Fix small Toolbar icons in debug builds

android/app/src/main/java/com/reactnativenavigation/core/objects/Button.java

@@ -42,8 +42,11 @@ public class Button extends JsonObject implements Serializable {
         return mIconSource != null;
     }
 
-    public Drawable getIcon(Context ctx) {
-       return IconUtils.getIcon(ctx, mIconSource);
+    /**
+     * @param dimensions The requested icon dimensions
+     */
+    public Drawable getIcon(Context ctx, int dimensions) {
+       return IconUtils.getIcon(ctx, mIconSource, dimensions);
     }
 
     public int getItemId() {

android/app/src/main/java/com/reactnativenavigation/utils/IconUtils.java

@@ -1,11 +1,13 @@
 package com.reactnativenavigation.utils;
 
 import android.content.Context;
+import android.content.res.Resources;
 import android.graphics.Bitmap;
 import android.graphics.BitmapFactory;
 import android.graphics.drawable.BitmapDrawable;
 import android.graphics.drawable.Drawable;
 import android.net.Uri;
+import android.util.DisplayMetrics;
 
 import com.reactnativenavigation.BuildConfig;
 
@@ -19,6 +21,15 @@ public class IconUtils {
     private static ResourceDrawableIdHelper sResDrawableIdHelper = new ResourceDrawableIdHelper();
 
     public static Drawable getIcon(Context ctx, String iconSource) {
+        return getIcon(ctx, iconSource, -1);
+    }
+
+    /**
+     * @param iconSource Icon source. In release builds this would be a path in assets, In debug it's
+     *                   a url and the image needs to be decoded from input stream.
+     * @param dimensions The requested icon dimensions
+     */
+    public static Drawable getIcon(Context ctx, String iconSource, int dimensions) {
         if (iconSource == null) {
             return null;
         }
@@ -32,7 +43,9 @@ public class IconUtils {
             } else {
                 URL url = new URL(iconUri.toString());
                 Bitmap bitmap = BitmapFactory.decodeStream(url.openStream());
-                icon = new BitmapDrawable(bitmap);
+                bitmap = dimensions > 0 ?
+                        Bitmap.createScaledBitmap(bitmap, dimensions, dimensions, false) : bitmap;
+                icon = new BitmapDrawable(ctx.getResources(), bitmap);
             }
             return icon;
         } catch (Exception e) {

android/app/src/main/java/com/reactnativenavigation/views/RnnToolBar.java

@@ -169,12 +169,14 @@ public class RnnToolBar extends Toolbar {
         private final List<Button> mNewButtons;
         private final WeakReference<RnnToolBar> mToolbarWR;
         private final Integer mTintColor;
+        private final int mIconDimensions;
 
         public SetupToolbarButtonsTask(RnnToolBar toolBar, Screen oldScreen, Screen newScreen) {
             mToolbarWR = new WeakReference<>(toolBar);
             mOldButtons = oldScreen == null ? null : oldScreen.getButtons();
             mNewButtons = newScreen.getButtons();
             mTintColor = newScreen.buttonsTintColor;
+            mIconDimensions = (int) (toolBar.getHeight() * 0.4f);
         }
 
         @Override
@@ -187,7 +189,7 @@ public class RnnToolBar extends Toolbar {
             Map<String, Drawable> icons = new HashMap<>();
             for (Button button : mNewButtons) {
                 if (button.hasIcon()) {
-                    icons.put(button.id, button.getIcon(context));
+                    icons.put(button.id, button.getIcon(context, mIconDimensions));
                 }
             }
             return icons;
@@ -221,8 +223,7 @@ public class RnnToolBar extends Toolbar {
             }
 
             // Add new screen buttons
-            int i;
-            for (i = 0; i < mNewButtons.size(); i++) {
+            for (int i = 0; i < mNewButtons.size(); i++) {
                 Button button = mNewButtons.get(i);
                 MenuItem item = menu.add(Menu.NONE, button.getItemId(), i, button.title);
                 item.setShowAsAction(MenuItem.SHOW_AS_ACTION_IF_ROOM);