Flutter FutureBuilder Widget

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The FutureBuilder is a Widget that builds itself from the latest snapshot of interaction of a certain Future. If we create the future at the same time that we build the Future Builder, then the FutureBuilder's parent will be rebuilt everytime, the async task will eventually be restarted. It's a great what to wait for value before removing the Circular Procgress Indicator and show a different widget after. You can also handle errors coming from the Future if needed.

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OVERVIEW
0:00 FutureBuilder
0:10 Future String
0:20 Handle errors
0:30 Future Builder Widget
0:40 If connection waiting
0:50 If Error
1:00 Return Waiting/Error
1:10 Snapshot Date
1:20 Elevated Button
1:30 Throw Error
1:40 Flutter Courses
1:50 Flutter of the day

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For future watchers be wary of a big mistake made in this video. With FutureBuilders you do not want to create a Future wthin the FutureBuilder. In this example it is `getData()`. You want to pass an **instance** of a Future.

You can really see the issue when they call setState. Granted they get their refresh functionality, but it causes technical debt because it can lead to bad user experience. Imagine calling setState for something completely different, and now the user has to wait for the Future again. You have to write some work around, when the actual issue is that every time the build function is called the Future is recreated and therefore you have to wait again.

Otherwise great video, but just be wary of that gotcha - Future watchers

pcelis