Proprietary Systems Mobile Development

Implement a Drawing App.

Requirements:

• User should be able to pick an image from photo library
• User should be able to draw with different colors on top of the image.
• User should be able to erase part of his drawings (but not the underling image).
• The resulting image should be saved into photo library.

Examples:

• https://edu.mmcs.sfedu.ru/mod/resource/view.php?id=23604
  
• https://edu.mmcs.sfedu.ru/mod/resource/view.php?id=23605