this is what my logcat says: 2019-09-17 21:02:48.887 19276-19276/com.oopproject.androidbarberbooking E/AndroidRuntime: FATAL EXCEPTION: main Process: com.oopproject.androidbarberbooking, PID: 19276 java.lang.NullPointerException: Attempt to invoke virtual method 'java.lang.String com.oopproject.androidbarberbooking.Model.User.getName()' on a null object reference at com.oopproject.androidbarberbooking.Fragments.HomeFragment.setUserInformation(HomeFragment.java:152) at com.oopproject.androidbarberbooking.Fragments.HomeFragment.onCreateView(HomeFragment.java:94)
this is my home activity:
private void setUserInformation() public class HomeActivity extends AppCompatActivity {
@BindView(R.id.bottom_navigation)
BottomNavigationView bottomNavigationView;
BottomSheetDialog bottomSheetDialog;
CollectionReference userRef;
AlertDialog dialog;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_home);
ButterKnife.bind(HomeActivity.this);
userRef = FirebaseFirestore.getInstance().collection("User");
dialog = new SpotsDialog.Builder().setContext(this).setCancelable(false).build();
//Checked if Logged in
if (getIntent() != null)
{
boolean isLogin = getIntent().getBooleanExtra(Common.IS_LOGIN,false);
if (isLogin)
{
dialog.show();
//Check if user exist
AccountKit.getCurrentAccount(new AccountKitCallback<Account>() {
@Override
public void onSuccess(Account account) {
if (account != null)
{
final DocumentReference currentUser = userRef.document(account.getPhoneNumber().toString());
currentUser.get()
.addOnCompleteListener(new OnCompleteListener<DocumentSnapshot>() {
@Override
public void onComplete(@NonNull Task<DocumentSnapshot> task) {
if (task.isSuccessful())
{
DocumentSnapshot userSnapShot = task.getResult();
if (!userSnapShot.exists())
{
showUpdateDialog(account.getPhoneNumber().toString());
}
else
{
//if there is already a registered user
Common.currentUser = userSnapShot.toObject(User.class);
bottomNavigationView.setSelectedItemId(R.id.action_home);
}
if (dialog.isShowing())
dialog.dismiss();
}
}
});
}
}
@Override
public void onError(AccountKitError accountKitError) {
Toast.makeText(HomeActivity.this, ""+accountKitError.getErrorType().getMessage(), Toast.LENGTH_SHORT).show();
}
});
}
}
bottomNavigationView.setOnNavigationItemSelectedListener(new BottomNavigationView.OnNavigationItemSelectedListener() {
Fragment fragment = null;
@Override
public boolean onNavigationItemSelected(@NonNull MenuItem menuItem) {
if (menuItem.getItemId() == R.id.action_home) {
fragment = new HomeFragment();
} else if (menuItem.getItemId() == R.id.action_shop)
fragment = new ShopFragment();
return loadFragment(fragment);
}
});
}
private boolean loadFragment(Fragment fragment) {
if (fragment != null)
{
getSupportFragmentManager().beginTransaction().replace(R.id.fragment_container,fragment)
.commit();
return true;
}
return false;
}
private void showUpdateDialog(final String phoneNumber) {
bottomSheetDialog = new BottomSheetDialog(this);
bottomSheetDialog.setTitle("One More Step!");
bottomSheetDialog.setCanceledOnTouchOutside(false);
bottomSheetDialog.setCancelable(false);
View sheetView = getLayoutInflater().inflate(R.layout.layout_update_information,null);
Button btn_update = (Button)sheetView.findViewById(R.id.btn_update);
final TextInputEditText edt_name = (TextInputEditText)sheetView.findViewById(R.id.edt_name);
final TextInputEditText edt_address = (TextInputEditText)sheetView.findViewById(R.id.edt_address);
btn_update.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
if (!dialog.isShowing())
dialog.show();
User user = new User(edt_name.getText().toString(),
edt_address.getText().toString(),
phoneNumber);
userRef.document(phoneNumber)
.set(user)
.addOnSuccessListener(new OnSuccessListener<Void>() {
@Override
public void onSuccess(Void aVoid) {
bottomSheetDialog.dismiss();
if (dialog.isShowing())
dialog.dismiss();
Common.currentUser = user;
bottomNavigationView.setSelectedItemId(R.id.action_home);
Toast.makeText(HomeActivity.this, "Thank You!", Toast.LENGTH_SHORT).show();
}
}).addOnFailureListener(new OnFailureListener() {
@Override
public void onFailure(@NonNull Exception e) {
bottomSheetDialog.dismiss();
if (dialog.isShowing())
dialog.dismiss();
Toast.makeText(HomeActivity.this, ""+e.getMessage(), Toast.LENGTH_SHORT).show();
}
});
}
});
bottomSheetDialog.setContentView(sheetView);
bottomSheetDialog.show();
}
}
and my homefragment line 150-154 where Common.current user is used again:
private void setUserInformation() {
layout_user_information.setVisibility(View.VISIBLE);
txt_user_name.setText(Common.currentUser.getName());
}
and this is what is in my Model User java class:
package com.oopproject.androidbarberbooking.Model;
public class User {
private String name,address,phoneNumber;
public User() {
}
public User(String name, String address, String phoneNumber) {
this.name = name;
this.address = address;
this.phoneNumber = phoneNumber;
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public String getAddress() {
return address;
}
public void setAddress(String address) {
this.address = address;
}
public String getPhoneNumber() {
return phoneNumber;
}
public void setPhoneNumber(String phoneNumber) {
this.phoneNumber = phoneNumber;
}
}
