In message , Arlen_Holder
writes

after large snip of useful info

Clearly Android Studio doesn't like when you move things around in Windows
with respect to this "stale signature" (whatever that is). In fact, Android
Studio won't even run the "hello world" (app01) on my phone anymore!

That's how much Android Studio hates that I moved things around in Windows!
I'm sure the solution will be "do this and don't do that", but I'm not
going to bother right now as I'll learn about 'stale signatures' when I
need to figure out what a "signature" is.

Anyway, I'm going to skip that last Butterfield video, which I listened to
in its entirety, where it creates a list based on Oracle SQL database
files.

If I need to, I'll go back to that fourth tutorial, but for now I'll stop
at the penultimate tutorial and move on to writing code that creates an
alarm clock of some sort.

I'm working on that now, but since I'm going off road, I may not be able to
help you if you attack that last Bill Butterfield tutorial.

But if you have questions about the penultimate tutorial, let me know.

Thanks, Arlen. I'll look at your other posting again when I hit problems
on Butterfield 3!

I discovered early on that a simple rename of something I thought was
innocuous caused great problems, and that rewriting elements from
scratch again was the only way to move on quickly.

I know I had problems with the emulator at one stage, and that closing
it down completely (i.e. stopping it and then "powering it off") let it
restart in a clean condition on a rebuild of the app.

I am sure you will have tried closing the app on the real phone, then
removing it and doing a proper restart of the phone before re-trying the
latest build.

I'll watch with great interest how you get along with your timer alarm.
--
Bill

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