Myujth

I made a layout that must be used for 2 POJO. So i created an Interface like this:

public interface GameItemParent 
 ...
 boolean isChecked();

One of child classes:

public class FavoriteGame implements GameItemParent,Observable 
 @SerializedName(SerCons.C_CHECKED) private int checked;

 private PropertyChangeRegistry registry = new PropertyChangeRegistry();

 public FavoriteGame() 
 

 @Bindable public boolean isChecked() 
 return checked == 1;
 

 public void setChecked(boolean checked, boolean notifyObserver) 
 this.checked = checked ? 1 : 0;
 if (notifyObserver)
 registry.notifyChange(this, BR.checked);
 

 public void inverseChecked() 
 setChecked(!isChecked(), true);
 

 @Override public void addOnPropertyChangedCallback(OnPropertyChangedCallback callback) 
 registry.add(callback);
 

 @Override public void removeOnPropertyChangedCallback(OnPropertyChangedCallback callback) 
 registry.remove(callback);
 
 ...

the XML file that listens to 'isChecked' changes:

<?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="game"
 type="com.consoleco.console.objectParents.GameItemParent"
 />
 </data>
 <androidx.constraintlayout.widget.ConstraintLayout
 .../>
 <androidx.appcompat.widget.AppCompatCheckBox
 android:id="@+id/checkBox"
 android:layout_width="wrap_content"
 android:layout_height="wrap_content"
 android:checked="@game.checked"
 android:visibility="@game.hasCheckButton() ? View.VISIBLE : View.GONE"
 app:buttonTint="?attr/colorAccent"
 app:layout_constraintBottom_toBottomOf="@+id/icon"
 app:layout_constraintEnd_toEndOf="@+id/icon"
 app:layout_constraintStart_toEndOf="@+id/icon"
 app:layout_constraintTop_toBottomOf="@+id/icon"
 />
 </androidx.constraintlayout.widget.ConstraintLayout>
</layout>

As you noticed, I declared 'GameItemParent' interface as 'game' data. Because I have to use this XML for another child too.

Now when I change 'isChecked' at runtime, the UI (actually the checkbox) doesn't get change.

The GameItemParent is a simple interface and therefore the binding library only knows about the property itself. It should be working, when it also extends the Observable:

public interface GameItemParent extends Observable 
 ...
 @Bindable boolean isChecked();