Pro XP Calculator For Clash Royale ( Android Studio – GDPR – Admob )

Introduction

Welcome to the tutorial on how to use the Pro XP Calculator For Clash Royale, a powerful tool for Android developers to create a calculator app that helps players of the popular mobile game Clash Royale to track their progress and optimize their gameplay. In this tutorial, we will guide you through the process of creating a calculator app using Android Studio, incorporating GDPR compliance, and integrating AdMob for monetization.

Prerequisites

Before starting this tutorial, you should have:

1. Android Studio installed on your computer
2. Basic knowledge of Java programming language
3. Familiarity with Android development
4. A Google Play Developer account (for publishing the app)

Step 1: Creating a New Project in Android Studio

1. Open Android Studio and click on "Start a new Android Studio project"
2. Choose "Empty Activity" as the project template
3. Name your project "Pro XP Calculator For Clash Royale"
4. Set the package name to "com.example.proxpclashroyale"
5. Choose the minimum SDK version as 21 (Android 5.0)
6. Click "Finish" to create the project

Step 2: Designing the User Interface

1. Open the "activity_main.xml" file and replace the existing code with the following:

   
   <?xml version="1.0" encoding="utf-8"?>
   <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
   xmlns:app="http://schemas.android.com/apk/res-auto"
   android:layout_width="match_parent"
   android:layout_height="match_parent"
   android:orientation="vertical">
   
   <EditText
       android:id="@+id/et_xp"
       android:layout_width="match_parent"
       android:layout_height="wrap_content"
       android:hint="Enter your current XP"
       android:inputType="number" />
   
   <EditText
       android:id="@+id/et_level"
       android:layout_width="match_parent"
       android:layout_height="wrap_content"
       android:hint="Enter your current level"
       android:inputType="number" />
   
   <Button
       android:id="@+id/btn_calculate"
       android:layout_width="match_parent"
       android:layout_height="wrap_content"
       android:text="Calculate XP" />
   
   <TextView
       android:id="@+id/tv_result"
       android:layout_width="match_parent"
       android:layout_height="wrap_content"
       android:textSize="24sp" />

This code creates a simple layout with two EditText fields for inputting the current XP and level, a Button for calculating the XP, and a TextView for displaying the result.

**Step 3: Writing the Java Code**

1. Open the "MainActivity.java" file and replace the existing code with the following:
```java
package com.example.proxpclashroyale;

import androidx.appcompat.app.AppCompatActivity;

import android.os.Bundle;
import android.view.View;
import android.widget.Button;
import android.widget.EditText;
import android.widget.TextView;

public class MainActivity extends AppCompatActivity {

    private EditText etXp;
    private EditText etLevel;
    private Button btnCalculate;
    private TextView tvResult;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        etXp = findViewById(R.id.et_xp);
        etLevel = findViewById(R.id.et_level);
        btnCalculate = findViewById(R.id.btn_calculate);
        tvResult = findViewById(R.id.tv_result);

        btnCalculate.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                calculateXp();
            }
        });
    }

    private void calculateXp() {
        int currentXp = Integer.parseInt(etXp.getText().toString());
        int currentLevel = Integer.parseInt(etLevel.getText().toString());
        int requiredXp = 0;

        // Calculate the required XP for the next level
        if (currentLevel < 10) {
            requiredXp = 1000;
        } else if (currentLevel < 20) {
            requiredXp = 2000;
        } else if (currentLevel < 30) {
            requiredXp = 3000;
        } else {
            requiredXp = 4000;
        }

        // Calculate the XP remaining to reach the next level
        int remainingXp = requiredXp - currentXp;

        tvResult.setText("You need " + remainingXp + " XP to reach the next level");
    }
}

This code creates a simple calculator that takes the current XP and level as input, calculates the required XP for the next level, and displays the result in the TextView.

Step 4: Adding GDPR Compliance

1. Open the "AndroidManifest.xml" file and add the following code:

   
   <uses-permission android:name="android.permission.INTERNET" />
   <uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />

<application ... android:usesCleartextTraffic="true" android:networkSecurityConfig="@xml/network_security_config">

<activity
   ...
    android:exported="true">

    <intent-filter>
        <action android:name="android.intent.action.MAIN" />
        <category android:name="android.intent.category.LAUNCHER" />
    </intent-filter>
</activity>

This code adds the necessary permissions for internet access and network state, and sets the `usesCleartextTraffic` attribute to `true` to allow cleartext traffic.

**Step 5: Integrating AdMob**

1. Open the "build.gradle" file and add the following code:
```groovy
dependencies {
    implementation 'com.google.android.gms:play-services-ads:20.4.0'
}

This code adds the AdMob library to the project.

1. Open the "MainActivity.java" file and add the following code:

   
   import com.google.android.gms.ads.AdRequest;
   import com.google.android.gms.ads.AdView;
   import com.google.android.gms.ads.MobileAds;

public class MainActivity extends AppCompatActivity {

private AdView adView;

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);

    // Initialize AdMob
    MobileAds.initialize(this, new OnInitializationCompleteListener() {
        @Override
        public void onInitializationComplete() {
            // AdMob initialization complete
        }
    });

    // Create an AdView
    adView = new AdView(this);
    adView.setAdSize(AdSize.BANNER);
    adView.setAdUnitId("YOUR_AD_UNIT_ID");

    // Add the AdView to the layout
    LinearLayout layout = findViewById(R.id.layout);
    layout.addView(adView);

    // Load an ad
    AdRequest adRequest = new AdRequest.Builder().build();
    adView.loadAd(adRequest);
}

}

This code initializes AdMob, creates an AdView, and loads an ad.

**Step 6: Publishing the App**

1. Create a new release build of the app by going to "Build" > "Generate Signed Bundle/APK"
2. Upload the APK file to the Google Play Store
3. Fill out the app's metadata, such as title, description, and screenshots
4. Set the app's pricing and distribution model
5. Publish the app

That's it! You have now created a calculator app for Clash Royale that incorporates GDPR compliance and AdMob for monetization.