diff --git a/.idea/compiler.xml b/.idea/compiler.xml
deleted file mode 100644
index 96cc43e..0000000
--- a/.idea/compiler.xml
+++ /dev/null
@@ -1,22 +0,0 @@
-<?xml version="1.0" encoding="UTF-8"?>
-<project version="4">
-  <component name="CompilerConfiguration">
-    <resourceExtensions />
-    <wildcardResourcePatterns>
-      <entry name="!?*.java" />
-      <entry name="!?*.form" />
-      <entry name="!?*.class" />
-      <entry name="!?*.groovy" />
-      <entry name="!?*.scala" />
-      <entry name="!?*.flex" />
-      <entry name="!?*.kt" />
-      <entry name="!?*.clj" />
-      <entry name="!?*.aj" />
-    </wildcardResourcePatterns>
-    <annotationProcessing>
-      <profile default="true" name="Default" enabled="false">
-        <processorPath useClasspath="true" />
-      </profile>
-    </annotationProcessing>
-  </component>
-</project>
\ No newline at end of file
diff --git a/.idea/copyright/profiles_settings.xml b/.idea/copyright/profiles_settings.xml
deleted file mode 100644
index e7bedf3..0000000
--- a/.idea/copyright/profiles_settings.xml
+++ /dev/null
@@ -1,3 +0,0 @@
-<component name="CopyrightManager">
-  <settings default="" />
-</component>
\ No newline at end of file
diff --git a/.idea/misc.xml b/.idea/misc.xml
index 586fd4e..99202cc 100644
--- a/.idea/misc.xml
+++ b/.idea/misc.xml
@@ -1,18 +1,16 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <project version="4">
-  <component name="EntryPointsManager">
-    <entry_points version="2.0" />
-  </component>
   <component name="NullableNotNullManager">
     <option name="myDefaultNullable" value="android.support.annotation.Nullable" />
     <option name="myDefaultNotNull" value="android.support.annotation.NonNull" />
     <option name="myNullables">
       <value>
-        <list size="4">
+        <list size="5">
           <item index="0" class="java.lang.String" itemvalue="org.jetbrains.annotations.Nullable" />
           <item index="1" class="java.lang.String" itemvalue="javax.annotation.Nullable" />
-          <item index="2" class="java.lang.String" itemvalue="edu.umd.cs.findbugs.annotations.Nullable" />
-          <item index="3" class="java.lang.String" itemvalue="android.support.annotation.Nullable" />
+          <item index="2" class="java.lang.String" itemvalue="javax.annotation.CheckForNull" />
+          <item index="3" class="java.lang.String" itemvalue="edu.umd.cs.findbugs.annotations.Nullable" />
+          <item index="4" class="java.lang.String" itemvalue="android.support.annotation.Nullable" />
         </list>
       </value>
     </option>
@@ -27,26 +25,10 @@
       </value>
     </option>
   </component>
-  <component name="ProjectRootManager" version="2" languageLevel="JDK_1_7" default="true" project-jdk-name="1.8" project-jdk-type="JavaSDK">
+  <component name="ProjectRootManager" version="2" languageLevel="JDK_1_7" project-jdk-name="1.8" project-jdk-type="JavaSDK">
     <output url="file://$PROJECT_DIR$/build/classes" />
   </component>
   <component name="ProjectType">
     <option name="id" value="Android" />
   </component>
-  <component name="masterDetails">
-    <states>
-      <state key="ProjectJDKs.UI">
-        <settings>
-          <last-edited>1.8</last-edited>
-          <splitter-proportions>
-            <option name="proportions">
-              <list>
-                <option value="0.2" />
-              </list>
-            </option>
-          </splitter-proportions>
-        </settings>
-      </state>
-    </states>
-  </component>
 </project>
\ No newline at end of file
diff --git a/.idea/vcs.xml b/.idea/vcs.xml
index 35eb1dd..94a25f7 100644
--- a/.idea/vcs.xml
+++ b/.idea/vcs.xml
@@ -1,6 +1,6 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <project version="4">
   <component name="VcsDirectoryMappings">
-    <mapping directory="" vcs="Git" />
+    <mapping directory="$PROJECT_DIR$" vcs="Git" />
   </component>
 </project>
\ No newline at end of file
diff --git a/build.gradle b/build.gradle
index de19a70..b924821 100644
--- a/build.gradle
+++ b/build.gradle
@@ -3,9 +3,10 @@
 buildscript {
     repositories {
         jcenter()
+        google()
     }
     dependencies {
-        classpath 'com.android.tools.build:gradle:2.3.3'
+        classpath 'com.android.tools.build:gradle:3.1.4'
         classpath 'com.github.dcendents:android-maven-gradle-plugin:1.5'
 
         // NOTE: Do not place your application dependencies here; they belong
@@ -16,6 +17,7 @@ buildscript {
 allprojects {
     repositories {
         jcenter()
+        google()
     }
 }
 
diff --git a/gradle/wrapper/gradle-wrapper.properties b/gradle/wrapper/gradle-wrapper.properties
index 1540144..f8f2f44 100644
--- a/gradle/wrapper/gradle-wrapper.properties
+++ b/gradle/wrapper/gradle-wrapper.properties
@@ -1,6 +1,6 @@
-#Mon Aug 07 02:27:44 EET 2017
+#Thu Aug 09 14:39:02 KST 2018
 distributionBase=GRADLE_USER_HOME
 distributionPath=wrapper/dists
 zipStoreBase=GRADLE_USER_HOME
 zipStorePath=wrapper/dists
-distributionUrl=https\://services.gradle.org/distributions/gradle-4.1-rc-1-all.zip
+distributionUrl=https\://services.gradle.org/distributions/gradle-4.4-all.zip
diff --git a/library/build.gradle b/library/build.gradle
index e50ed68..1eab793 100644
--- a/library/build.gradle
+++ b/library/build.gradle
@@ -4,12 +4,12 @@ apply plugin: 'com.github.dcendents.android-maven'
 group = 'com.github.ceryle'
 
 android {
-    compileSdkVersion 25
-    buildToolsVersion "25.0.2"
+    compileSdkVersion 27
+    buildToolsVersion "27.0.3"
 
     defaultConfig {
-        minSdkVersion 11
-        targetSdkVersion 25
+        minSdkVersion 14
+        targetSdkVersion 27
         versionCode 1
         versionName "1.0"
     }
@@ -44,7 +44,7 @@ artifacts {
 }
 
 dependencies {
-    compile fileTree(dir: 'libs', include: ['*.jar'])
-    testCompile 'junit:junit:4.12'
-    compile 'com.android.support:appcompat-v7:25.3.1'
+    implementation fileTree(dir: 'libs', include: ['*.jar'])
+    testImplementation 'junit:junit:4.12'
+    implementation 'com.android.support:appcompat-v7:27.1.1'
 }
\ No newline at end of file
diff --git a/library/src/main/java/co/ceryle/segmentedbutton/SegmentedButton.java b/library/src/main/java/co/ceryle/segmentedbutton/SegmentedButton.java
index 2022f2d..c2287e4 100644
--- a/library/src/main/java/co/ceryle/segmentedbutton/SegmentedButton.java
+++ b/library/src/main/java/co/ceryle/segmentedbutton/SegmentedButton.java
@@ -17,26 +17,22 @@
 
 import android.content.Context;
 import android.content.res.TypedArray;
-import android.graphics.Bitmap;
-import android.graphics.BitmapFactory;
 import android.graphics.Canvas;
 import android.graphics.Color;
 import android.graphics.ColorFilter;
-import android.graphics.Matrix;
 import android.graphics.Paint;
 import android.graphics.PorterDuff;
 import android.graphics.PorterDuffColorFilter;
 import android.graphics.Rect;
 import android.graphics.RectF;
 import android.graphics.Typeface;
-import android.graphics.drawable.BitmapDrawable;
 import android.graphics.drawable.Drawable;
 import android.support.v4.content.ContextCompat;
+import android.support.v4.content.res.ResourcesCompat;
 import android.text.Layout;
 import android.text.StaticLayout;
 import android.text.TextPaint;
 import android.util.AttributeSet;
-import android.util.Log;
 import android.view.View;
 
 public class SegmentedButton extends View {
@@ -113,7 +109,9 @@ private void initText() {
         mTextPaint.setTextSize(textSize);
         mTextPaint.setColor(textColor);
 
-        if (hasTextTypefacePath)
+        if (hasTextFont)
+            setTextFont(textFont);
+        else if (hasTextTypefacePath)
             setTypeface(textTypefacePath);
         else if (null != textTypeface) {
             setTypeface(textTypeface);
@@ -418,9 +416,9 @@ public void clipToRight(float clip) {
     }
 
     private int drawableTintOnSelection, textColorOnSelection, textColor, rippleColor, buttonWidth,
-            drawable, drawableTint, drawableWidth, drawableHeight, drawablePadding;
+            drawable, drawableTint, drawableWidth, drawableHeight, drawablePadding, textFont;
     private boolean hasTextColorOnSelection, hasRipple, hasWidth, hasWeight, hasDrawableTintOnSelection,
-            hasDrawableWidth, hasDrawableHeight, hasDrawableTint, hasTextTypefacePath;
+            hasDrawableWidth, hasDrawableHeight, hasDrawableTint, hasTextTypefacePath, hasTextFont;
     private float buttonWeight, textSize;
     private String textTypefacePath, text;
     private Typeface textTypeface;
@@ -441,7 +439,10 @@ private void getAttributes(AttributeSet attrs) {
         hasText = ta.hasValue(R.styleable.SegmentedButton_sb_text);
         textSize = ta.getDimension(R.styleable.SegmentedButton_sb_textSize, ConversionHelper.spToPx(getContext(), 14));
         textColor = ta.getColor(R.styleable.SegmentedButton_sb_textColor, Color.GRAY);
+        textFont = ta.getResourceId(R.styleable.SegmentedButton_sb_textFont, 0);
         textTypefacePath = ta.getString(R.styleable.SegmentedButton_sb_textTypefacePath);
+
+        hasTextFont = ta.hasValue(R.styleable.SegmentedButton_sb_textFont);
         hasTextTypefacePath = ta.hasValue(R.styleable.SegmentedButton_sb_textTypefacePath);
         int typeface = ta.getInt(R.styleable.SegmentedButton_sb_textTypeface, 1);
         switch (typeface) {
@@ -485,7 +486,6 @@ private void getAttributes(AttributeSet attrs) {
 
         drawableGravity = DrawableGravity.getById(ta.getInteger(R.styleable.SegmentedButton_sb_drawableGravity, 0));
 
-
         ta.recycle();
     }
 
@@ -504,6 +504,7 @@ public void setTypeface(Typeface typeface) {
     /**
      * @param location is .ttf file's path in assets folder. Example: 'fonts/my_font.ttf'
      */
+
     public void setTypeface(String location) {
         if (null != location && !location.equals("")) {
             Typeface typeface = Typeface.createFromAsset(getContext().getAssets(), location);
@@ -511,6 +512,17 @@ public void setTypeface(String location) {
         }
     }
 
+    /**
+     * @param font is R reference. Example: 'res/font/my_font.ttf' to R.font.my_font
+     */
+
+    public void setTextFont(int font) {
+        if (0 < font) {
+            Typeface typeface = ResourcesCompat.getFont(context, font);
+            mTextPaint.setTypeface(typeface);
+        }
+    }
+
     /**
      * GRAVITY
      */
diff --git a/library/src/main/res/values/attrs.xml b/library/src/main/res/values/attrs.xml
index 7855076..0811b92 100644
--- a/library/src/main/res/values/attrs.xml
+++ b/library/src/main/res/values/attrs.xml
@@ -29,6 +29,7 @@
             <flag name="serif" value="3"/>
         </attr>
         <attr name="sb_textTypefacePath" format="string"/>
+        <attr name="sb_textFont" format="reference"/>
         <attr name="sb_textFillSpace" format="boolean"/>
         <attr name="sb_textStyle" format="integer">
             <flag name="normal" value="0"/>
diff --git a/sample/build.gradle b/sample/build.gradle
index 3bfec9a..5b52dcf 100644
--- a/sample/build.gradle
+++ b/sample/build.gradle
@@ -1,13 +1,13 @@
 apply plugin: 'com.android.application'
 
 android {
-    compileSdkVersion 25
-    buildToolsVersion "25.0.2"
+    compileSdkVersion 27
+    buildToolsVersion "27.0.3"
 
     defaultConfig {
         applicationId "co.ceryle.segmentedbutton.sample"
-        minSdkVersion 11
-        targetSdkVersion 25
+        minSdkVersion 14
+        targetSdkVersion 27
         versionCode 1
         versionName "1.0"
     }
@@ -20,8 +20,8 @@ android {
 }
 
 dependencies {
-    compile fileTree(dir: 'libs', include: ['*.jar'])
-    testCompile 'junit:junit:4.12'
-    compile 'com.android.support:appcompat-v7:25.3.1'
-    compile project(":library")
+    implementation fileTree(dir: 'libs', include: ['*.jar'])
+    testImplementation 'junit:junit:4.12'
+    implementation 'com.android.support:appcompat-v7:27.1.1'
+    implementation project(":library")
 }
diff --git a/sample/src/main/assets/fonts/aniron.ttf b/sample/src/main/res/font/aniron.ttf
similarity index 100%
rename from sample/src/main/assets/fonts/aniron.ttf
rename to sample/src/main/res/font/aniron.ttf
diff --git a/sample/src/main/res/layout/activity_main.xml b/sample/src/main/res/layout/activity_main.xml
index 07b022b..7744ae6 100644
--- a/sample/src/main/res/layout/activity_main.xml
+++ b/sample/src/main/res/layout/activity_main.xml
@@ -89,7 +89,7 @@
             app:sb_drawableGravity="top"
             app:sb_text="Aragorn"
             app:sb_textColor_onSelection="@color/orange_700"
-            app:sb_textTypefacePath="fonts/aniron.ttf"/>
+            app:sb_textFont="@font/aniron"/>
 
         <co.ceryle.segmentedbutton.SegmentedButton
             android:layout_width="0dp"
@@ -99,7 +99,7 @@
             app:sb_drawableGravity="top"
             app:sb_text="Gimli"
             app:sb_textColor_onSelection="@color/grey_600"
-            app:sb_textTypefacePath="fonts/aniron.ttf"/>
+            app:sb_textFont="@font/aniron"/>
 
         <co.ceryle.segmentedbutton.SegmentedButton
             android:layout_width="0dp"
@@ -109,7 +109,7 @@
             app:sb_drawableGravity="top"
             app:sb_text="Legolas"
             app:sb_textColor_onSelection="@color/yellow_200"
-            app:sb_textTypefacePath="fonts/aniron.ttf"/>
+            app:sb_textFont="@font/aniron"/>
     </co.ceryle.segmentedbutton.SegmentedButtonGroup>
 
     <co.ceryle.segmentedbutton.SegmentedButtonGroup