diff --git a/android/res/layout-land/encode.xml b/android/res/layout-land/encode.xml
index fa185dc1d..0719ed679 100755
--- a/android/res/layout-land/encode.xml
+++ b/android/res/layout-land/encode.xml
@@ -15,18 +15,21 @@
  limitations under the License.
  -->
 <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
+              xmlns:tools="http://schemas.android.com/tools"
               android:layout_width="fill_parent"
               android:layout_height="fill_parent"
               android:fillViewport="true"
               android:background="@color/encode_view"
               android:orientation="horizontal"
-              android:gravity="center">
+              android:gravity="center"
+              tools:ignore="Overdraw">
 
   <ImageView android:id="@+id/image_view"
              android:layout_width="wrap_content"
              android:layout_height="fill_parent"
              android:layout_gravity="center_vertical"
-             android:scaleType="center"/>
+             android:scaleType="center"
+             tools:ignore="ContentDescription"/>
 
   <ScrollView android:layout_width="wrap_content"
             android:layout_height="fill_parent"
diff --git a/android/res/layout-land/share.xml b/android/res/layout-land/share.xml
index 5531c8aa0..f49730737 100755
--- a/android/res/layout-land/share.xml
+++ b/android/res/layout-land/share.xml
@@ -15,6 +15,7 @@
  limitations under the License.
  -->
 <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
+              xmlns:tools="http://schemas.android.com/tools"
               android:layout_width="wrap_content"
               android:layout_height="wrap_content"
               android:layout_gravity="center"
@@ -42,7 +43,8 @@
         android:layout_weight="1"
         android:scaleType="center"
         android:src="@drawable/share_via_barcode"
-        android:paddingRight="24dip"/>
+        android:paddingRight="24dip"
+        tools:ignore="ContentDescription"/>
 
     <LinearLayout
         android:layout_width="0dip"
diff --git a/android/res/layout-ldpi/capture.xml b/android/res/layout-ldpi/capture.xml
index d685f38d5..dffd26498 100755
--- a/android/res/layout-ldpi/capture.xml
+++ b/android/res/layout-ldpi/capture.xml
@@ -14,7 +14,8 @@
  See the License for the specific language governing permissions and
  limitations under the License.
  -->
-<merge xmlns:android="http://schemas.android.com/apk/res/android">
+<merge xmlns:android="http://schemas.android.com/apk/res/android"
+       xmlns:tools="http://schemas.android.com/tools">
 
   <SurfaceView android:id="@+id/preview_view"
                android:layout_width="fill_parent"
@@ -54,7 +55,8 @@
                    android:maxHeight="150dip"
                    android:layout_marginBottom="@dimen/half_padding"
                    android:adjustViewBounds="true"
-                   android:scaleType="centerInside"/>
+                   android:scaleType="centerInside"
+                   tools:ignore="ContentDescription"/>
 
         <LinearLayout
           android:orientation="horizontal"
diff --git a/android/res/layout/app_picker_list_item.xml b/android/res/layout/app_picker_list_item.xml
index efcc33f7b..37e7abcbb 100644
--- a/android/res/layout/app_picker_list_item.xml
+++ b/android/res/layout/app_picker_list_item.xml
@@ -15,6 +15,7 @@
  limitations under the License.
  -->
 <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
+              xmlns:tools="http://schemas.android.com/tools"
               android:orientation="horizontal"
               android:layout_width="fill_parent"
               android:layout_height="wrap_content">
@@ -23,7 +24,8 @@
              android:layout_width="64dip"
              android:layout_height="64dip"
              android:scaleType="centerInside"
-             android:padding="@dimen/half_padding"/>
+             android:padding="@dimen/half_padding"
+             tools:ignore="ContentDescription"/>
   
   <TextView android:id="@+id/app_picker_list_item_label" 
             android:layout_width="wrap_content"
diff --git a/android/res/layout/capture.xml b/android/res/layout/capture.xml
index cdd1904cd..fa3c603e7 100755
--- a/android/res/layout/capture.xml
+++ b/android/res/layout/capture.xml
@@ -14,7 +14,8 @@
  See the License for the specific language governing permissions and
  limitations under the License.
  -->
-<merge xmlns:android="http://schemas.android.com/apk/res/android">
+<merge xmlns:android="http://schemas.android.com/apk/res/android"
+       xmlns:tools="http://schemas.android.com/tools">
 
   <SurfaceView android:id="@+id/preview_view"
                android:layout_width="fill_parent"
@@ -54,7 +55,8 @@
                    android:maxHeight="160dip"
                    android:layout_marginBottom="@dimen/half_padding"
                    android:adjustViewBounds="true"
-                   android:scaleType="centerInside"/>
+                   android:scaleType="centerInside"
+                   tools:ignore="ContentDescription"/>
 
         <LinearLayout
           android:orientation="horizontal"
diff --git a/android/res/layout/encode.xml b/android/res/layout/encode.xml
index 8a876eb7b..2a9a0c8ae 100755
--- a/android/res/layout/encode.xml
+++ b/android/res/layout/encode.xml
@@ -16,18 +16,21 @@
  -->
 
 <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
+              xmlns:tools="http://schemas.android.com/tools"
               android:layout_width="fill_parent"
               android:layout_height="fill_parent"
               android:fillViewport="true"
               android:background="@color/encode_view"
               android:orientation="vertical"
-              android:gravity="center">
+              android:gravity="center"
+              tools:ignore="Overdraw">
 
   <ImageView android:id="@+id/image_view"
              android:layout_width="fill_parent"
              android:layout_height="wrap_content"
              android:layout_gravity="center_horizontal"
-             android:scaleType="center"/>
+             android:scaleType="center"
+             tools:ignore="ContentDescription"/>
 
   <ScrollView android:layout_width="fill_parent"
               android:layout_height="wrap_content"
diff --git a/android/res/layout/search_book_contents.xml b/android/res/layout/search_book_contents.xml
index 29124372f..3ecedcc6f 100644
--- a/android/res/layout/search_book_contents.xml
+++ b/android/res/layout/search_book_contents.xml
@@ -15,6 +15,7 @@
  limitations under the License.
  -->
 <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
+              xmlns:tools="http://schemas.android.com/tools"
               android:orientation="vertical"
               android:layout_width="fill_parent"
               android:layout_height="fill_parent">
@@ -32,7 +33,8 @@
               android:layout_weight="1"
               android:singleLine="true"
               android:selectAllOnFocus="true"
-              android:inputType="text"/>
+              android:inputType="text"
+              tools:ignore="NestedWeights"/>
 
     <Button android:id="@+id/query_button"
             style="@android:style/Widget.Holo.Button.Borderless.Small"
diff --git a/android/res/layout/share.xml b/android/res/layout/share.xml
index 39ecdc4eb..1fc212701 100755
--- a/android/res/layout/share.xml
+++ b/android/res/layout/share.xml
@@ -17,6 +17,7 @@
 
 <!-- ScrollView wrapper is to accommodate small screens. -->
 <ScrollView xmlns:android="http://schemas.android.com/apk/res/android"
+            xmlns:tools="http://schemas.android.com/tools"
             android:layout_width="wrap_content"
             android:layout_height="wrap_content"
             android:layout_gravity="center"
@@ -43,7 +44,8 @@
         android:layout_height="wrap_content"
         android:scaleType="center"
         android:src="@drawable/share_via_barcode"
-        android:paddingBottom="@dimen/standard_padding"/>
+        android:paddingBottom="@dimen/standard_padding"
+        tools:ignore="ContentDescription"/>
 
     <LinearLayout
         android:layout_width="fill_parent"
diff --git a/android/src/com/google/zxing/client/android/ViewfinderView.java b/android/src/com/google/zxing/client/android/ViewfinderView.java
index 338a4b071..c577f1a07 100755
--- a/android/src/com/google/zxing/client/android/ViewfinderView.java
+++ b/android/src/com/google/zxing/client/android/ViewfinderView.java
@@ -19,6 +19,7 @@ package com.google.zxing.client.android;
 import com.google.zxing.ResultPoint;
 import com.google.zxing.client.android.camera.CameraManager;
 
+import android.annotation.SuppressLint;
 import android.content.Context;
 import android.content.res.Resources;
 import android.graphics.Bitmap;
@@ -76,6 +77,7 @@ public final class ViewfinderView extends View {
     this.cameraManager = cameraManager;
   }
 
+  @SuppressLint("DrawAllocation")
   @Override
   public void onDraw(Canvas canvas) {
     if (cameraManager == null) {