Made multicolored rows (gray-white) in SearchableView

app/src/main/java/ru/volgorobot/vrcatalog/MainContract.java

@@ -68,6 +68,8 @@ public interface MainContract {
         void setTreeViewChildren(ArrayList<TreeNode> children);
         void onFailureAnswer(int errorCode);
         void swipeLayoutSetRefreshing(boolean state);
+        int incTreeNodeIndex();
+
     }
 
     interface ItemPresenter {

app/src/main/java/ru/volgorobot/vrcatalog/additional/SearchableNodeViewFactory.java

@@ -23,9 +23,9 @@ public class SearchableNodeViewFactory extends BaseNodeViewFactory {
     public BaseNodeViewBinder getNodeViewBinder(View view, int level) {
         switch (level) {
             case 0:
-                return new FirstLevelNodeViewBinder(view);
+                return new FirstLevelNodeViewBinder(view, mView);
             case 1:
-                return new SecondLevelNodeViewBinder(view);
+                return new SecondLevelNodeViewBinder(view, mView);
             case 2:
                 return new ThirdLevelNodeViewBinder(view, context, mView);
             default:

app/src/main/java/ru/volgorobot/vrcatalog/searchNodeViewBinders/FirstLevelNodeViewBinder.java

@@ -1,21 +1,28 @@
 package ru.volgorobot.vrcatalog.searchNodeViewBinders;
 
+import android.graphics.Color;
 import android.view.View;
 import android.widget.ImageView;
+import android.widget.RelativeLayout;
 import android.widget.TextView;
 
 import me.texy.treeview.TreeNode;
 import me.texy.treeview.base.BaseNodeViewBinder;
+import ru.volgorobot.vrcatalog.MainContract;
 import ru.volgorobot.vrcatalog.R;
 
 public class FirstLevelNodeViewBinder extends BaseNodeViewBinder {
     TextView textView;
     ImageView imageView;
+    RelativeLayout layout;
+    MainContract.MainActivityView mView;
 
-    public FirstLevelNodeViewBinder(View itemView) {
+    public FirstLevelNodeViewBinder(View itemView, MainContract.MainActivityView mView) {
         super(itemView);
         textView = (TextView) itemView.findViewById(R.id.node_name_view);
         imageView = (ImageView) itemView.findViewById(R.id.arrow_img);
+        layout = itemView.findViewById(R.id.parent_node_container_1);
+        this.mView = mView;
     }
 
     @Override
@@ -26,6 +33,14 @@ public class FirstLevelNodeViewBinder extends BaseNodeViewBinder {
     @Override
     public void bindView(TreeNode treeNode) {
         textView.setText(treeNode.getValue().toString());
+        imageView.setRotation(treeNode.isExpanded() ? 90 : 0);
+        int index = mView.incTreeNodeIndex();
+        treeNode.setIndex(index);
+        if(index % 2 == 1) {
+            layout.setBackgroundColor(Color.parseColor("#FFFFFF"));
+        } else {
+            layout.setBackgroundColor(Color.parseColor("#BABABA"));
+        }
     }
 
     @Override

app/src/main/java/ru/volgorobot/vrcatalog/searchNodeViewBinders/SecondLevelNodeViewBinder.java

@@ -1,21 +1,28 @@
 package ru.volgorobot.vrcatalog.searchNodeViewBinders;
 
+import android.graphics.Color;
 import android.view.View;
 import android.widget.ImageView;
+import android.widget.RelativeLayout;
 import android.widget.TextView;
 
 import me.texy.treeview.TreeNode;
 import me.texy.treeview.base.BaseNodeViewBinder;
+import ru.volgorobot.vrcatalog.MainContract;
 import ru.volgorobot.vrcatalog.R;
 
 public class SecondLevelNodeViewBinder extends BaseNodeViewBinder {
     TextView textView;
     ImageView imageView;
+    RelativeLayout layout;
+    MainContract.MainActivityView mView;
 
-    public SecondLevelNodeViewBinder(View itemView) {
+    public SecondLevelNodeViewBinder(View itemView, MainContract.MainActivityView mView) {
         super(itemView);
         textView = (TextView) itemView.findViewById(R.id.node_name_view);
         imageView = (ImageView) itemView.findViewById(R.id.arrow_img);
+        layout = itemView.findViewById(R.id.parent_node_container_2);
+        this.mView = mView;
     }
 
     @Override
@@ -26,6 +33,14 @@ public class SecondLevelNodeViewBinder extends BaseNodeViewBinder {
     @Override
     public void bindView(TreeNode treeNode) {
         textView.setText(treeNode.getValue().toString());
+        imageView.setRotation(treeNode.isExpanded() ? 90 : 0);
+        int index = mView.incTreeNodeIndex();
+        treeNode.setIndex(index);
+        if(index % 2 == 1) {
+            layout.setBackgroundColor(Color.parseColor("#FFFFFF"));
+        } else {
+            layout.setBackgroundColor(Color.parseColor("#BABABA"));
+        }
     }
 
     @Override

app/src/main/java/ru/volgorobot/vrcatalog/view/MainActivity.java

@@ -125,6 +125,7 @@ public class MainActivity extends AppCompatActivity
 
     @Override
     public void onRefresh() {
+        treeNodeIndex = 0;
         mConnectionErrorImageView.setVisibility(View.INVISIBLE);
         mErrorTextView.setVisibility(View.INVISIBLE);
         mTreeViewContainer.setVisibility(View.VISIBLE);

app/src/main/java/ru/volgorobot/vrcatalog/view/SearchableActivity.java

@@ -35,6 +35,7 @@ public class SearchableActivity extends AppCompatActivity implements MainContrac
     private ImageView mConnectionErrorImageView;
     private NestedScrollView mTreeViewContainer;
     private TextView mErrorTextView;
+    private int treeNodeIndex;
 
     @Override
     protected void onCreate(Bundle savedInstanceState) {
@@ -150,6 +151,6 @@ public class SearchableActivity extends AppCompatActivity implements MainContrac
 
     @Override
     public int incTreeNodeIndex() {
-        return 0;
+        return treeNodeIndex++;
     }
 }