Remove lint warnings (#344)

flexbox/src/androidTest/java/com/google/android/flexbox/test/FlexboxLayoutManagerConfigChangeTest.java

@@ -74,7 +74,7 @@ public class FlexboxLayoutManagerConfigChangeTest {
             @Override
             public void run() {
                 activity.setContentView(R.layout.recyclerview);
-                RecyclerView recyclerView = (RecyclerView) activity.findViewById(R.id.recyclerview);
+                RecyclerView recyclerView = activity.findViewById(R.id.recyclerview);
                 // This test assumes that the screen width and the height are different.
                 recyclerView.getLayoutParams().height = ViewGroup.LayoutParams.MATCH_PARENT;
                 recyclerView.getLayoutParams().width = ViewGroup.LayoutParams.MATCH_PARENT;
@@ -134,7 +134,7 @@ public class FlexboxLayoutManagerConfigChangeTest {
             @Override
             public void run() {
                 activity.setContentView(R.layout.recyclerview);
-                RecyclerView recyclerView = (RecyclerView) activity.findViewById(R.id.recyclerview);
+                RecyclerView recyclerView = activity.findViewById(R.id.recyclerview);
                 // This test assumes that the screen width and the height are different.
                 recyclerView.getLayoutParams().height = ViewGroup.LayoutParams.MATCH_PARENT;
                 recyclerView.getLayoutParams().width = ViewGroup.LayoutParams.MATCH_PARENT;

flexbox/src/androidTest/java/com/google/android/flexbox/test/NestedInnerAdapter.java

@@ -46,7 +46,8 @@ class NestedInnerAdapter extends RecyclerView.Adapter<NestedInnerAdapter.InnerVi
 
     @Override
     public void onBindViewHolder(InnerViewHolder holder, int position) {
-        holder.mTextView.setText(mInnerPosition + "-" + position);
+        String description = holder.mTextView.getResources().getString(R.string.item_description);
+        holder.mTextView.setText(String.format(description, mInnerPosition, position));
     }
 
     @Override
@@ -61,7 +62,7 @@ class NestedInnerAdapter extends RecyclerView.Adapter<NestedInnerAdapter.InnerVi
         InnerViewHolder(View itemView) {
             super(itemView);
 
-            mTextView = (TextView) itemView.findViewById(R.id.textview);
+            mTextView = itemView.findViewById(R.id.textview);
         }
     }
 }

flexbox/src/androidTest/java/com/google/android/flexbox/test/NestedOuterAdapter.java

@@ -89,7 +89,7 @@ class NestedOuterAdapter extends RecyclerView.Adapter<NestedOuterAdapter.OuterVi
         OuterViewHolder(View itemView) {
             super(itemView);
 
-            mInnerRecyclerView = (RecyclerView) itemView.findViewById(R.id.recyclerview_inner);
+            mInnerRecyclerView = itemView.findViewById(R.id.recyclerview_inner);
         }
     }
 }

flexbox/src/androidTest/java/com/google/android/flexbox/test/TestAdapterMultiViewTypes.java

@@ -83,10 +83,6 @@ class TestAdapterMultiViewTypes extends RecyclerView.Adapter<TestViewHolder> {
         notifyItemInserted(position);
     }
 
-    Item getItemAt(int position) {
-        return mItems.get(position);
-    }
-
     @Override
     public int getItemCount() {
         return mItems.size();

flexbox/src/androidTest/java/com/google/android/flexbox/test/TestViewHolder.java

@@ -30,6 +30,6 @@ class TestViewHolder extends RecyclerView.ViewHolder {
     TestViewHolder(View itemView) {
         super(itemView);
 
-        mTextView = (TextView) itemView.findViewById(R.id.textview);
+        mTextView = itemView.findViewById(R.id.textview);
     }
 }

flexbox/src/androidTest/res/values/strings.xml

+<?xml version="1.0" encoding="utf-8"?><!--
+Copyright 2017 Google Inc. All rights reserved.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+     http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+-->
+<resources>
+    <string name="item_description">%1$s - %2$s</string>
+</resources>