feat：参照研听的基础工程

packages/android_id/README.md

@@ -0,0 +1,47 @@
+# android_id
+
+[![Flutter Community: android_id](https://fluttercommunity.dev/_github/header/android_id)](https://github.com/fluttercommunity/community)
+
+![Pub Version](https://img.shields.io/pub/v/android_id)
+
+A Flutter plugin for retrieving the Android ID.
+
+## Getting started
+
+* Add plugin to pubspec.yaml
+* Use it in your code (see examples of all methods below)
+
+## Usage
+
+```dart
+const _androidIdPlugin = AndroidId();
+
+final String? androidId = await _androidIdPlugin.getId();
+```
+
+## Important
+
+Please note that on `Android 8` and above, the `Android ID` is not unique per device, but also per signing key the app was built with:
+
+<blockquote>
+On Android 8.0 (API level 26) and higher versions of the platform, a 64-bit number (expressed as a hexadecimal string), <b>unique to each combination of app-signing key, user, and device.</b>
+
+The value may change if a factory reset is performed on the device or if an APK signing key changes.
+</blockquote>
+
+[Android API reference](https://developer.android.com/reference/android/provider/Settings.Secure#ANDROID_ID)
+
+[Stack Overflow explanation](https://stackoverflow.com/a/43393373)
+
+
+## Google Play
+
+Before using this plugin in your app, make sure to follow Google Play guidelines.
+For example [here](https://support.google.com/googleplay/android-developer/answer/6048248#zippy=%2Cpersistent-identifiers-including-android-id):
+
+<blockquote>
+<b>Persistent identifiers, including Android ID</b>
+
+Use for non-advertising purposes<br>
+You can use persistent identifiers as long as you have a [privacy policy](https://support.google.com/googleplay/android-developer/answer/9859455) and handle the data in accordance with the [Developer Distribution Agreement](https://play.google.com/about/developer-distribution-agreement.html#use) and all applicable privacy laws in the areas where you make your app available.
+</blockquote>