Constraint layout with data binding

Question

When use simple constraint layout it's working fine but when use data binding then it's not running,and preview is randering wrong and also binding methods are not finding show error **Found data binding errors. ****/ data binding error ****msg:Listener class android.view.View.OnClickListener with method onClick did not match signature of any method item::onCardClick /app/src/main/res/layout/activity_main.xml loc:16:27 - 16:43 ****\ data binding error ******

Without data binding

 <?xml version="1.0" encoding="utf-8"?>
<android.support.constraint.ConstraintLayout
    android:id="@+id/linearLayout"
    xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:paddingLeft="24dp"
    android:paddingRight="24dp"
    android:paddingTop="14dp">

    <TextView
        android:id="@+id/textView"
        android:layout_width="0dp"
        android:layout_height="wrap_content"
        android:layout_marginRight="16dp"
        android:text="Hello First"
        app:layout_constraintBottom_toTopOf="@id/button"
        app:layout_constraintEnd_toStartOf="@id/imageView"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toTopOf="@id/imageView"/>

    <TextView
        android:id="@+id/button"
        android:layout_width="0dp"
        android:layout_height="wrap_content"
        android:layout_marginRight="16dp"
        android:text="Hello Second"
        app:layout_constraintBottom_toBottomOf="@id/imageView"
        app:layout_constraintEnd_toStartOf="@id/imageView"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toBottomOf="@id/textView"/>

    <ImageView
        android:id="@+id/imageView"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        app:layout_constraintBottom_toTopOf="@id/line"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintHorizontal_bias="1"
        android:adjustViewBounds="true"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toTopOf="parent"
        app:srcCompat="@mipmap/ic_launcher_round"/>

    <TextView
        android:id="@+id/line"
        android:layout_width="match_parent"
        android:layout_height="1dp"
        android:layout_marginTop="14dp"
        android:background="@color/colorPrimaryDark"
        app:layout_constraintBottom_toBottomOf="parent"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toBottomOf="@id/imageView"/>
</android.support.constraint.ConstraintLayout>

With databinding

<?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">

    <data>

        <variable
            name="item"
            type="com.rv.cnstnt_example.MyPojoClass"/>
    </data>

    <android.support.constraint.ConstraintLayout
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:paddingLeft="24dp"
        android:paddingRight="24dp"
        android:onClick="@{item::onCardClick}"
        android:paddingTop="14dp">

        <TextView
            android:id="@+id/textView"
            android:layout_width="0dp"
            android:layout_height="wrap_content"
            android:layout_marginRight="16dp"
            android:text="@{item.name}"
            app:layout_constraintBottom_toTopOf="@id/button"
            app:layout_constraintEnd_toStartOf="@id/imageView"
            app:layout_constraintStart_toStartOf="parent"
            app:layout_constraintTop_toTopOf="@id/imageView"/>

        <TextView
            android:id="@+id/button"
            android:layout_width="0dp"
            android:layout_height="wrap_content"
            android:layout_marginRight="16dp"
            android:text="@{item.dob}"
            app:layout_constraintBottom_toBottomOf="@id/imageView"
            app:layout_constraintEnd_toStartOf="@id/imageView"
            app:layout_constraintStart_toStartOf="parent"
            app:layout_constraintTop_toBottomOf="@id/textView"/>

        <ImageView
            android:id="@+id/imageView"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:adjustViewBounds="true"
            app:layout_constraintBottom_toTopOf="@id/line"
            app:layout_constraintEnd_toEndOf="parent"
            app:layout_constraintHorizontal_bias="1"
            app:layout_constraintStart_toStartOf="parent"
            app:layout_constraintTop_toTopOf="parent"
            app:srcCompat="@mipmap/ic_launcher_round"/>

        <TextView
            android:id="@+id/line"
            android:layout_width="match_parent"
            android:layout_height="1dp"
            android:layout_marginTop="14dp"
            android:background="@color/colorPrimaryDark"
            app:layout_constraintBottom_toBottomOf="parent"
            app:layout_constraintEnd_toEndOf="parent"
            app:layout_constraintStart_toStartOf="parent"
            app:layout_constraintTop_toBottomOf="@id/imageView"/>
    </android.support.constraint.ConstraintLayout>
</layout>

MyPojoClass.java

   public class MyPojoClass
{
    private String name = "Vineet";
    private String dob = "22 jun 2018";

    public String getName()
    {
        return name;
    }

    public void setName(String name)
    {
        this.name = name;
    }

    public String getDob()
    {
        return dob;
    }

    public void setDob(String dob)
    {
        this.dob = dob;
    }

    public void onCardClick(){
        Log.e("DATA","CLICK");
    }
}

Answer 1

in MyPojoClass class change the method onCardClick to accept View as an argument. It should be

public void onCardClick(View view) { 
     Log.e("DATA","CLICK"); 
}