Introduction to Canvas

Introduction to Canvas

1. 1. Android: Canvas The Basics<br />CodeAndroid.org<br />
2. 2. Why Canvas?<br />For Multimedia Applications<br /><ul><li>Games, full visual applications
3. 3. Control over the Visual Effects
4. 4. Allows animation to be done freely
5. 5. Unique Response according to author’s design</li></li></ul><li>No longer Needed<br />
6. 6. Fundamentals<br />
7. 7. Drawing an image(basic)<br />Specify the coordinate and paint<br />Coordinate X and Y and paint<br />Paint functions<br />Color<br />Alpha(transparent)<br />http://developer.android.com/reference/android/graphics/Paint.html<br />Canvas itself<br />Color(background)<br />
8. 8. Drawing shape and text<br />
9. 9. Adding Bitmap<br />
10. 10. Text Size and alpha<br />
11. 11. Response <br />onKeyDown(int, KeyEvent)<br />onKeyUp(int, KeyEvent)<br />onTrackballEvent(int, KeyEvent)<br />onTouchEvent(int, KeyEvent)<br />
12. 12. Question and Sharing<br />
13. 13. Thank you <br />