Changes

# [https://www.answertopia.com/android-studio/an-android-studio-java-custom-gesture-recognition-tutorial/ Detecting Common Gestures using the Android Gesture Detector Class]<br><br>

# [https://www.answertopia.com/android-studio/a-java-android-studio-gesture-detection-tutorial/ Implementing Custom Gesture and Pinch Recognition on Android]<br><br>

# [[Using Fragments in Android Studio - An Example]]<br><br>

# [[Modern Android App Architecture with Jetpack]]<br><br>