View Binding not work with "Include": incompatible types: ProgressBarLayoutBinding cannot be converted to ViewDataBinding

Question

Android Studio 3.6. Canary 12

build.gradle:

buildscript {     ext.kotlin_version = '1.3.50'     ext.RETROFIT_VERSION = '2.6.0'     repositories {         google()         jcenter()      }     dependencies {         classpath 'com.android.tools.build:gradle:3.6.0-alpha12'         classpath "org.jetbrains.kotlin:kotlin-gradle-plugin:$kotlin_version"         // NOTE: Do not place your application dependencies here; they belong         // in the individual module build.gradle files     } } 

in app/build.gradle:

apply plugin: 'com.android.application' apply plugin: 'kotlin-android' apply plugin: 'kotlin-android-extensions' apply plugin: "kotlin-kapt"  android {     viewBinding {         enabled = true     }     dataBinding {         enabled = true     }     compileOptions {         sourceCompatibility JavaVersion.VERSION_1_8         targetCompatibility JavaVersion.VERSION_1_8     }     compileSdkVersion 29     defaultConfig {         vectorDrawables.useSupportLibrary = true         applicationId "com.android.testproject.android.kotlin"         minSdkVersion 23         targetSdkVersion 29         versionCode 1         versionName "1.0"         testInstrumentationRunner "androidx.test.runner.AndroidJUnitRunner"     } 

in layout xml:

<?xml version="1.0" encoding="utf-8"?> <layout xmlns:android="http://schemas.android.com/apk/res/android"     xmlns:app="http://schemas.android.com/apk/res-auto"     xmlns:tools="http://schemas.android.com/tools">      <data>         <import type="android.view.View" />          <variable             name="handler"             type="com.android.testproject.android.kotlin.coroutine_retrofit.ui.activity.CoroutinesRetrofitActivity" />      </data>       <androidx.constraintlayout.widget.ConstraintLayout         android:layout_width="match_parent"         android:layout_height="match_parent">          <include             android:id="@+id/toolBarContainer"             layout="@layout/tool_bar"             android:title='@{@string/coroutine_retrofit}'             app:layout_constraintEnd_toEndOf="parent"             app:layout_constraintStart_toStartOf="parent"             app:layout_constraintTop_toTopOf="parent" />          <com.google.android.material.button.MaterialButton             android:id="@+id/buttonRetry"             android:layout_width="wrap_content"             android:layout_height="@dimen/min_height"             android:visibility="gone"             android:text="@string/retry"             app:layout_constraintBottom_toBottomOf="parent"             app:layout_constraintEnd_toEndOf="parent"             app:layout_constraintStart_toStartOf="parent"             app:layout_constraintTop_toBottomOf="@+id/toolBarContainer" />           <androidx.recyclerview.widget.RecyclerView             android:id="@+id/agentsRecyclerView"             android:layout_width="0dp"             android:layout_height="0dp"             android:visibility="@{handler.agentList.size > 0 ? View.VISIBLE : View.GONE}"             app:layout_constraintBottom_toBottomOf="parent"             app:layout_constraintEnd_toEndOf="parent"             app:layout_constraintStart_toStartOf="parent"             app:layout_constraintTop_toBottomOf="@+id/toolBarContainer"             tools:listitem="@layout/agent_list_item" />          <TextView             android:id="@+id/noActivityTextView"             android:layout_width="0dp"             android:layout_height="wrap_content"             android:gravity="center"             android:text="@string/no_agents"             android:visibility="@{handler.isVisibleNoItems ? View.VISIBLE : View.GONE}"             app:layout_constraintBottom_toBottomOf="parent"             app:layout_constraintEnd_toEndOf="parent"             app:layout_constraintStart_toStartOf="parent"             app:layout_constraintTop_toBottomOf="@+id/toolBarContainer" />          <include             layout="@layout/progress_bar_layout"             android:visibility="gone" />     </androidx.constraintlayout.widget.ConstraintLayout> </layout> 

here progress_bar_layout.xml

<?xml version="1.0" encoding="utf-8"?> <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"     xmlns:app="http://schemas.android.com/apk/res-auto"     android:id="@+id/containerProgressBarLayout"     android:layout_width="match_parent"     android:layout_height="match_parent"     android:background="#4777"     android:clickable="true"     android:elevation="2dp"     android:focusable="true">      <ProgressBar         android:id="@+id/progressBar"         style="?android:attr/progressBarStyle"         android:layout_width="@dimen/min_height"         android:layout_height="@dimen/min_height"         android:indeterminateTint="@color/colorPrimary"         app:layout_constraintBottom_toBottomOf="parent"         app:layout_constraintEnd_toEndOf="parent"         app:layout_constraintStart_toStartOf="parent"         app:layout_constraintTop_toTopOf="parent" /> </androidx.constraintlayout.widget.ConstraintLayout> 

Here CoroutinesRetrofitActivity.kt

class CoroutinesRetrofitActivity : AppCompatActivity(), AgentListItemAdapter.AdapterListener {     var agentList = ObservableArrayList<Agent>()     private lateinit var binding: CoroutinesRetrofitActivityBinding     private lateinit var coroutinesRetrofitViewModel: CoroutinesRetrofitViewModel     val isVisibleNoItems = ObservableBoolean()       override fun onCreate(savedInstanceState: Bundle?) {         super.onCreate(savedInstanceState)         binding = CoroutinesRetrofitActivityBinding.inflate(layoutInflater)         setContentView(binding.root)         binding.setHandler(this);   this.coroutinesRetrofitViewModel.getIsShowProgress()             .observe(this, object : Observer<Boolean> {                 override fun onChanged(isShowProgress: Boolean?) {                     findViewById<View>(R.id.containerProgressBarLayout).visibility =                         if (isShowProgress!!) View.VISIBLE else View.GONE                 }             });      } 

But when I try to build I get error:

> Task :app:checkDebugDuplicateClasses > Task :app:javaPreCompileDebug  > Task :app:compileDebugJavaWithJavac \testProjects\android\TestProjectAndroidKotlin\app\build\generated\source\kapt\debug\com\android\testproject\android\kotlin\databinding\CoroutinesRetrofitActivityBindingImpl.java:48: error: incompatible types: ProgressBarLayoutBinding cannot be converted to ViewDataBinding         setContainedBinding(this.mboundView01); 

But if I remove from xml this:

 <include             layout="@layout/progress_bar_layout"             android:visibility="gone" /> 

then error is gone.

What is wrong with progress_bar_layout ?

If I direct include progress bar in layout like this:

<?xml version="1.0" encoding="utf-8"?> <layout xmlns:android="http://schemas.android.com/apk/res/android"     xmlns:app="http://schemas.android.com/apk/res-auto"     xmlns:tools="http://schemas.android.com/tools">      <data>          <import type="android.view.View" />          <variable             name="handler"             type="com.android.testproject.android.kotlin.coroutine_retrofit.ui.activity.CoroutinesRetrofitActivity" />      </data>       <androidx.constraintlayout.widget.ConstraintLayout         android:layout_width="match_parent"         android:layout_height="match_parent">          <include             android:id="@+id/toolBarContainer"             layout="@layout/tool_bar"             android:title='@{@string/coroutine_retrofit}'             app:layout_constraintEnd_toEndOf="parent"             app:layout_constraintStart_toStartOf="parent"             app:layout_constraintTop_toTopOf="parent" />          <com.google.android.material.button.MaterialButton             android:id="@+id/buttonRetry"             android:layout_width="wrap_content"             android:layout_height="@dimen/min_height"             android:text="@string/retry"             android:visibility="gone"             app:layout_constraintBottom_toBottomOf="parent"             app:layout_constraintEnd_toEndOf="parent"             app:layout_constraintStart_toStartOf="parent"             app:layout_constraintTop_toBottomOf="@+id/toolBarContainer" />           <androidx.recyclerview.widget.RecyclerView             android:id="@+id/agentsRecyclerView"             android:layout_width="0dp"             android:layout_height="0dp"             android:visibility="@{handler.agentList.size > 0 ? View.VISIBLE : View.GONE}"             app:layout_constraintBottom_toBottomOf="parent"             app:layout_constraintEnd_toEndOf="parent"             app:layout_constraintStart_toStartOf="parent"             app:layout_constraintTop_toBottomOf="@+id/toolBarContainer"             tools:listitem="@layout/agent_list_item" />          <TextView             android:id="@+id/noActivityTextView"             android:layout_width="0dp"             android:layout_height="wrap_content"             android:gravity="center"             android:text="@string/no_agents"             android:visibility="@{handler.isVisibleNoItems ? View.VISIBLE : View.GONE}"             app:layout_constraintBottom_toBottomOf="parent"             app:layout_constraintEnd_toEndOf="parent"             app:layout_constraintStart_toStartOf="parent"             app:layout_constraintTop_toBottomOf="@+id/toolBarContainer" />          <ProgressBar             android:id="@+id/containerProgressBarLayout"             style="?android:attr/progressBarStyle"             android:layout_width="@dimen/min_height"             android:layout_height="@dimen/min_height"             android:indeterminateTint="@color/colorPrimary"             android:visibility="gone"             app:layout_constraintBottom_toBottomOf="parent"             app:layout_constraintEnd_toEndOf="parent"             app:layout_constraintStart_toStartOf="parent"             app:layout_constraintTop_toTopOf="parent" />     </androidx.constraintlayout.widget.ConstraintLayout> </layout> 

the problem is gone.

Why with include not work?

include             layout="@layout/progress_bar_layout"             android:visibility="gone" /> 

Answer 1

I found solution. If outer xml is data binding xml, then inner xml also must be data binding. So progress_bar_layout.xml must be like this:

<?xml version="1.0" encoding="utf-8"?> <layout xmlns:android="http://schemas.android.com/apk/res/android"     xmlns:app="http://schemas.android.com/apk/res-auto">      <androidx.constraintlayout.widget.ConstraintLayout         android:id="@+id/containerProgressBarLayout"         android:layout_width="match_parent"         android:layout_height="match_parent"         android:background="#66545a5a"         android:clickable="true"         android:elevation="2dp"         android:focusable="true">          <ProgressBar             android:id="@+id/progressBar"             style="?android:attr/progressBarStyle"             android:layout_width="@dimen/min_height"             android:layout_height="@dimen/min_height"             android:indeterminateTint="@color/colorPrimary"             app:layout_constraintBottom_toBottomOf="parent"             app:layout_constraintEnd_toEndOf="parent"             app:layout_constraintStart_toStartOf="parent"             app:layout_constraintTop_toTopOf="parent" />     </androidx.constraintlayout.widget.ConstraintLayout>  </layout> 

Answer 2

In progress_bar_layout use below line (m also not sure it works for you or not because I didn't try yet but if it works then I will add more clarification)

Maybe this error is for combining view binding and data binding. View binding doesn't support layout variables

<androidx.constraintlayout.widget.ConstraintLayout     ...     tools:viewBindingIgnore="true" > ... </androidx.constraintlayout.widget.ConstraintLayout>