Feature/list view

.gitignore

@@ -6,3 +6,4 @@
 .DS_Store
 /build
 /captures
+.idea

app/src/main/java/za/co/retrorabbit/snaprecycler/MainActivity.java

@@ -9,6 +9,8 @@
 import android.view.Menu;
 import android.view.MenuItem;
 import android.view.View;
+import android.widget.ListAdapter;
+import android.widget.ListView;
 
 import java.util.ArrayList;
 import java.util.List;
@@ -19,6 +21,8 @@ public class MainActivity extends AppCompatActivity {
 
     RecyclerView recyclerView;
     private RecyclerView.Adapter adapter;
+    private ListView listview;
+    private ListAdapter adapterList;
 
     @Override
     protected void onCreate(Bundle savedInstanceState) {
@@ -30,10 +34,17 @@ protected void onCreate(Bundle savedInstanceState) {
         recyclerView = (RecyclerView) findViewById(R.id.recyclerView);
         if (recyclerView != null) {
             recyclerView.setHasFixedSize(true);
-            recyclerView.setAdapter(getAdapter());
+            recyclerView.setAdapter(getAdapterRecycler());
             recyclerView.getAdapter().notifyDataSetChanged();
             SnapListUtil.addSnapLayoutManager(recyclerView, SnapListUtil.LayoutManagerType.LINEAR, RecyclerView.VERTICAL, false);
         }
+
+        listview = (ListView) findViewById(R.id.listview);
+        if (listview != null) {
+            listview.setAdapter(getAdapterList());
+            SnapListUtil.addSnapLayoutManager(listview, SnapListUtil.LayoutManagerType.LINEAR, RecyclerView.VERTICAL, false);
+        }
+
         FloatingActionButton fab = (FloatingActionButton) findViewById(R.id.fab);
         if (fab != null)
             fab.setOnClickListener(new View.OnClickListener() {
@@ -67,7 +78,7 @@ public boolean onOptionsItemSelected(MenuItem item) {
         return super.onOptionsItemSelected(item);
     }
 
-    public ThingRecyclerAdapter getAdapter() {
+    public ThingRecyclerAdapter getAdapterRecycler() {
         return new ThingRecyclerAdapter(getThings());
     }
 
@@ -78,4 +89,8 @@ public static List<Thing> getThings() {
         }
         return list;
     }
+
+    public ListAdapter getAdapterList() {
+        return new ThingListAdapter(this,R.layout.list_item,getThings());
+    }
 }

app/src/main/java/za/co/retrorabbit/snaprecycler/ThingListAdapter.java

@@ -0,0 +1,71 @@
+package za.co.retrorabbit.snaprecycler;
+
+import android.content.Context;
+import android.view.LayoutInflater;
+import android.view.View;
+import android.view.ViewGroup;
+import android.widget.ArrayAdapter;
+import android.widget.ImageView;
+import android.widget.TextView;
+
+import java.util.HashMap;
+import java.util.List;
+
+/**
+ * Created by wsche on 2016/06/03.
+ */
+public class ThingListAdapter extends ArrayAdapter<Thing> {
+    HashMap<Thing, Integer> mIdMap = new HashMap<Thing, Integer>();
+
+    public ThingListAdapter(Context context, int textViewResourceId,
+                            List<Thing> objects) {
+        super(context, textViewResourceId, objects);
+        for (int i = 0; i < objects.size(); ++i) {
+            mIdMap.put(objects.get(i), i);
+        }
+    }
+
+    @Override
+    public View getView(int position, View convertView, ViewGroup parent) {
+        ThingViewHolder holder;
+        if (convertView == null) {
+            holder = new ThingViewHolder(LayoutInflater.from(parent.getContext()).inflate(R.layout.list_item, null, false));
+            convertView = holder.itemView;
+            convertView.setTag(holder);
+        } else {
+            holder = (ThingViewHolder) convertView.getTag();
+            convertView = holder.itemView;
+        }
+        holder.populate(getItem(position));
+        return convertView;
+    }
+
+    @Override
+    public long getItemId(int position) {
+        Thing item = getItem(position);
+        return mIdMap.get(item);
+    }
+
+    @Override
+    public boolean hasStableIds() {
+        return true;
+    }
+
+    public class ThingViewHolder {
+
+        ImageView imageView;
+        TextView titleTextView;
+        public View itemView;
+
+        public ThingViewHolder(View itemView) {
+            this.itemView = itemView;
+            imageView = (ImageView) itemView.findViewById(R.id.imageview);
+            titleTextView = (TextView) itemView.findViewById(R.id.textview);
+        }
+
+        public void populate(Thing item) {
+            imageView.setImageResource(item.imageResource);
+            titleTextView.setText(item.text);
+        }
+    }
+}

app/src/main/res/layout/content_main.xml

@@ -4,14 +4,22 @@
     xmlns:tools="http://schemas.android.com/tools"
     android:layout_width="match_parent"
     android:layout_height="match_parent"
+    android:background="@color/colorAccent"
     app:layout_behavior="@string/appbar_scrolling_view_behavior"
     tools:context="za.co.retrorabbit.snaprecycler.MainActivity"
-    android:background="@color/colorAccent"
     tools:showIn="@layout/activity_main">
 
     <android.support.v7.widget.RecyclerView
         android:id="@+id/recyclerView"
         android:layout_width="match_parent"
+        android:visibility="gone"
+        android:layout_height="match_parent"
+        tools:listitem="@layout/list_item" />
+
+    <ListView
+        android:id="@+id/listview"
+        android:layout_below="@+id/recyclerView"
+        android:layout_width="match_parent"
         android:layout_height="match_parent"
         tools:listitem="@layout/list_item" />
 </RelativeLayout>

snaplistutil/build.gradle

@@ -14,7 +14,7 @@ android {
     buildToolsVersion "23.0.3"
 
     defaultConfig {
-        minSdkVersion 7
+        minSdkVersion 8
         targetSdkVersion 23
         versionCode 1
         versionName "0.0.1"

snaplistutil/src/main/java/za/co/retrorabbit/snaplistutil/SnapListUtil.java

@@ -6,6 +6,8 @@
 import android.support.v7.widget.LinearSmoothScroller;
 import android.support.v7.widget.RecyclerView;
 import android.util.DisplayMetrics;
+import android.widget.AbsListView;
+import android.widget.ListView;
 
 /**
  * Created by wsche on 2016/06/03.
@@ -79,6 +81,56 @@ public void onScrolled(RecyclerView recyclerView, int dx, int dy) {
         }
     }
 
+    public static void addSnapLayoutManager(ListView listView, LayoutManagerType layoutManagerType, int orientation, boolean reversed) {
+        switch (layoutManagerType) {
+            case LINEAR:
+                listView.setOnScrollListener(new ListView.OnScrollListener() {
+                    Direction direction = Direction.DOWN;
+                    private int mLastFirstVisibleItem = 0;
+
+                    @Override
+                    public void onScrollStateChanged(AbsListView view, int scrollState) {
+                        switch (scrollState) {
+                            case AbsListView.OnScrollListener.SCROLL_STATE_TOUCH_SCROLL:
+                            case AbsListView.OnScrollListener.SCROLL_STATE_FLING:
+                                // ((SmoothLinearLayoutManager) recyclerView.getLayoutManager()).setMPI(25f);
+                                break;
+                            case AbsListView.OnScrollListener.SCROLL_STATE_IDLE:
+
+                                //layoutManager.setMPI(150f);
+                                //if (layoutManager.findFirstCompletelyVisibleItemPosition() != layoutManager.findFirstVisibleItemPosition()) {
+
+                                switch (direction) {
+                                    case DOWN:
+                                        view.smoothScrollToPosition(view.getLastVisiblePosition());
+                                        break;
+                                    case UP:
+                                        view.smoothScrollToPosition(view.getFirstVisiblePosition());
+                                        break;
+                                }
+                                //}
+                                break;
+                        }
+                    }
+
+                    @Override
+                    public void onScroll(AbsListView view, int firstVisibleItem, int visibleItemCount, int totalItemCount) {
+                        if (mLastFirstVisibleItem < firstVisibleItem) {
+                            // Recycle view scrolling down...
+                            direction = Direction.DOWN;
+                        }
+                        if (mLastFirstVisibleItem > firstVisibleItem) {
+                            // Recycle view scrolling up...
+                            direction = Direction.UP;
+                        }
+                        mLastFirstVisibleItem = firstVisibleItem;
+                    }
+
+                });
+                break;
+        }
+    }
+
     private enum Direction {
         UP,
         DOWN