appsetup documentation

docs/documentation/android/appSetup.md

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+# Setting up a android app
+
+## How to make your project from a empty project
+
+### Layout
+You first need to make the layout of the app. This can be done in the res folder where you can make a android recource file. When you open that file you can drag and drop elements in the layout. 
+
+### Code
+Then need to make the main class. The class will probably look like this.
+
+```java
+package com.fitbot.fitbot;
+
+import android.os.Bundle;
+import androidx.appcompat.app.AppCompatActivity;
+
+public class MainActivity extends AppCompatActivity {
+    @Override
+    protected void onCreate(Bundle savedInstanceState) {
+        super.onCreate(savedInstanceState);
+        // set activity_main to your respective layout file
+        setContentView(R.layout.activity_main);
+    }
+}
+```
+
+### Manifest
+For the app to be able to build you need to add the activity to the manifest file. You can do this by adding this to the manifest file.
+
+```xml
+        <activity android:name=".MainActivity"
+            android:exported="true">
+            <intent-filter>
+                <action android:name="android.intent.action.MAIN"/>
+                <category android:name="android.intent.category.LAUNCHER"/>
+            </intent-filter>
+        </activity>
+```
+The class name that is ran first is defined in the first line of the class.