- 1. Make an app that displays the text "Hello World" on screen.
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2. Add a button to the same view that shows "Hello World" - when you press the button, it should show an alert that says "Hello Back!"
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3. Then change the app so it shows a textfield, and a button
- a. Enter text into the textfield, and then press the button
- b. It shows an alert with the text in the textfield