I am developing an Android application and it is not finished. I would like to test it on multiple devices, locations with various users that are not near me. How can I achieve this? Is there an APK I can send them? Is there a way that is as simple as plugging my phone in and then running the application from Eclipse? Or would I have to make an installer of some sort (I don't know)?
Obviously you can plug your phone(s) into the machine you are developing on and run it from eclipse. This will allow you to test and debug on the devices you have access to.
You can also export an apk from eclipse (see the android pages for instructions). You could put this up on a file sharing site and make it available to your friends. They could then install it, as long as they have authorised "unsigned" apks to be installed in their phone settings.