diff --git a/.drone.yml b/.drone.yml
index 401aabb..4a8d8bb 100644
--- a/.drone.yml
+++ b/.drone.yml
@@ -63,6 +63,17 @@ steps:
     files:
     - ./coverage/lcov.info
 
+volumes:
+- name: pub-cache
+  temp: {}
+- name: gradle
+  temp: {}
+
+---
+kind: pipeline
+name: publish
+
+steps:
 - name: publish-check
   image: v7lin/flutter:1.5.4-hotfix.2-stable
   volumes:
@@ -70,12 +81,87 @@ steps:
     path: /opt/flutter/.pub-cache
   commands:
   - flutter packages pub publish --dry-run
-  when:
-    event:
-    - tag
+
+- name: restore-cache
+  image: alpine:3.9.3
+  volumes:
+  - name: pub-cache
+    path: /opt/flutter/.pub-cache
+  commands:
+  - FLUTTER_HOME=/opt/flutter/.pub-cache
+  - wget -P $FLUTTER_HOME https://raw.githubusercontent.com/v7lin/pub_credentials/master/credentials.json.enc
+
+- name: restore-cache-openssl
+  image: v7lin/openssl:1.1.1b
+  volumes:
+  - name: pub-cache
+    path: /opt/flutter/.pub-cache
+  environment:
+    ENC_METHOD:
+      from_secret: ENC_METHOD
+    ENC_PASSWORD:
+      from_secret: ENC_PASSWORD
+  commands:
+  - FLUTTER_HOME=/opt/flutter/.pub-cache
+  - openssl enc -d -$ENC_METHOD -k $ENC_PASSWORD -in $FLUTTER_HOME/credentials.json.enc -out $FLUTTER_HOME/credentials.json
+  - rm $FLUTTER_HOME/credentials.json.enc
+
+- name: publish
+  image: v7lin/flutter:1.5.4-hotfix.2-stable
+  volumes:
+  - name: pub-cache
+    path: /opt/flutter/.pub-cache
+  commands:
+  - echo "y" | flutter packages pub publish
+
+- name: save-cache-openssl
+  image: v7lin/openssl:1.1.1b
+  volumes:
+  - name: pub-cache
+    path: /opt/flutter/.pub-cache
+  environment:
+    ENC_METHOD:
+      from_secret: ENC_METHOD
+    ENC_PASSWORD:
+      from_secret: ENC_PASSWORD
+  commands:
+  - FLUTTER_HOME=/opt/flutter/.pub-cache
+  - openssl enc -e -$ENC_METHOD -k $ENC_PASSWORD -in $FLUTTER_HOME/credentials.json -out $FLUTTER_HOME/credentials.json.enc
+  - rm /opt/flutter/.pub-cache/credentials.json
+
+- name: save-cache
+  image: docker:git
+  volumes:
+  - name: pub-cache
+    path: /opt/flutter/.pub-cache
+  environment:
+    GIT_USER_EMAIL:
+      from_secret: GIT_USER_EMAIL
+    GIT_USER_NAME:
+      from_secret: GIT_USER_NAME
+    GIT_USER_PASSWORD:
+      from_secret: GIT_USER_PASSWORD # 密码含'@'，用'%40'替换 -> URLEncoder.encode("@","utf-8");
+  commands:
+  - FLUTTER_HOME=/opt/flutter/.pub-cache
+  - git config --global user.email $GIT_USER_EMAIL
+  - git config --global user.name $GIT_USER_NAME
+  - git config --global credential.helper store
+  - git clone -b master https://$GIT_USER_NAME:$GIT_USER_PASSWORD@github.com/v7lin/pub_credentials.git $FLUTTER_HOME/pub_credentials
+  - rm $FLUTTER_HOME/pub_credentials/credentials.json.enc
+  - mv $FLUTTER_HOME/credentials.json.enc $FLUTTER_HOME/pub_credentials/credentials.json.enc
+  - cd $FLUTTER_HOME/pub_credentials
+  - git commit -am "update credentials by ci/cd tools"
+  - git push
 
 volumes:
 - name: pub-cache
   temp: {}
-- name: gradle
-  temp: {}
+
+trigger:
+  status:
+  - success
+  event:
+  - tag
+
+depends_on:
+- default
diff --git a/CHANGELOG.md b/CHANGELOG.md
index b46b8a5..37c6523 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,3 +1,8 @@
+## [0.2.0] - 2019.5.24
+
+* 优化
+* 自动化发布
+
 ## [0.1.0] - 2019.3.19
 
 * 规范 library 代码
diff --git a/README.md b/README.md
index 49a0175..116a4db 100644
--- a/README.md
+++ b/README.md
@@ -10,7 +10,6 @@ flutter版新浪微博SDK
 
 ## fake 系列 libraries
 
-* [flutter版okhttp3](https://github.com/v7lin/fake_http)
 * [flutter版微信SDK](https://github.com/v7lin/fake_wechat)
 * [flutter版腾讯(QQ)SDK](https://github.com/v7lin/fake_tencent)
 * [flutter版新浪微博SDK](https://github.com/v7lin/fake_weibo)
diff --git a/example/lib/main.dart b/example/lib/main.dart
index 82e98f6..7e2bda7 100644
--- a/example/lib/main.dart
+++ b/example/lib/main.dart
@@ -42,7 +42,11 @@ class _HomeState extends State<Home> {
     WeiboScope.ALL,
   ];
 
-  Weibo _weibo = Weibo();
+  Weibo _weibo = Weibo()
+    ..registerApp(
+      appKey: _WEIBO_APP_KEY,
+      scope: _WEIBO_SCOPE,
+    );
 
   StreamSubscription<WeiboAuthResp> _auth;
   StreamSubscription<WeiboSdkResp> _share;
@@ -52,10 +56,6 @@ class _HomeState extends State<Home> {
   @override
   void initState() {
     super.initState();
-    _weibo.registerApp(
-      appKey: _WEIBO_APP_KEY,
-      scope: _WEIBO_SCOPE,
-    );
     _auth = _weibo.authResp().listen(_listenAuth);
     _share = _weibo.shareMsgResp().listen(_listenShareMsg);
   }
diff --git a/lib/src/weibo.dart b/lib/src/weibo.dart
index 93969ae..c33ae02 100644
--- a/lib/src/weibo.dart
+++ b/lib/src/weibo.dart
@@ -74,10 +74,12 @@ class Weibo {
     }
   }
 
+  /// 登录
   Stream<WeiboAuthResp> authResp() {
     return _authRespStreamController.stream;
   }
 
+  /// 分享
   Stream<WeiboSdkResp> shareMsgResp() {
     return _shareMsgRespStreamController.stream;
   }
@@ -86,6 +88,7 @@ class Weibo {
     return (await _channel.invokeMethod(_METHOD_ISWEIBOINSTALLED)) as bool;
   }
 
+  /// 登录
   Future<void> auth({
     @required String appKey,
     @required List<String> scope,
@@ -103,6 +106,7 @@ class Weibo {
     );
   }
 
+  /// 用户信息
   Future<WeiboUserInfoResp> getUserInfo({
     @required String appkey,
     @required String userId,
@@ -137,7 +141,6 @@ class Weibo {
   ) {
     params.putIfAbsent('source', () => appkey);
     params.putIfAbsent('access_token', () => accessToken);
-
     Uri baseUri = Uri.parse(baseUrl);
     Map<String, List<String>> queryParametersAll =
         Map<String, List<String>>.of(baseUri.queryParametersAll);
@@ -145,10 +148,10 @@ class Weibo {
       queryParametersAll.remove(key);
       queryParametersAll.putIfAbsent(key, () => <String>[value]);
     });
-
     return baseUri.replace(queryParameters: queryParametersAll);
   }
 
+  /// 分享 - 文本
   Future<void> shareText({
     @required String text,
   }) {
@@ -161,6 +164,7 @@ class Weibo {
     );
   }
 
+  /// 分享 - 图片
   Future<void> shareImage({
     @required Uint8List imageData,
   }) {
@@ -173,6 +177,7 @@ class Weibo {
     );
   }
 
+  /// 分享 - 网页
   Future<void> shareWebpage({
     @required String title,
     @required String description,