在项目'：app'中找不到任务'installDebug' - 创建项目后运行android答案

【问题标题】：Task 'installDebug' not found in project ':app' - run-android after creating project在项目'：app'中找不到任务'installDebug' - 创建项目后运行android
【发布时间】：2021-11-21 18:01:31
【问题描述】：

创建一个 react native 项目后，我尝试在我的 android 设备上运行它。我在终端中输入adb devices，我看到了我的设备。我跑了react-native run-android。过了一会儿，Task 'installDebug' not found in project ':app' 弹出来了。

Jetifier found 962 file(s) to forward-jetify. Using 4 workers
...info Starting JS server...
'D:\Android\android-sdk\platform-tools' is not recognized as an internal or external command, operable program or batch file.
info Launching emulator...
error Failed to launch emulator. Reason: No emulators found as an output of `emulator -list-avds`.
warn Please launch an emulator manually or connect a device. Otherwise app may fail to launch.
info Installing the app...

Deprecated Gradle features were used in this build, making it incompatible with Gradle 7.0.
Use '--warning-mode all' to show the individual deprecation warnings.
See https://docs.gradle.org/6.0.1/userguide/command_line_interface.html#sec:command_line_warnings

FAILURE: Build failed with an exception.

* What went wrong:
Task 'installDebug' not found in project ':app'.

* Try:
Run gradlew tasks to get a list of available tasks. 
Run with --stacktrace option to get the stack trace. 
Run with --info or --debug option to get more log output. 
Run with --scan to get full insights.

* Get more help at https://help.gradle.org

BUILD FAILED in 15s

error Failed to install the app. Make sure you have the Android development environment set up:
https://reactnative.dev/docs/getting-started.html#android-development-environment. Run CLI with --verbose flag for more details.
Error: Command failed: gradlew.bat app:installDebug -PreactNativeDevServerPort=8
081

FAILURE: Build failed with an exception.

* What went wrong:
Task 'installDebug' not found in project ':app'.

这里是 react-native 信息

info Fetching system and libraries information...
System:
    OS: Windows 7 6.1.7601
    CPU: (4) x64 Intel(R) Core(TM) i3-2100 CPU @ 3.10GHz
    Memory: 881.91 MB / 3.97 GB
  Binaries:
    Node: 10.16.1 - C:\Program Files\nodejs\node.EXE
    Yarn: 1.17.3 - C:\Program Files (x86)\Yarn\bin\yarn.CMD
    npm: 6.9.0 - C:\Program Files\nodejs\npm.CMD
    Watchman: Not Found
  SDKs:
    Android SDK: Not Found
  IDEs:
    Android Studio: Version  3.2.0.0 AI-181.5540.7.32.5014246
  Languages:
    Python: Not Found
  npmPackages:
    @react-native-community/cli: Not Found
    react: 16.11.0 => 16.11.0
    react-native: 0.62.0 => 0.62.0
  npmGlobalPackages:
    *react-native*: Not Found

我运行了gradlew tasks，但在安装任务下没有看到installDebug。我确信我正确设置了环境变量，包括 android SDK、JDK。我尝试重新安装 react-native。我将我的 sdk 的位置放在 android 文件夹下的 local.properties 中。我跑了gradlew installDebug，出现了installDebug not found in root project '[app's name]'。互联网上的解决方案都不起作用。

谁能帮我解决这个问题？谢谢。

【问题讨论】：

标签： android react-native

【解决方案1】：

我也遇到了同样的问题。这对我有用。

我在 Android Studio 中打开了 Android 项目。这可以位于 YourReactNativeProjectFolder/android

当我在 Android Studio 中打开这个项目时，它缺少配置。等待一段时间，让 Android Studio 对其进行配置并要求您更新 Gradle。更新 Gradle，现在您可以从 Android Studio 或使用命令行“npx react-native run-android”运行您的项目

希望对你有所帮助。

最好的

【讨论】：

【解决方案2】：

在项目根目录尝试以下命令：

cd android && ./gradlew assembleDebug && ./gradlew installDebug

【讨论】：

assembleDebug 不起作用Task 'assembleDebug' not found in root project 'Prism'.

【解决方案3】：

解决方案是在 Android Studio 中加载 /android 文件夹并让它更新 Gradle。之后你就可以运行react-native run-android

【讨论】：

【解决方案4】：

我有同样的错误。试试下面的命令，它会显示代码的确切错误。

cd android && ./gradlew buildRelease

【讨论】：