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In this module, we'll now build up on the practice app or on the shopping app we built in the last course

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module.

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So if you skipped the last course module which you can, make sure you still download the finished code

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from there and you manually go through that code to understand what we're doing there,

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also of course run the app on your emulators or real devices

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so that you again get a feeling for what's happening there and what we built there

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because in this module, we'll take this app and we'll now work on the user input part.

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That means, we'll work on the part where users can add products and where they need to enter their own

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data because whilst fetching data with the text input component is relatively straightforward, as you

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will learn in this module,

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there is a bit more to it when it comes to validating that input, configuring the text inputs correctly

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and using that user input

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and these are all the things we'll have a detailed look at in this module.