Invert icon image shown in Spinner for API level < 11

MyTracks/src/com/google/android/apps/mytracks/TrackEditActivity.java

@@ -20,10 +20,12 @@ import com.google.android.apps.mytracks.content.MyTracksProviderUtils;
 import com.google.android.apps.mytracks.content.Track;
 import com.google.android.apps.mytracks.fragments.ChooseActivityTypeDialogFragment;
 import com.google.android.apps.mytracks.fragments.ChooseActivityTypeDialogFragment.ChooseActivityTypeCaller;
+import com.google.android.apps.mytracks.util.ApiAdapterFactory;
 import com.google.android.apps.mytracks.util.TrackIconUtils;
 import com.google.android.apps.mytracks.util.TrackNameUtils;
 import com.google.android.maps.mytracks.R;
 
+import android.graphics.Bitmap;
 import android.graphics.BitmapFactory;
 import android.graphics.BitmapFactory.Options;
 import android.os.Bundle;
@@ -131,13 +133,14 @@ public class TrackEditActivity extends AbstractMyTracksActivity
         new StringBuilder[] {new StringBuilder(iconValue)}) {
       @Override
       public View getView(int position, View convertView, android.view.ViewGroup parent) {
-        ImageView imageView;
-        if (convertView != null) {
-          imageView = (ImageView) convertView;
-        } else {
-          imageView = new ImageView(getContext());
+        ImageView imageView =
+            convertView != null ? (ImageView) convertView : new ImageView(getContext());
+        Bitmap source = BitmapFactory.decodeResource(
+            getResources(), TrackIconUtils.getIconDrawable(getItem(position).toString()));
+        if (ApiAdapterFactory.getApiAdapter().isSpinnerBackgroundLight()) {
+          source = TrackIconUtils.invertBitmap(source);
         }
-        imageView.setImageResource(TrackIconUtils.getIconDrawable(getItem(position).toString()));
+        imageView.setImageBitmap(source);
         imageView.setMinimumHeight(height);
         imageView.setMinimumWidth(width);
         imageView.setPadding(padding, padding, padding, padding);

MyTracks/src/com/google/android/apps/mytracks/util/Api11Adapter.java

@@ -124,4 +124,9 @@ public class Api11Adapter extends Api10Adapter {
   public void invalidMenu(Activity activity) {
     activity.invalidateOptionsMenu();
   }
+  
+  @Override
+  public boolean isSpinnerBackgroundLight() {
+    return false;
+  }
 }

MyTracks/src/com/google/android/apps/mytracks/util/Api8Adapter.java

@@ -133,6 +133,11 @@ public class Api8Adapter implements ApiAdapter {
     // Do nothing
   }
 
+  @Override
+  public boolean isSpinnerBackgroundLight() {
+    return true;    
+  }
+  
   @Override
   public boolean handleSearchKey(MenuItem menuItem) {
     // Return false and allow the framework to handle the search key.

MyTracks/src/com/google/android/apps/mytracks/util/ApiAdapter.java

@@ -163,6 +163,13 @@ public interface ApiAdapter {
    */
   public void invalidMenu(Activity activity);
 
+  /**
+   * True if the spinner background is light color.
+   * <p>
+   * Due to changes in API level 11.
+   */
+  public boolean isSpinnerBackgroundLight();
+  
   /**
    * Handles the search key press. Returns true if handled.
    * <p>

MyTracks/src/com/google/android/apps/mytracks/util/TrackIconUtils.java

@@ -19,6 +19,8 @@ package com.google.android.apps.mytracks.util;
 import com.google.android.maps.mytracks.R;
 
 import android.content.Context;
+import android.graphics.Bitmap;
+import android.graphics.Color;
 import android.util.Pair;
 
 import java.util.ArrayList;
@@ -157,6 +159,34 @@ public class TrackIconUtils {
     return "";
   }
 
+  /**
+   * Inverts the colors in a bitmap.
+   *
+   * @param source the source
+   */
+  public static Bitmap invertBitmap(Bitmap source) {
+    Bitmap output = Bitmap.createBitmap(source.getWidth(), source.getHeight(), source.getConfig());
+    int height = source.getHeight();
+    int width = source.getWidth();
+    int pixelColor;
+    int alpha;
+    int red;
+    int green;
+    int blue;
+
+    for (int y = 0; y < height; y++) {
+      for (int x = 0; x < width; x++) {
+        pixelColor = source.getPixel(x, y);
+        alpha = Color.alpha(pixelColor);
+        red = 255 - Color.red(pixelColor);
+        green = 255 - Color.green(pixelColor);
+        blue = 255 - Color.blue(pixelColor);
+        output.setPixel(x, y, Color.argb(alpha, red, green, blue));
+      }
+    }
+    return output;
+  }
+
   /**
    * Returns true if the activity type is in the list.
    *