Your Second Flutter App

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Now comes the part where we add the ability to filter courses. After all, a user will want to see only the courses they are interested in. We've already added a button. We'll begin by creating a filter widget that will hold each filter value for the filter page. Then we'll build out the filter page itself. Next, we'll see how to persist the filter choice to your app storage using a library called SharedPreferences. Finally, we'll use the filter choice that the user has made to filter the list of courses shown on the courses page. In the process of this, you'll understand how we can persist state between widgets. Let's get started.