Android Application Screen Support for Phones and Tablets

I am quite new to Android Development. I am developing an application that should run on Android-based phones as well as on Android-based 开发者_C百科Tablets. My Question is that how to support multiple screens. I have developed a simple list-view application that I am testing on my Galaxy Tab but it is appearing quite smaller on the screen and not coming as a full-screen. I have tried making changes in the manifest file and declared minSdkVersion as 7.. Any advices or examples would be appreciated????

The Supporting Multiple Screens section of the SDK docs should help you out. Have you looked at it? Pay special attention to the Best Practices section and remember to use wrap_content, fill_parent, or the dp unit for layout dimensions in your views.