diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..5edb4ee
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1,10 @@
+*.iml
+.gradle
+/local.properties
+/.idea/libraries
+/.idea/modules.xml
+/.idea/workspace.xml
+.DS_Store
+/build
+/captures
+.externalNativeBuild
diff --git a/.idea/caches/build_file_checksums.ser b/.idea/caches/build_file_checksums.ser
new file mode 100644
index 0000000..feb9fb3
Binary files /dev/null and b/.idea/caches/build_file_checksums.ser differ
diff --git a/.idea/codeStyles/Project.xml b/.idea/codeStyles/Project.xml
new file mode 100644
index 0000000..30aa626
--- /dev/null
+++ b/.idea/codeStyles/Project.xml
@@ -0,0 +1,29 @@
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
\ No newline at end of file
diff --git a/.idea/gradle.xml b/.idea/gradle.xml
new file mode 100644
index 0000000..7ac24c7
--- /dev/null
+++ b/.idea/gradle.xml
@@ -0,0 +1,18 @@
+
+
+
+
+
+
\ No newline at end of file
diff --git a/.idea/misc.xml b/.idea/misc.xml
new file mode 100644
index 0000000..c0f68ed
--- /dev/null
+++ b/.idea/misc.xml
@@ -0,0 +1,34 @@
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
\ No newline at end of file
diff --git a/.idea/runConfigurations.xml b/.idea/runConfigurations.xml
new file mode 100644
index 0000000..7f68460
--- /dev/null
+++ b/.idea/runConfigurations.xml
@@ -0,0 +1,12 @@
+
+
+
+
+
+
+
+
+
+
+
+
\ No newline at end of file
diff --git a/.idea/vcs.xml b/.idea/vcs.xml
new file mode 100644
index 0000000..94a25f7
--- /dev/null
+++ b/.idea/vcs.xml
@@ -0,0 +1,6 @@
+
+
+
+
+
+
\ No newline at end of file
diff --git a/README.md b/README.md
deleted file mode 100644
index 16c899c..0000000
--- a/README.md
+++ /dev/null
@@ -1,51 +0,0 @@
-# Android-Course-Dot
-
-You can find every Lecture code here
-
-💀 Lecture 1:
-https://github.com/LinuxDevil/Android-Course-Dot/tree/Lecture_1
-
-💀 Lecture 2:
-https://github.com/LinuxDevil/Android-Course-Dot/tree/Lecture2
-
-💀 Lecture 3:
-https://github.com/LinuxDevil/Android-Course-Dot/tree/Lecture3
-
-💀 Lecture 4:
-https://github.com/LinuxDevil/Android-Course-Dot/tree/Lecture4
-
-💀 Lecture 4 Love Meeter:
-https://github.com/LinuxDevil/Android-Course-Dot/tree/Lecture4_Love_Meter
-
-💀 Lecture 5:
-https://github.com/LinuxDevil/Android-Course-Dot/tree/Lecture5
-
-💀 Lecture 6:
-https://github.com/LinuxDevil/Android-Course-Dot/tree/Lecture6
-
-💀 Lecture 7:
-https://github.com/LinuxDevil/Android-Course-Dot/tree/Lecture7
-
-💀 Lecture 8:
-https://github.com/LinuxDevil/Android-Course-Dot/tree/Lecture8
-
-💀 Lecture 9:
-https://github.com/LinuxDevil/Android-Course-Dot/tree/Lecture9
-
-💀 Lecture 10:
-https://github.com/LinuxDevil/Android-Course-Dot/tree/Lecture_10
-
-💀 Lecture 11:
-https://github.com/LinuxDevil/Android-Course-Dot/tree/Lecture11
-
-💀 Lecture 11 Task:
-https://github.com/LinuxDevil/Android-Course-Dot/tree/Lecture11_Task
-
-💀 Lecture 12:
-https://github.com/LinuxDevil/Android-Course-Dot/tree/Lecture_12S_QLite
-
-💀 Lecture 12 - SQLiteHelper:
-https://github.com/LinuxDevil/Android-Course-Dot/tree/lecture_12
-
-💀 Lecture 13:
-https://github.com/LinuxDevil/Android-Course-Dot/tree/lecture_13
diff --git a/_config.yml b/_config.yml
deleted file mode 100644
index fc24e7a..0000000
--- a/_config.yml
+++ /dev/null
@@ -1 +0,0 @@
-theme: jekyll-theme-hacker
\ No newline at end of file
diff --git a/app/.gitignore b/app/.gitignore
new file mode 100644
index 0000000..796b96d
--- /dev/null
+++ b/app/.gitignore
@@ -0,0 +1 @@
+/build
diff --git a/app/build.gradle b/app/build.gradle
new file mode 100644
index 0000000..db8258e
--- /dev/null
+++ b/app/build.gradle
@@ -0,0 +1,32 @@
+apply plugin: 'com.android.application'
+
+android {
+ compileSdkVersion 28
+ defaultConfig {
+ applicationId "alimohammad.com.firebase_lecture13"
+ minSdkVersion 15
+ targetSdkVersion 28
+ versionCode 1
+ versionName "1.0"
+ testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner"
+ }
+ buildTypes {
+ release {
+ minifyEnabled false
+ proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
+ }
+ }
+}
+
+dependencies {
+ implementation fileTree(dir: 'libs', include: ['*.jar'])
+ implementation 'com.android.support:appcompat-v7:28.0.0'
+ implementation 'com.android.support.constraint:constraint-layout:1.1.3'
+ implementation 'com.google.firebase:firebase-database:11.6.0'
+ implementation 'com.google.firebase:firebase-auth:11.6.0'
+ testImplementation 'junit:junit:4.12'
+ androidTestImplementation 'com.android.support.test:runner:1.0.2'
+ androidTestImplementation 'com.android.support.test.espresso:espresso-core:3.0.2'
+}
+
+apply plugin: 'com.google.gms.google-services'
diff --git a/app/google-services.json b/app/google-services.json
new file mode 100644
index 0000000..93c0e2a
--- /dev/null
+++ b/app/google-services.json
@@ -0,0 +1,55 @@
+{
+ "project_info": {
+ "project_number": "942627287496",
+ "firebase_url": "https://fir-lecture13.firebaseio.com",
+ "project_id": "fir-lecture13",
+ "storage_bucket": "fir-lecture13.appspot.com"
+ },
+ "client": [
+ {
+ "client_info": {
+ "mobilesdk_app_id": "1:942627287496:android:425ed8f3ee888d32",
+ "android_client_info": {
+ "package_name": "alimohammad.com.firebase_lecture13"
+ }
+ },
+ "oauth_client": [
+ {
+ "client_id": "942627287496-p9o0ckr3odrg5j66nn0nibg58o5fcsj1.apps.googleusercontent.com",
+ "client_type": 1,
+ "android_info": {
+ "package_name": "alimohammad.com.firebase_lecture13",
+ "certificate_hash": "99a503afb92c80e2c3d6193fbe8c7a6765b8ba2c"
+ }
+ },
+ {
+ "client_id": "942627287496-sln13re8a9ke8mq9otr4s4sf4epefmn1.apps.googleusercontent.com",
+ "client_type": 3
+ }
+ ],
+ "api_key": [
+ {
+ "current_key": "AIzaSyDY2JxwGEPy4kTzWJkEwBKNkKQTSrpc8Pw"
+ }
+ ],
+ "services": {
+ "analytics_service": {
+ "status": 1
+ },
+ "appinvite_service": {
+ "status": 2,
+ "other_platform_oauth_client": [
+ {
+ "client_id": "942627287496-sln13re8a9ke8mq9otr4s4sf4epefmn1.apps.googleusercontent.com",
+ "client_type": 3
+ }
+ ]
+ },
+ "ads_service": {
+ "status": 2
+ }
+ }
+ }
+ ],
+ "configuration_version": "1"
+}
\ No newline at end of file
diff --git a/app/proguard-rules.pro b/app/proguard-rules.pro
new file mode 100644
index 0000000..f1b4245
--- /dev/null
+++ b/app/proguard-rules.pro
@@ -0,0 +1,21 @@
+# Add project specific ProGuard rules here.
+# You can control the set of applied configuration files using the
+# proguardFiles setting in build.gradle.
+#
+# For more details, see
+# http://developer.android.com/guide/developing/tools/proguard.html
+
+# If your project uses WebView with JS, uncomment the following
+# and specify the fully qualified class name to the JavaScript interface
+# class:
+#-keepclassmembers class fqcn.of.javascript.interface.for.webview {
+# public *;
+#}
+
+# Uncomment this to preserve the line number information for
+# debugging stack traces.
+#-keepattributes SourceFile,LineNumberTable
+
+# If you keep the line number information, uncomment this to
+# hide the original source file name.
+#-renamesourcefileattribute SourceFile
diff --git a/app/src/androidTest/java/alimohammad/com/firebase_lecture13/ExampleInstrumentedTest.java b/app/src/androidTest/java/alimohammad/com/firebase_lecture13/ExampleInstrumentedTest.java
new file mode 100644
index 0000000..442e5b8
--- /dev/null
+++ b/app/src/androidTest/java/alimohammad/com/firebase_lecture13/ExampleInstrumentedTest.java
@@ -0,0 +1,26 @@
+package alimohammad.com.firebase_lecture13;
+
+import android.content.Context;
+import android.support.test.InstrumentationRegistry;
+import android.support.test.runner.AndroidJUnit4;
+
+import org.junit.Test;
+import org.junit.runner.RunWith;
+
+import static org.junit.Assert.*;
+
+/**
+ * Instrumented test, which will execute on an Android device.
+ *
+ * @see Testing documentation
+ */
+@RunWith(AndroidJUnit4.class)
+public class ExampleInstrumentedTest {
+ @Test
+ public void useAppContext() {
+ // Context of the app under test.
+ Context appContext = InstrumentationRegistry.getTargetContext();
+
+ assertEquals("alimohammad.com.firebase_lecture13", appContext.getPackageName());
+ }
+}
diff --git a/app/src/main/AndroidManifest.xml b/app/src/main/AndroidManifest.xml
new file mode 100644
index 0000000..b836d86
--- /dev/null
+++ b/app/src/main/AndroidManifest.xml
@@ -0,0 +1,24 @@
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
\ No newline at end of file
diff --git a/app/src/main/java/alimohammad/com/firebase_lecture13/Activities/MainActivity.java b/app/src/main/java/alimohammad/com/firebase_lecture13/Activities/MainActivity.java
new file mode 100644
index 0000000..fd18b8e
--- /dev/null
+++ b/app/src/main/java/alimohammad/com/firebase_lecture13/Activities/MainActivity.java
@@ -0,0 +1,160 @@
+package alimohammad.com.firebase_lecture13.Activities;
+
+import android.content.Intent;
+import android.support.annotation.NonNull;
+import android.support.v7.app.AppCompatActivity;
+import android.os.Bundle;
+import android.view.View;
+import android.widget.EditText;
+import android.widget.TextView;
+import android.widget.Toast;
+
+import com.google.android.gms.tasks.OnCompleteListener;
+import com.google.android.gms.tasks.OnFailureListener;
+import com.google.android.gms.tasks.Task;
+import com.google.firebase.auth.AuthResult;
+import com.google.firebase.auth.FirebaseAuth;
+import com.google.firebase.database.ChildEventListener;
+import com.google.firebase.database.DataSnapshot;
+import com.google.firebase.database.DatabaseError;
+import com.google.firebase.database.DatabaseReference;
+import com.google.firebase.database.FirebaseDatabase;
+
+import java.util.Date;
+
+import alimohammad.com.firebase_lecture13.Modals.User;
+import alimohammad.com.firebase_lecture13.R;
+
+
+//conquer001
+
+
+public class MainActivity extends AppCompatActivity {
+
+ FirebaseDatabase fireDB = FirebaseDatabase.getInstance();
+ DatabaseReference fireRef;
+ FirebaseAuth auth = FirebaseAuth.getInstance();
+ EditText email, password;
+ TextView errorTextView;
+
+ @Override
+ protected void onCreate(Bundle savedInstanceState) {
+ super.onCreate(savedInstanceState);
+ setContentView(R.layout.activity_main);
+
+ email = findViewById(R.id.username);
+ password = findViewById(R.id.password);
+ errorTextView = findViewById(R.id.errorTextView);
+
+ fireRef = fireDB.getReference("Users");
+
+
+ fireRef.addChildEventListener(new ChildEventListener() {
+ @Override
+ public void onChildAdded(DataSnapshot dataSnapshot, String s) {
+ User addedUser = dataSnapshot.getValue(User.class);
+ Toast.makeText(MainActivity.this, "new Child added: " + addedUser.getUsername(), Toast.LENGTH_SHORT).show();
+ }
+
+ @Override
+ public void onChildChanged(DataSnapshot dataSnapshot, String s) {
+ Toast.makeText(MainActivity.this, "Child Changed", Toast.LENGTH_SHORT).show();
+
+ }
+
+ @Override
+ public void onChildRemoved(DataSnapshot dataSnapshot) {
+ Toast.makeText(MainActivity.this, "Child removed", Toast.LENGTH_SHORT).show();
+ }
+
+ @Override
+ public void onChildMoved(DataSnapshot dataSnapshot, String s) {
+ Toast.makeText(MainActivity.this, "Child moved ", Toast.LENGTH_SHORT).show();
+
+ }
+
+ @Override
+ public void onCancelled(DatabaseError databaseError) {
+ Toast.makeText(MainActivity.this, "Child cancelled!", Toast.LENGTH_SHORT).show();
+ }
+ });
+
+//
+// fireRef.child(aliUser.getUsername()).setValue(aliUser).addOnCompleteListener(
+// new OnCompleteListener() {
+// @Override
+// public void onComplete(@NonNull Task task) {
+// Toast.makeText(MainActivity.this, "Task Successfull",
+// Toast.LENGTH_SHORT).show();
+// }
+// }).addOnFailureListener(new OnFailureListener() {
+// @Override
+// public void onFailure(@NonNull Exception e) {
+// Toast.makeText(MainActivity.this, e.getLocalizedMessage(),
+// Toast.LENGTH_SHORT).show();
+// }
+// });
+
+ }
+
+ public void addNewChild(View view) {
+
+
+ User aliUser = new User("alim", "123456", "",
+ new Date().toString());
+
+ aliUser.setUsername(aliUser.getUsername() + new Date().toString());
+
+ fireRef.child(aliUser.getUsername()).setValue(aliUser).addOnCompleteListener(
+ new OnCompleteListener() {
+ @Override
+ public void onComplete(@NonNull Task task) {
+ Toast.makeText(MainActivity.this, "Task Successfull",
+ Toast.LENGTH_SHORT).show();
+ }
+ }).addOnFailureListener(new OnFailureListener() {
+ @Override
+ public void onFailure(@NonNull Exception e) {
+ Toast.makeText(MainActivity.this, e.getLocalizedMessage(),
+ Toast.LENGTH_SHORT).show();
+ }
+ });
+ }
+
+ public void signUp(View view) {
+ auth.createUserWithEmailAndPassword(
+ email.getText().toString(),
+ password.getText().toString()
+ ).addOnFailureListener(new OnFailureListener() {
+ @Override
+ public void onFailure(@NonNull Exception e) {
+ errorTextView.setText(e.getLocalizedMessage());
+ }
+ });
+ }
+
+
+ public void login(View view){
+ auth.signInWithEmailAndPassword(email.getText().toString(),
+ password.getText().toString()).addOnFailureListener(
+ new OnFailureListener() {
+ @Override
+ public void onFailure(@NonNull Exception e) {
+ errorTextView.setText(e.getLocalizedMessage());
+ }
+ }
+
+ ).addOnCompleteListener(new OnCompleteListener() {
+ @Override
+ public void onComplete(@NonNull Task task) {
+ errorTextView.setText("Login Successful");
+
+ }
+ });
+
+ Intent i = new Intent(this, Messages.class);
+ startActivity(i);
+
+ }
+
+}
\ No newline at end of file
diff --git a/app/src/main/java/alimohammad/com/firebase_lecture13/Activities/Messages.java b/app/src/main/java/alimohammad/com/firebase_lecture13/Activities/Messages.java
new file mode 100644
index 0000000..d45d919
--- /dev/null
+++ b/app/src/main/java/alimohammad/com/firebase_lecture13/Activities/Messages.java
@@ -0,0 +1,82 @@
+package alimohammad.com.firebase_lecture13.Activities;
+
+import alimohammad.com.firebase_lecture13.Modals.Message;
+import android.support.v7.app.AppCompatActivity;
+import android.os.Bundle;
+import android.view.View;
+import android.widget.ArrayAdapter;
+import android.widget.EditText;
+import android.widget.ListView;
+
+import com.google.firebase.auth.FirebaseAuth;
+import com.google.firebase.database.ChildEventListener;
+import com.google.firebase.database.DataSnapshot;
+import com.google.firebase.database.DatabaseError;
+import com.google.firebase.database.DatabaseReference;
+import com.google.firebase.database.FirebaseDatabase;
+
+import java.util.ArrayList;
+import java.util.Date;
+
+import alimohammad.com.firebase_lecture13.R;
+
+public class Messages extends AppCompatActivity {
+
+ ListView listView;
+ ArrayList messages;
+ EditText messageEditText;
+
+ FirebaseDatabase db = FirebaseDatabase.getInstance();
+ DatabaseReference ref = db.getReference("Messages");
+
+ FirebaseAuth auth = FirebaseAuth.getInstance();
+
+ @Override
+ protected void onCreate(Bundle savedInstanceState) {
+ super.onCreate(savedInstanceState);
+ setContentView(R.layout.activity_messages);
+
+ listView = findViewById(R.id.listView);
+ messageEditText = findViewById(R.id.messageEditText);
+ messages = new ArrayList<>();
+
+ final ArrayAdapter adapter = new ArrayAdapter<>(this,android.R.layout.simple_list_item_1,messages);
+ listView.setAdapter(adapter);
+
+ ref.addChildEventListener(new ChildEventListener() {
+ @Override
+ public void onChildAdded(DataSnapshot dataSnapshot, String s) {
+ Message message = dataSnapshot.getValue(Message.class);
+ messages.add(message.getMessage());
+ adapter.notifyDataSetChanged();
+ }
+
+ @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) {
+
+ }
+ });
+
+ }
+
+ public void sendMessage(View view){
+// auth.getCurrentUser().getEmail()
+ ref.child(new Date().toString()).setValue(new Message(messageEditText.getText().toString(),"assd"));
+ }
+
+}
diff --git a/app/src/main/java/alimohammad/com/firebase_lecture13/Modals/Message.java b/app/src/main/java/alimohammad/com/firebase_lecture13/Modals/Message.java
new file mode 100644
index 0000000..0e60634
--- /dev/null
+++ b/app/src/main/java/alimohammad/com/firebase_lecture13/Modals/Message.java
@@ -0,0 +1,23 @@
+package alimohammad.com.firebase_lecture13.Modals;
+
+public class Message {
+
+ String message;
+ String sender;
+
+ public Message() {
+ }
+
+ public Message(String message, String sender) {
+ this.message = message;
+ this.sender = sender;
+ }
+
+ public String getMessage() {
+ return message;
+ }
+
+ public String getSender() {
+ return sender;
+ }
+}
diff --git a/app/src/main/java/alimohammad/com/firebase_lecture13/Modals/User.java b/app/src/main/java/alimohammad/com/firebase_lecture13/Modals/User.java
new file mode 100644
index 0000000..029546a
--- /dev/null
+++ b/app/src/main/java/alimohammad/com/firebase_lecture13/Modals/User.java
@@ -0,0 +1,41 @@
+package alimohammad.com.firebase_lecture13.Modals;
+
+public class User {
+
+ private String username;
+ private String password;
+ private String message;
+ private String dateOfSend;
+
+
+ public void setUsername(String username){
+ this.username = username;
+ }
+
+ public User(){
+ //For Firebase Database
+ }
+
+ public User(String username, String password, String message, String dateOfSend) {
+ this.username = username;
+ this.password = password;
+ this.message = message;
+ this.dateOfSend = dateOfSend;
+ }
+
+ public String getUsername() {
+ return username;
+ }
+
+ public String getPassword() {
+ return password;
+ }
+
+ public String getMessage() {
+ return message;
+ }
+
+ public String getDateOfSend() {
+ return dateOfSend;
+ }
+}
diff --git a/app/src/main/res/drawable-v24/ic_launcher_foreground.xml b/app/src/main/res/drawable-v24/ic_launcher_foreground.xml
new file mode 100644
index 0000000..c7bd21d
--- /dev/null
+++ b/app/src/main/res/drawable-v24/ic_launcher_foreground.xml
@@ -0,0 +1,34 @@
+
+
+
+
+
+
+
+
+
+
+
diff --git a/app/src/main/res/drawable/button_shape.xml b/app/src/main/res/drawable/button_shape.xml
new file mode 100644
index 0000000..1dfa32c
--- /dev/null
+++ b/app/src/main/res/drawable/button_shape.xml
@@ -0,0 +1,14 @@
+
+
+
+
+
+
+
+
+
+
\ No newline at end of file
diff --git a/app/src/main/res/drawable/ic_launcher_background.xml b/app/src/main/res/drawable/ic_launcher_background.xml
new file mode 100644
index 0000000..d5fccc5
--- /dev/null
+++ b/app/src/main/res/drawable/ic_launcher_background.xml
@@ -0,0 +1,170 @@
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
diff --git a/app/src/main/res/layout/activity_main.xml b/app/src/main/res/layout/activity_main.xml
new file mode 100644
index 0000000..0ae7819
--- /dev/null
+++ b/app/src/main/res/layout/activity_main.xml
@@ -0,0 +1,61 @@
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
\ No newline at end of file
diff --git a/app/src/main/res/layout/activity_messages.xml b/app/src/main/res/layout/activity_messages.xml
new file mode 100644
index 0000000..3b2f09a
--- /dev/null
+++ b/app/src/main/res/layout/activity_messages.xml
@@ -0,0 +1,34 @@
+
+
+
+
+
+
+
+
+
+
+
+
+
+
\ No newline at end of file
diff --git a/app/src/main/res/mipmap-anydpi-v26/ic_launcher.xml b/app/src/main/res/mipmap-anydpi-v26/ic_launcher.xml
new file mode 100644
index 0000000..eca70cf
--- /dev/null
+++ b/app/src/main/res/mipmap-anydpi-v26/ic_launcher.xml
@@ -0,0 +1,5 @@
+
+
+
+
+
\ No newline at end of file
diff --git a/app/src/main/res/mipmap-anydpi-v26/ic_launcher_round.xml b/app/src/main/res/mipmap-anydpi-v26/ic_launcher_round.xml
new file mode 100644
index 0000000..eca70cf
--- /dev/null
+++ b/app/src/main/res/mipmap-anydpi-v26/ic_launcher_round.xml
@@ -0,0 +1,5 @@
+
+
+
+
+
\ No newline at end of file
diff --git a/app/src/main/res/mipmap-hdpi/ic_launcher.png b/app/src/main/res/mipmap-hdpi/ic_launcher.png
new file mode 100644
index 0000000..a2f5908
Binary files /dev/null and b/app/src/main/res/mipmap-hdpi/ic_launcher.png differ
diff --git a/app/src/main/res/mipmap-hdpi/ic_launcher_round.png b/app/src/main/res/mipmap-hdpi/ic_launcher_round.png
new file mode 100644
index 0000000..1b52399
Binary files /dev/null and b/app/src/main/res/mipmap-hdpi/ic_launcher_round.png differ
diff --git a/app/src/main/res/mipmap-mdpi/ic_launcher.png b/app/src/main/res/mipmap-mdpi/ic_launcher.png
new file mode 100644
index 0000000..ff10afd
Binary files /dev/null and b/app/src/main/res/mipmap-mdpi/ic_launcher.png differ
diff --git a/app/src/main/res/mipmap-mdpi/ic_launcher_round.png b/app/src/main/res/mipmap-mdpi/ic_launcher_round.png
new file mode 100644
index 0000000..115a4c7
Binary files /dev/null and b/app/src/main/res/mipmap-mdpi/ic_launcher_round.png differ
diff --git a/app/src/main/res/mipmap-xhdpi/ic_launcher.png b/app/src/main/res/mipmap-xhdpi/ic_launcher.png
new file mode 100644
index 0000000..dcd3cd8
Binary files /dev/null and b/app/src/main/res/mipmap-xhdpi/ic_launcher.png differ
diff --git a/app/src/main/res/mipmap-xhdpi/ic_launcher_round.png b/app/src/main/res/mipmap-xhdpi/ic_launcher_round.png
new file mode 100644
index 0000000..459ca60
Binary files /dev/null and b/app/src/main/res/mipmap-xhdpi/ic_launcher_round.png differ
diff --git a/app/src/main/res/mipmap-xxhdpi/ic_launcher.png b/app/src/main/res/mipmap-xxhdpi/ic_launcher.png
new file mode 100644
index 0000000..8ca12fe
Binary files /dev/null and b/app/src/main/res/mipmap-xxhdpi/ic_launcher.png differ
diff --git a/app/src/main/res/mipmap-xxhdpi/ic_launcher_round.png b/app/src/main/res/mipmap-xxhdpi/ic_launcher_round.png
new file mode 100644
index 0000000..8e19b41
Binary files /dev/null and b/app/src/main/res/mipmap-xxhdpi/ic_launcher_round.png differ
diff --git a/app/src/main/res/mipmap-xxxhdpi/ic_launcher.png b/app/src/main/res/mipmap-xxxhdpi/ic_launcher.png
new file mode 100644
index 0000000..b824ebd
Binary files /dev/null and b/app/src/main/res/mipmap-xxxhdpi/ic_launcher.png differ
diff --git a/app/src/main/res/mipmap-xxxhdpi/ic_launcher_round.png b/app/src/main/res/mipmap-xxxhdpi/ic_launcher_round.png
new file mode 100644
index 0000000..4c19a13
Binary files /dev/null and b/app/src/main/res/mipmap-xxxhdpi/ic_launcher_round.png differ
diff --git a/app/src/main/res/values/colors.xml b/app/src/main/res/values/colors.xml
new file mode 100644
index 0000000..a544445
--- /dev/null
+++ b/app/src/main/res/values/colors.xml
@@ -0,0 +1,36 @@
+
+
+ #3F51B5
+ #303F9F
+ #FF4081
+ #D4D3D3
+ #B0B0B0
+ #000000
+ #C0C0C0
+ #8E8E38
+ #71C671
+ #556B2F
+ #ADFF2F
+ #00EE00
+ #8B0000
+ #FF0000
+ #8B2323
+ #8B4513
+ #EE7600
+ #FF8000
+ #FFB90F
+ #FFD700
+ #FFFF00
+ #CDCD00
+ #F5F5DC
+ #40E0D0
+ #BFEFFF
+ #00BFFF
+ #104E8B
+ #000080
+ #551A8B
+ #800080
+ #FF1493
+ #FF69B4
+
+
diff --git a/app/src/main/res/values/strings.xml b/app/src/main/res/values/strings.xml
new file mode 100644
index 0000000..82cb91c
--- /dev/null
+++ b/app/src/main/res/values/strings.xml
@@ -0,0 +1,3 @@
+
+ Firebase_Lecture13
+
diff --git a/app/src/main/res/values/styles.xml b/app/src/main/res/values/styles.xml
new file mode 100644
index 0000000..5885930
--- /dev/null
+++ b/app/src/main/res/values/styles.xml
@@ -0,0 +1,11 @@
+
+
+
+
+
+
diff --git a/app/src/test/java/alimohammad/com/firebase_lecture13/ExampleUnitTest.java b/app/src/test/java/alimohammad/com/firebase_lecture13/ExampleUnitTest.java
new file mode 100644
index 0000000..30f14b5
--- /dev/null
+++ b/app/src/test/java/alimohammad/com/firebase_lecture13/ExampleUnitTest.java
@@ -0,0 +1,17 @@
+package alimohammad.com.firebase_lecture13;
+
+import org.junit.Test;
+
+import static org.junit.Assert.*;
+
+/**
+ * Example local unit test, which will execute on the development machine (host).
+ *
+ * @see Testing documentation
+ */
+public class ExampleUnitTest {
+ @Test
+ public void addition_isCorrect() {
+ assertEquals(4, 2 + 2);
+ }
+}
\ No newline at end of file
diff --git a/build.gradle b/build.gradle
new file mode 100644
index 0000000..b6e331a
--- /dev/null
+++ b/build.gradle
@@ -0,0 +1,28 @@
+// Top-level build file where you can add configuration options common to all sub-projects/modules.
+
+buildscript {
+
+ repositories {
+ google()
+ jcenter()
+ }
+ dependencies {
+ classpath 'com.android.tools.build:gradle:3.1.4'
+
+
+ // NOTE: Do not place your application dependencies here; they belong
+ // in the individual module build.gradle files
+ classpath 'com.google.gms:google-services:3.1.1'
+ }
+}
+
+allprojects {
+ repositories {
+ google()
+ jcenter()
+ }
+}
+
+task clean(type: Delete) {
+ delete rootProject.buildDir
+}
diff --git a/gradle.properties b/gradle.properties
new file mode 100644
index 0000000..743d692
--- /dev/null
+++ b/gradle.properties
@@ -0,0 +1,13 @@
+# Project-wide Gradle settings.
+# IDE (e.g. Android Studio) users:
+# Gradle settings configured through the IDE *will override*
+# any settings specified in this file.
+# For more details on how to configure your build environment visit
+# http://www.gradle.org/docs/current/userguide/build_environment.html
+# Specifies the JVM arguments used for the daemon process.
+# The setting is particularly useful for tweaking memory settings.
+org.gradle.jvmargs=-Xmx1536m
+# When configured, Gradle will run in incubating parallel mode.
+# This option should only be used with decoupled projects. More details, visit
+# http://www.gradle.org/docs/current/userguide/multi_project_builds.html#sec:decoupled_projects
+# org.gradle.parallel=true
diff --git a/gradle/wrapper/gradle-wrapper.jar b/gradle/wrapper/gradle-wrapper.jar
new file mode 100644
index 0000000..7a3265e
Binary files /dev/null and b/gradle/wrapper/gradle-wrapper.jar differ
diff --git a/gradle/wrapper/gradle-wrapper.properties b/gradle/wrapper/gradle-wrapper.properties
new file mode 100644
index 0000000..23b0892
--- /dev/null
+++ b/gradle/wrapper/gradle-wrapper.properties
@@ -0,0 +1,6 @@
+#Wed Sep 26 17:20:31 EEST 2018
+distributionBase=GRADLE_USER_HOME
+distributionPath=wrapper/dists
+zipStoreBase=GRADLE_USER_HOME
+zipStorePath=wrapper/dists
+distributionUrl=https\://services.gradle.org/distributions/gradle-4.4-all.zip
diff --git a/gradlew b/gradlew
new file mode 100644
index 0000000..cccdd3d
--- /dev/null
+++ b/gradlew
@@ -0,0 +1,172 @@
+#!/usr/bin/env sh
+
+##############################################################################
+##
+## Gradle start up script for UN*X
+##
+##############################################################################
+
+# Attempt to set APP_HOME
+# Resolve links: $0 may be a link
+PRG="$0"
+# Need this for relative symlinks.
+while [ -h "$PRG" ] ; do
+ ls=`ls -ld "$PRG"`
+ link=`expr "$ls" : '.*-> \(.*\)$'`
+ if expr "$link" : '/.*' > /dev/null; then
+ PRG="$link"
+ else
+ PRG=`dirname "$PRG"`"/$link"
+ fi
+done
+SAVED="`pwd`"
+cd "`dirname \"$PRG\"`/" >/dev/null
+APP_HOME="`pwd -P`"
+cd "$SAVED" >/dev/null
+
+APP_NAME="Gradle"
+APP_BASE_NAME=`basename "$0"`
+
+# Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
+DEFAULT_JVM_OPTS=""
+
+# Use the maximum available, or set MAX_FD != -1 to use that value.
+MAX_FD="maximum"
+
+warn () {
+ echo "$*"
+}
+
+die () {
+ echo
+ echo "$*"
+ echo
+ exit 1
+}
+
+# OS specific support (must be 'true' or 'false').
+cygwin=false
+msys=false
+darwin=false
+nonstop=false
+case "`uname`" in
+ CYGWIN* )
+ cygwin=true
+ ;;
+ Darwin* )
+ darwin=true
+ ;;
+ MINGW* )
+ msys=true
+ ;;
+ NONSTOP* )
+ nonstop=true
+ ;;
+esac
+
+CLASSPATH=$APP_HOME/gradle/wrapper/gradle-wrapper.jar
+
+# Determine the Java command to use to start the JVM.
+if [ -n "$JAVA_HOME" ] ; then
+ if [ -x "$JAVA_HOME/jre/sh/java" ] ; then
+ # IBM's JDK on AIX uses strange locations for the executables
+ JAVACMD="$JAVA_HOME/jre/sh/java"
+ else
+ JAVACMD="$JAVA_HOME/bin/java"
+ fi
+ if [ ! -x "$JAVACMD" ] ; then
+ die "ERROR: JAVA_HOME is set to an invalid directory: $JAVA_HOME
+
+Please set the JAVA_HOME variable in your environment to match the
+location of your Java installation."
+ fi
+else
+ JAVACMD="java"
+ which java >/dev/null 2>&1 || die "ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH.
+
+Please set the JAVA_HOME variable in your environment to match the
+location of your Java installation."
+fi
+
+# Increase the maximum file descriptors if we can.
+if [ "$cygwin" = "false" -a "$darwin" = "false" -a "$nonstop" = "false" ] ; then
+ MAX_FD_LIMIT=`ulimit -H -n`
+ if [ $? -eq 0 ] ; then
+ if [ "$MAX_FD" = "maximum" -o "$MAX_FD" = "max" ] ; then
+ MAX_FD="$MAX_FD_LIMIT"
+ fi
+ ulimit -n $MAX_FD
+ if [ $? -ne 0 ] ; then
+ warn "Could not set maximum file descriptor limit: $MAX_FD"
+ fi
+ else
+ warn "Could not query maximum file descriptor limit: $MAX_FD_LIMIT"
+ fi
+fi
+
+# For Darwin, add options to specify how the application appears in the dock
+if $darwin; then
+ GRADLE_OPTS="$GRADLE_OPTS \"-Xdock:name=$APP_NAME\" \"-Xdock:icon=$APP_HOME/media/gradle.icns\""
+fi
+
+# For Cygwin, switch paths to Windows format before running java
+if $cygwin ; then
+ APP_HOME=`cygpath --path --mixed "$APP_HOME"`
+ CLASSPATH=`cygpath --path --mixed "$CLASSPATH"`
+ JAVACMD=`cygpath --unix "$JAVACMD"`
+
+ # We build the pattern for arguments to be converted via cygpath
+ ROOTDIRSRAW=`find -L / -maxdepth 1 -mindepth 1 -type d 2>/dev/null`
+ SEP=""
+ for dir in $ROOTDIRSRAW ; do
+ ROOTDIRS="$ROOTDIRS$SEP$dir"
+ SEP="|"
+ done
+ OURCYGPATTERN="(^($ROOTDIRS))"
+ # Add a user-defined pattern to the cygpath arguments
+ if [ "$GRADLE_CYGPATTERN" != "" ] ; then
+ OURCYGPATTERN="$OURCYGPATTERN|($GRADLE_CYGPATTERN)"
+ fi
+ # Now convert the arguments - kludge to limit ourselves to /bin/sh
+ i=0
+ for arg in "$@" ; do
+ CHECK=`echo "$arg"|egrep -c "$OURCYGPATTERN" -`
+ CHECK2=`echo "$arg"|egrep -c "^-"` ### Determine if an option
+
+ if [ $CHECK -ne 0 ] && [ $CHECK2 -eq 0 ] ; then ### Added a condition
+ eval `echo args$i`=`cygpath --path --ignore --mixed "$arg"`
+ else
+ eval `echo args$i`="\"$arg\""
+ fi
+ i=$((i+1))
+ done
+ case $i in
+ (0) set -- ;;
+ (1) set -- "$args0" ;;
+ (2) set -- "$args0" "$args1" ;;
+ (3) set -- "$args0" "$args1" "$args2" ;;
+ (4) set -- "$args0" "$args1" "$args2" "$args3" ;;
+ (5) set -- "$args0" "$args1" "$args2" "$args3" "$args4" ;;
+ (6) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" ;;
+ (7) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" ;;
+ (8) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" "$args7" ;;
+ (9) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" "$args7" "$args8" ;;
+ esac
+fi
+
+# Escape application args
+save () {
+ for i do printf %s\\n "$i" | sed "s/'/'\\\\''/g;1s/^/'/;\$s/\$/' \\\\/" ; done
+ echo " "
+}
+APP_ARGS=$(save "$@")
+
+# Collect all arguments for the java command, following the shell quoting and substitution rules
+eval set -- $DEFAULT_JVM_OPTS $JAVA_OPTS $GRADLE_OPTS "\"-Dorg.gradle.appname=$APP_BASE_NAME\"" -classpath "\"$CLASSPATH\"" org.gradle.wrapper.GradleWrapperMain "$APP_ARGS"
+
+# by default we should be in the correct project dir, but when run from Finder on Mac, the cwd is wrong
+if [ "$(uname)" = "Darwin" ] && [ "$HOME" = "$PWD" ]; then
+ cd "$(dirname "$0")"
+fi
+
+exec "$JAVACMD" "$@"
diff --git a/gradlew.bat b/gradlew.bat
new file mode 100644
index 0000000..f955316
--- /dev/null
+++ b/gradlew.bat
@@ -0,0 +1,84 @@
+@if "%DEBUG%" == "" @echo off
+@rem ##########################################################################
+@rem
+@rem Gradle startup script for Windows
+@rem
+@rem ##########################################################################
+
+@rem Set local scope for the variables with windows NT shell
+if "%OS%"=="Windows_NT" setlocal
+
+set DIRNAME=%~dp0
+if "%DIRNAME%" == "" set DIRNAME=.
+set APP_BASE_NAME=%~n0
+set APP_HOME=%DIRNAME%
+
+@rem Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
+set DEFAULT_JVM_OPTS=
+
+@rem Find java.exe
+if defined JAVA_HOME goto findJavaFromJavaHome
+
+set JAVA_EXE=java.exe
+%JAVA_EXE% -version >NUL 2>&1
+if "%ERRORLEVEL%" == "0" goto init
+
+echo.
+echo ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH.
+echo.
+echo Please set the JAVA_HOME variable in your environment to match the
+echo location of your Java installation.
+
+goto fail
+
+:findJavaFromJavaHome
+set JAVA_HOME=%JAVA_HOME:"=%
+set JAVA_EXE=%JAVA_HOME%/bin/java.exe
+
+if exist "%JAVA_EXE%" goto init
+
+echo.
+echo ERROR: JAVA_HOME is set to an invalid directory: %JAVA_HOME%
+echo.
+echo Please set the JAVA_HOME variable in your environment to match the
+echo location of your Java installation.
+
+goto fail
+
+:init
+@rem Get command-line arguments, handling Windows variants
+
+if not "%OS%" == "Windows_NT" goto win9xME_args
+
+:win9xME_args
+@rem Slurp the command line arguments.
+set CMD_LINE_ARGS=
+set _SKIP=2
+
+:win9xME_args_slurp
+if "x%~1" == "x" goto execute
+
+set CMD_LINE_ARGS=%*
+
+:execute
+@rem Setup the command line
+
+set CLASSPATH=%APP_HOME%\gradle\wrapper\gradle-wrapper.jar
+
+@rem Execute Gradle
+"%JAVA_EXE%" %DEFAULT_JVM_OPTS% %JAVA_OPTS% %GRADLE_OPTS% "-Dorg.gradle.appname=%APP_BASE_NAME%" -classpath "%CLASSPATH%" org.gradle.wrapper.GradleWrapperMain %CMD_LINE_ARGS%
+
+:end
+@rem End local scope for the variables with windows NT shell
+if "%ERRORLEVEL%"=="0" goto mainEnd
+
+:fail
+rem Set variable GRADLE_EXIT_CONSOLE if you need the _script_ return code instead of
+rem the _cmd.exe /c_ return code!
+if not "" == "%GRADLE_EXIT_CONSOLE%" exit 1
+exit /b 1
+
+:mainEnd
+if "%OS%"=="Windows_NT" endlocal
+
+:omega
diff --git a/settings.gradle b/settings.gradle
new file mode 100644
index 0000000..e7b4def
--- /dev/null
+++ b/settings.gradle
@@ -0,0 +1 @@
+include ':app'