fix a different header height issue

README.md

@@ -8,7 +8,7 @@ Usage
 -----
 
 1. Add jcenter() to repositories block in your gradle file.
-2. Add `implementation 'com.shuhart.stickyheader:stickyheader:1.0.2` to your dependencies.
+2. Add `implementation 'com.shuhart.stickyheader:stickyheader:1.0.3` to your dependencies.
 3. Look into the sample for additional details on how to use and configure the library.
 
 You should provide an adapter that extends [StickyAdapter](https://github.com/shuhart/StickyHeader/blob/master/stickyheader/src/main/java/com/shuhart/stickyheader/StickyAdapter.java) to the StickyHeaderItemDecorator that is used to create and bind sticky headers.

build.gradle

@@ -7,7 +7,7 @@ buildscript {
         jcenter()
     }
     dependencies {
-        classpath 'com.android.tools.build:gradle:3.0.1'
+        classpath 'com.android.tools.build:gradle:3.1.0'
 
 
         // NOTE: Do not place your application dependencies here; they belong

gradle/wrapper/gradle-wrapper.properties

@@ -1,6 +1,6 @@
-#Fri Feb 16 16:06:40 ALMT 2018
+#Tue Apr 03 14:19:21 ALMT 2018
 distributionBase=GRADLE_USER_HOME
 distributionPath=wrapper/dists
 zipStoreBase=GRADLE_USER_HOME
 zipStorePath=wrapper/dists
-distributionUrl=https\://services.gradle.org/distributions/gradle-4.1-all.zip
+distributionUrl=https\://services.gradle.org/distributions/gradle-4.4-all.zip

sample/src/main/java/com/shuhart/stickyheader/BigSectionAdapter.java

@@ -0,0 +1,21 @@
+package com.shuhart.stickyheader;
+
+import android.support.v7.widget.RecyclerView;
+import android.view.LayoutInflater;
+import android.view.ViewGroup;
+
+public class BigSectionAdapter extends SectionAdapter {
+    @Override
+    public RecyclerView.ViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
+        LayoutInflater inflater = LayoutInflater.from(parent.getContext());
+        if (viewType == Section.HEADER) {
+            RecyclerView.ViewHolder holder =
+                    new HeaderViewholder(inflater.inflate(R.layout.recycler_view_header_item, parent, false));
+            ViewGroup.LayoutParams lp = holder.itemView.getLayoutParams();
+            lp.height = lp.height * 2;
+            holder.itemView.setLayoutParams(lp);
+            return holder;
+        }
+        return super.onCreateViewHolder(parent, viewType);
+    }
+}

sample/src/main/java/com/shuhart/stickyheader/SmallSectionAdapter.java

@@ -0,0 +1,24 @@
+package com.shuhart.stickyheader;
+
+import android.support.v7.widget.RecyclerView;
+import android.view.LayoutInflater;
+import android.view.ViewGroup;
+
+import java.util.ArrayList;
+import java.util.List;
+
+public class SmallSectionAdapter extends SectionAdapter {
+    @Override
+    public RecyclerView.ViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
+        LayoutInflater inflater = LayoutInflater.from(parent.getContext());
+        if (viewType == Section.HEADER) {
+            RecyclerView.ViewHolder holder =
+                    new HeaderViewholder(inflater.inflate(R.layout.recycler_view_header_item, parent, false));
+            ViewGroup.LayoutParams lp = holder.itemView.getLayoutParams();
+            lp.height = lp.height / 2;
+            holder.itemView.setLayoutParams(lp);
+            return holder;
+        }
+        return super.onCreateViewHolder(parent, viewType);
+    }
+}

stickyheader/build.gradle

@@ -15,7 +15,7 @@ ext {
     siteUrl = 'https://github.com/shuhart/StickyHeader'
     gitUrl = 'https://github.com/shuhart/StickyHeader.git'
 
-    libraryVersion = '1.0.2'
+    libraryVersion = '1.0.3'
 
     developerId = 'shuhart'
     developerName = 'Redrick Shuhart'

stickyheader/src/main/java/com/shuhart/stickyheader/StickyHeaderItemDecorator.java

@@ -66,28 +66,18 @@ public void onDrawOver(Canvas c, RecyclerView parent, RecyclerView.State state)
             return;
         }
 
-        RecyclerView.ViewHolder viewHolder = parent.findViewHolderForAdapterPosition(topChildPosition);
-        if (viewHolder == null || viewHolder.itemView.getLayoutParams().width == 0) {
+        View viewOverlappedByHeader = getChildInContact(parent, currentStickyHolder.itemView.getBottom());
+        if (viewOverlappedByHeader == null) {
             return;
         }
-
-        int contactPoint = viewHolder.itemView.getBottom();
-        View childInContact = getChildInContact(parent, contactPoint);
-        if (childInContact == null) {
-            return;
-        }
-
-        int childPosition = parent.getChildAdapterPosition(childInContact);
-
-        if (adapter.getHeaderPositionForItem(childPosition) == childPosition) {
-            updateStickyHeader(topChildPosition, childPosition);
-            moveHeader(c, childInContact);
-            return;
+        int overlappedByHeaderPosition = parent.getChildAdapterPosition(viewOverlappedByHeader);
+        if (adapter.getHeaderPositionForItem(overlappedByHeaderPosition) == overlappedByHeaderPosition) {
+            updateStickyHeader(topChildPosition, overlappedByHeaderPosition);
+            moveHeader(c, viewOverlappedByHeader);
         } else {
             updateStickyHeader(topChildPosition, RecyclerView.NO_POSITION);
+            drawHeader(c);
         }
-
-        drawHeader(c);
     }
 
     @SuppressWarnings("unchecked")