diff --git a/README.md b/README.md
index 6833f6a..cd66209 100644
--- a/README.md
+++ b/README.md
@@ -10,7 +10,7 @@ RxImagePicker的设计起源，请参考我的[这篇文章](https://www.jianshu
   
 * **[详细文档，包括进阶使用和拓展功能,请点击查看wiki！](https://github.com/qingmei2/RxImagePicker/wiki)**
 * **[常见问题](https://github.com/qingmei2/RxImagePicker/wiki/常见问题)** : 提issue之前查看一下，也许能节省您很多的时间！  
-* **[更新日志](https://github.com/qingmei2/RxImagePicker/wiki/ChangeLog)** : 升级库之前，请查看新版本关于API有可能出现的变动。
+* **[更新日志](https://github.com/qingmei2/RxImagePicker/wiki/ChangeLog)** : 升级库之前，请查看新版本关于API有可能出现的变动,**最新版本v2.1.1**。
 
 <h2 id="overview">简介</h2>
 
@@ -71,15 +71,16 @@ RxImagePicker是一个用于Android的响应式图片选择器，它将您的图
 
 ```groovy
 // 最基础的架构，仅提供了系统默认的图片选择器和拍照功能
-compile 'com.github.qingmei2:rximagepicker:0.4.0'
+compile 'com.github.qingmei2:rximagepicker:2.1.1'
 
 // 提供了自定义UI图片选择器的基本组件，自定义UI的需求需要添加该依赖
-compile 'com.github.qingmei2:rximagepicker_support:0.4.0'
+compile 'com.github.qingmei2:rximagepicker_support:2.1.1'
 
 // 如果需要额外的UI支持，请选择依赖对应的UI拓展库
-compile 'com.github.qingmei2:rximagepicker_support_zhihu:0.4.0'     // 知乎图片选择器
-compile 'com.github.qingmei2:rximagepicker_support_wechat:0.4.0'    // 微信图片选择器
+compile 'com.github.qingmei2:rximagepicker_support_zhihu:2.1.1'     // 知乎图片选择器
+compile 'com.github.qingmei2:rximagepicker_support_wechat:2.1.1'    // 微信图片选择器
 ```
+
 ### 2. 接口配置
 
 声明一个接口，并进行基础的配置：
@@ -144,7 +145,7 @@ private void onButtonClick() {
 * [RxCache:Reactive caching library for Android and Java](https://github.com/VictorAlbertos/RxCache)  
 	优秀的RxJava拓展库，用于处理RxJava的数据缓存，库底层通过Dagger完成对配置的处理，我借鉴在了RxImagePicker中。
 * [Dagger2：A fast dependency injector for Android and Java.](https://github.com/google/dagger)  
-	Google优秀的依赖注入框架，它是构成RxImagePicker的 **基础组件** 。
+	Google优秀的依赖注入框架，0.4.0版本之前，它是构成RxImagePicker的 **基础组件** 。
 * [Matisse:A well-designed local image and video selector for Android](https://github.com/zhihu/Matisse)  
 	知乎开源，优秀的Android图片选择库，拥有非常 **Material Design** 的设计。在RxImagePicker中，Matisse被抽出来放入了RxImagePicker_Support，成为了 **UI层的基础组件** 。
 
diff --git a/config.gradle b/config.gradle
index 474277a..49576c4 100644
--- a/config.gradle
+++ b/config.gradle
@@ -12,8 +12,8 @@ project.ext {
 
             minSdkVersion       : 14,
             targetSdkVersion    : 27,
-            versionCode         : 15,
-            versionName         : "2.0.0"
+            versionCode         : 17,
+            versionName         : "2.1.1"
     ]
 
     dependencies = [
diff --git a/rximagepicker_support/src/main/java/com/qingmei2/rximagepicker_extension/ui/adapter/AlbumMediaAdapter.kt b/rximagepicker_support/src/main/java/com/qingmei2/rximagepicker_extension/ui/adapter/AlbumMediaAdapter.kt
index da88605..5aca46e 100644
--- a/rximagepicker_support/src/main/java/com/qingmei2/rximagepicker_extension/ui/adapter/AlbumMediaAdapter.kt
+++ b/rximagepicker_support/src/main/java/com/qingmei2/rximagepicker_extension/ui/adapter/AlbumMediaAdapter.kt
@@ -49,9 +49,7 @@ open class AlbumMediaAdapter(context: Context,
     private var mOnMediaClickListener: OnMediaClickListener? = null
     private var mImageResize: Int = 0
 
-    open val itemLayoutRes: Int
-        @LayoutRes
-        get() = R.layout.media_grid_item
+    open val itemLayoutRes: Int = R.layout.media_grid_item
 
     init {
         mSelectionSpec = SelectionSpec.instance
diff --git a/rximagepicker_support/src/main/java/com/qingmei2/rximagepicker_extension/ui/widget/CheckView.kt b/rximagepicker_support/src/main/java/com/qingmei2/rximagepicker_extension/ui/widget/CheckView.kt
index 99f177c..f1fc542 100644
--- a/rximagepicker_support/src/main/java/com/qingmei2/rximagepicker_extension/ui/widget/CheckView.kt
+++ b/rximagepicker_support/src/main/java/com/qingmei2/rximagepicker_extension/ui/widget/CheckView.kt
@@ -46,7 +46,6 @@ open class CheckView : View {
     protected var mDensity: Float = 0.toFloat()
     protected var mCheckRect: Rect? = null
     protected var mEnabled = true
-
     // rect for drawing checked number or mark
     private val checkRect: Rect
         get() {
@@ -216,12 +215,11 @@ open class CheckView : View {
     companion object {
 
         const val UNCHECKED = Integer.MIN_VALUE
-        protected const val STROKE_WIDTH = 3.0f // dp
-        protected const val SHADOW_WIDTH = 6.0f // dp
-        @JvmStatic
-        protected val SIZE = 48 // dp
-        protected val STROKE_RADIUS = 11.5f // dp
-        protected const val BG_RADIUS = 11.0f // dp
-        protected const val CONTENT_SIZE = 16 // dp
+        const val SIZE = 48 // dp
+        const val STROKE_RADIUS = 11.5f // dp
+        const val STROKE_WIDTH = 3.0f // dp
+        const val SHADOW_WIDTH = 6.0f // dp
+        const val BG_RADIUS = 11.0f // dp
+        const val CONTENT_SIZE = 16 // dp
     }
 }
diff --git a/rximagepicker_support/src/main/java/com/qingmei2/rximagepicker_extension/ui/widget/MediaGrid.kt b/rximagepicker_support/src/main/java/com/qingmei2/rximagepicker_extension/ui/widget/MediaGrid.kt
index 24e37e2..bd1ea5e 100644
--- a/rximagepicker_support/src/main/java/com/qingmei2/rximagepicker_extension/ui/widget/MediaGrid.kt
+++ b/rximagepicker_support/src/main/java/com/qingmei2/rximagepicker_extension/ui/widget/MediaGrid.kt
@@ -48,8 +48,12 @@ open class MediaGrid : SquareFrameLayout, View.OnClickListener {
         init(context)
     }
 
-    protected open fun init(context: Context) {
-        LayoutInflater.from(context).inflate(R.layout.media_grid_content, this, true)
+    open fun getLayoutRes(): Int {
+        return R.layout.media_grid_content
+    }
+
+    fun init(context: Context) {
+        LayoutInflater.from(context).inflate(getLayoutRes(), this, true)
 
         mThumbnail = findViewById(R.id.media_thumbnail)
         mCheckView = findViewById(R.id.check_view)
diff --git a/rximagepicker_support_wechat/build.gradle b/rximagepicker_support_wechat/build.gradle
index 2cda9bc..65daaef 100644
--- a/rximagepicker_support_wechat/build.gradle
+++ b/rximagepicker_support_wechat/build.gradle
@@ -28,6 +28,7 @@ android {
         }
     }
 }
+
 dependencies {
     implementation project(':rximagepicker')
     implementation project(':rximagepicker_support')
diff --git a/rximagepicker_support_wechat/src/main/java/com/qingmei2/rximagepicker_extension_wechat/ui/widget/WechatCheckView.kt b/rximagepicker_support_wechat/src/main/java/com/qingmei2/rximagepicker_extension_wechat/ui/widget/WechatCheckView.kt
index 1241dad..e32b37d 100644
--- a/rximagepicker_support_wechat/src/main/java/com/qingmei2/rximagepicker_extension_wechat/ui/widget/WechatCheckView.kt
+++ b/rximagepicker_support_wechat/src/main/java/com/qingmei2/rximagepicker_extension_wechat/ui/widget/WechatCheckView.kt
@@ -11,7 +11,7 @@ import android.util.AttributeSet
 
 import com.qingmei2.rximagepicker_extension.ui.widget.CheckView
 
-class WechatCheckView : CheckView {
+open class WechatCheckView : CheckView {
 
     private var rect: RectF? = null
     private var drawableRect: Rect? = null
@@ -27,8 +27,8 @@ class WechatCheckView : CheckView {
         mStrokePaint.strokeWidth = WECHAT_STROKE_WIDTH * mDensity
 
         // draw white stroke
-        val dx = mDensity * CheckView.SIZE / 4
-        val dy = mDensity * CheckView.SIZE / 4
+        val dx = mDensity * SIZE / 4
+        val dy = mDensity * SIZE / 4
         rect = RectF(2 * dx - PROOFREAD_SIZE, dy - PROOFREAD_SIZE,
                 3 * dx + PROOFREAD_SIZE, 2 * dy + PROOFREAD_SIZE)
         drawableRect = Rect(rect!!.left.toInt(), rect!!.top.toInt(), rect!!.right.toInt(), rect!!.bottom.toInt())
@@ -89,6 +89,7 @@ class WechatCheckView : CheckView {
 
         private const val WECHAT_STROKE_WIDTH = 1.5f // dp
         private const val WECHAT_STROKE_CONNER = 5f // dp
+        private const val SIZE = 48 // dp
 
         private const val PROOFREAD_SIZE = 8
     }
diff --git a/rximagepicker_support_wechat/src/main/java/com/qingmei2/rximagepicker_extension_wechat/ui/widget/WechatMediaGrid.kt b/rximagepicker_support_wechat/src/main/java/com/qingmei2/rximagepicker_extension_wechat/ui/widget/WechatMediaGrid.kt
index 5db4d7c..f2e5389 100644
--- a/rximagepicker_support_wechat/src/main/java/com/qingmei2/rximagepicker_extension_wechat/ui/widget/WechatMediaGrid.kt
+++ b/rximagepicker_support_wechat/src/main/java/com/qingmei2/rximagepicker_extension_wechat/ui/widget/WechatMediaGrid.kt
@@ -13,15 +13,7 @@ class WechatMediaGrid : MediaGrid {
 
     constructor(context: Context, attrs: AttributeSet) : super(context, attrs)
 
-    override fun init(context: Context) {
-        LayoutInflater.from(context).inflate(R.layout.wechat_media_grid_content, this, true)
-
-        mThumbnail = findViewById(R.id.media_thumbnail)
-        mCheckView = findViewById(R.id.check_view)
-        mGifTag = findViewById(R.id.gif)
-        mVideoDuration = findViewById(R.id.video_duration)
-
-        mThumbnail.setOnClickListener(this)
-        mCheckView.setOnClickListener(this)
+    override fun getLayoutRes(): Int {
+        return R.layout.wechat_media_grid_content
     }
 }
diff --git a/sample/build.gradle b/sample/build.gradle
index 0913e9f..fb12053 100644
--- a/sample/build.gradle
+++ b/sample/build.gradle
@@ -30,15 +30,15 @@ dependencies {
     implementation rootProject.ext.dependencies["design"]
     implementation rootProject.ext.dependencies["glide"]
     annotationProcessor rootProject.ext.dependencies["glide-compiler"]
-    implementation project(':rximagepicker')
-    implementation project(':rximagepicker_support')
-    implementation project(':rximagepicker_support_wechat')
-    implementation project(':rximagepicker_support_zhihu')
+//    implementation project(':rximagepicker')
+//    implementation project(':rximagepicker_support')
+//    implementation project(':rximagepicker_support_wechat')
+//    implementation project(':rximagepicker_support_zhihu')
 
-//    implementation 'com.github.qingmei2:rximagepicker:2.0.0'
-//    implementation 'com.github.qingmei2:rximagepicker_support:2.0.0'
-//    implementation 'com.github.qingmei2:rximagepicker_support_zhihu:2.0.0'
-//    implementation 'com.github.qingmei2:rximagepicker_support_wechat:2.0.0'
+    implementation "com.github.qingmei2:rximagepicker:2.1.1"
+    implementation "com.github.qingmei2:rximagepicker_support:2.1.1"
+    implementation "com.github.qingmei2:rximagepicker_support_zhihu:2.1.1"
+    implementation "com.github.qingmei2:rximagepicker_support_wechat:2.1.1"
 
     testImplementation rootProject.ext.dependencies["junit"]
 }