我最近使用react-native init构建了新应用。
运行react-native run-android后出现此错误：
FAILURE: Build failed with an exception.
* What went wrong:
Execution failed for task ':app:preDexDebug'.
> com.android.ide.common.process.ProcessException: org.gradle.process.internal.ExecException: Process 'command 'C:\Program Files\Java\jdk1.8.0_112\bin\java.exe'' finished with non-zero exit value 1
* Try:
Run with --stacktrace option to get the stack trace. Run with --info or --debug option to get more log output.
BUILD FAILED
Total time: 19.52 secs
Could not install the app on the device, read the error above for details.
Make sure you have an Android emulator running or a device connected and have
set up your Android development environment:
https://facebook.github.io/react-native/docs/android-setup.html
(node:3632) UnhandledPromiseRejectionWarning: Unhandled promise rejection (rejection id: 2): TypeError: Cannot read property 'message' of undefined
(node:3632) DeprecationWarning: Unhandled promise rejections are deprecated. In the future, promise rejections that are not handled will terminate the Node.js process with a non-zero exit code.
我已经尝试在我的android文件夹中运行gradlew clean，但仍然没有运气。
任何解决方案？
答案 0 :(得分：0)
有同样的问题，经过大量的故障排除后我发现android项目已损坏。以下是我修复我的方法：
从项目文件夹：
rm -rf android react-native upgrade 注意：只是在不删除android文件夹的情况下运行react-native升级似乎不起作用。