arithmatic part completed

.gitignore

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+*.iml
+.gradle
+/local.properties
+/.idea/caches
+/.idea/libraries
+/.idea/modules.xml
+/.idea/workspace.xml
+/.idea/navEditor.xml
+/.idea/assetWizardSettings.xml
+.DS_Store
+/build
+/captures
+.externalNativeBuild
+.cxx
+local.properties

app/.gitignore

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+/build

app/build.gradle

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+plugins {
+    id 'com.android.application'
+}
+
+android {
+    compileSdk 34
+
+    defaultConfig {
+        applicationId "com.mahiapps.fmath"
+        minSdk 21
+        targetSdk 33
+        versionCode 1
+        versionName "1.0"
+
+        testInstrumentationRunner "androidx.test.runner.AndroidJUnitRunner"
+    }
+
+    buildTypes {
+        release {
+            minifyEnabled false
+            proguardFiles getDefaultProguardFile('proguard-android-optimize.txt'), 'proguard-rules.pro'
+        }
+    }
+    compileOptions {
+        sourceCompatibility JavaVersion.VERSION_1_8
+        targetCompatibility JavaVersion.VERSION_1_8
+    }
+}
+
+dependencies {
+
+    implementation 'androidx.appcompat:appcompat:1.6.1'
+    implementation 'com.google.android.material:material:1.10.0'
+    implementation 'androidx.constraintlayout:constraintlayout:2.1.4'
+    testImplementation 'junit:junit:4.13.2'
+    androidTestImplementation 'androidx.test.ext:junit:1.1.5'
+    androidTestImplementation 'androidx.test.espresso:espresso-core:3.5.1'
+}

app/proguard-rules.pro

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+# 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

app/src/androidTest/java/com/mahiapps/fmath/ExampleInstrumentedTest.java

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+package com.mahiapps.fmath;
+
+import android.content.Context;
+
+import androidx.test.platform.app.InstrumentationRegistry;
+import androidx.test.ext.junit.runners.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 <a href="http://d.android.com/tools/testing">Testing documentation</a>
+ */
+@RunWith(AndroidJUnit4.class)
+public class ExampleInstrumentedTest {
+    @Test
+    public void useAppContext() {
+        // Context of the app under test.
+        Context appContext = InstrumentationRegistry.getInstrumentation().getTargetContext();
+        assertEquals("com.mahiapps.fmath", appContext.getPackageName());
+    }
+}

app/src/main/AndroidManifest.xml

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+<?xml version="1.0" encoding="utf-8"?>
+<manifest xmlns:android="http://schemas.android.com/apk/res/android"
+    package="com.mahiapps.fmath">
+
+    <application
+        android:allowBackup="true"
+        android:icon="@drawable/arithmetic"
+        android:label="@string/app_name"
+        android:roundIcon="@drawable/arithmetic"
+        android:supportsRtl="true"
+        android:theme="@style/Theme.FMath">
+        <activity
+            android:name=".Activities.TableActivity"
+            android:exported="false" />
+        <activity
+            android:name=".Activities.PlayActivity"
+            android:exported="false" />
+        <activity
+            android:name=".Activities.ArithmeticActivity"
+            android:exported="false" />
+        <activity
+            android:name=".Activities.MainActivity"
+            android:exported="true">
+            <intent-filter>
+                <action android:name="android.intent.action.MAIN" />
+
+                <category android:name="android.intent.category.LAUNCHER" />
+            </intent-filter>
+        </activity>
+    </application>
+
+</manifest>

app/src/main/java/com/mahiapps/fmath/Activities/ArithmeticActivity.java

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+package com.mahiapps.fmath.Activities;
+
+import androidx.appcompat.app.AppCompatActivity;
+
+import android.os.Bundle;
+import android.widget.GridView;
+
+import com.mahiapps.fmath.Adapters.CourseGVAdapter;
+import com.mahiapps.fmath.Model.CourseModel;
+import com.mahiapps.fmath.R;
+
+import java.util.ArrayList;
+
+public class ArithmeticActivity extends AppCompatActivity {
+
+    GridView coursesGV;
+
+    @Override
+    protected void onCreate(Bundle savedInstanceState) {
+        super.onCreate(savedInstanceState);
+        setContentView(R.layout.activity_arithmetic);
+
+        coursesGV = findViewById(R.id.idGVcourses);
+        ArrayList<CourseModel> courseModelArrayList = new ArrayList<CourseModel>();
+
+        courseModelArrayList.add(new CourseModel("ADDITION", R.drawable.add));
+        courseModelArrayList.add(new CourseModel("SUBTRACTION", R.drawable.minus));
+        courseModelArrayList.add(new CourseModel("MULTIPLICATION", R.drawable.multiplication));
+//        courseModelArrayList.add(new CourseModel("DIVISION", R.drawable.divide));
+
+        CourseGVAdapter adapter = new CourseGVAdapter(this, courseModelArrayList);
+        coursesGV.setAdapter(adapter);
+    }
+}

app/src/main/java/com/mahiapps/fmath/Activities/MainActivity.java

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+package com.mahiapps.fmath.Activities;
+
+import static com.mahiapps.fmath.R.color.green;
+import static com.mahiapps.fmath.R.color.orange;
+
+import androidx.appcompat.app.AppCompatActivity;
+
+import android.content.Intent;
+import android.content.SharedPreferences;
+import android.os.Bundle;
+
+import android.os.Bundle;
+import android.preference.PreferenceManager;
+import android.view.View;
+import android.widget.GridView;
+import android.widget.TextView;
+
+import androidx.appcompat.app.AppCompatActivity;
+import androidx.cardview.widget.CardView;
+
+import com.mahiapps.fmath.Adapters.CourseGVAdapter;
+import com.mahiapps.fmath.Model.CourseModel;
+import com.mahiapps.fmath.R;
+
+import java.util.ArrayList;
+
+public class MainActivity extends AppCompatActivity {
+
+    private CardView tableCardView, arithmeticCardView;
+    private TextView score;
+
+    private int right = 0, wrong = 0;
+
+    @Override
+    protected void onCreate(Bundle savedInstanceState) {
+        super.onCreate(savedInstanceState);
+        setContentView(R.layout.activity_main);
+
+        score = findViewById(R.id.score);
+        tableCardView = findViewById(R.id.tableCardView);
+        arithmeticCardView = findViewById(R.id.arithmeticCardView);
+
+        tableCardView.setOnClickListener(v -> {
+            Intent intent = new Intent(getApplicationContext(), TableActivity.class).setFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
+            startActivity(intent);
+        });
+
+        arithmeticCardView.setOnClickListener(v -> {
+            Intent intent = new Intent(getApplicationContext(), ArithmeticActivity.class).setFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
+            startActivity(intent);
+        });
+    }
+
+    private void placeScoreValue() {
+        SharedPreferences preferences = PreferenceManager.getDefaultSharedPreferences(this);
+
+            right = preferences.getInt("RIGHT", 0);
+            wrong = preferences.getInt("WRONG", 0);
+            int total = right - wrong;
+            score.setText(String.valueOf(total));
+            if(total > 0){
+                score.setTextColor(getResources().getColor(green));
+            } else{
+                score.setTextColor(getResources().getColor(orange));
+            }
+    }
+
+    @Override
+    protected void onStart() {
+        super.onStart();
+        SharedPreferences preferences = PreferenceManager.getDefaultSharedPreferences(this);
+        if(preferences.contains("RIGHT") && preferences.contains("WRONG")){
+            placeScoreValue();
+        } else{
+            SharedPreferences.Editor editor = preferences.edit();
+            editor.putInt("RIGHT", 0);
+            editor.putInt("WRONG", 0);
+            editor.apply();
+            score.setText("0");
+        }
+    }
+}