Improve look of icons and buttons

app/src/main/java/com/testapp/DishViewActivity.java

@@ -151,6 +151,7 @@ public class DishViewActivity extends AppCompatActivity {
                     newReviews.remove(ownedReview);
                     reviews.add(ownedReview);
                 }
+                findViewById(R.id.add_review_button).setVisibility(ownedReview != null? View.INVISIBLE: View.VISIBLE);
 
                 reviews.addAll(newReviews);
                 adapter.notifyDataSetChanged();

app/src/main/res/drawable/favorite_checkbox.xml

+<?xml version="1.0" encoding="utf-8"?>
+<selector xmlns:android="http://schemas.android.com/apk/res/android">
+    <item android:state_checked="false" android:drawable="@drawable/ic_star_border_black_24dp" />
+    <item android:state_checked="true" android:drawable="@drawable/ic_star_black_24dp" />
+    <item android:drawable="@drawable/ic_star_border_black_24dp" />
+</selector>
\ No newline at end of file

app/src/main/res/drawable/ic_add_circle_outline_black_24dp.xml

+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+        android:width="24dp"
+        android:height="24dp"
+        android:viewportWidth="24.0"
+        android:viewportHeight="24.0">
+    <path
+        android:fillColor="#FF000000"
+        android:pathData="M13,7h-2v4L7,11v2h4v4h2v-4h4v-2h-4L13,7zM12,2C6.48,2 2,6.48 2,12s4.48,10 10,10 10,-4.48 10,-10S17.52,2 12,2zM12,20c-4.41,0 -8,-3.59 -8,-8s3.59,-8 8,-8 8,3.59 8,8 -3.59,8 -8,8z"/>
+</vector>

app/src/main/res/drawable/ic_clear_black_24dp.xml

@@ -4,6 +4,6 @@
         android:viewportWidth="24.0"
         android:viewportHeight="24.0">
     <path
-        android:fillColor="#FF000000"
+        android:fillColor="#FFFF0000"
         android:pathData="M19,6.41L17.59,5 12,10.59 6.41,5 5,6.41 10.59,12 5,17.59 6.41,19 12,13.41 17.59,19 19,17.59 13.41,12z"/>
 </vector>

app/src/main/res/drawable/ic_star_black_24dp.xml

+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+        android:width="24dp"
+        android:height="24dp"
+        android:viewportWidth="24.0"
+        android:viewportHeight="24.0">
+    <path
+        android:fillColor="#FFCCCC00"
+        android:pathData="M12,17.27L18.18,21l-1.64,-7.03L22,9.24l-7.19,-0.61L12,2 9.19,8.63 2,9.24l5.46,4.73L5.82,21z"/>
+</vector>

app/src/main/res/drawable/ic_star_border_black_24dp.xml

+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+        android:width="24dp"
+        android:height="24dp"
+        android:viewportWidth="24.0"
+        android:viewportHeight="24.0">
+    <path
+        android:fillColor="#FFCCCC00"
+        android:pathData="M22,9.24l-7.19,-0.62L12,2 9.19,8.63 2,9.24l5.46,4.73L5.82,21 12,17.27 18.18,21l-1.63,-7.03L22,9.24zM12,15.4l-3.76,2.27 1,-4.28 -3.32,-2.88 4.38,-0.38L12,6.1l1.71,4.04 4.38,0.38 -3.32,2.88 1,4.28L12,15.4z"/>
+</vector>

app/src/main/res/layout/content_dish_view.xml

@@ -77,6 +77,7 @@
                             android:layout_width="match_parent"
                             android:layout_height="wrap_content"
                             android:id="@+id/favorite_checkbox"
+                            android:button="@drawable/favorite_checkbox"
                             android:layout_marginBottom="10dp"
                             android:layout_weight="1" />
 
@@ -148,10 +149,12 @@
                         android:layout_weight="1"/>
 
                     <Button
-                        android:layout_width="47dp"
+                        android:layout_width="wrap_content"
                         android:layout_height="wrap_content"
                         android:id="@+id/add_review_button"
-                        android:text="+" />
+                        android:drawableLeft="@drawable/ic_add_circle_outline_black_24dp"
+                        android:text="Add your own review"
+                        style="@style/Widget.AppCompat.Button.Borderless"/>
 
                 </LinearLayout>
 

app/src/main/res/layout/review_row.xml

 <?xml version="1.0" encoding="utf-8"?>
 <RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
     android:layout_width="match_parent" android:layout_height="match_parent"
-    android:padding="@dimen/activity_horizontal_margin">
+    android:paddingBottom="@dimen/activity_horizontal_margin">
 
 
     <TextView
@@ -50,7 +50,6 @@
         android:layout_alignParentRight="true"
         android:layout_alignParentEnd="true"
         android:id="@+id/delete_button"
-        android:backgroundTint="@color/deleteTint"
         android:background="@drawable/ic_clear_black_24dp"
         android:textAllCaps="false"
         android:elevation="0dp"

app/src/main/res/values/colors.xml

@@ -3,5 +3,4 @@
     <color name="colorPrimary">#3f51b5</color>
     <color name="colorPrimaryDark">#303F9F</color>
     <color name="colorAccent">#FF4081</color>
-    <color name="deleteTint">#FF0000</color>
 </resources>