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Kotlin Programming: The Big Nerd Ranch Guide, First Edition
book

Kotlin Programming: The Big Nerd Ranch Guide, First Edition

by Josh Skeen, David Greenhalgh
July 2018
Intermediate to advanced content levelIntermediate to advanced
400 pages
12h 14m
English
Big Nerd Ranch Guides
Content preview from Kotlin Programming: The Big Nerd Ranch Guide, First Edition

Wiring Up Views

To display the character data in the UI, you will first retrieve each view element that will display text using a function available on NewCharacterActivity (via inheritance) called findViewById. findViewById accepts a view element id (the android:ids defined in the XML) and returns the view element if a match is found.

In NewCharacterActivity.kt, update onCreate to look up each view element that will display data by its id and assign it to a local variable:

Listing 21.2  Looking up view elements (NewCharacterActivity.kt)

class NewCharacterActivity : AppCompatActivity() {
    override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)
        setContentView(R.layout.activity_new_character)
        val ...
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Publisher Resources

ISBN: 9780135165188