android - eclipse - google app engine application

Summary of project: I need an Android/Webb application including 6-8 different user interface screens (design is ready) to input data into Google spreadsheet or Google database (via spreadsheet or other, similar forms, values 1-100). This app should be compatible to my Google spreadsheet or database and could be deployed as standalone Google spreadsheet/database app, mobile platform (Android) and website (Google sites). This application should also be able to present series of data inputs as a chart (Google chart api) I believe that most suitable technology for this development is Google plugin for Eclipse (GPE) which support Google Data plug-in supporting the Google Data APIs (for ex spreadsheets) that is server side of application running Google Apps Engine and client side deployed on Android and traditional browser, IE, Firefox, Chrom, etc This project should be Java/Java script based I would like to use slider bar to input data into table. However there is an ready function in Android tools - SeekBar, [login to view URL] just put it in into the application Another good intro exactly into technology needed for this project is here: [login to view URL] Detailed presentation of all technology needed available on request Welcome with your bid Greetings Ruslan