In order to complete the F-Droid distribution ecosystem, we are introducing F-Droid Update Channels. It is a suite of libraries for apps to find updates, no matter from where it was originally downloaded. In many parts of the world, it is very common to get Android APKs outside of the app stores where the developers upload them.
- third party app stores scrape other app stores for APKs
- APK 文件可使用蓝牙传输，无线直连传输，或者直接下载，等等
- users share APKs via services like Aptoide
In order to ensure that your app always can find updates, we are introducing two specific libraries:
“Get F-Droid” aka org.fdroid.getfdroid
Checks whether F-Droid is installed. If not, it will help the user to download and install F-Droid in a secure way. F-Droid then provides the update channel for all apps available in F-Droid.
“App Updater” aka org.fdroid.appupdater
Keeps the app current by checking the hard-coded app repository set up by the developer. This is similar to the popular “App Updater” library, but handles everything securely using F-Droid signed metadata. The fdroidserver tools handle the creation and maintenance of the app repository.
与 Google Play 服务条款相兼容
Both of these libraries also check whether Google Play is installed, if so, will disable itself. This allows apps to include this library in APKs that are uploaded to Google Play since it will not violate the Google Play Terms of Service.