Log out option added

app/src/main/java/com/paktalin/vocabularynotebook/activities/AddWordActivity.java

-package com.paktalin.vocabularynotebook.activities;
-
-import android.os.Bundle;
-import android.support.annotation.Nullable;
-import android.support.v7.app.AppCompatActivity;
-
-import com.paktalin.vocabularynotebook.R;
-
-public class AddWordActivity extends AppCompatActivity {
-
-    @Override
-    protected void onCreate(@Nullable Bundle savedInstanceState) {
-        super.onCreate(savedInstanceState);
-        setContentView(R.layout.activity_add_word);
-    }
-}

app/src/main/java/com/paktalin/vocabularynotebook/activities/AddWordActivity.kt

+package com.paktalin.vocabularynotebook.activities
+
+import android.os.Bundle
+import android.support.v7.app.AppCompatActivity
+
+import com.paktalin.vocabularynotebook.R
+
+class AddWordActivity : AppCompatActivity() {
+
+    override fun onCreate(savedInstanceState: Bundle?) {
+        super.onCreate(savedInstanceState)
+        setContentView(R.layout.activity_add_word)
+    }
+}

app/src/main/java/com/paktalin/vocabularynotebook/activities/LogInActivity.kt

@@ -63,16 +63,13 @@ class LogInActivity : AppCompatActivity() {
             //todo check if the password is good
             // todo verify email
             mAuth!!.createUserWithEmailAndPassword(email, password)
-                    .addOnCompleteListener(this) { task ->
-                        if (task.isSuccessful) {
-                            Log.d(TAG, "Successfully signed up a new user")
-                            UserManager.addNewUserToDb(mAuth!!.currentUser!!, this)
-                        }
-                        else {
-                            Log.w(TAG, "createUserWithEmail:failure", task.exception)
-                            Toast.makeText(this@LogInActivity, "Authentication failed.",
-                                    Toast.LENGTH_SHORT).show()
-                        }
+                    .addOnSuccessListener { _ ->
+                        Log.d(TAG, "Successfully signed up a new user")
+                        UserManager.addNewUserToDb(mAuth!!.currentUser!!, this)
+                    }
+                    .addOnFailureListener {
+                        Log.d(TAG, "createUserWithEmail:failure", it.fillInStackTrace())
+                        Toast.makeText(this@LogInActivity, it.message, Toast.LENGTH_SHORT).show()
                     }
         }
     }

app/src/main/java/com/paktalin/vocabularynotebook/activities/MainActivity.kt

 package com.paktalin.vocabularynotebook.activities
 
+import android.content.Intent
 import android.os.Bundle
 import android.support.v7.app.AppCompatActivity
+import android.util.Log
+import com.google.firebase.auth.FirebaseAuth
 
 import com.paktalin.vocabularynotebook.R
 import kotlinx.android.synthetic.main.activity_main.*
@@ -14,11 +17,21 @@ class MainActivity : AppCompatActivity() {
 
         navigationView.setNavigationItemSelectedListener { menuItem ->
             menuItem.isChecked = true
+
+            if(menuItem.itemId == R.id.logOut) { logOut() }
+
             drawerLayout!!.closeDrawers()
             true
         }
     }
 
+    private fun logOut() {
+        Log.i(TAG, "User logged out")
+        FirebaseAuth.getInstance()!!.signOut()
+        val intentLogInActivity = Intent(this@MainActivity, LogInActivity::class.java)
+        startActivity(intentLogInActivity)
+    }
+
     companion object {
         private val TAG = "VN/" + MainActivity::class.simpleName
     }

app/src/main/res/menu/activity_main_drawer.xml

@@ -14,9 +14,9 @@
 
     <group android:checkableBehavior="single">
         <item
-            android:id="@+id/map"
-            android:icon="@drawable/common_google_signin_btn_icon_light"
-            android:title="Vocabulary" />
+            android:id="@+id/logOut"
+            android:icon="@android:drawable/ic_lock_power_off"
+            android:title="Log out" />
     </group>
 
 </menu>