Delve into building Android apps using Kotlin. Gain hands-on experience with tools like Groovy and XML while creating a Travel Blog app for your portfolio.

This course is for anyone looking to build their own Android applications. Ever since Google announced that Kotlin is the language of choice for Android development, Kotlin has become increasingly popular.

In this course, you’ll take a hands-on, project-based approach to developing Android applications. You’ll work with the most common tools that Android developers use every day, including Kotlin, Groovy, and XML. As you learn, you’ll build a fully functional Travel Blog Application that will be a great addition to your portfolio.

By the end of this course, you’ll have tangible experience building an Android application and be ready to build even more complex projects.

John

Great practical approach to learn Android Development

Engineer

Modern Android App Development with Kotlin

# Flow overview

When the user clicks the login button, we will perform a data validation flow. If the data is valid, proceed to:

1. Hide the login button to prevent a user from clicking the button
2. Disable the username and password input fields to prevent a user from changing the text

# Layout update

To show the indeterminate loading indicator, we are going to use a `ProgressBar` view. Let’s make this view appear instead of the *login* button. To do so, we need to add constraints relative to the *login* button:

- `app:layout_constraintBottom_toBottomOf="@+id/loginButton"`
- `app:layout_constraintEnd_toEndOf="@+id/loginButton"`
- `app:layout_constraintStart_toStartOf="@+id/loginButton"`
- `app:layout_constraintTop_toTopOf="@+id/loginButton"`

The `ProgressBar` must be invisible by default, which can be done via the `visibility` attribute with the `invisible` parameter value.

Learn how to display a loading indicator and prevent user interaction with the views.


Android Ecosystem

Hello World

Travel Blog - Login Screen

Travel Blog - Details Screen

Travel Blog - List Screen

Travel Blog - Search & Sort

Travel Blog - Offline

Conclusion

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