added example with nested viewmodels

app/src/main/java/ds/bindingtools/demo/MainActivity.kt

@@ -30,11 +30,16 @@ class MainActivity : AppCompatActivity() {
         fillPrefs()
 
         navigateButton.setOnClickListener { navigateNext() }
+
         bindButton.setOnClickListener {
             viewModel.onBindClick()
             extraViewModel.message = "toast!"
         }
 
+        nestedButton.setOnClickListener {
+            viewModel.assignNested()
+        }
+
     }
 
     override fun onResume() {
@@ -49,8 +54,12 @@ class MainActivity : AppCompatActivity() {
     }
 
     private fun bindViews() = withBindable(viewModel) {
-        bind(this::text, helloLabel::setText, helloLabel::getText)
+        bind(::text, helloLabel::setText, helloLabel::getText)
         bind(::buttonText, { it: String -> navigateButton.text = it }, { navigateButton.text.toString() })
+
+        withBindable(nestedViewModel) {
+            bind(::secondaryText, { Toast.makeText(this@MainActivity, it, Toast.LENGTH_SHORT).show() })
+        }
     }
 
     private fun fillPrefs() {

app/src/main/java/ds/bindingtools/demo/MainViewModel.kt

@@ -9,15 +9,25 @@ object MainViewModel : Bindable {
     var text: String by binding()
     var buttonText: String by binding("...")
 
+    val nestedViewModel = NestedViewModel
+
     fun sayHello() {
         if (text.isEmpty())
             text = "Hello, World!"
     }
 
+    fun assignNested() {
+        nestedViewModel.secondaryText = "this is nested"
+    }
+
     fun onBindClick() {
         Handler().postDelayed({
             buttonText = "navigate"
         }, 2000)
     }
 
+}
+
+object NestedViewModel : Bindable {
+    var secondaryText: String by binding("")
 }

app/src/main/res/layout/activity_main.xml

@@ -27,4 +27,11 @@
         android:text="delayed binding"
         />
 
+    <Button
+        android:id="@+id/nestedButton"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:text="nested binding"
+        />
+
 </LinearLayout>

build.gradle

@@ -1,12 +1,11 @@
 buildscript {
-    ext.kotlin_version = '1.2.0-rc-39'
+    ext.kotlin_version = '1.2.10'
     repositories {
         google()
         jcenter()
-        maven { url 'https://dl.bintray.com/kotlin/kotlin-eap' }
     }
     dependencies {
-        classpath 'com.android.tools.build:gradle:3.0.0'
+        classpath 'com.android.tools.build:gradle:3.0.1'
         classpath "org.jetbrains.kotlin:kotlin-gradle-plugin:$kotlin_version"
         classpath 'com.github.dcendents:android-maven-gradle-plugin:2.0' // for jitpack
     }
@@ -16,7 +15,6 @@ allprojects {
     repositories {
         google()
         jcenter()
-        maven { url 'https://dl.bintray.com/kotlin/kotlin-eap' }
     }
 }
 

gradle/wrapper/gradle-wrapper.properties

@@ -3,4 +3,4 @@ distributionBase=GRADLE_USER_HOME
 distributionPath=wrapper/dists
 zipStoreBase=GRADLE_USER_HOME
 zipStorePath=wrapper/dists
-distributionUrl=https\://services.gradle.org/distributions/gradle-4.2.1-all.zip
+distributionUrl=https\://services.gradle.org/distributions/gradle-4.4-bin.zip

lib/build.gradle

@@ -11,8 +11,8 @@ android {
     defaultConfig {
         minSdkVersion 19
         targetSdkVersion 26
-        versionCode 1
-        versionName "1.0"
+        versionCode 15
+        versionName "0.15"
 
     }