Styjun

The Error:

java.lang.NullPointerException: Attempt to invoke virtual method 'void android.databinding.ViewDataBinding.executePendingBindings()' on a null object reference

I double checked the names to the references used. Seems fine to me. I don't know why I keep getting this error. The view crashes as soon as I open it.

protected void onCreate(Bundle savedInstanceState) 
 super.onCreate(savedInstanceState);
 setContentView(R.layout.activity_findfriend);

 searcher = Searcher.create(ALGOLIA_APP_ID, ALGOLIA_SEARCH_API_KEY, ALGOLIA_INDEX_NAME);
 helper = new InstantSearch(this, searcher);
 helper.search();



 // Get a reference to your Hits widget
 final Hits hits = (Hits) findViewById(R.id.hits);

// Add an OnItemClickListener
 hits.setOnItemClickListener(new ItemClickSupport.OnItemClickListener() 
 @Override
 public void onItemClick(RecyclerView recyclerView, int position, View v) 
 JSONObject hit = hits.get(position);
 // Do something with the hit
 
 );


@Override
protected void onDestroy() 
 searcher.destroy();
 super.onDestroy();

}

Here's my Activity:

activity_findfriend.xml

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
xmlns:algolia="http://schemas.android.com/apk/res-auto"
android:paddingTop="0dp"
android:background="@color/white">

<LinearLayout
 android:id="@+id/search_emoji"
 android:layout_width="match_parent"
 android:layout_height="60dp"
 android:layout_alignParentStart="true"
 android:layout_alignParentTop="true"
 android:layout_marginStart="0dp"
 android:layout_marginTop="0dp"
 android:background="@drawable/search_drawable"
 android:gravity="top"
 android:paddingTop="8dp"
 android:orientation="horizontal">

 <com.algolia.instantsearch.ui.views.SearchBox
 android:id="@+id/searchBox"
 android:layout_width="match_parent"
 android:layout_height="wrap_content"
 android:background="@drawable/message_rectangle"
 android:layout_marginRight="12dp"
 android:layout_marginLeft="12dp"/>
</LinearLayout>

<LinearLayout
 android:layout_width="match_parent"
 android:layout_height="match_parent"
 android:layout_below="@+id/search_emoji">

 <com.algolia.instantsearch.ui.views.Hits
 android:id="@+id/hits"
 android:layout_width="match_parent"
 android:layout_height="wrap_content"
 algolia:itemLayout="@layout/hits_item"
 android:layout_below="@+id/search_emoji"/>
</LinearLayout>

To use data binding in your layout, wrap it in a <layout> root tag.

New hits_item.xml

<?xml version="1.0" encoding="utf-8"?>
<layout xmlns:algolia="http://schemas.android.com/apk/res-auto">
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"

android:orientation="horizontal"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:clickable="true"
android:focusable="true"
android:id="@+id/hits_items">
<de.hdodenhof.circleimageview.CircleImageView
 xmlns:app="http://schemas.android.com/apk/res-auto"
 android:id="@+id/user_image"
 android:layout_width="100dp"
 android:layout_height="100dp"
 app:civ_border_width="4dp"
 android:layout_marginStart="8dp"
 android:layout_marginTop="20dp"
 android:src="@drawable/profile_thumbnail"
 app:civ_border_color="#c42f92"
 algolia:attribute='@"image"'/>
<TextView
 android:id="@+id/user_name"
 android:paddingTop="53dp"
 android:paddingLeft="20dp"
 android:textSize="20dp"
 android:layout_width="wrap_content"
 android:layout_height="wrap_content"
 algolia:attribute='@"username"'
 algolia:highlighted='@true'/>
</LinearLayout>
</layout>