I have a DataBinding class ActivityMainBinding
where the XMl looks like this
<?xml version="1.0" encoding="utf-8"?>
<layout>
<android.support.design.widget.CoordinatorLayout 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"
android:id="@+id/container"
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:context=".MainActivity">
<include layout="@layout/content_main" />
<android.support.design.widget.FloatingActionButton
android:id="@+id/fab"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="bottom|end"
android:layout_margin="@dimen/fab_margin"
app:srcCompat="@drawable/ic_add" />
</android.support.design.widget.CoordinatorLayout>
</layout>
And the content_main.xml is another binding
<?xml version="1.0" encoding="utf-8"?>
<layout>
<android.support.constraint.ConstraintLayout 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"
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:context=".MainActivity"
tools:showIn="@layout/activity_main">
<android.support.v7.widget.RecyclerView
android:id="@+id/recyclerView"
android:layout_width="0dp"
android:layout_height="0dp"
android:clickable="true"
android:focusable="true"
android:focusableInTouchMode="true"
android:scrollbars="vertical"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintLeft_toLeftOf="parent"
app:layout_constraintRight_toRightOf="parent"
app:layout_constraintTop_toTopOf="parent" />
</android.support.constraint.ConstraintLayout>
</layout>
Now, in my activity I set the content view like this.
ActivityMainBinding activityMainBinding = DataBindingUtil.setContentView(this, R.layout.activity_main);
Now I can access all XML elemets using this binding. like
Toolbar toolbar = activityMainBinding.toolbar;
but some of my widgets are in the included layout which is ContentMainBinding
Now, how can I create a ContentMainBinding
instance from ActivityMainBinding
?
I tried
contentMainBinding = DataBindingUtil.getBinding(activityMainBinding.container);
But, its crashing with error
ActivityMainBindingImpl cannot be cast to ContentMainBinding
There is no need to add <layout>----</layout>
tag in your content_main.xml file. You need to set id of included layout like :
<?xml version="1.0" encoding="utf-8"?>
<layout>
<android.support.design.widget.CoordinatorLayout 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"
android:id="@+id/container"
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:context=".MainActivity">
<include layout="@layoutcontent_main" android:id="@+id/contentMain" />
<android.support.design.widget.FloatingActionButton
android:id="@+id/fab"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="bottom|end"
android:layout_margin="@dimen/fab_margin"
app:srcCompat="@drawable/ic_add" />
</android.support.design.widget.CoordinatorLayout>
</layout>
Then you can directly access included layout view using
ActivityMainBinding activityMainBinding = DataBindingUtil.setContentView(this, R.layout.activity_main);
activityMainBinding.contentMain.recyclerView.setAdapter();