diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..39fb081
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1,9 @@
+*.iml
+.gradle
+/local.properties
+/.idea/workspace.xml
+/.idea/libraries
+.DS_Store
+/build
+/captures
+.externalNativeBuild
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..37a7509
--- /dev/null
+++ b/.idea/misc.xml
@@ -0,0 +1,9 @@
+
+
+
+
+
+
+
+
+
\ No newline at end of file
diff --git a/.idea/modules.xml b/.idea/modules.xml
new file mode 100644
index 0000000..c2be8a8
--- /dev/null
+++ b/.idea/modules.xml
@@ -0,0 +1,9 @@
+
+
+
+
+
+
+
+
+
\ 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/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..67dbc22
--- /dev/null
+++ b/app/build.gradle
@@ -0,0 +1,28 @@
+apply plugin: 'com.android.application'
+
+android {
+ compileSdkVersion 26
+ defaultConfig {
+ applicationId "com.example.nishant.braintrainerapp"
+ minSdkVersion 15
+ targetSdkVersion 26
+ 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-v7:26.1.0'
+ implementation 'com.android.support.constraint:constraint-layout:1.0.2'
+ testImplementation 'junit:junit:4.12'
+ androidTestImplementation 'com.android.support.test:runner:1.0.1'
+ androidTestImplementation 'com.android.support.test.espresso:espresso-core:3.0.1'
+}
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/com/example/nishant/braintrainerapp/ExampleInstrumentedTest.java b/app/src/androidTest/java/com/example/nishant/braintrainerapp/ExampleInstrumentedTest.java
new file mode 100644
index 0000000..bb3089e
--- /dev/null
+++ b/app/src/androidTest/java/com/example/nishant/braintrainerapp/ExampleInstrumentedTest.java
@@ -0,0 +1,26 @@
+package com.example.nishant.braintrainerapp;
+
+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() throws Exception {
+ // Context of the app under test.
+ Context appContext = InstrumentationRegistry.getTargetContext();
+
+ assertEquals("com.example.nishant.braintrainerapp", appContext.getPackageName());
+ }
+}
diff --git a/app/src/main/AndroidManifest.xml b/app/src/main/AndroidManifest.xml
new file mode 100644
index 0000000..a5dfc14
--- /dev/null
+++ b/app/src/main/AndroidManifest.xml
@@ -0,0 +1,21 @@
+
+
+
+
+
+
+
+
+
+
+
+
+
+
\ No newline at end of file
diff --git a/app/src/main/java/com/example/nishant/braintrainerapp/MainActivity.java b/app/src/main/java/com/example/nishant/braintrainerapp/MainActivity.java
new file mode 100644
index 0000000..2d802cb
--- /dev/null
+++ b/app/src/main/java/com/example/nishant/braintrainerapp/MainActivity.java
@@ -0,0 +1,161 @@
+package com.example.nishant.braintrainerapp;
+
+import android.os.CountDownTimer;
+import android.support.v7.app.AppCompatActivity;
+import android.os.Bundle;
+import android.text.Layout;
+import android.view.View;
+import android.widget.Button;
+import android.widget.TextView;
+import android.widget.Toast;
+
+import java.util.ArrayList;
+import java.util.Random;
+
+public class MainActivity extends AppCompatActivity {
+
+ Button goButton;
+ TextView timerTextView;
+ TextView scoreTextView;
+ TextView questionTextView;
+ Button button0;
+ Button button1;
+ Button button2;
+ Button button3;
+ Button playAgain;
+ TextView resultTextView;
+ View gridlayout;
+ int correctAnswerLocation;
+ ArrayList answers;
+ int incorrectAnswer;
+ int questionCounter;
+ int scoreCounter;
+ boolean isTimerOn;
+ CountDownTimer timer;
+
+
+ public void playAgain(View view) {
+ playAgain.setVisibility(View.INVISIBLE);
+ gameStart(view);
+
+ }
+
+ public void nextQuestion() {
+ answers = new ArrayList();
+ Random rand = new Random();
+ int qnum0 = rand.nextInt(50);
+ int qnum1 = rand.nextInt(50);
+
+ questionTextView.setText(Integer.toString(qnum0) + " + " + Integer.toString(qnum1));
+
+ correctAnswerLocation = rand.nextInt(4);
+
+ for (int i = 0; i < 4; i++) {
+ if (i == correctAnswerLocation) {
+ answers.add(qnum0 + qnum1);
+ } else {
+ incorrectAnswer = rand.nextInt(100);
+ while (incorrectAnswer == qnum0 + qnum1) {
+ incorrectAnswer = rand.nextInt(100);
+ }
+ answers.add(incorrectAnswer);
+ }
+ }
+ button0.setText(Integer.toString(answers.get(0)));
+ button1.setText(Integer.toString(answers.get(1)));
+ button2.setText(Integer.toString(answers.get(2)));
+ button3.setText(Integer.toString(answers.get(3)));
+ }
+
+
+
+
+ public void checkAnswer(View v) {
+ if(isTimerOn) {
+ questionCounter++;
+ if (v.getTag().toString().equalsIgnoreCase(Integer.toString(correctAnswerLocation))) {
+ resultTextView.setVisibility(v.VISIBLE);
+ Toast.makeText(this, "CORRECT", Toast.LENGTH_SHORT).show();
+ scoreCounter++;
+ scoreTextView.setText(Integer.toString(scoreCounter) + "/" + Integer.toString(questionCounter));
+ } else {
+ resultTextView.setVisibility(v.VISIBLE);
+ Toast.makeText(this, "INCORRECT", Toast.LENGTH_SHORT).show();
+ scoreTextView.setText(Integer.toString(scoreCounter) + "/" + Integer.toString(questionCounter));
+ }
+ resultTextView.setVisibility(v.INVISIBLE);
+ nextQuestion();
+ }
+ }
+
+
+
+ public void gameStart(View view) {
+ questionCounter = 0;
+ scoreCounter = 0;
+
+ goButton.setVisibility(View.INVISIBLE);
+
+ timerTextView.setVisibility(View.VISIBLE);
+ scoreTextView.setVisibility(View.VISIBLE);
+ scoreTextView.setText(Integer.toString(scoreCounter) +" / " + Integer.toString(questionCounter));
+ questionTextView.setVisibility(View.VISIBLE);
+ gridlayout.setVisibility(View.VISIBLE);
+ resultTextView.setVisibility(View.INVISIBLE);
+ playAgain.setVisibility(View.INVISIBLE);
+ isTimerOn = true;
+
+ //Start timer
+ timer = new CountDownTimer(10000 + 4, 1000) {
+
+ @Override
+ public void onTick(long l) {
+ if((l/1000) > 9 ) {
+ timerTextView.setText((String.valueOf(l / 1000) + "s"));
+ }
+ else
+ {
+ timerTextView.setText(("0" + String.valueOf(l / 1000) + "s"));
+ }
+ }
+
+ @Override
+ public void onFinish() {
+ timerTextView.setText("00s");
+ //Stop generating further questions.
+ isTimerOn = false;
+ //Update the final score.
+ resultTextView.setVisibility(View.VISIBLE);
+ double score = scoreCounter;
+ double scorePercent = (Math.round((score/questionCounter)*100));
+ scorePercent = (int)scorePercent;
+ resultTextView.setText("Your Score: " + scorePercent + "%");
+ //Option to reStart the game.
+ playAgain.setVisibility(View.VISIBLE);
+ timer.cancel();
+ }
+ }.start();
+
+ nextQuestion();
+ }
+
+
+ @Override
+ protected void onCreate(Bundle savedInstanceState) {
+ super.onCreate(savedInstanceState);
+ setContentView(R.layout.activity_main);
+ goButton = (Button) findViewById(R.id.goButton);
+ timerTextView = (TextView) findViewById(R.id.timerTextView);
+ scoreTextView = (TextView) findViewById(R.id.socreTextView);
+ questionTextView = (TextView) findViewById(R.id.questionTextView);
+ resultTextView = (TextView) findViewById(R.id.resultTextView);
+ gridlayout = (View) findViewById(R.id.gridlayout);
+ button0 = (Button) findViewById(R.id.button0);
+ button1 = (Button) findViewById(R.id.button1);
+ button2 = (Button) findViewById(R.id.button2);
+ button3 = (Button) findViewById(R.id.button3);
+ playAgain = (Button) findViewById(R.id.playAgainButton);
+ playAgain.setVisibility(View.INVISIBLE);
+
+ }
+}
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 @@
+
+
+
+
+