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In the last course module, we had a thorough, a very thorough look at all the important basics of Flutter
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and Dart.
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Now when you're building Flutter applications, things will occasionally go wrong.
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You'll have errors and in addition thus far, we only tested our app on an Android emulator
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but in reality, you of course want to test your application also on iOS simulators and on real devices.
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Therefore in this module, we'll have a look at how you can run your app on different platforms,
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so on Android and iOS and on real devices and how you can test your app there. We'll also have a look
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at error messages because things will occasionally go wrong,
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you will have some errors in your code and reading and understanding error messages and fixing errors
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is a crucial part of development,
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so we'll have a look at that.
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And then there sometimes also are errors without error messages, because they might be logical errors
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in your code which are hard to spot
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and fix. For this, we'll have a look at the Visual Studio Code debugger which you can use and how to
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use it to walk through your code in detail and have a look into your code whilst it is running, to really
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understand where a problem might be stemming from.
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Now that all helps us with fixing issues in our code but sometimes, the UI doesn't look the way it should
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look or we're not sure whether we're updating some part of the UI unnecessarily and for that, you will
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learn how to use the Dart DevTools and the Flutter inspector, which are tools that allow you to visually
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debug your app, so understand the user interface and why it looks the way it does look and also get a
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brief insight into how to debug or measure performance and get a feeling for that.
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This is it for this module,
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let's dive right in.
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