Learn Spring for Android Application Development

The RxBinding library

The RxBinding library provides a reactive application programming interface. Let's imagine that we want to observe an input of EditText and display this text in TextView.

The RxBinding library provides extension functions for user interface components, such as textChanges:

fun TextView.textChanges(): InitialValueObservable<CharSequence> {    return TextViewTextChangesObservable(this)}

We can implement our example by using the textChanges function, as follows:

class RxActivity : AppCompatActivity() {    private val editText by lazy(LazyThreadSafetyMode.NONE) {        findViewById<EditText>(R.id.editText)    }    private val textView by lazy(LazyThreadSafetyMode.NONE) {        findViewById<TextView>(R.id.textView)    }    override fun onCreate(savedInstanceState ...