Android App Demo - My Grand -

Introduction 

•Learn how to allocate 2D graphic on the screen

•Learn how to integrate activities with Key stroke

•Learn how to integrate audio files to application

•Class name: MyGrand  inherits Activity

è Access to key pad, audio methods (utilities)

•Class name: KeyView inherits View

è allows access to all 2D methods

User Interface 

Key Definitions and 2D Interface

• MyGround-Activity OnKeyDown() method  is the handler
• When a Key pad (A-H) is pressed, it shades the location of the key in 2D.
• Piano Keys     Middle C-High C are mapped to: C,D,E,F,G,A,B,H

Audio Interface 

MyGround-Activity OnKeyDown() method  is the handler

When a Key pad (A-H) is pressed, it makes the sound of selection.

Successfully tested with the following format

•MP3

•MP4

•WAV (Windows XP)

Does not compatible with

•WMA(Windows7)

Need Recoding Software

•Sound Recorder (Windows accessories)

Future Enhancement Ideas

•Play list

Browse files on the handset

Upload the file on App

Register in play list and play

•Key extension

Support 67 keys

•Display music notes