Hello everyone I have a problem with FireBase create user and register user. Below is the code for register and login. I get nullPointer Exception and cant understand why .. the initialisation is made but cant figure it out so many days trying.
Register:
public class RegisterActivity extends Activity {
private EditText mDisName;
private EditText mMail;
private EditText mPass;
private Button reg;
private TextView error;
private FirebaseAuth regAuth;
private ProgressBar myprog;
private int Progress =0;
private Handler myHandler= new Handler();
private DatabaseReference databaseRef;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_register);
mDisName =(EditText) findViewById(R.id.reg_name);
mMail = (EditText) findViewById(R.id.reg_mail);
mPass = (EditText) findViewById(R.id.reg_password);
reg = (Button) findViewById(R.id.reg_button);
error = (TextView) findViewById(R.id.textView4);
myprog = (ProgressBar) findViewById(R.id.progressbar);
regAuth = FirebaseAuth.getInstance();
databaseRef = FirebaseDatabase.getInstance().getReference().child("UserNames :");
reg.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
String disName = mDisName.getText().toString();
String dmail = mMail.getText().toString();
String pass = mPass.getText().toString();
new Thread(new Runnable() {
@Override
public void run() {
while(Progress < 100) {
Progress++;
android.os.SystemClock.sleep(30);
myHandler.post(new Runnable() {
@Override
public void run() {
myprog.setProgress(Progress);
}
});
}
}
}).start();
registerUser(disName,dmail,pass);
}
});
}
public void registerUser(final String displayName,String email, String password){
databaseRef.push().setValue(displayName);
-->Error line <-- regAuth.createUserWithEmailAndPassword(email, password).addOnCompleteListener(this, new OnCompleteListener<AuthResult>() {
@Override
public void onComplete(@NonNull Task<AuthResult> task) {
if (task.isSuccessful()) {
Intent loginIntent = new Intent(RegisterActivity.this, login.class);
startActivity(loginIntent);
Spannable errormes = new SpannableString("\"Registration Successful As User :\"" + displayName);
errormes.setSpan(new ForegroundColorSpan(Color.GREEN), 0, errormes.length(), Spannable.SPAN_EXCLUSIVE_EXCLUSIVE);
error.setText(errormes);
//finish();
} else {
Toast.makeText(RegisterActivity.this, "Error with registration!", Toast.LENGTH_LONG).show();
error.setText(" Error 110! User already exists! \n Please provide different username!");
try {
throw task.getException();
} catch (FirebaseAuthWeakPasswordException e) {
Log.e("Exception", e.getMessage());
} catch (FirebaseAuthInvalidCredentialsException e) {
Log.e("Exception", e.getMessage());
} catch (FirebaseAuthUserCollisionException e) {
Log.e("Exception", e.getMessage());
} catch (Exception e) {
Log.e("Exception", e.getMessage());
}
}
}
});
}
}
Posting the log error for the register activity :
java.lang.NullPointerException at com.google.android.gms.internal.zzdvv.zzb(Unknown Source) at com.google.android.gms.internal.zzdwc.zza(Unknown Source) at com.google.firebase.auth.FirebaseAuth.createUserWithEmailAndPassword(Unknown Source) at com.package.myapp.RegisterActivity.registerUser(RegisterActivity.java:88) at com.package.myapp.RegisterActivity$1.onClick(RegisterActivity.java:79) at android.view.View.performClick(View.java:4438) at android.view.View$PerformClick.run(View.java:18422) at android.os.Handler.handleCallback(Handler.java:733) at android.os.Handler.dispatchMessage(Handler.java:95) at android.os.Looper.loop(Looper.java:136) at android.app.ActivityThread.main(ActivityThread.java:5017) at java.lang.reflect.Method.invokeNative(Native Method) at java.lang.reflect.Method.invoke(Method.java:515) at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:779) at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:595) at dalvik.system.NativeStart.main(Native Method)
Also same thing happens with login ( after registering user , using firebase plus button on site)
Login activity sample code :
java.lang.IllegalStateException: Could not execute method of the activity at android.view.View$1.onClick(View.java:3823) at android.view.View.performClick(View.java:4438) at android.view.View$PerformClick.run(View.java:18422) at android.os.Handler.handleCallback(Handler.java:733) at android.os.Handler.dispatchMessage(Handler.java:95) at android.os.Looper.loop(Looper.java:136) at android.app.ActivityThread.main(ActivityThread.java:5017) at java.lang.reflect.Method.invokeNative(Native Method) at java.lang.reflect.Method.invoke(Method.java:515) at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:779) at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:595) at dalvik.system.NativeStart.main(Native Method) Caused by: java.lang.reflect.InvocationTargetException at java.lang.reflect.Method.invokeNative(Native Method) at java.lang.reflect.Method.invoke(Method.java:515) at android.view.View$1.onClick(View.java:3818) at android.view.View.performClick(View.java:4438) at android.view.View$PerformClick.run(View.java:18422) at android.os.Handler.handleCallback(Handler.java:733) at android.os.Handler.dispatchMessage(Handler.java:95) at android.os.Looper.loop(Looper.java:136) at android.app.ActivityThread.main(ActivityThread.java:5017) at java.lang.reflect.Method.invokeNative(Native Method) at java.lang.reflect.Method.invoke(Method.java:515) at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:779) at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:595) at dalvik.system.NativeStart.main(Native Method) Caused by: java.lang.NullPointerException at com.google.android.gms.internal.zzdvv.zzb(Unknown Source) at com.google.android.gms.internal.zzdwc.zzb(Unknown Source) at com.google.firebase.auth.FirebaseAuth.signInWithEmailAndPassword(Unknown Source) at com.package.myapp.login.login(login.java:143)
Also providing the login java class below :
public class login extends Activity {
private EditText user;
private EditText password;
private TextView registerView;
private TextView loginView;
private Spannable errormes;
private FirebaseAuth mAuth;
private Button login;
private CallbackManager callbackManager ;
private ImageView loginIma;
private ImageView image;
private ImageView image2;
private CardView cardView;
private GoogleSignInOptions gso;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_login);
user = (EditText) findViewById(R.id.username);
image=(ImageView)findViewById(R.id.imageView4);
image2=(ImageView)findViewById(R.id.imageView3);
errormes = new SpannableString("Error 100! User doesnt exists! \n Please register first");
userdatabase = FirebaseDatabase.getInstance().getReference().child("Users :");
mAuth = FirebaseAuth.getInstance();
registerView = (TextView) findViewById(R.id.registerView);
password = (EditText)findViewById(R.id.passwordView);
callbackManager = CallbackManager.Factory.create();
boolean loggedIn = AccessToken.getCurrentAccessToken() == null;
cardView=(CardView)findViewById(R.id.cardView);
loginView = (TextView) findViewById(R.id.loginView);
callbackManager = CallbackManager.Factory.create();
LoginManager.getInstance().registerCallback(callbackManager,
new FacebookCallback<LoginResult>() {
@Override
public void onSuccess(LoginResult loginResult) {
Intent account = new Intent(login.this,menu_activity.class);
startActivity(account);
}
@Override
public void onCancel() {
Intent main = new Intent(login.this,login.class);
startActivity(main);
finish();
}
@Override
public void onError(FacebookException exception) {
Toast.makeText(login.this, "Error 500! Facebook login failed!", Toast.LENGTH_SHORT).show();
}
});
}
private int size = 0;
private HashMap<String, String> users = new HashMap<String, String>();
private DatabaseReference userdatabase;
private FirebaseAuth.AuthStateListener mAuthListener;
public void setSize(int newsize) {
this.size = newsize;
}
public void login(View view) {
EditText user = (EditText) findViewById(R.id.username);
EditText password = (EditText) findViewById(R.id.passwordView);
Spannable errormes = new SpannableString("Error 100! User doesnt exists! \n Please register first");
errormes.setSpan(new ForegroundColorSpan(Color.RED), 0, errormes.length(), Spannable.SPAN_EXCLUSIVE_EXCLUSIVE);
Intent userAcc = new Intent(login.this,menu_activity.class);
startActivity(userAcc);
**//error line** mAuth.signInWithEmailAndPassword(user.getText().toString(), password.getText().toString())
.addOnCompleteListener(this, new OnCompleteListener<AuthResult>() {
@Override
public void onComplete(@NonNull Task<AuthResult> task) {
if (task.isSuccessful()) {
// Sign in success, update UI with the signed-in user's information
Log.d("Loged on!", "signInWithEmail:success");
Toast.makeText(login.this, "Loged On!.", Toast.LENGTH_SHORT).show();
Intent userAcc = new Intent(login.this,menu_activity.class);
startActivity(userAcc);
} else {
// If sign in fails, display a message to the user.
Log.w("Login Failed!", "signInWithEmail:failure", task.getException());
Toast.makeText(login.this, "Authentication failed.", Toast.LENGTH_SHORT).show();
}
// ...
}
});
}
If anyone can help would be glad. Thanks in advance!
W/GooglePlayServicesUtil: Google Play services out of date. The device or emulator must have a version of Play services installed that supports the version of the Firebase SDK the app is built with. – Bob Snyder