我们使用以下代码获取唯一 ID:
String id = Settings.Secure.getString(mContext.getContentResolver(),
Settings.Secure.ANDROID_ID);
在 Android O 更改指南中,我们可以看到以下几点:
Android O 对平台进行了以下与隐私相关的更改。 https://developer.android.com/preview/behavior-changes.html
The platform now handles identifiers differently.
Values of ANDROID_ID are now scoped per-app instead of per-user. The value of ANDROID_ID is unique for each combination of application package name, signature, user, and device. Two apps running on the same device no longer see the same Android ID, and so cannot correlate.
The value of ANDROID_ID does not change on package uninstall or reinstall, as long as the package name and signing key are the same.
The value of ANDROID_ID does not change if the package signing key changes due to an update.
For apps that were installed prior to the OTA, the value of ANDROID_ID remains the same unless uninstalled and then reinstalled.
If you wish to continue using Android ID for device-bound free trial protection, you can do so. Make sure that the package name and signature match.
For a simple, standard system to monetize apps, use Advertising ID. Advertising ID is a unique, user-resettable ID for advertising, provided by Google Play services.
我对上述内容的理解是,现在 Android_ID 将是应用程序绑定而不是设备绑定。但是我对以下几点感到困惑:
对于在 OTA 之前安装的应用程序,ANDROID_ID 的值保持不变,除非卸载然后重新安装。如果您希望继续使用 Android ID 进行设备绑定免费试用保护,您可以这样做。确保包名称和签名匹配。
1)这是什么意思?除非重新安装我的应用程序,否则即使我们发送更新,它也会继续使用旧版 android_id?
2) 如果您希望继续使用 Android ID 进行设备绑定免费试用保护,您可以这样做。确保包名称和签名匹配。:这是什么意思?