diff --git a/.gitignore b/.gitignore
index a6198b4..7d0e4f6 100644
--- a/.gitignore
+++ b/.gitignore
@@ -10,4 +10,6 @@ build/
 
 .env
 
-.vscode/settings.json
\ No newline at end of file
+.vscode/settings.json
+
+pubspec.lock
\ No newline at end of file
diff --git a/example/pubspec.lock b/example/pubspec.lock
deleted file mode 100644
index c97675c..0000000
--- a/example/pubspec.lock
+++ /dev/null
@@ -1,324 +0,0 @@
-# Generated by pub
-# See https://dart.dev/tools/pub/glossary#lockfile
-packages:
-  async:
-    dependency: transitive
-    description:
-      name: async
-      url: "https://pub.flutter-io.cn"
-    source: hosted
-    version: "2.5.0"
-  boolean_selector:
-    dependency: transitive
-    description:
-      name: boolean_selector
-      url: "https://pub.flutter-io.cn"
-    source: hosted
-    version: "2.1.0"
-  characters:
-    dependency: transitive
-    description:
-      name: characters
-      url: "https://pub.flutter-io.cn"
-    source: hosted
-    version: "1.1.0"
-  charcode:
-    dependency: transitive
-    description:
-      name: charcode
-      url: "https://pub.flutter-io.cn"
-    source: hosted
-    version: "1.2.0"
-  clock:
-    dependency: transitive
-    description:
-      name: clock
-      url: "https://pub.flutter-io.cn"
-    source: hosted
-    version: "1.1.0"
-  collection:
-    dependency: transitive
-    description:
-      name: collection
-      url: "https://pub.flutter-io.cn"
-    source: hosted
-    version: "1.15.0"
-  crypto:
-    dependency: transitive
-    description:
-      name: crypto
-      url: "https://pub.flutter-io.cn"
-    source: hosted
-    version: "3.0.0"
-  cupertino_icons:
-    dependency: "direct main"
-    description:
-      name: cupertino_icons
-      url: "https://pub.flutter-io.cn"
-    source: hosted
-    version: "1.0.2"
-  extended_image:
-    dependency: "direct main"
-    description:
-      path: "."
-      ref: nnbd-migrate
-      resolved-ref: "332cc5ea72db3800ffb749e90c53b5b3190b8fa5"
-      url: "https://github.com/fluttercandies/extended_image.git"
-    source: git
-    version: "2.0.0-nullsafety.1"
-  extended_image_library:
-    dependency: transitive
-    description:
-      name: extended_image_library
-      url: "https://pub.flutter-io.cn"
-    source: hosted
-    version: "0.4.0-nullsafety.2"
-  fake_async:
-    dependency: transitive
-    description:
-      name: fake_async
-      url: "https://pub.flutter-io.cn"
-    source: hosted
-    version: "1.2.0"
-  ffi:
-    dependency: transitive
-    description:
-      name: ffi
-      url: "https://pub.flutter-io.cn"
-    source: hosted
-    version: "1.0.0"
-  file:
-    dependency: transitive
-    description:
-      name: file
-      url: "https://pub.flutter-io.cn"
-    source: hosted
-    version: "6.1.0"
-  flutter:
-    dependency: "direct main"
-    description: flutter
-    source: sdk
-    version: "0.0.0"
-  flutter_plugin_android_lifecycle:
-    dependency: transitive
-    description:
-      name: flutter_plugin_android_lifecycle
-      url: "https://pub.flutter-io.cn"
-    source: hosted
-    version: "2.0.0"
-  flutter_test:
-    dependency: "direct dev"
-    description: flutter
-    source: sdk
-    version: "0.0.0"
-  http:
-    dependency: transitive
-    description:
-      name: http
-      url: "https://pub.flutter-io.cn"
-    source: hosted
-    version: "0.13.0"
-  http_client_helper:
-    dependency: transitive
-    description:
-      name: http_client_helper
-      url: "https://pub.flutter-io.cn"
-    source: hosted
-    version: "0.3.2"
-  http_parser:
-    dependency: transitive
-    description:
-      name: http_parser
-      url: "https://pub.flutter-io.cn"
-    source: hosted
-    version: "4.0.0"
-  image_editor:
-    dependency: "direct main"
-    description:
-      path: ".."
-      relative: true
-    source: path
-    version: "1.0.0"
-  image_picker:
-    dependency: "direct main"
-    description:
-      name: image_picker
-      url: "https://pub.flutter-io.cn"
-    source: hosted
-    version: "0.7.0"
-  image_picker_platform_interface:
-    dependency: transitive
-    description:
-      name: image_picker_platform_interface
-      url: "https://pub.flutter-io.cn"
-    source: hosted
-    version: "2.0.0"
-  matcher:
-    dependency: transitive
-    description:
-      name: matcher
-      url: "https://pub.flutter-io.cn"
-    source: hosted
-    version: "0.12.10"
-  meta:
-    dependency: transitive
-    description:
-      name: meta
-      url: "https://pub.flutter-io.cn"
-    source: hosted
-    version: "1.3.0"
-  oktoast:
-    dependency: "direct main"
-    description:
-      name: oktoast
-      url: "https://pub.flutter-io.cn"
-    source: hosted
-    version: "3.0.0"
-  path:
-    dependency: transitive
-    description:
-      name: path
-      url: "https://pub.flutter-io.cn"
-    source: hosted
-    version: "1.8.0"
-  path_provider:
-    dependency: "direct main"
-    description:
-      name: path_provider
-      url: "https://pub.flutter-io.cn"
-    source: hosted
-    version: "2.0.0"
-  path_provider_linux:
-    dependency: transitive
-    description:
-      name: path_provider_linux
-      url: "https://pub.flutter-io.cn"
-    source: hosted
-    version: "2.0.0"
-  path_provider_macos:
-    dependency: transitive
-    description:
-      name: path_provider_macos
-      url: "https://pub.flutter-io.cn"
-    source: hosted
-    version: "2.0.0"
-  path_provider_platform_interface:
-    dependency: transitive
-    description:
-      name: path_provider_platform_interface
-      url: "https://pub.flutter-io.cn"
-    source: hosted
-    version: "2.0.0"
-  path_provider_windows:
-    dependency: transitive
-    description:
-      name: path_provider_windows
-      url: "https://pub.flutter-io.cn"
-    source: hosted
-    version: "2.0.0"
-  pedantic:
-    dependency: transitive
-    description:
-      name: pedantic
-      url: "https://pub.flutter-io.cn"
-    source: hosted
-    version: "1.10.0"
-  platform:
-    dependency: transitive
-    description:
-      name: platform
-      url: "https://pub.flutter-io.cn"
-    source: hosted
-    version: "3.0.0"
-  plugin_platform_interface:
-    dependency: transitive
-    description:
-      name: plugin_platform_interface
-      url: "https://pub.flutter-io.cn"
-    source: hosted
-    version: "2.0.0"
-  process:
-    dependency: transitive
-    description:
-      name: process
-      url: "https://pub.flutter-io.cn"
-    source: hosted
-    version: "4.1.0"
-  sky_engine:
-    dependency: transitive
-    description: flutter
-    source: sdk
-    version: "0.0.99"
-  source_span:
-    dependency: transitive
-    description:
-      name: source_span
-      url: "https://pub.flutter-io.cn"
-    source: hosted
-    version: "1.8.0"
-  stack_trace:
-    dependency: transitive
-    description:
-      name: stack_trace
-      url: "https://pub.flutter-io.cn"
-    source: hosted
-    version: "1.10.0"
-  stream_channel:
-    dependency: transitive
-    description:
-      name: stream_channel
-      url: "https://pub.flutter-io.cn"
-    source: hosted
-    version: "2.1.0"
-  string_scanner:
-    dependency: transitive
-    description:
-      name: string_scanner
-      url: "https://pub.flutter-io.cn"
-    source: hosted
-    version: "1.1.0"
-  term_glyph:
-    dependency: transitive
-    description:
-      name: term_glyph
-      url: "https://pub.flutter-io.cn"
-    source: hosted
-    version: "1.2.0"
-  test_api:
-    dependency: transitive
-    description:
-      name: test_api
-      url: "https://pub.flutter-io.cn"
-    source: hosted
-    version: "0.2.19"
-  typed_data:
-    dependency: transitive
-    description:
-      name: typed_data
-      url: "https://pub.flutter-io.cn"
-    source: hosted
-    version: "1.3.0"
-  vector_math:
-    dependency: transitive
-    description:
-      name: vector_math
-      url: "https://pub.flutter-io.cn"
-    source: hosted
-    version: "2.1.0"
-  win32:
-    dependency: transitive
-    description:
-      name: win32
-      url: "https://pub.flutter-io.cn"
-    source: hosted
-    version: "2.0.0"
-  xdg_directories:
-    dependency: transitive
-    description:
-      name: xdg_directories
-      url: "https://pub.flutter-io.cn"
-    source: hosted
-    version: "0.2.0"
-sdks:
-  dart: ">=2.12.0-259.9.beta <3.0.0"
-  flutter: ">=2.0.0"
diff --git a/pubspec.lock b/pubspec.lock
deleted file mode 100644
index 2c48ae8..0000000
--- a/pubspec.lock
+++ /dev/null
@@ -1,147 +0,0 @@
-# Generated by pub
-# See https://dart.dev/tools/pub/glossary#lockfile
-packages:
-  async:
-    dependency: transitive
-    description:
-      name: async
-      url: "https://pub.flutter-io.cn"
-    source: hosted
-    version: "2.5.0"
-  boolean_selector:
-    dependency: transitive
-    description:
-      name: boolean_selector
-      url: "https://pub.flutter-io.cn"
-    source: hosted
-    version: "2.1.0"
-  characters:
-    dependency: transitive
-    description:
-      name: characters
-      url: "https://pub.flutter-io.cn"
-    source: hosted
-    version: "1.1.0"
-  charcode:
-    dependency: transitive
-    description:
-      name: charcode
-      url: "https://pub.flutter-io.cn"
-    source: hosted
-    version: "1.2.0"
-  clock:
-    dependency: transitive
-    description:
-      name: clock
-      url: "https://pub.flutter-io.cn"
-    source: hosted
-    version: "1.1.0"
-  collection:
-    dependency: transitive
-    description:
-      name: collection
-      url: "https://pub.flutter-io.cn"
-    source: hosted
-    version: "1.15.0"
-  fake_async:
-    dependency: transitive
-    description:
-      name: fake_async
-      url: "https://pub.flutter-io.cn"
-    source: hosted
-    version: "1.2.0"
-  flutter:
-    dependency: "direct main"
-    description: flutter
-    source: sdk
-    version: "0.0.0"
-  flutter_test:
-    dependency: "direct dev"
-    description: flutter
-    source: sdk
-    version: "0.0.0"
-  matcher:
-    dependency: transitive
-    description:
-      name: matcher
-      url: "https://pub.flutter-io.cn"
-    source: hosted
-    version: "0.12.10"
-  meta:
-    dependency: transitive
-    description:
-      name: meta
-      url: "https://pub.flutter-io.cn"
-    source: hosted
-    version: "1.3.0"
-  path:
-    dependency: transitive
-    description:
-      name: path
-      url: "https://pub.flutter-io.cn"
-    source: hosted
-    version: "1.8.0"
-  sky_engine:
-    dependency: transitive
-    description: flutter
-    source: sdk
-    version: "0.0.99"
-  source_span:
-    dependency: transitive
-    description:
-      name: source_span
-      url: "https://pub.flutter-io.cn"
-    source: hosted
-    version: "1.8.0"
-  stack_trace:
-    dependency: transitive
-    description:
-      name: stack_trace
-      url: "https://pub.flutter-io.cn"
-    source: hosted
-    version: "1.10.0"
-  stream_channel:
-    dependency: transitive
-    description:
-      name: stream_channel
-      url: "https://pub.flutter-io.cn"
-    source: hosted
-    version: "2.1.0"
-  string_scanner:
-    dependency: transitive
-    description:
-      name: string_scanner
-      url: "https://pub.flutter-io.cn"
-    source: hosted
-    version: "1.1.0"
-  term_glyph:
-    dependency: transitive
-    description:
-      name: term_glyph
-      url: "https://pub.flutter-io.cn"
-    source: hosted
-    version: "1.2.0"
-  test_api:
-    dependency: transitive
-    description:
-      name: test_api
-      url: "https://pub.flutter-io.cn"
-    source: hosted
-    version: "0.2.19"
-  typed_data:
-    dependency: transitive
-    description:
-      name: typed_data
-      url: "https://pub.flutter-io.cn"
-    source: hosted
-    version: "1.3.0"
-  vector_math:
-    dependency: transitive
-    description:
-      name: vector_math
-      url: "https://pub.flutter-io.cn"
-    source: hosted
-    version: "2.1.0"
-sdks:
-  dart: ">=2.12.0-0.0 <3.0.0"
-  flutter: ">=2.0.0"