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You're reading from  Android Studio 4.1 Development Essentials – Java Edition

Product typeBook
Published inMay 2021
PublisherPackt
ISBN-139781801815161
Edition1st Edition
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Author (1)
Neil Smyth
Neil Smyth
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Neil Smyth

Neil Smyth has over 25 years of experience in the IT industry, including roles in software development and enterprise-level UNIX and Linux system administration. In addition to a bachelor’s degree in information technology, he also holds A+, Security+, Network+, Project+, and Microsoft Certified Professional certifications and is a CIW Database Design Specialist. Neil is the co-founder and CEO of Payload Media, Inc. (a technical content publishing company), and the author of the Essentials range of programming and system administration books.
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33.7 Accessing the ViewModel Data

When the button is clicked, the onClick() method needs to read the current value from the EditText view, confirm that the field is not empty and then call the setAmount() method of the ViewModel instance. The method will then need to call the ViewModel’s getResult() method and display the converted value on the TextView widget.

Since LiveData is not yet being used in the project, it will also be necessary to get the latest result value from the ViewModel each time the Fragment is created.

Remaining in the MainFragment.java file, implement these requirements as follows in the onActivityCreated() method:

@Override

public void onActivityCreated(@Nullable Bundle savedInstanceState) {

    super.onActivityCreated(savedInstanceState);

    mViewModel = new ViewModelProvider(this).get(MainViewModel.class);

 

 

    dollarText = getView().findViewById(R.id...

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Android Studio 4.1 Development Essentials – Java Edition
Published in: May 2021Publisher: PacktISBN-13: 9781801815161

Author (1)

author image
Neil Smyth

Neil Smyth has over 25 years of experience in the IT industry, including roles in software development and enterprise-level UNIX and Linux system administration. In addition to a bachelor’s degree in information technology, he also holds A+, Security+, Network+, Project+, and Microsoft Certified Professional certifications and is a CIW Database Design Specialist. Neil is the co-founder and CEO of Payload Media, Inc. (a technical content publishing company), and the author of the Essentials range of programming and system administration books.
Read more about Neil Smyth