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The user interface (UI) of an app is what you see on the screen: text, images, buttons, and many other types of elements.
SIMPLE ANDROID APP FOR FENCE HOW TO
In this codelab, you will learn how that message gets there, how to change its text to be more of a birthday greeting, and how to add and format additional messages. When you created this Happy Birthday app with the Empty Activity template, Android Studio set up resources for a basic Android application, including a "Hello World!" message in the middle of the screen. The app should look like the screenshot below. Important: If you're not familiar with creating a new project in Android Studio, see Create and run your first Android app for details.
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How to run an app in the emulator or on your Android device.How to create a new app in Android Studio.You will be able to position the text on the screen by understanding more about User Interface (UI) components in Android. In this codelab, you will build a simple Android app that displays text.