Created a simple Animal Quiz app (hacktoberfest17#832)

* added a new text file

* added maths operations in java

* Delete readme_doc.txt

* made a new directory

* Delete math_operations.java

* A very basic Animal Quiz app

android_apps/AnimalQuiz/.gitignore

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+*.iml
+.gradle
+/local.properties
+/.idea/workspace.xml
+/.idea/libraries
+.DS_Store
+/build
+/captures
+.externalNativeBuild

android_apps/AnimalQuiz/app/.gitignore

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+/build

android_apps/AnimalQuiz/app/build.gradle

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+apply plugin: 'com.android.application'
+
+android {
+    compileSdkVersion 25
+    buildToolsVersion "25.0.0"
+    defaultConfig {
+        applicationId "com.example.anurag.animalquiz"
+        minSdkVersion 20
+        targetSdkVersion 25
+        versionCode 1
+        versionName "1.0"
+        testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner"
+    }
+    buildTypes {
+        release {
+            minifyEnabled false
+            proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
+        }
+    }
+}
+
+dependencies {
+    compile fileTree(dir: 'libs', include: ['*.jar'])
+    androidTestCompile('com.android.support.test.espresso:espresso-core:2.2.2', {
+        exclude group: 'com.android.support', module: 'support-annotations'
+    })
+    compile 'com.android.support:appcompat-v7:25.1.0'
+    compile 'com.android.support:design:25.1.0'
+    compile 'com.android.support:support-v4:25.1.0'
+    testCompile 'junit:junit:4.12'
+}

android_apps/AnimalQuiz/app/proguard-rules.pro

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+# Add project specific ProGuard rules here.
+# By default, the flags in this file are appended to flags specified
+# in C:\Users\Anurag\AppData\Local\Android\sdk/tools/proguard/proguard-android.txt
+# You can edit the include path and order by changing the proguardFiles
+# directive in build.gradle.
+#
+# For more details, see
+#   http://developer.android.com/guide/developing/tools/proguard.html
+
+# Add any project specific keep options here:
+
+# 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 *;
+#}

android_apps/AnimalQuiz/app/src/androidTest/java/com/example/anurag/animalquiz/ExampleInstrumentedTest.java

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+package com.example.anurag.animalquiz;
+
+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.*;
+
+/**
+ * Instrumentation 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() throws Exception {
+        // Context of the app under test.
+        Context appContext = InstrumentationRegistry.getTargetContext();
+
+        assertEquals("com.example.anurag.animalquiz", appContext.getPackageName());
+    }
+}

android_apps/AnimalQuiz/app/src/androidTest/java/com/example/knightcube/ExampleInstrumentedTest.java

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+package com.example.knightcube;
+
+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.*;
+
+/**
+ * Instrumentation 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() throws Exception {
+        // Context of the app under test.
+        Context appContext = InstrumentationRegistry.getTargetContext();
+
+        assertEquals("com.example.anurag.animalquiz", appContext.getPackageName());
+    }
+}

android_apps/AnimalQuiz/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.example.knightcube">
+
+    <application
+        android:allowBackup="true"
+        android:icon="@mipmap/ic_launcher"
+        android:label="@string/app_name"
+        android:supportsRtl="true"
+        android:theme="@style/AppTheme">
+        <activity
+            android:name="com.example.knightcube.MainActivity"
+            android:label="@string/app_name"
+            android:theme="@style/AppTheme.NoActionBar">
+            <intent-filter>
+                <action android:name="android.intent.action.MAIN" />
+
+                <category android:name="android.intent.category.LAUNCHER" />
+            </intent-filter>
+        </activity>
+    </application>
+
+</manifest>

android_apps/AnimalQuiz/app/src/main/java/com/example/anurag/animalquiz/MainActivity.java

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+package com.example.anurag.animalquiz;
+
+import android.content.Intent;
+import android.content.SharedPreferences;
+import android.os.Bundle;
+import android.os.Handler;
+import android.preference.PreferenceManager;
+import android.support.v7.app.AppCompatActivity;
+import android.support.v7.widget.Toolbar;
+import android.view.Menu;
+import android.view.MenuItem;
+import android.view.View;
+import android.widget.Button;
+import android.widget.ImageView;
+import android.widget.TextView;
+import android.widget.Toast;
+
+import java.util.ArrayList;
+import java.util.Collections;
+import java.util.Random;
+
+public class MainActivity extends AppCompatActivity {
+
+    Button option1, option2, option3, option4, reset;
+    TextView score;
+    ImageView animalImage;
+    private Handler handler;
+    int copy;
+    int points = 0;
+    int animalImages[] =
+            {
+                    R.drawable.tame_animals_bird,
+                    R.drawable.tame_animals_cat,
+                    R.drawable.tame_animals_dolphin,
+                    R.drawable.tame_animals_fish,
+                    R.drawable.tame_animals_flappy_bird,
+                    R.drawable.tame_animals_goat,
+                    R.drawable.tame_animals_horse,
+                    R.drawable.tame_animals_peacock,
+                    R.drawable.tame_animals_rabbit,
+                    R.drawable.tame_animals_penguin,
+                    R.drawable.tame_animals_sheep,
+                    R.drawable.wild_animals_bear,
+                    R.drawable.wild_animals_crocodile,
+                    R.drawable.wild_animals_dog,
+                    R.drawable.wild_animals_eagle,
+                    R.drawable.wild_animals_elephant,
+                    R.drawable.wild_animals_fox,
+                    R.drawable.wild_animals_leopard,
+                    R.drawable.wild_animals_lion,
+                    R.drawable.wild_animals_mouse,
+                    R.drawable.wild_animals_pink_panther,
+                    R.drawable.wild_animals_shark,
+                    R.drawable.wild_animals_snake,
+                    R.drawable.wild_animals_tiger
+
+
+            };
+
+    String animalNames[] = new String[]
+            {
+
+                    "Bird",
+                    "Cat",
+                    "Dolphin",
+                    "Fish",
+                    "Flappy_Bird",
+                    "Goat",
+                    "Horse",
+                    "Peacock",
+                    "Rabbit",
+                    "Penguin",
+                    "Sheep",
+                    "Bear",
+                    "Crocodile",
+                    "Dog",
+                    "Eagle",
+                    "Elephant",
+                    "Fox",
+                    "Leopard",
+                    "Lion",
+                    "Mouse",
+                    "Pink_Panther",
+                    "Shark",
+                    "Snake",
+                    "Tiger"
+
+            };
+
+    @Override
+    protected void onCreate(Bundle savedInstanceState) {
+        super.onCreate(savedInstanceState);
+        setContentView(R.layout.activity_main);
+        Toolbar toolbar = (Toolbar) findViewById(R.id.toolbar);
+        setSupportActionBar(toolbar);
+        handler = new Handler();
+        option1 = (Button) findViewById(R.id.option1);
+        option2 = (Button) findViewById(R.id.option2);
+        option3 = (Button) findViewById(R.id.option3);
+        option4 = (Button) findViewById(R.id.option4);
+        reset = (Button) findViewById(R.id.reset);
+        score = (TextView) findViewById(R.id.score);
+        animalImage = (ImageView) findViewById(R.id.imageView);
+        generateOptions();
+        reset.setOnClickListener(new View.OnClickListener() {
+            @Override
+            public void onClick(View view) {
+                int points = 0;
+                score.setText(Integer.toString(points));
+                generateOptions();
+            }
+        });
+
+    }
+
+    private void generateOptions() {
+
+        int numberOfAnimals = animalImages.length;
+        Random random = new Random();
+        int answer = random.nextInt(numberOfAnimals);
+        copy = answer;
+        animalImage.setImageResource(animalImages[answer]);
+        ArrayList<String> answers = new ArrayList<String>();
+        answers.add(animalNames[answer]);
+
+        int x = random.nextInt(numberOfAnimals);
+
+
+        while (answers.size() < 4) {
+
+            if (x != answer && !answers.contains(animalNames[x])) {
+                answers.add(animalNames[x]);
+
+            }
+
+            x = random.nextInt(numberOfAnimals);
+        }
+
+        //Shuffle the answers
+        Collections.shuffle(answers);
+        option1.setText(answers.get(0).toString());
+        option2.setText(answers.get(1).toString());
+        option3.setText(answers.get(2).toString());
+        option4.setText(answers.get(3).toString());
+
+        answers.clear();
+
+        option1.setOnClickListener(new View.OnClickListener() {
+            @Override
+            public void onClick(View view) {
+
+                verify(option1.getText().toString());
+
+            }
+        });
+
+        option2.setOnClickListener(new View.OnClickListener() {
+            @Override
+            public void onClick(View view) {
+
+                verify(option2.getText().toString());
+            }
+        });
+
+
+        option3.setOnClickListener(new View.OnClickListener() {
+            @Override
+            public void onClick(View view) {
+
+                verify(option3.getText().toString());
+
+            }
+        });
+
+
+        option4.setOnClickListener(new View.OnClickListener() {
+            @Override
+            public void onClick(View view) {
+
+                verify(option4.getText().toString());
+
+            }
+        });
+
+    }
+
+    private void verify(String s) {
+        if (s.compareTo(animalNames[copy].toString()) == 0) {
+            Toast.makeText(getApplicationContext(), "Correct!!", Toast.LENGTH_SHORT).show();
+            points += 10;
+            score.setText("Your Score: " + Integer.toString(points));
+            generateOptions();
+        } else {
+            Toast.makeText(getApplicationContext(), "Wrong!!Try Again", Toast.LENGTH_SHORT).show();
+        }
+    }
+
+}