R.layout.user_profile, container, false);
getActivity().getWindow().setSoftInputMode(WindowManager.LayoutParams.SOFT_INPUT_ADJUST_NOTHING);
emailText = (EditText) view.findViewById(R.id.input_email);
nameText = (EditText) view.findViewById(R.id.input_name);
passwordText = (EditText) view.findViewById(R.id.input_password);
confirmPasswordText = (EditText) view.findViewById(R.id.input_reEnterPassword);
mobileText = (EditText) view.findViewById(R.id.input_mobile);
addressText = (EditText) view.findViewById(R.id.input_address);
circleImageView = (CircleImageView) view.findViewById(R.id.circleImageView);
save = (TextView) view.findViewById(R.id.Save);
progressDialog = new ProgressDialog(getContext());
emailText.setEnabled(false);
userList = new ArrayList<>();
String Email = getArguments().getString("Email");
String email = Email.replace(".", ",");
databaseReference = FirebaseDatabase.getInstance().getReference("User").child(email);
storageReference = FirebaseStorage.getInstance().getReference("User");
databaseReference.addListenerForSingleValueEvent(new ValueEventListener() {
#Override
public void onDataChange(#NonNull DataSnapshot dataSnapshot) {
if (dataSnapshot.exists()) {
for (DataSnapshot snapshot : dataSnapshot.getChildren()) {
userList.add(String.valueOf(snapshot.getValue()));
}
emailText.setText(userList.get(2));
nameText.setText(userList.get(6));
passwordText.setText(userList.get(4));
confirmPasswordText.setText(userList.get(1));
mobileText.setText(userList.get(5));
addressText.setText(userList.get(0));
Picasso.get().load(userList.get(3)).into(circleImageView);
return;
}
if (!dataSnapshot.exists()) {
Toast.makeText(getActivity(), "Data not exist!!", Toast.LENGTH_LONG).show();
}
}
#Override
public void onCancelled(#NonNull DatabaseError databaseError) {
return;
}
});
circleImageView.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
if (ContextCompat.checkSelfPermission(getContext(),
Manifest.permission.READ_EXTERNAL_STORAGE)
!= PackageManager.PERMISSION_GRANTED) {
// Permission is not granted
// Should we show an explanation?
if (ActivityCompat.shouldShowRequestPermissionRationale(getActivity(),
Manifest.permission.READ_EXTERNAL_STORAGE)) {
// Show an explanation to the user *asynchronously* -- don't block
// this thread waiting for the user's response! After the user
// sees the explanation, try again to request the permission.
} else {
// No explanation needed; request the permission
ActivityCompat.requestPermissions(getActivity(),
new String[]{Manifest.permission.READ_EXTERNAL_STORAGE},
PICK_IMAGE_REQUEST);
// MY_PERMISSIONS_REQUEST_READ_CONTACTS is an
// app-defined int constant. The callback method gets the
// result of the request.
}
} else {
selectImage();
}
}
});
save.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
UpdateAccount();
}
});
return view;
}
public void selectImage() {
Intent photoPickerIntent = new Intent();
photoPickerIntent.setType("image/*");
photoPickerIntent.setAction(Intent.ACTION_PICK);
startActivityForResult(photoPickerIntent, PICK_IMAGE_REQUEST);
}
private String getFileExtension(Uri uri) {
ContentResolver cR = getActivity().getContentResolver();
MimeTypeMap mime = MimeTypeMap.getSingleton();
return mime.getExtensionFromMimeType(cR.getType(uri));
}
#Override
public void onActivityResult(int requestCode, int resultCode, Intent data) {
super.onActivityResult(requestCode, resultCode, data);
if (requestCode == PICK_IMAGE_REQUEST && resultCode == RESULT_OK && data != null && data.getData() != null) {
imageUri = data.getData();
Picasso.get().load(imageUri).into(circleImageView);
}
}
public void UpdateAccount() {
final String email = emailText.getText().toString();
final String username = nameText.getText().toString();
final String pass = passwordText.getText().toString();
final String phone = mobileText.getText().toString();
final String comfirmpass = confirmPasswordText.getText().toString();
final String address = addressText.getText().toString();
if ((TextUtils.isEmpty(username))) {
nameText.setError("Username is required");
nameText.requestFocus();
return;
}
if ((TextUtils.isEmpty(pass))) {
passwordText.setError("Password is required");
passwordText.requestFocus();
return;
}
if ((TextUtils.isEmpty(phone))) {
mobileText.setError("Phone number is required");
mobileText.requestFocus();
return;
}
if ((TextUtils.isEmpty(comfirmpass))) {
confirmPasswordText.setError("Confirm password is required");
confirmPasswordText.requestFocus();
return;
}
if ((TextUtils.isEmpty(address))) {
addressText.setError("address is required");
addressText.requestFocus();
return;
}
progressDialog.setMessage("Updating your account");
progressDialog.show();
UpdateUser(email, username, pass, phone, comfirmpass, address);
}
public void UpdateUser(final String UserEmail, final String Username, final String Password,
final String PhoneNumber, final String confirmPassword, final String Address) {
//first we encode the email into "," to enable check the firebase database
final String email = UserEmail.replace(".", ",");
databaseReference = FirebaseDatabase.getInstance().getReference("User").child(email);
Log.d("UserEmail", databaseReference.toString());
databaseReference.addListenerForSingleValueEvent(new ValueEventListener() {
#Override
public void onDataChange(#NonNull final DataSnapshot dataSnapshot) {
if (!dataSnapshot.exists()) {
if (imageUri != null) {
final StorageReference fileReference = storageReference.child(System.currentTimeMillis()
+ "." + getFileExtension(imageUri));
mUploadTask = fileReference.putFile(imageUri)
.addOnSuccessListener(new OnSuccessListener<UploadTask.TaskSnapshot>() {
#Override
public void onSuccess(UploadTask.TaskSnapshot taskSnapshot) {
fileReference.getDownloadUrl().addOnSuccessListener(new OnSuccessListener<Uri>() {
#Override
public void onSuccess(Uri downloadUri) {
link = downloadUri.toString();
final User user = new User(email, Username, Password, PhoneNumber, confirmPassword,
Address, link);
databaseReference.setValue(user);
Toasty.success(getActivity().getApplicationContext(), "Update Successful!!", Toast.LENGTH_SHORT, true).show();
progressDialog.dismiss();
}
});
}
});
}
}
}
#Override
public void onCancelled(#NonNull DatabaseError databaseError) {
return;
}
});
}
#Override
public void onViewCreated(#NonNull View view, #Nullable Bundle savedInstanceState) {
super.onViewCreated(view, savedInstanceState);
}
}
I had removed some codes, if you need more info please leave a comment below

Null Pointer Exception as notification was added

I don't get the error when i run the app everything works fine, but when i click on the send message button the app crashes but the message still gets sent. below is my code for the chatActivity and logcat message
package com.paddi.paddi.paddi;
public class ChatActivity extends AppCompatActivity
{
private String messageReceiverId;
private String messageReceiverName;
// private Toolbar ChatToolBar;
private TextView userNameTitle;
private TextView userLastSeen;
private CircleImageView userChatProfileImage;
private ImageButton SendMessageButton;
// private ImageButton SelectImageButton;
private EditText InputMessageText;
FirebaseUser fuser;
DatabaseReference rootRef;
private FirebaseAuth mAuth;
private String messageSenderId;
private RecyclerView userMessagesList;
private final List<Messages> messageList = new ArrayList<>();
private LinearLayoutManager linearLayoutManager;
private MessageAdapter messageAdapter;
private static int Gallery_Pick = 1;
private StorageReference MessageImageStorageRef;
private ProgressDialog loadingBar;
private String downloadImageUrl;
Intent intent;
ValueEventListener seenListener;
String userid;
APIServiceFragment apiService;
boolean notify = false;
#Override
protected void onCreate(Bundle savedInstanceState)
{
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_chat);
rootRef = FirebaseDatabase.getInstance().getReference();
mAuth = FirebaseAuth.getInstance();
messageSenderId = mAuth.getCurrentUser().getUid();
messageReceiverId = getIntent().getExtras().get("visit_user_id").toString();
messageReceiverName = getIntent().getExtras().get("user_name").toString();
MessageImageStorageRef = FirebaseStorage.getInstance().getReference().child("Messages_Pictures");
apiService = Client.getClient("https://fcm.googleapis.com/").create(APIServiceFragment.class);
// ChatToolBar = (Toolbar) findViewById(R.id.chat_bar_layout);
// setSupportActionBar(ChatToolBar);
loadingBar = new ProgressDialog(this);
ActionBar actionBar = getSupportActionBar();
actionBar.setDisplayHomeAsUpEnabled(true);
actionBar.setDisplayShowCustomEnabled(true);
LayoutInflater layoutInflater = (LayoutInflater)
this.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
View action_bar_view = layoutInflater.inflate(R.layout.chat_custom_bar, null);
actionBar.setCustomView(action_bar_view);
userNameTitle = (TextView) findViewById(R.id.custom_profile_name);
userLastSeen = (TextView) findViewById(R.id.custom_user_last_seen);
userChatProfileImage = (CircleImageView) findViewById(R.id.custom_profile_image_last_seen);
SendMessageButton = (ImageButton) findViewById(R.id.send_message_btn);
// SelectImageButton = (ImageButton) findViewById(R.id.select_image);
InputMessageText = (EditText) findViewById(R.id.input_message);
messageAdapter = new MessageAdapter(messageList);
userMessagesList = (RecyclerView) findViewById(R.id.messages_list_of_users);
linearLayoutManager = new LinearLayoutManager(this);
userMessagesList.setHasFixedSize(true);
userMessagesList.setLayoutManager(linearLayoutManager);
userMessagesList.setAdapter(messageAdapter);
FetchMessages();
userNameTitle.setText(messageReceiverName);
rootRef.child("Users").child(messageReceiverId).addValueEventListener(new ValueEventListener()
{
#Override
public void onDataChange(DataSnapshot dataSnapshot)
{
final String online = dataSnapshot.child("online").getValue().toString();
final String userThumb = dataSnapshot.child("user_thumb_image").getValue().toString();
Picasso.with(ChatActivity.this).load(userThumb).fit().centerInside().networkPolicy(NetworkPolicy.OFFLINE).placeholder(R.drawable.default_profile)
.into(userChatProfileImage, new Callback() {
#Override
public void onSuccess()
{
}
#Override
public void onError()
{
Picasso.with(ChatActivity.this).load(userThumb).fit().centerInside().placeholder(R.drawable.default_profile).into(userChatProfileImage);
}
});
if (online != null) {
if (online.equals("true"))
{
userLastSeen.setText("online");
}
else
{
LastSeenTime getTime = new LastSeenTime();
long last_seen = Long.parseLong(online);
//problem with last seen time here
String lastSeenDisplayTime = getTime.getTimeAgo(last_seen, getApplicationContext()).toString();
userLastSeen.setText(lastSeenDisplayTime);
}
}
}
#Override
public void onCancelled(DatabaseError databaseError)
{
}
});
SendMessageButton.setOnClickListener(new View.OnClickListener()
{
#Override
public void onClick(View view)
{
SendMessage();
}
});
// SelectImageButton.setOnClickListener(new View.OnClickListener() {
// #Override
// public void onClick(View v)
// {
// Intent galleryIntent = new Intent();
// galleryIntent.setAction(Intent.ACTION_GET_CONTENT);
// galleryIntent.setType("image/*");
// startActivityForResult(galleryIntent, Gallery_Pick);
//}
//});
}
#Override
protected void onActivityResult(int requestCode, int resultCode, Intent data)
{
super.onActivityResult(requestCode, resultCode, data);
if(requestCode==Gallery_Pick && resultCode==RESULT_OK &&data!=null)
{
loadingBar.setTitle("Sending Image");
loadingBar.setMessage("Please Wait");
loadingBar.show();
Uri ImageUri = data.getData();
final String message_sender_ref = "Messages/" + messageSenderId + "/" + messageReceiverId;
final String message_receiver_ref = "Messages/" + messageReceiverId + "/" + messageSenderId;
DatabaseReference user_message_key = rootRef.child("Messages").child(messageSenderId)
.child(messageReceiverId).push();
final String message_push_id = user_message_key.getKey();
final StorageReference filePath = MessageImageStorageRef.child(message_push_id + ".jpg");
final StorageTask<UploadTask.TaskSnapshot> taskSnapshotStorageTask = filePath.putFile(ImageUri).addOnCompleteListener(new OnCompleteListener<UploadTask.TaskSnapshot>() {
#Override
public void onComplete(#NonNull Task<UploadTask.TaskSnapshot> task) {
if (task.isSuccessful()) {
downloadImageUrl = filePath.getDownloadUrl().toString();
// return filePath.getDownloadUrl();
Map messageTextBody = new HashMap();
messageTextBody.put("message", downloadImageUrl);
messageTextBody.put("isseen", true);
messageTextBody.put("type", "image");
messageTextBody.put("time", ServerValue.TIMESTAMP);
messageTextBody.put("from", messageSenderId);
messageTextBody.put("to", messageReceiverId);
Map messageBodyDetails = new HashMap();
messageBodyDetails.put(message_sender_ref + "/" + message_push_id, messageTextBody);
messageBodyDetails.put(message_receiver_ref + "/" + message_push_id, messageTextBody);
rootRef.updateChildren(messageBodyDetails, new DatabaseReference.CompletionListener() {
#Override
public void onComplete(DatabaseError databaseError, DatabaseReference databaseReference) {
if (databaseError != null) {
Log.d("Chat_Log", databaseError.getMessage().toString());
}
InputMessageText.setText("");
loadingBar.dismiss();
}
});
Toast.makeText(ChatActivity.this, "Picture Sent Successfully.", Toast.LENGTH_SHORT).show();
loadingBar.dismiss();
} else {
Toast.makeText(ChatActivity.this, "Picture not sent, Try again", Toast.LENGTH_SHORT).show();
loadingBar.dismiss();
}
}
});
}
}
private void FetchMessages()
{
rootRef.child("Messages").child(messageSenderId).child(messageReceiverId)
.addChildEventListener(new ChildEventListener() {
#Override
public void onChildAdded(DataSnapshot dataSnapshot, String s)
{
if (dataSnapshot.exists())
{
Messages messages = dataSnapshot.getValue(Messages.class);
messageList.add(messages);
messageAdapter.notifyDataSetChanged();
userMessagesList.smoothScrollToPosition(userMessagesList.getAdapter().getItemCount());
}
}
#Override
public void onChildChanged(DataSnapshot dataSnapshot, String s)
{
}
#Override
public void onChildRemoved(DataSnapshot dataSnapshot)
{
}
#Override
public void onChildMoved(DataSnapshot dataSnapshot, String s)
{
}
#Override
public void onCancelled(DatabaseError databaseError)
{
}
});
// seenMessage(userid);
}
private void seenMessage(final String userid) //add String and userid
{
rootRef = FirebaseDatabase.getInstance().getReference("Messages");
seenListener = rootRef.addValueEventListener(new ValueEventListener() {
#Override
public void onDataChange(#NonNull DataSnapshot dataSnapshot)
{
for (DataSnapshot snapshot : dataSnapshot.getChildren())
{
Messages messages = snapshot.getValue(Messages.class);
if (messages.getTo().equals(fuser.getUid()) && messages.getFrom().equals(ChatActivity.this.userid))//change messages to userid
{
Map messageTextBody = new HashMap();
messageTextBody.put("isseen", true);
snapshot.getRef().updateChildren(messageTextBody);
}
}
}
#Override
public void onCancelled(#NonNull DatabaseError databaseError) {
}
});
}
private void SendMessage()
{
notify = true;
String messageText = InputMessageText.getText().toString();
if (TextUtils.isEmpty(messageText))
{
Toast.makeText(ChatActivity.this,
"Input message", Toast.LENGTH_SHORT).show();
}
else
{
String message_sender_ref = "Messages/" + messageSenderId + "/" + messageReceiverId;
final String message_receiver_ref = "Messages/" + messageReceiverId + "/" + messageSenderId;
DatabaseReference user_message_key = rootRef.child("Messages").child(messageSenderId)
.child(messageReceiverId).push();
String message_push_id = user_message_key.getKey();
Map messageTextBody = new HashMap();
messageTextBody.put("message", messageText);
messageTextBody.put("isseen", false);
messageTextBody.put("type", "text");
messageTextBody.put("time", ServerValue.TIMESTAMP);
messageTextBody.put("from", messageSenderId);
messageTextBody.put("to", messageReceiverId);
Map messageBodyDetails = new HashMap();
messageBodyDetails.put(message_sender_ref + "/" + message_push_id, messageTextBody);
messageBodyDetails.put(message_receiver_ref + "/" + message_push_id, messageTextBody);
rootRef.updateChildren(messageBodyDetails).addOnCompleteListener(new OnCompleteListener() {
#Override
public void onComplete(#NonNull Task task)
{
if (task.isSuccessful())
{
Toast.makeText(ChatActivity.this, "Message Sent", Toast.LENGTH_SHORT).show();
InputMessageText.setText("");
}
else
{
String message = task.getException().getMessage();
Toast.makeText(ChatActivity.this, "Error:" + message, Toast.LENGTH_SHORT).show();
InputMessageText.setText("");
}
}
});
**i tried sending chat notification with the code below
and that was what triggered the error the messages still get sent but the app crashes and restarts itself.**
final String msg = messageText;
rootRef = FirebaseDatabase.getInstance().getReference("Users").child(fuser.getUid());
rootRef.addValueEventListener(new ValueEventListener() {
#Override
public void onDataChange(#NonNull DataSnapshot dataSnapshot)
{
User user = dataSnapshot.getValue(User.class);
if (notify) {
sendNotification(message_receiver_ref, user.getUsername(), msg);
}
notify = false;
}
#Override
public void onCancelled(#NonNull DatabaseError databaseError) {
}
});
}
}
private void sendNotification(String message_receiver_ref, final String username, final String message)
{
DatabaseReference tokens = FirebaseDatabase.getInstance().getReference("Tokens");
Query query = tokens.orderByKey().equalTo(message_receiver_ref);
query.addValueEventListener(new ValueEventListener() {
#Override
public void onDataChange(#NonNull DataSnapshot dataSnapshot)
{
for (DataSnapshot snapshot: dataSnapshot.getChildren())
{
Token token = snapshot.getValue(Token.class);
Data data = new Data(fuser.getUid(), R.mipmap.app_icon, username+": "+message, "New Message",
userid);
Sender sender = new Sender(data, token.getToken());
apiService.sendNotification(sender)
.enqueue(new retrofit2.Callback<MyResponse>() {
#Override
public void onResponse(Call<MyResponse> call, Response<MyResponse> response)
{
if (response.code() == 200)
{
if (response.body().success != 1)
{
Toast.makeText(ChatActivity.this, "Failed!", Toast.LENGTH_SHORT).show();
}
}
}
#Override
public void onFailure(Call<MyResponse> call, Throwable t)
{
}
});
}
}
#Override
public void onCancelled(#NonNull DatabaseError databaseError)
{
}
});
}
}
this is the logcat below
java.lang.NullPointerException: Attempt to invoke virtual method 'java.lang.String com.google.firebase.auth.FirebaseUser.getUid()' on a null object reference
at com.paddi.paddi.paddi.ChatActivity.SendMessage(ChatActivity.java:504)
at com.paddi.paddi.paddi.ChatActivity.access$200(ChatActivity.java:58)
at com.paddi.paddi.paddi.ChatActivity$2.onClick(ChatActivity.java:251)
at android.view.View.performClick(View.java:5274)
at android.view.View$PerformClick.run(View.java:21543)
at android.os.Handler.handleCallback(Handler.java:815)
at android.os.Handler.dispatchMessage(Handler.java:104)
at android.os.Looper.loop(Looper.java:207)
at android.app.ActivityThread.main(ActivityThread.java:5765)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:789)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:679)

You are getting the following error:
java.lang.NullPointerException: Attempt to invoke virtual method 'java.lang.String com.google.firebase.auth.FirebaseUser.getUid()' on a null object reference
Because your fuser object is not initialized. To solve this, please add the following line of code in your onCreate() method:
fuser = FirebaseAuth.getInstance().getCurrentUser().getUid();

firebase / glide creating a reference of a image and displaying it

I am attempting to have the user upload an image and then have it then displayed as a profile picture. I am able to upload the image to firebase successfully but I am not able to display it I am following this thread
The current problem i am facing is on how to successfully get the image url to be able to display it
the current state of the code
private DatabaseReference mUserDatabase;
private FirebaseUser mCurrentUser;
//Android Layout
private CircleImageView mDisplayImage;
private TextView mName;
private TextView mStatus;
private Button mStatusBtn;
private Button mImageBtn;
private ProgressDialog mProgressDialog;
private static final int GALLERY_PICK = 1;
private StorageReference mImageStorage;
private Context context = user_profile.this;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_user_profile);
mDisplayImage = (CircleImageView) findViewById(R.id.profile_picture);
mName = (TextView) findViewById(R.id.profile_user_name);
mStatus = (TextView) findViewById(R.id.profile_user_status);
mStatusBtn = (Button) findViewById(R.id.profile_change_status_btn);
mImageBtn = (Button) findViewById(R.id.profile_change_image_btn);
mImageStorage = FirebaseStorage.getInstance().getReference();
mCurrentUser = FirebaseAuth.getInstance().getCurrentUser();
String current_uid = mCurrentUser.getUid();
mUserDatabase = FirebaseDatabase.getInstance().getReference().child("Users").child(current_uid);
mUserDatabase.keepSynced(true);
mUserDatabase.addValueEventListener(new ValueEventListener() {
#Override
public void onDataChange(DataSnapshot dataSnapshot) {
String name = Objects.requireNonNull(dataSnapshot.child("name").getValue()).toString();
String status = Objects.requireNonNull(dataSnapshot.child("status").getValue()).toString();
String image = Objects.requireNonNull(dataSnapshot.child("image").getValue()).toString();
mName.setText(name);
mStatus.setText(status);
}
#Override
public void onCancelled(DatabaseError databaseError) {
}
});
mStatusBtn.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View view) {
String status_value = mStatus.getText().toString();
Intent status_intent = new Intent(user_profile.this, change_status.class);
status_intent.putExtra("status_value", status_value);
startActivity(status_intent);
}
});
mImageBtn.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View view) {
Intent galleryIntent = new Intent();
galleryIntent.setType("image/*");
galleryIntent.setAction(Intent.ACTION_GET_CONTENT);
startActivityForResult(Intent.createChooser(galleryIntent, "Select Image"), GALLERY_PICK);
}
});
}
#Override
protected void onActivityResult(int requestCode, int resultCode, final Intent data) {
super.onActivityResult(requestCode, resultCode, data);
if (requestCode == GALLERY_PICK && resultCode == RESULT_OK) {
String imageUri = data.getDataString();
CropImage.activity(Uri.parse(imageUri))
.setAspectRatio(1, 1)
.start(this);
}
if (requestCode == CropImage.CROP_IMAGE_ACTIVITY_REQUEST_CODE) {
CropImage.ActivityResult result = CropImage.getActivityResult(data);
if (resultCode == RESULT_OK) {
mProgressDialog = new ProgressDialog((user_profile.this));
mProgressDialog.setTitle("Uploading");
mProgressDialog.setMessage("Pleas Stand By");
mProgressDialog.setCanceledOnTouchOutside(false);
mProgressDialog.show();
Uri resultUri = result.getUri();
String current_user_id = mCurrentUser.getUid();
StorageReference filepath = mImageStorage.child("profile_images").child(current_user_id + (".jpeg"));
filepath.putFile(resultUri).addOnCompleteListener(new OnCompleteListener<UploadTask.TaskSnapshot>() {
#Override
public void onComplete(#NonNull Task<UploadTask.TaskSnapshot> task) {
if (task.isSuccessful()) {
final String download_url = Objects.requireNonNull(task.getResult()).getStorage().getDownloadUrl().toString();
mUserDatabase.child("image").setValue(download_url).addOnCompleteListener(new OnCompleteListener<Void>() {
#Override
public void onComplete(#NonNull Task<Void> task) {
if (task.isSuccessful()) {
Glide
.with(context)
.load()
.into(mDisplayImage);
mProgressDialog.dismiss();
Toast.makeText(user_profile.this, "Succesful Upload", Toast.LENGTH_LONG).show();
}
}
});
} else {
Toast.makeText(user_profile.this, "Error Up Loading", Toast.LENGTH_SHORT).show();
mProgressDialog.dismiss();
}
}
});
} else if (resultCode == CropImage.CROP_IMAGE_ACTIVITY_RESULT_ERROR_CODE) {
Exception error = result.getError();
}
}
}
public String niceRefLink (String date){
StorageReference storageRef = FirebaseStorage.getInstance().getReference();
StorageReference dateRef = storageRef.child("profile_images");
return dateRef.toString();
}}
I believe the issue is with this block of code
public String niceRefLink (String date){
StorageReference storageRef = FirebaseStorage.getInstance().getReference();
StorageReference dateRef = storageRef.child("profile_images");
return dateRef.toString();
}}
When the image is attempted to be displayed glide says that it is unable to locate the image this is how my database is looking
I tried to use the method niceRefLink to display the image but I was unsuccessful i have also tried the download_url string i have created but also did not work
HI, i tried the answer you submitted but I am still having issues the image is successfully getting uploaded to the database but it is still not getting displayed when i run the app i am getting the toast upload successful but the image stays as the preview image.
private String mImageUri;
private void getUserInfo(){
mUserDatabase.child("Users").addValueEventListener(new ValueEventListener() {
#Override
public void onDataChange(DataSnapshot dataSnapshot) {
if(dataSnapshot.exists() && dataSnapshot.getChildrenCount()>0){
Map<String, Object> map = (Map<String, Object>) dataSnapshot.getValue();
if(map.get("image")!=null){
mImageUri = map.get("image").toString();
Glide.with(getApplication()).load(mImageUri).into(mDisplayImage);
}
}
}
#Override
public void onCancelled(DatabaseError databaseError) {
}
});
}

This code is, How to get image url and how to display in ImageView.
private void getUserInfo(){
mCustomerDatabase.child("Users").child(current_uid).addValueEventListener(new ValueEventListener() {
#Override
public void onDataChange(DataSnapshot dataSnapshot) {
if(dataSnapshot.exists() && dataSnapshot.getChildrenCount()>0){
Map<String, Object> map = (Map<String, Object>) dataSnapshot.getValue();
if(map.get("image")!=null){
mProfileImageUrl = map.get("image").toString();
Glide.with(getApplication()).load(mProfileImageUrl).into(profileImage);
}
}
}
#Override
public void onCancelled(DatabaseError databaseError) {
}
});
}
Hope it's help full and Enjoy.