By M. Murphy

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13 A Simple Form Step #3: Support All Screen Sizes You may want to test this application on an emulator. You may want to test it on a phone. You may want to test it on a tablet. The layouts we use in these tutorials will work on a variety of screen sizes, but they will work better if we tell Android that we do indeed those screen sizes. To that end, we need to modify the manifest for our project, to add a element, declaring what sizes we support and do not. xml file in the root of your project tree, and add in a element.

Besides, perhaps you may even find the application to be useful someday. Step-By-Step Instructions Here is how you can create this application: Step #1: Generate the Application Skeleton First, we need to create a new project. Eclipse Use the new-project wizard to create an empty Android project named LunchList, as described in the Android developer documentation. This will create an application skeleton for you, complete with everything you need to build your first Android application: Java source code, build instructions, etc.

In Eclipse, this would involve doing Project > Force Clean. At the command line, use ant clean or delete the contents of your bin/ and gen/ directories, then ant install. If the problem persists after this, then there is a bug in your code somewhere. You can use adb logcat, DDMS, or the DDMS perspective in Eclipse to see the Java stack trace associated with this crash, to help you perhaps diagnose what is going on. Step #2: Add a RadioGroup Next, we should add some RadioButton widgets to indicate the type of restaurant this is: one that offers take-out, one where we can sit down, or one that is only a delivery service.

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