TASKS.md

First task:

1. Add button named "witaj" and TextView.

2. Using methods findViewById() and anonymous class OnClickListener create functionality providing changing text in TextView on "witaj".

Second task:

1. Create new activity

2. Add button "nowa aktywność".

3. Using a presentation slide, add button functionality that opens a new activity.

4. In the new activity, add a button that allows you to go back to the first activity.

Third task:

1. Create a new button that will cause any message to be logged in LogCat.

2. Use Log.d() to pass a tag that will help you find the sent message.