The first screenshots straight from my Samsung Galaxy Y:
The app scrolls when I hide the keyboard.
It automatically opens the right keyboard for quickly entering numbers and the decimal point.
Finally, I can pass these coordinates to Google Navigation, which will probably be the only one that works for me. Tomorrow I will put it to the test properly in Poland.
Writing the whole app took me about 2.5 hours. I know, that is a heck of a lot for something so primitive, but I am an absolute beginner in Android development, slowed down in both work and thinking by the nature of Android development itself, and of course often by my habit of trying complicated things the simple way first, then gradually adding complexity until I finally end up where I should have gone right away.
The few lines of mine from the source code are here: 👻 The source code vanished into Google Docs limbo.