android install_error ai_generated true

INSTALL_FAILED_VERSION_DOWNGRADE：现有版本代码 2 大于新版本代码 1

INSTALL_FAILED_VERSION_DOWNGRADE: Existing version code 2 is greater than new version code 1

ID: android/install-failed-version-downgrade

其他格式: JSON · Markdown 中文 · English
95%修复率
90%置信度
1证据数
2023-01-10首次发现

版本兼容性

版本状态引入弃用备注
Android 12 active — — —
Android 13 active — — —
Android 14 active — — —
Android Studio Giraffe 2022.3.1 active — — —
Android Studio Hedgehog 2023.1.1 active — — —

根因分析

尝试安装版本代码低于当前已安装应用的 APK，Android 出于安全原因阻止此操作。

English

Attempting to install an APK with a lower versionCode than the currently installed app, which Android prevents for security reasons.

generic

官方文档

https://developer.android.com/studio/command-line/adb#install

解决方案

  1. Uninstall the existing app first: `adb uninstall com.example.app`, then install the new APK.
  2. Increment versionCode in build.gradle: `versionCode 3` (ensure it's higher than previous) and rebuild.

无效尝试

常见但无效的做法:

  1. 30% 失败

    Uninstalling the app manually from device settings works but loses all user data; not ideal for debugging.

  2. 90% 失败

    Using `adb install -r -d` flag may force downgrade on some custom ROMs but fails on stock Android with version downgrade check.

  3. 100% 失败

    Modifying versionName only without changing versionCode has no effect because versionCode is the numeric identifier.