ubuntudroid

<string name="some_string">Hello %1$s</string>

ubuntudroid

<TextView
    android:layout_width="match_parent"
    android:layout_height="wrap content"
    android:text="Hello, gradient!"
    app:background_gradient_colors="@{@intArray/some_colors}"/>

ubuntudroid

<?xml version="1.0" encoding="utf-8"?>
<resources>
    <integer-array name="some_colors">
        <item>@color/color0</item>
        <item>@color/color1</item>
        <item>@color/color2</item>
        <item>@color/color3</item>
        <item>@color/color4</item>
    </integer-array>
</resources>

ubuntudroid

object ViewBindingAdapters {

    @JvmStatic
    @BindingAdapter("background_gradient_colors")
    fun setBackgroundColors(view: View, colors: IntArray) {
        view.background = GradientDrawable(
                GradientDrawable.Orientation.LEFT_RIGHT,
                colors
        )
    }

ubuntudroid

def localPropertyApiToken = … // read api token from local.properties
def systemEnvApiToken = … // read api token from system environment variable
ext.api_token = localPropertyApiToken != null ? localPropertyApiToken : systemEnvApiToken

ubuntudroid

Properties properties = new Properties()
def propertiesFile = project.rootProject.file('local.properties')
if (propertiesFile.exists()) {
 properties.load(propertiesFile.newDataInputStream())
}
ext.apiToken = properties.getProperty('api.token')

ubuntudroid

ext.apiToken = System.getenv('API_TOKEN') // replace the ext. prefix with def if you don’t want to provide the API token to the default properties which you can then access from all your build scripts

ubuntudroid

api.token=123456789abcdef

ubuntudroid

class SidebarPresenter(val userInfoRepository: UserInfoRepository) {

  fun init() {
    ...
    userInfoRepository
      .getNameStateObservable()
      .mergeWith(
        Observable.from(arrayOf("Arthur Dent", "Genghis Temüjin Khan", "Know-Nothing Bozo the Non-Wonder Dog", ""))
          .zipWith(
            Observable.interval(5, TimeUnit.SECONDS), 

ubuntudroid

class SidebarPresenter(val userInfoRepository: UserInfoRepository) {

  fun init() {
    ...
    userInfoRepository
      .getNameStateObservable()
      .observeOn(AndroidSchedulers.mainThread())
      .subscribe { userName -> userNameTextView.setText(userName) }
    ...
  }