Drawing Canvas App is a powerful and intuitive Android drawing application built using Kotlin and Jetpack Compose.
It offers a full-featured digital sketchpad with customizable tools, background selection, undo functionality, and the ability to save and share artwork — all within a smooth, modern UI.

The app is designed for creativity on the go, supporting artists, students, and casual doodlers with rich interaction and instant feedback.

Features

• 9 Vibrant Colors — Choose from a curated palette of 9 colors for expressive drawing.

• 3 Brush Sizes — Small, medium, and large stroke widths for fine details or bold lines.

• Custom Background — Set a solid color or image as the canvas background before drawing.

• Undo Last Stroke — Instantly revert the latest drawing action with a single tap.

• Save to Gallery — Export your artwork as a high-quality PNG image to the device.

• Share Artwork — Share your creation via WhatsApp, Instagram, email, or any app.

• Smooth Touch Drawing — Real-time rendering using Canvas and Path for fluid strokes.

• Responsive Toolbar — Clean bottom toolbar with color picker, brush size, background, undo, save, and share.

App Flow

1. Main Canvas Screen

   • Opens to a blank (or selected background) canvas ready for drawing.
   • Bottom toolbar displays all controls in a compact, accessible layout.

2. Color Selection

   • Tap the color palette icon → 9 circular color swatches appear.
   • Selected color is highlighted with a white border.

3. Brush Size Picker

   • Tap the brush icon → 3 size indicators (small circle, medium circle, large circle).
   • Preview stroke thickness in real time.

4. Background Selector

   • Tap the background icon → Choose from:
     • Solid colors (6 options)
     • Device gallery image
     • Default white

5. Drawing Experience

   • Touch and drag to draw smooth, pressure-sensitive-like lines.
   • Strokes are rendered instantly with anti-aliased paths.

6. Undo Action

   • Tap the undo arrow → Last path is removed from the drawing history.

7. Save Drawing

   • Tap the save icon → Artwork is saved to Pictures/DrawingCanvas/ with timestamp.

8. Share Drawing

   • Tap the share icon → System share sheet opens with the current drawing as PNG.

Tech Stack

• Language: Kotlin
• UI Framework: Jetpack Compose
• Architecture: MVVM (ViewModel for state & drawing history)
• Canvas API: Canvas, Path, PointerInput for gesture detection
• Image Handling: Coil (optional) or Bitmap for save/share
• Permissions: READ_EXTERNAL_STORAGE, WRITE_EXTERNAL_STORAGE (or scoped storage)
• Design System: Material 3 (with custom themes and elevation)

How to Get the APK

You can download and install the latest version of the app from the GitHub Releases page:

Download the latest APK here!