<?xml version="1.0" encoding="utf-8"?>
<ScrollView xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:background="@color/bg"
android:fitsSystemWindows="true">
<LinearLayout
android:orientation="vertical"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:paddingTop="56dp"
android:paddingLeft="24dp"
android:paddingRight="24dp"
android:weightSum="1">
<ImageView android:src="@drawable/logo"
android:layout_width="wrap_content"
android:layout_height="100dp"
android:layout_marginBottom="24dp"
android:layout_gravity="center_horizontal" />
<!-- Email Label -->
<android.support.design.widget.TextInputLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginTop="8dp"
android:layout_marginBottom="8dp">
<EditText android:id="@+id/input_email"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:inputType="textEmailAddress"
android:hint="Email" />
</android.support.design.widget.TextInputLayout>
<!-- Password Label -->
<android.support.design.widget.TextInputLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginTop="8dp"
android:layout_marginBottom="8dp">
<EditText android:id="@+id/input_password"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:inputType="textPassword"
android:hint="Password"/>
</android.support.design.widget.TextInputLayout>
<android.support.v7.widget.AppCompatButton
android:id="@+id/btn_login"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:layout_marginTop="24dp"
android:layout_marginBottom="24dp"
android:padding="12dp"
android:text="Login"
android:background="@drawable/nice_button"
android:textColor="@android:color/white"
android:textSize="18sp"
android:shadowRadius="1"
android:shadowDx="1"
android:shadowDy="1"
android:shadowColor="@android:color/black"/>
<com.facebook.login.widget.LoginButton
android:id="@+id/login_button"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center_horizontal"
android:layout_marginTop="10dp"
android:layout_marginBottom="30dp" />
<TextView android:id="@+id/link_signup"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:layout_marginBottom="24dp"
android:text="No account yet? Create one"
android:gravity="center"
android:textSize="16dip"/>
</LinearLayout>
</ScrollView>I am trying to add Facebook login to my app following a tutorial. I am getting this error. I searched on the internet but did not get any solution. I pointed out that the problem is in the XML file Facebook button widget.
05-14 00:59:52.399 28057-28057/com.donateblood.blooddonation E/AndroidRuntime: FATAL EXCEPTION: main
Process: com.donateblood.blooddonation, PID: 28057
java.lang.ExceptionInInitializerError
at java.lang.reflect.Constructor.newInstance(Native Method)
at java.lang.reflect.Constructor.newInstance(Constructor.java:288)
at android.view.LayoutInflater.createView(LayoutInflater.java:607)
at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:743)
at android.view.LayoutInflater.rInflate(LayoutInflater.java:806)
at android.view.LayoutInflater.rInflate(LayoutInflater.java:809)
at android.view.LayoutInflater.inflate(LayoutInflater.java:504)
at android.view.LayoutInflater.inflate(LayoutInflater.java:414)
at android.view.LayoutInflater.inflate(LayoutInflater.java:365)
at android.support.v7.app.AppCompatDelegateImplV7.setContentView(AppCompatDelegateImplV7.java:256)
at android.support.v7.app.AppCompatActivity.setContentView(AppCompatActivity.java:109)
at com.donateblood.blooddonation.LoginActivity.onCreate(LoginActivity.java:87)
at android.app.Activity.performCreate(Activity.java:5958)
at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1129)
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2364)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2474)
at android.app.ActivityThread.access$800(ActivityThread.java:144)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1359)
at android.os.Handler.dispatchMessage(Handler.java:102)
at android.os.Looper.loop(Looper.java:155)
at android.app.ActivityThread.main(ActivityThread.java:5696)
at java.lang.reflect.Method.invoke(Native Method)
at java.lang.reflect.Method.invoke(Method.java:372)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1028)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:823)
Caused by: null
at com.facebook.internal.Validate.sdkInitialized(Validate.java:99)
at com.facebook.FacebookSdk.getCallbackRequestCodeOffset(FacebookSdk.java:735)
at com.facebook.internal.CallbackManagerImpl$RequestCodeOffset.toRequestCode(CallbackManagerImpl.java:109)
at com.facebook.login.widget.LoginButton.<clinit>(LoginButton.java:58)
at java.lang.reflect.Constructor.newInstance(Native Method)
at java.lang.reflect.Constructor.newInstance(Constructor.java:288)
at android.view.LayoutInflater.createView(LayoutInflater.java:607)
at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:743)
at android.view.LayoutInflater.rInflate(LayoutInflater.java:806)
at android.view.LayoutInflater.rInflate(LayoutInflater.java:809)
at android.view.LayoutInflater.inflate(LayoutInflater.java:504)
at android.view.LayoutInflater.inflate(LayoutInflater.java:414)
at android.view.LayoutInflater.inflate(LayoutInflater.java:365)
at android.support.v7.app.AppCompatDelegateImplV7.setContentView(AppCompatDelegateImplV7.java:256)
at android.support.v7.app.AppCompatActivity.setContentView(AppCompatActivity.java:109)
at com.donateblood.blooddonation.LoginActivity.onCreate(LoginActivity.java:87)
at android.app.Activity.performCreate(Activity.java:5958)
at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1129)
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2364)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2474)
at android.app.ActivityThread.access$800(ActivityThread.java:144)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1359)
at android.os.Handler.dispatchMessage(Handler.java:102)
at android.os.Looper.loop(Looper.java:155)
at android.app.ActivityThread.main(ActivityThread.java:5696)
at java.lang.reflect.Method.invoke(Native Method)
at java.lang.reflect.Method.invoke(Method.java:372)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1028)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:823) package com.donateblood.blooddonation;
import android.os.AsyncTask;
import android.os.Bundle;
import android.app.ProgressDialog;
import android.os.Bundle;
import android.support.v7.app.AppCompatActivity;
import android.util.Log;
import com.facebook.AccessToken;
import com.facebook.CallbackManager;
import com.facebook.FacebookCallback;
import com.facebook.FacebookException;
import com.facebook.FacebookSdk;
import android.content.Intent;
import android.view.View;
import android.widget.Button;
import android.widget.EditText;
import android.widget.TextView;
import android.widget.Toast;
import butterknife.ButterKnife;
import butterknife.InjectView;
import android.support.design.widget.FloatingActionButton;
import android.support.design.widget.Snackbar;
import android.support.v7.app.AppCompatActivity;
import android.support.v7.widget.Toolbar;
import android.view.View;
import android.view.Menu;
import android.view.MenuItem;
import com.facebook.Profile;
import com.facebook.login.LoginResult;
import com.facebook.login.widget.LoginButton;
import com.mongodb.BasicDBObject;
import com.mongodb.DB;
import com.mongodb.DBCollection;
import com.mongodb.DBCursor;
import com.mongodb.DBObject;
public class LoginActivity extends AppCompatActivity {
private static final String TAG = "LoginActivity";
private static final int REQUEST_SIGNUP = 0;
DB db;
DBCursor cursor;
GPSTracker gps ;
DBCollection collection;
Database dataobj = new Database();
public static String email;
public static String password;
private CallbackManager mcallbackManager;
private FacebookCallback<LoginResult> mcallbackk = new FacebookCallback<LoginResult>() {
@Override
public void onSuccess(LoginResult loginResult) {
AccessToken accss = loginResult.getAccessToken();
Profile prof = Profile.getCurrentProfile();
Intent intent = new Intent(getApplicationContext(), MainGUI.class);
startActivity(intent);
finish();
}
@Override
public void onCancel() {
}
@Override
public void onError(FacebookException error) {
}
};
@InjectView(R.id.input_email) EditText _emailText;
@InjectView(R.id.input_password) EditText _passwordText;
@InjectView(R.id.btn_login) Button _loginButton;
@InjectView(R.id.link_signup) TextView _signupLink;
//GPSTracker gps;
//public static Button myloc;
// public static TextView myTxt;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_login);
LoginButton fbLogin = (LoginButton) findViewById(R.id.login_button);
ButterKnife.inject(this);
getSupportActionBar().setDisplayHomeAsUpEnabled(true);
FacebookSdk.sdkInitialize(LoginActivity.this);
mcallbackManager = CallbackManager.Factory.create();
fbLogin.registerCallback(mcallbackManager,mcallbackk);
// myloc = (Button) findViewById(R.id.loc);
// myTxt= (TextView) findViewById(R.id.text);
/* myloc.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
// Intent intent = new Intent(getApplicationContext(), LoginActivity.class);
gps=new GPSTracker(LoginActivity.this);
}
}); */
_loginButton.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
AsyncLogin LoginThread = new AsyncLogin();
LoginThread.execute();
}
});
fbLogin.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
}
});
_signupLink.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
Intent intent = new Intent(getApplicationContext(), SignupActivity.class);
startActivityForResult(intent, REQUEST_SIGNUP);
}
});
}
@Override
public boolean onOptionsItemSelected(MenuItem item) {
if(item.getItemId()==android.R.id.home){
finish();
}
return super.onOptionsItemSelected(item);
}
public class AsyncLogin extends AsyncTask<Void,Void,Void> {
public boolean flag =false;
private ProgressDialog pDialog;
@Override
protected Void doInBackground(Void... voids) {
login();
return null;
}
@Override
protected void onPreExecute() {
super.onPreExecute();
if (!validate()) {
onLoginFailed();
return;
}
_loginButton.setEnabled(false);
pDialog = new ProgressDialog(LoginActivity.this);
pDialog.setMessage("Authenticating...");
pDialog.setIndeterminate(false);
pDialog.setCancelable(true);
pDialog.show();
}
@Override
protected void onPostExecute(Void aVoid) {
super.onPostExecute(aVoid);
pDialog.dismiss();
if(flag==true){
Toast.makeText(getBaseContext(), "Login Successfully", Toast.LENGTH_LONG).show();
onLoginSuccess();
}
if(flag==false){
onLoginFailed();
}
}
public void login() {
email = _emailText.getText().toString();
password = _passwordText.getText().toString();
db = dataobj.getconnection();
collection= db.getCollection("UserDetails");
BasicDBObject query = new BasicDBObject();
query.put("email", email);
query.put("password", password);
cursor = collection.find(query);
if(cursor.hasNext()){
flag=true;
}
}
}
@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
super.onActivityResult(requestCode,resultCode,data);
mcallbackManager.onActivityResult(requestCode,resultCode,data);
if (requestCode == REQUEST_SIGNUP) {
if (resultCode == RESULT_OK) {
// TODO: Implement successful signup logic here
// By default we just finish the Activity and log them in automatically
this.finish();
}
}
}
/* @Override
public void onBackPressed() {
// disable going back to the MainActivity
moveTaskToBack(true);
}*/
public void onLoginSuccess() {
_loginButton.setEnabled(true);
gps=new GPSTracker(LoginActivity.this);
Intent intent = new Intent(getApplicationContext(), MainGUI.class);
startActivity(intent);
finish();
}
public void onLoginFailed() {
Toast.makeText(getBaseContext(), "Login failed. Incorrect credentials", Toast.LENGTH_LONG).show();
_loginButton.setEnabled(true);
}
public boolean validate() {
boolean valid = true;
String email = _emailText.getText().toString();
String password = _passwordText.getText().toString();
if (email.isEmpty() || !android.util.Patterns.EMAIL_ADDRESS.matcher(email).matches()) {
_emailText.setError("Enter a valid email address");
valid = false;
} else {
_emailText.setError(null);
}
if (password.isEmpty()) {
_passwordText.setError("Enter password");
valid = false;
} else {
_passwordText.setError(null);
}
return valid;
}
}FacebookSdk.sdkInitialize();
It must be called from your Application class, not your Activity's. As per the docs:
sdkInitialize(Context, int)
This function initializes the Facebook SDK, the behavior of Facebook SDK functions are undetermined if this function is not called. It should be called as early as possible.