React Native项目无法用android模拟器打开

Question

我是一个反应原生的新手。我开始了一个新项目并遵循了所有步骤。我之前有 Android Studio，我用它启动了模拟器。运行npx react-native run-android 命令后出现此错误。

**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 34s
error Failed to install the app. Make sure you have the Android development environment set up: https://reactnative.dev/docs/environment-setup. Run CLI with --verbose flag for more details.
Error: Command failed: gradlew.bat app:installDebug -PreactNativeDevServerPort=8081
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 34s**

然后我运行abd -d 命令，我得到了这个。

Android Debug Bridge version 1.0.41
Version 29.0.6-6198805
Installed as C:\Users\User\AppData\Local\Android\Sdk\platform-tools\adb.exe

你能帮我解决这个问题吗？

Answer 1

如here 所说，您可以尝试在项目的根文件夹中运行以下命令：

cd android && ./gradlew installDevDebug && cd .. && react-native run-android --variant=DevDebug

在此之后，您的项目应该可以在您的 Android 上成功运行。

如果没有，用android studio打开你的项目一次，然后用react-native run-android重新编译

如果即使在此之后您的所有项目都无法运行，请确保您的 PATH 变量中已经有 ANDROID_HOME 变量