diff --git a/README.md b/README.md
index 4d8355b..181c3b2 100644
--- a/README.md
+++ b/README.md
@@ -33,7 +33,7 @@ dependencies {
 # Usage
 Example of usage in xml layout
 ```
-com.omega_r.libs.omegarecyclerview.OmegaRecyclerView
+<com.omega_r.libs.omegarecyclerview.OmegaRecyclerView
         android:id="@+id/custom_recycler_view"
         android:layout_width="match_parent"
         android:layout_height="match_parent"
@@ -306,7 +306,7 @@ Adding OmegaExpandableRecyclerView to layout:
 
 Create adapter like following:
 ```
-public class ExpandableAdapter extends OmegaExpandableRecyclerView.Adapter<QuoteGlobalInfo, String> {
+public class ExpandableAdapter extends OmegaExpandableRecyclerView.Adapter<QuoteGlobalInfo, Quote> {
 
     @Override
     protected ExGroupViewHolder provideGroupViewHolder(@NonNull ViewGroup viewGroup) {
@@ -353,8 +353,8 @@ public class ExpandableAdapter extends OmegaExpandableRecyclerView.Adapter<Quote
         }
 
         @Override
-        protected void onBind(String item) {
-            textView.setText(item);
+        protected void onBind(Quote item) {
+            textView.setText(item.getQuote());
         }
     }
 }
@@ -362,9 +362,10 @@ public class ExpandableAdapter extends OmegaExpandableRecyclerView.Adapter<Quote
 
 Use one of the following methods to set items for adapter or use adapter constructors:
 ```
-void setItems(@NonNull List<ExpandableViewData<G, CH>> expandableViewData)
-void setItems(ExpandableViewData<G, CH>... expandableViewData)
-void setItems(GroupProvider<G, CH>... groupProviders)
+public final void setItems(@NonNull List<ExpandableViewData<G, CH>> expandableViewData)
+public final void setItems(ExpandableViewData<G, CH>... expandableViewData)
+public final void setItemsAsGroupProviders(GroupProvider<G, CH>... groupProviders)
+public final void setItemsAsGroupProviders(@NonNull List<GroupProvider<G, CH>> groupProviders)
 ```
 
 Your view data (group and childs) should be wrapped with ```ExpandableViewData``` using one of the following ways:
@@ -387,6 +388,12 @@ public interface GroupProvider<G, CH> {
 }
 ```
 
+It is available to update only child item using 
+```
+// Adapter
+public void notifyChildChanged(CH child)
+```
+
 You can set expandMode and childAnimation both with xml attr and programmatically
 
 *Available expandModes are single and multiple*
diff --git a/app/src/main/java/com/omega_r/omegarecyclerview/ListAdapterExample/ListAdapter.java b/app/src/main/java/com/omega_r/omegarecyclerview/ListAdapterExample/ListAdapter.java
index 98c89ac..53aa337 100644
--- a/app/src/main/java/com/omega_r/omegarecyclerview/ListAdapterExample/ListAdapter.java
+++ b/app/src/main/java/com/omega_r/omegarecyclerview/ListAdapterExample/ListAdapter.java
@@ -3,6 +3,7 @@
 import android.view.ViewGroup;
 import android.widget.TextView;
 
+import androidx.annotation.NonNull;
 import com.omega_r.libs.omegarecyclerview.BaseListAdapter;
 import com.omega_r.omegarecyclerview.R;
 
@@ -13,8 +14,9 @@ public ListAdapter(BaseListAdapter.OnItemClickListener<String> clickListener,
         super(clickListener, longClickListener);
     }
 
+    @NonNull
     @Override
-    protected ViewHolder provideViewHolder(ViewGroup parent) {
+    public ViewHolder onCreateViewHolder(@NonNull ViewGroup parent, int viewType) {
         return new SampleViewHolder(parent);
     }
 
diff --git a/app/src/main/java/com/omega_r/omegarecyclerview/expandable_example/core/ExpandableActivity.java b/app/src/main/java/com/omega_r/omegarecyclerview/expandable_example/core/ExpandableActivity.java
index 7492751..eea5621 100644
--- a/app/src/main/java/com/omega_r/omegarecyclerview/expandable_example/core/ExpandableActivity.java
+++ b/app/src/main/java/com/omega_r/omegarecyclerview/expandable_example/core/ExpandableActivity.java
@@ -3,6 +3,9 @@
 import android.os.Bundle;
 import androidx.annotation.LayoutRes;
 import androidx.appcompat.app.AppCompatActivity;
+
+import android.view.View;
+import android.widget.Button;
 import android.widget.CompoundButton;
 import android.widget.RadioButton;
 
@@ -10,8 +13,12 @@
 import com.omega_r.libs.omegarecyclerview.expandable_recycler_view.animation.ExpandableItemAnimator;
 import com.omega_r.libs.omegarecyclerview.expandable_recycler_view.animation.standard_animations.DropDownItemAnimator;
 import com.omega_r.libs.omegarecyclerview.expandable_recycler_view.animation.standard_animations.FadeItemAnimator;
+import com.omega_r.libs.omegarecyclerview.expandable_recycler_view.data.GroupProvider;
 import com.omega_r.omegarecyclerview.R;
 
+import java.util.Arrays;
+import java.util.List;
+
 import omega.com.annotations.OmegaActivity;
 
 @OmegaActivity
@@ -27,6 +34,8 @@ protected OmegaExpandableRecyclerView.Adapter provideAdapter() {
         return new ExpandableAdapter();
     }
 
+    private List<? extends GroupProvider<QuoteGlobalInfo, Quote>> items;
+
     @LayoutRes
     protected int provideContentLayoutRes() {
         return R.layout.activity_expandable;
@@ -37,9 +46,46 @@ protected void onCreate(Bundle savedInstanceState) {
         super.onCreate(savedInstanceState);
         setContentView(provideContentLayoutRes());
 
+        createItems();
+
         setupRecyclerView();
         setupRadioButtons();
         fillAdapter();
+
+        findViewById(R.id.button_test_update_child).setOnClickListener(new View.OnClickListener() {
+            @Override
+            public void onClick(View v) {
+                Quote quote = items.get(3).provideChilds().get(1);
+                quote.setQuote("UPDATED QUOTE");
+                mAdapter.notifyChildChanged(quote);
+            }
+        });
+    }
+
+    private void createItems() {
+        items = Arrays.asList(
+                SimpleData.from(
+                        new QuoteGlobalInfo(getString(R.string.group_text_1), 1500),
+                        new Quote(getString(R.string.child_text_1))
+                ),
+                SimpleData.from(
+                        new QuoteGlobalInfo(getString(R.string.group_text_2), 1500),
+                        new Quote(getString(R.string.child_text_2))
+                ),
+                SimpleData.from(
+                        new QuoteGlobalInfo(getString(R.string.group_text_3), 1914),
+                        new Quote(getString(R.string.child_text_3)),
+                        new Quote(getString(R.string.child_text_5))
+                ),
+                SimpleData.from(
+                        new QuoteGlobalInfo(getString(R.string.group_text_5), 1914),
+                        new Quote(getString(R.string.child_text_1)),
+                        new Quote(getString(R.string.child_text_2)),
+                        new Quote(getString(R.string.child_text_3)),
+                        new Quote(getString(R.string.child_text_4)),
+                        new Quote(getString(R.string.child_text_5))
+                )
+        );
     }
 
     protected void setupRecyclerView() {
@@ -48,19 +94,7 @@ protected void setupRecyclerView() {
     }
 
     protected void fillAdapter() {
-        mAdapter.setItems(
-                SimpleData.from(new QuoteGlobalInfo(getString(R.string.group_text_1), 1500), getString(R.string.child_text_1)),
-                SimpleData.from(new QuoteGlobalInfo(getString(R.string.group_text_2), 1500), getString(R.string.child_text_2)),
-                SimpleData.from(new QuoteGlobalInfo(getString(R.string.group_text_3), 1914),
-                        getString(R.string.child_text_3),
-                        getString(R.string.child_text_5)),
-                SimpleData.from(new QuoteGlobalInfo(getString(R.string.group_text_5), 1914),
-                        getString(R.string.child_text_1),
-                        getString(R.string.child_text_2),
-                        getString(R.string.child_text_3),
-                        getString(R.string.child_text_4),
-                        getString(R.string.child_text_5))
-        );
+        mAdapter.setItemsAsGroupProviders(items);
     }
 
     protected void setupRadioButtons() {
diff --git a/app/src/main/java/com/omega_r/omegarecyclerview/expandable_example/core/ExpandableAdapter.java b/app/src/main/java/com/omega_r/omegarecyclerview/expandable_example/core/ExpandableAdapter.java
index ef51a72..e687e74 100644
--- a/app/src/main/java/com/omega_r/omegarecyclerview/expandable_example/core/ExpandableAdapter.java
+++ b/app/src/main/java/com/omega_r/omegarecyclerview/expandable_example/core/ExpandableAdapter.java
@@ -7,7 +7,7 @@
 import com.omega_r.libs.omegarecyclerview.expandable_recycler_view.OmegaExpandableRecyclerView;
 import com.omega_r.omegarecyclerview.R;
 
-public class ExpandableAdapter extends OmegaExpandableRecyclerView.Adapter<QuoteGlobalInfo, String> {
+public class ExpandableAdapter extends OmegaExpandableRecyclerView.Adapter<QuoteGlobalInfo, Quote> {
 
     @Override
     protected ExGroupViewHolder provideGroupViewHolder(@NonNull ViewGroup viewGroup) {
@@ -54,8 +54,8 @@ class ExChildViewHolder extends ChildViewHolder {
         }
 
         @Override
-        protected void onBind(String item) {
-            textView.setText(item);
+        protected void onBind(Quote item) {
+            textView.setText(item.getQuote());
         }
     }
 }
diff --git a/app/src/main/java/com/omega_r/omegarecyclerview/expandable_example/core/Quote.java b/app/src/main/java/com/omega_r/omegarecyclerview/expandable_example/core/Quote.java
new file mode 100644
index 0000000..c9b1456
--- /dev/null
+++ b/app/src/main/java/com/omega_r/omegarecyclerview/expandable_example/core/Quote.java
@@ -0,0 +1,30 @@
+package com.omega_r.omegarecyclerview.expandable_example.core;
+
+public class Quote {
+    private String mQuote;
+
+    public Quote(String quote) {
+        mQuote = quote;
+    }
+
+    public String getQuote() {
+        return mQuote;
+    }
+
+    public void setQuote(String quote) {
+        mQuote = quote;
+    }
+
+    @Override
+    public boolean equals(Object o) {
+        if (this == o) return true;
+        if (o == null || getClass() != o.getClass()) return false;
+        Quote quote = (Quote) o;
+        return mQuote.equals(quote.mQuote);
+    }
+
+    @Override
+    public int hashCode() {
+        return mQuote.hashCode();
+    }
+}
diff --git a/app/src/main/java/com/omega_r/omegarecyclerview/expandable_example/core/SimpleData.java b/app/src/main/java/com/omega_r/omegarecyclerview/expandable_example/core/SimpleData.java
index 7226a9a..fa40ca3 100644
--- a/app/src/main/java/com/omega_r/omegarecyclerview/expandable_example/core/SimpleData.java
+++ b/app/src/main/java/com/omega_r/omegarecyclerview/expandable_example/core/SimpleData.java
@@ -7,16 +7,16 @@
 import java.util.Arrays;
 import java.util.List;
 
-public class SimpleData implements GroupProvider<QuoteGlobalInfo, String> {
+public class SimpleData implements GroupProvider<QuoteGlobalInfo, Quote> {
 
     private QuoteGlobalInfo mQuoteGlobalInfo;
-    private List<String> mQuotes;
+    private List<Quote> mQuotes;
 
-    public static SimpleData from(QuoteGlobalInfo title, String... quotes) {
+    public static SimpleData from(QuoteGlobalInfo title, Quote... quotes) {
         return new SimpleData(title, Arrays.asList(quotes));
     }
 
-    public SimpleData(QuoteGlobalInfo quoteGlobalInfo, List<String> quotes) {
+    public SimpleData(QuoteGlobalInfo quoteGlobalInfo, List<Quote> quotes) {
         mQuoteGlobalInfo = quoteGlobalInfo;
         mQuotes = quotes;
     }
@@ -29,11 +29,11 @@ public void setQuoteGlobalInfo(QuoteGlobalInfo quoteGlobalInfo) {
         mQuoteGlobalInfo = quoteGlobalInfo;
     }
 
-    public List<String> getQuotes() {
+    public List<Quote> getQuotes() {
         return mQuotes;
     }
 
-    public void setQuotes(List<String> quotes) {
+    public void setQuotes(List<Quote> quotes) {
         mQuotes = quotes;
     }
 
@@ -43,7 +43,7 @@ public QuoteGlobalInfo provideGroup() {
     }
 
     @Override
-    public List<String> provideChilds() {
+    public List<Quote> provideChilds() {
         return mQuotes;
     }
 
diff --git a/app/src/main/java/com/omega_r/omegarecyclerview/expandable_example/support_sticky/DefaultStickyAdapter.java b/app/src/main/java/com/omega_r/omegarecyclerview/expandable_example/support_sticky/DefaultStickyAdapter.java
index 406fc48..7bafeae 100644
--- a/app/src/main/java/com/omega_r/omegarecyclerview/expandable_example/support_sticky/DefaultStickyAdapter.java
+++ b/app/src/main/java/com/omega_r/omegarecyclerview/expandable_example/support_sticky/DefaultStickyAdapter.java
@@ -11,9 +11,10 @@
 import com.omega_r.libs.omegarecyclerview.sticky_decoration.StickyAdapter;
 import com.omega_r.libs.omegarecyclerview.sticky_decoration.HeaderStickyDecoration;
 import com.omega_r.omegarecyclerview.R;
+import com.omega_r.omegarecyclerview.expandable_example.core.Quote;
 import com.omega_r.omegarecyclerview.expandable_example.core.QuoteGlobalInfo;
 
-public class DefaultStickyAdapter extends OmegaExpandableRecyclerView.Adapter<QuoteGlobalInfo, String> implements StickyAdapter<DefaultStickyAdapter.StickyViewHolder> {
+public class DefaultStickyAdapter extends OmegaExpandableRecyclerView.Adapter<QuoteGlobalInfo, Quote> implements StickyAdapter<DefaultStickyAdapter.StickyViewHolder> {
 
     @Override
     protected ExGroupViewHolder provideGroupViewHolder(@NonNull ViewGroup viewGroup) {
@@ -27,7 +28,7 @@ protected ExChildViewHolder provideChildViewHolder(@NonNull ViewGroup viewGroup)
 
     @Override
     public long getStickyId(int position) {
-        ExpandableViewData<QuoteGlobalInfo, String> item = getItem(position);
+        ExpandableViewData<QuoteGlobalInfo, Quote> item = getItem(position);
         if (item == null) return HeaderStickyDecoration.NO_STICKY_ID;
         Integer providedId = item.getStickyId();
         return providedId == null ? HeaderStickyDecoration.NO_STICKY_ID : providedId;
@@ -78,8 +79,8 @@ class ExChildViewHolder extends ChildViewHolder {
         }
 
         @Override
-        protected void onBind(String item) {
-            textView.setText(item);
+        protected void onBind(Quote item) {
+            textView.setText(item.getQuote());
         }
     }
 
diff --git a/app/src/main/res/layout/activity_expandable.xml b/app/src/main/res/layout/activity_expandable.xml
index fc15ab7..2994287 100644
--- a/app/src/main/res/layout/activity_expandable.xml
+++ b/app/src/main/res/layout/activity_expandable.xml
@@ -29,6 +29,12 @@
             android:text="@string/button_use_dropdown"
             android:textColor="@color/white"/>
 
+        <Button
+            android:id="@+id/button_test_update_child"
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:text="@string/test_update_child" />
+
     </RadioGroup>
 
     <RadioGroup
diff --git a/app/src/main/res/values/strings.xml b/app/src/main/res/values/strings.xml
index b27afa4..2d929f3 100644
--- a/app/src/main/res/values/strings.xml
+++ b/app/src/main/res/values/strings.xml
@@ -32,4 +32,5 @@
     <string name="button_core">Core</string>
     <string name="button_support_sticky">Sticky header support</string>
     <string name="button_group_sticky">Group as sticky header</string>
+    <string name="test_update_child">Test update child</string>
 </resources>
diff --git a/build.gradle b/build.gradle
index e1bad81..bc21507 100644
--- a/build.gradle
+++ b/build.gradle
@@ -7,7 +7,7 @@ buildscript {
         google()
     }
     dependencies {
-        classpath 'com.android.tools.build:gradle:3.3.2'
+        classpath 'com.android.tools.build:gradle:3.5.0'
         classpath 'com.github.dcendents:android-maven-gradle-plugin:2.1'
 
         // NOTE: Do not place your application dependencies here; they belong
diff --git a/gradle/wrapper/gradle-wrapper.properties b/gradle/wrapper/gradle-wrapper.properties
index 932dee8..df55377 100644
--- a/gradle/wrapper/gradle-wrapper.properties
+++ b/gradle/wrapper/gradle-wrapper.properties
@@ -1,6 +1,6 @@
-#Wed Mar 06 12:09:01 MSK 2019
+#Fri Aug 23 11:22:57 MSK 2019
 distributionBase=GRADLE_USER_HOME
 distributionPath=wrapper/dists
 zipStoreBase=GRADLE_USER_HOME
 zipStorePath=wrapper/dists
-distributionUrl=https\://services.gradle.org/distributions/gradle-4.10.1-all.zip
+distributionUrl=https\://services.gradle.org/distributions/gradle-5.4.1-all.zip
diff --git a/omegarecyclerviewlibs/build.gradle b/omegarecyclerviewlibs/build.gradle
index 6ec272e..8dd5e19 100644
--- a/omegarecyclerviewlibs/build.gradle
+++ b/omegarecyclerviewlibs/build.gradle
@@ -25,7 +25,6 @@ android {
 
 dependencies {
     implementation fileTree(dir: 'libs', include: ['*.jar'])
-    implementation 'androidx.appcompat:appcompat:1.1.0-alpha01'
-    implementation 'com.google.android.material:material:1.1.0-alpha02'
-
+    implementation 'androidx.appcompat:appcompat:1.1.0-rc01'
+    implementation 'com.google.android.material:material:1.1.0-alpha09'
 }
diff --git a/omegarecyclerviewlibs/src/main/java/com/omega_r/libs/omegarecyclerview/BaseListAdapter.java b/omegarecyclerviewlibs/src/main/java/com/omega_r/libs/omegarecyclerview/BaseListAdapter.java
index 66d7754..2060dba 100644
--- a/omegarecyclerviewlibs/src/main/java/com/omega_r/libs/omegarecyclerview/BaseListAdapter.java
+++ b/omegarecyclerviewlibs/src/main/java/com/omega_r/libs/omegarecyclerview/BaseListAdapter.java
@@ -10,18 +10,13 @@
 
 public abstract class BaseListAdapter<T> extends OmegaRecyclerView.Adapter<BaseListAdapter<T>.ViewHolder> {
 
-    private static final int INDEX_NOT_FOUND = -1;
-
     private List<T> items;
 
     @Nullable
-    private OnItemClickListener<T> clickListener = null;
+    private OnItemClickListener<T> clickListener;
 
     @Nullable
-    private OnItemLongClickListener<T> longClickListener = null;
-
-
-    protected abstract BaseListAdapter<T>.ViewHolder provideViewHolder(ViewGroup parent);
+    private OnItemLongClickListener<T> longClickListener;
 
     public BaseListAdapter(@NonNull List<T> items,
                            @Nullable OnItemClickListener<T> clickListener,
@@ -99,13 +94,6 @@ private void onLongItemClick(T item) {
         }
     }
 
-    @NonNull
-    @Override
-    public BaseListAdapter<T>.ViewHolder onCreateViewHolder(@NonNull ViewGroup parent, int viewType) {
-        return provideViewHolder(parent);
-    }
-
-    @SuppressWarnings("unchecked")
     @Override
     public void onBindViewHolder(@NonNull BaseListAdapter<T>.ViewHolder holder, int position) {
         holder.bind(getItem(position));
@@ -116,7 +104,9 @@ public int getItemCount() {
         return items.size();
     }
 
-    public abstract class ViewHolder extends OmegaRecyclerView.ViewHolder implements View.OnClickListener, View.OnLongClickListener {
+    public abstract class ViewHolder extends OmegaRecyclerView.ViewHolder implements
+            View.OnClickListener,
+            View.OnLongClickListener {
 
         private T item;
 
@@ -134,6 +124,7 @@ private void bind(T item) {
             if (clickListener != null) {
                 itemView.setOnClickListener(this);
             }
+
             if (longClickListener != null) {
                 itemView.setOnLongClickListener(this);
             }
diff --git a/omegarecyclerviewlibs/src/main/java/com/omega_r/libs/omegarecyclerview/OmegaRecyclerView.java b/omegarecyclerviewlibs/src/main/java/com/omega_r/libs/omegarecyclerview/OmegaRecyclerView.java
index 855e7f0..436b941 100644
--- a/omegarecyclerviewlibs/src/main/java/com/omega_r/libs/omegarecyclerview/OmegaRecyclerView.java
+++ b/omegarecyclerviewlibs/src/main/java/com/omega_r/libs/omegarecyclerview/OmegaRecyclerView.java
@@ -65,6 +65,7 @@ public class OmegaRecyclerView extends ExpandedRecyclerView implements SwipeMenu
     private DividerItemDecoration mDividerItemDecoration;
     private int mItemSpace;
     private int mDividerSize;
+    private boolean mIsAdapterConnected;
 
     public OmegaRecyclerView(Context context) {
         super(context);
@@ -175,6 +176,7 @@ private void initStickyMode(TypedArray a) {
     @Override
     @SuppressWarnings("unchecked")
     public void setAdapter(RecyclerView.Adapter adapter) {
+        mIsAdapterConnected = true;
         unregisterObservers();
 
         if (adapter == null) {
@@ -303,6 +305,38 @@ public void addView(View view, int index, ViewGroup.LayoutParams params) {
         }
     }
 
+    @Override
+    public int getChildCount() {
+        if (!mIsAdapterConnected && areSectionsInitialized())  {
+            return super.getChildCount() + mHeadersList.size() + mFooterList.size();
+        }
+
+        return super.getChildCount();
+    }
+
+    @Override
+    public View getChildAt(int index) {
+        if (!mIsAdapterConnected && areSectionsInitialized()) {
+            int realChildrenCount = super.getChildCount();
+            int headersCount = mHeadersList.size();
+            int footersCount = mFooterList.size();
+
+            if (index < realChildrenCount) {
+                return super.getChildAt(index);
+            } else if (index < realChildrenCount + headersCount) {
+                return mHeadersList.get(index - realChildrenCount);
+            } else if (index < realChildrenCount + headersCount + footersCount) {
+                return mFooterList.get(index - realChildrenCount - headersCount);
+            }
+
+        }
+        return super.getChildAt(index);
+    }
+
+    private boolean areSectionsInitialized() {
+        return mHeadersList != null && mFooterList != null;
+    }
+
     @Override
     protected void onFinishInflate() {
         super.onFinishInflate();
diff --git a/omegarecyclerviewlibs/src/main/java/com/omega_r/libs/omegarecyclerview/expandable_recycler_view/OmegaExpandableRecyclerView.java b/omegarecyclerviewlibs/src/main/java/com/omega_r/libs/omegarecyclerview/expandable_recycler_view/OmegaExpandableRecyclerView.java
index 5c86959..fefbce8 100644
--- a/omegarecyclerviewlibs/src/main/java/com/omega_r/libs/omegarecyclerview/expandable_recycler_view/OmegaExpandableRecyclerView.java
+++ b/omegarecyclerviewlibs/src/main/java/com/omega_r/libs/omegarecyclerview/expandable_recycler_view/OmegaExpandableRecyclerView.java
@@ -329,9 +329,18 @@ public Adapter() {
 
         @NonNull
         private List<ExpandableViewData<G, CH>> convertFrom(GroupProvider<G, CH>[] groupProviders) {
+            return convertFrom(Arrays.asList(groupProviders));
+        }
+
+        @NonNull
+        private List<ExpandableViewData<G, CH>> convertFrom(List<GroupProvider<G, CH>> groupProviders) {
             List<ExpandableViewData<G, CH>> expandableViewData = new ArrayList<>();
             for (GroupProvider<G, CH> groupProvider : groupProviders) {
-                expandableViewData.add(ExpandableViewData.of(groupProvider.provideGroup(), groupProvider.provideStickyId(), groupProvider.provideChilds()));
+                expandableViewData.add(ExpandableViewData.of(
+                        groupProvider.provideGroup(),
+                        groupProvider.provideStickyId(),
+                        groupProvider.provideChilds()
+                ));
             }
             return expandableViewData;
         }
@@ -347,7 +356,11 @@ public final void setItems(ExpandableViewData<G, CH>... expandableViewData) {
         }
 
         @SafeVarargs
-        public final void setItems(GroupProvider<G, CH>... groupProviders) {
+        public final void setItemsAsGroupProviders(GroupProvider<G, CH>... groupProviders) {
+            setItems(convertFrom(groupProviders));
+        }
+
+        public final void setItemsAsGroupProviders(@NonNull List<GroupProvider<G, CH>> groupProviders) {
             setItems(convertFrom(groupProviders));
         }
 
@@ -536,6 +549,13 @@ public Resources getResources() {
             return getContext().getResources();
         }
 
+        public void notifyChildChanged(CH child) {
+            int visiblePosition = items.getVisiblePosition(child);
+            if (visiblePosition != FlatGroupingList.POSITION_NOT_FOUND) {
+                tryNotifyItemChanged(visiblePosition);
+            }
+        }
+
         public abstract class GroupViewHolder extends BaseViewHolder<G> implements OnAnimationEndListener {
 
             private final int expandedResLevel;
diff --git a/omegarecyclerviewlibs/src/main/java/com/omega_r/libs/omegarecyclerview/expandable_recycler_view/animation/ExpandableItemAnimator.java b/omegarecyclerviewlibs/src/main/java/com/omega_r/libs/omegarecyclerview/expandable_recycler_view/animation/ExpandableItemAnimator.java
index 7c5ec5a..94fadb3 100644
--- a/omegarecyclerviewlibs/src/main/java/com/omega_r/libs/omegarecyclerview/expandable_recycler_view/animation/ExpandableItemAnimator.java
+++ b/omegarecyclerviewlibs/src/main/java/com/omega_r/libs/omegarecyclerview/expandable_recycler_view/animation/ExpandableItemAnimator.java
@@ -2,12 +2,14 @@
 
 import android.animation.Animator;
 import android.animation.AnimatorListenerAdapter;
+
 import androidx.annotation.NonNull;
 import androidx.annotation.Nullable;
 import androidx.core.view.ViewCompat;
 import androidx.recyclerview.widget.RecyclerView;
 import androidx.recyclerview.widget.RecyclerView.ViewHolder;
 import androidx.recyclerview.widget.SimpleItemAnimator;
+
 import android.view.View;
 import android.view.ViewPropertyAnimator;
 
@@ -75,10 +77,18 @@ public void runPendingAnimations() {
         if (additionsPending) runAddActions(removalsPending, movesPending, changesPending);
 
         View someView = null;
-        if (removalsPending) someView = mPendingChanges.removals.get(0).itemView;
-        if (someView == null && movesPending) someView = mPendingChanges.moves.get(0).holder.itemView;
-        if (someView == null && changesPending) someView = mPendingChanges.changes.get(0).oldHolder.itemView;
-        if (someView == null && additionsPending) someView = mPendingChanges.additions.get(0).itemView;
+        if (removalsPending) {
+            someView = mPendingChanges.removals.get(0).itemView;
+        }
+        if (someView == null && movesPending) {
+            someView = mPendingChanges.moves.get(0).holder.itemView;
+        }
+        if (someView == null && changesPending) {
+            someView = mPendingChanges.changes.get(0).oldHolder.itemView;
+        }
+        if (someView == null && additionsPending) {
+            someView = mPendingChanges.additions.get(0).itemView;
+        }
         if (someView != null) {
             ViewCompat.postOnAnimationDelayed(someView, mPendingCleaner, getTotalDelay(removalsPending, movesPending, changesPending));
         }
@@ -501,7 +511,11 @@ private void runChangeAnimation(final AnimationHelper.ChangeInfo changeInfo) {
         ViewHolder holder = changeInfo.oldHolder;
         final View view = holder == null ? null : holder.itemView;
         ViewHolder newHolder = changeInfo.newHolder;
-        final View newView = newHolder != null ? newHolder.itemView : null;
+        final View newView = newHolder != null ?
+                (newHolder instanceof OmegaExpandableRecyclerView.Adapter.ChildViewHolder ?
+                        ((OmegaExpandableRecyclerView.Adapter.ChildViewHolder) newHolder).contentView
+                        : newHolder.itemView)
+                : null;
 
         if (view != null) {
             mChangeAnimations.add(changeInfo.oldHolder);
@@ -525,7 +539,8 @@ public void onAnimationEnd(Animator animator) {
                             mChangeAnimations.remove(changeInfo.oldHolder);
                             dispatchFinishedWhenDone();
                         }
-                    }).start();
+                    })
+                    .start();
         }
 
         if (newView != null) {
diff --git a/omegarecyclerviewlibs/src/main/java/com/omega_r/libs/omegarecyclerview/expandable_recycler_view/layout_manager/ExpandableLayoutManager.java b/omegarecyclerviewlibs/src/main/java/com/omega_r/libs/omegarecyclerview/expandable_recycler_view/layout_manager/ExpandableLayoutManager.java
index 498577f..30914fd 100644
--- a/omegarecyclerviewlibs/src/main/java/com/omega_r/libs/omegarecyclerview/expandable_recycler_view/layout_manager/ExpandableLayoutManager.java
+++ b/omegarecyclerviewlibs/src/main/java/com/omega_r/libs/omegarecyclerview/expandable_recycler_view/layout_manager/ExpandableLayoutManager.java
@@ -55,8 +55,8 @@ public void onDetachedFromWindow(RecyclerView view, RecyclerView.Recycler recycl
     @Override
     public void onLayoutChildren(RecyclerView.Recycler recycler, RecyclerView.State state) {
         super.onLayoutChildren(recycler, state);
-        if (mRecyclerView != null) {
-            if (mRecyclerView.getLayoutStep() == ExpandedRecyclerView.STEP_LAYOUT) mAddedRange.clear();
+        if (mRecyclerView != null && mRecyclerView.getLayoutStep() == ExpandedRecyclerView.STEP_LAYOUT) {
+            mAddedRange.clear();
         }
     }
 
@@ -77,6 +77,7 @@ public void addView(View child) {
                 ((OmegaExpandableRecyclerView.Adapter.ChildViewHolder) holder).contentView.setAlpha(0f);
             }
         }
+
         super.addView(child);
     }
 
diff --git a/omegarecyclerviewlibs/src/main/java/com/omega_r/libs/omegarecyclerview/sticky_decoration/StickyDecoration.java b/omegarecyclerviewlibs/src/main/java/com/omega_r/libs/omegarecyclerview/sticky_decoration/StickyDecoration.java
index d614b8d..83ce4fa 100644
--- a/omegarecyclerviewlibs/src/main/java/com/omega_r/libs/omegarecyclerview/sticky_decoration/StickyDecoration.java
+++ b/omegarecyclerviewlibs/src/main/java/com/omega_r/libs/omegarecyclerview/sticky_decoration/StickyDecoration.java
@@ -49,7 +49,7 @@ private long calculateStickerIdAndDrawIt(Canvas canvas, RecyclerView parent, boo
                     View stickerView = stickyHolder.itemView;
                     int top = getStickerTop(isReverseLayout, childView, stickerView, layoutPos + 1);
 
-                    long previousStickyId = mStickyAdapter.getStickyId(adapterPosition - 1);
+                    long previousStickyId = adapterPosition == 0 ? currentStickerId : mStickyAdapter.getStickyId(adapterPosition - 1);
 
                     if (layoutPos == 0 && top > 0 && adapterPosition > 0
                             && hasSticker(adapterPosition - 1)