Changed access modifiers and made ImageCreator.getInstance synchronized

Author: Devota Aabel

libandroid-navigation-ui/src/main/java/com/mapbox/services/android/navigation/ui/v5/instruction/ExitSignCreator.java

@@ -25,8 +25,8 @@ class ExitSignCreator extends NodeCreator<BannerComponentNode, ExitSignVerifier>
   }
 
   @Override
-  BannerComponentNode setupNode(BannerComponents components, int index, int startIndex, String
-    modifier) {
+  BannerComponentNode setupNode(BannerComponents components, int index, int startIndex,
+                                String modifier) {
     if (components.type().equals(EXIT)) {
       return null;
     } else if (components.type().equals(EXIT_NUMBER)) {

libandroid-navigation-ui/src/main/java/com/mapbox/services/android/navigation/ui/v5/instruction/ImageCreator.java

@@ -61,7 +61,7 @@ private void addShieldInfo(BannerComponents bannerComponents, int index) {
    *
    * @return ImageCoordinator
    */
-  public static ImageCreator getInstance() {
+  public static synchronized ImageCreator getInstance() {
     if (instance == null) {
       instance = new ImageCreator(new ImageVerifier());
     }

libandroid-navigation-ui/src/main/java/com/mapbox/services/android/navigation/ui/v5/instruction/InstructionTarget.java

@@ -29,9 +29,9 @@ public class InstructionTarget implements Target {
     this(textView, instructionSpannable, shields, shield, new TextViewUtils(), instructionLoadedCallback);
   }
 
-  InstructionTarget(TextView textView, Spannable instructionSpannable, List<BannerShield> shields,
-                    BannerShield shield, TextViewUtils textViewUtils,
-                    InstructionLoadedCallback instructionLoadedCallback) {
+  private InstructionTarget(TextView textView, Spannable instructionSpannable, List<BannerShield> shields,
+                            BannerShield shield, TextViewUtils textViewUtils,
+                            InstructionLoadedCallback instructionLoadedCallback) {
     this.textView = textView;
     this.instructionSpannable = instructionSpannable;
     this.shields = shields;

libandroid-navigation-ui/src/main/java/com/mapbox/services/android/navigation/ui/v5/instruction/TextCreator.java

@@ -10,7 +10,7 @@ class TextCreator extends NodeCreator<BannerComponentNode, TextVerifier> {
     this(new TextVerifier());
   }
 
-  TextCreator(TextVerifier textVerifier) {
+  private TextCreator(TextVerifier textVerifier) {
     super(textVerifier);
   }
 

libandroid-navigation-ui/src/main/java/com/mapbox/services/android/navigation/ui/v5/instruction/TextViewUtils.java

@@ -35,12 +35,12 @@ void setImageSpan(TextView textView, View view, int start, int end) {
     setImageSpan(textView, bitmap, start, end);
   }
 
-  void setImageSpan(TextView textView, Bitmap bitmap, int start, int end) {
+  private void setImageSpan(TextView textView, Bitmap bitmap, int start, int end) {
     Drawable drawable = createDrawable(textView, bitmap);
     setImageSpan(textView, drawable, start, end);
   }
 
-  void setImageSpan(TextView textView, Drawable drawable, int start, int end) {
+  private void setImageSpan(TextView textView, Drawable drawable, int start, int end) {
     Spannable instructionSpannable = new SpannableString(textView.getText());
 
     instructionSpannable.setSpan(new ImageSpan(drawable),