I\'m trying to add ZXing to my project (add a button which calls the scanner upon press). I found this: http://groups.google.com/group/android-developers/browse_thread/threa
First, ZXing will not be able to automatically prompt the user to download from the Market on an emulator, because there is no Market on the emulator. You would need to manually install the Barcode Scanner APK on the emulator.
Second, since the emulator does not emulate a camera, Barcode Scanner probably will not do you much good. Most likely you are going to need to test this out on a device.