mylhassane / canvasdrawview

Custom views | Touch events | Click | Long Press | Gestures | Canvas | MVP architecture | SOLID Principles

Android Project to Create 'Custom Canvas Draw View' and create shapes on canvas

Features Implemented:

1. Create a Custom View canvas.
2. Create Shapes like Circle, Triangle And Rectangle
3. Display buttons on screen, to add these shapes at random positions in screen.
4. Taping on a button will transform that shape to another shape.
5. User is able to UNDO action (creation and deletion) both
6. Long Press on a shape, will delete that shape
7. Deletion can be undone
8. Stats screen shows count of all shapes
9. Delete button to delete shapes of specific row in Canvas.

About UI I have tried to create minimal UI, focussing more on code functionality , simplicity and architecture.

About Data Structures Used 'LinkedList' of Shape objects to suit the required functionalities and minimize time and space complexity.

Article Publication

A detailed article explaining canvas creation and custom drawing for this repo is here

Screenshots

Built With

• Android Studio - The Official IDE for Android
• [Java] (https://www.oracle.com/technetwork/java/javase/overview/java8-2100321.html)
• Kotlin - The Official Language for Android
• Gradle - Build tool for Android Studio