diff --git a/androidtagview/build.gradle b/androidtagview/build.gradle
index a80ff86..cb36870 100644
--- a/androidtagview/build.gradle
+++ b/androidtagview/build.gradle
@@ -1,12 +1,12 @@
 apply plugin: 'com.android.library'
 
 android {
-    compileSdkVersion 23
-    buildToolsVersion "22.0.1"
+    compileSdkVersion 25
+    buildToolsVersion "25.0.0"
 
     defaultConfig {
         minSdkVersion 9
-        targetSdkVersion 23
+        targetSdkVersion 25
         versionCode 105
         versionName "1.0.5"
     }
@@ -21,6 +21,6 @@ android {
 dependencies {
     compile fileTree(dir: 'libs', include: ['*.jar'])
     testCompile 'junit:junit:4.12'
-    compile 'com.android.support:appcompat-v7:23.1.1'
+    compile 'com.android.support:appcompat-v7:25.0.1'
 }
 apply from: 'https://raw.githubusercontent.com/whilu/AndroidPublishLibrary/master/project/library/bintray_publish.gradle'
\ No newline at end of file
diff --git a/androidtagview/src/main/java/co/lujun/androidtagview/TagContainerLayout.java b/androidtagview/src/main/java/co/lujun/androidtagview/TagContainerLayout.java
index 3ce6199..b40c011 100644
--- a/androidtagview/src/main/java/co/lujun/androidtagview/TagContainerLayout.java
+++ b/androidtagview/src/main/java/co/lujun/androidtagview/TagContainerLayout.java
@@ -223,6 +223,10 @@ private void init(Context context, AttributeSet attrs, int defStyleAttr){
         setTagMaxLength(mTagMaxLength);
         setTagHorizontalPadding(mTagHorizontalPadding);
         setTagVerticalPadding(mTagVerticalPadding);
+
+        if (isInEditMode()) {
+            addTag("sample tag");
+        }
     }
 
     @Override
diff --git a/build.gradle b/build.gradle
index 66aa056..45efda8 100644
--- a/build.gradle
+++ b/build.gradle
@@ -5,7 +5,7 @@ buildscript {
         jcenter()
     }
     dependencies {
-        classpath 'com.android.tools.build:gradle:2.2.1'
+        classpath 'com.android.tools.build:gradle:2.2.2'
         classpath 'com.github.dcendents:android-maven-gradle-plugin:1.4.1'
         classpath 'com.jfrog.bintray.gradle:gradle-bintray-plugin:1.0'
 
diff --git a/sample/build.gradle b/sample/build.gradle
index 85106e2..9435b08 100644
--- a/sample/build.gradle
+++ b/sample/build.gradle
@@ -1,13 +1,13 @@
 apply plugin: 'com.android.application'
 
 android {
-    compileSdkVersion 23
-    buildToolsVersion "22.0.1"
+    compileSdkVersion 25
+    buildToolsVersion "25.0.0"
 
     defaultConfig {
         applicationId "co.lujun.sample"
         minSdkVersion 9
-        targetSdkVersion 23
+        targetSdkVersion 25
         versionCode 1
         versionName "1.0"
     }
@@ -23,6 +23,6 @@ dependencies {
     compile fileTree(dir: 'libs', include: ['*.jar'])
     compile project(':androidtagview')
     testCompile 'junit:junit:4.12'
-    compile 'com.android.support:appcompat-v7:23.1.1'
-    compile 'com.android.support:design:23.1.1'
+    compile 'com.android.support:appcompat-v7:25.0.1'
+    compile 'com.android.support:design:25.0.1'
 }