Add AppCompat v21 for sample.

robototextview-sample/build.gradle

@@ -6,7 +6,7 @@ android {
 
     defaultConfig {
         applicationId "com.devspark.robototextview.sample"
-        minSdkVersion 3
+        minSdkVersion 7
         targetSdkVersion 21
         versionCode 10
         versionName "2.2.0"
@@ -15,4 +15,5 @@ android {
 
 dependencies {
     compile project(':robototextview')
+    compile 'com.android.support:appcompat-v7:21.0.0'
 }

robototextview-sample/src/main/java/com/devspark/robototextview/sample/MainActivity.java

@@ -16,13 +16,13 @@
 
 package com.devspark.robototextview.sample;
 
-import android.app.Activity;
 import android.os.Bundle;
+import android.support.v7.app.ActionBarActivity;
 
 /**
  * @author Evgeny Shishkin
  */
-public class MainActivity extends Activity {
+public class MainActivity extends ActionBarActivity {
     /**
      * Called when the activity is first created.
      */

robototextview-sample/src/main/res/values/styles.xml

@@ -1,20 +1,8 @@
 <resources>
 
-    <!--
-        Base application theme, dependent on API level. This theme is replaced
-        by AppBaseTheme from res/values-vXX/styles.xml on newer devices.
-    -->
-    <style name="AppBaseTheme" parent="android:Theme.Light">
-        <!--
-            Theme customizations available in newer API levels can go in
-            res/values-vXX/styles.xml, while customizations related to
-            backward-compatibility can go here.
-        -->
-    </style>
-
-    <!-- Application theme. -->
-    <style name="AppTheme" parent="AppBaseTheme">
-        <!-- All customizations that are NOT specific to a particular API-level can go here. -->
+    <!-- Base application theme. -->
+    <style name="AppTheme" parent="Theme.AppCompat.Light.DarkActionBar">
+        <!-- Customize your theme here. -->
     </style>
 
 </resources>