react native Exception in thread "main" java

转自:http://www.52php.cn/article/p-onuasaoe-pm.html

1.问题

D:rnworkspaceHello>React-native run-Android
JS server already running.
Building and installing the app on the device (cd android && gradlew.bat install
Debug)…
Downloading https://services.gradle.org/distributions/gradle-2.4-all.zip
……………………………………………………………………..
……………………………..
Unzipping C:Usersltn.gradlewrapperdistsgradle-2.4-all6r4uqcc6ovnq6ac6s0tx
zcpc0gradle-2.4-all.zip to C:Usersltn.gradlewrapperdistsgradle-2.4-all6r
4uqcc6ovnq6ac6s0txzcpc0
Exception in thread “main” java.util.zip.ZipException: error in opening zip file

at java.util.zip.ZipFile.open(Native Method)
    at java.util.zip.ZipFile.<init>(ZipFile.java:215)
    at java.util.zip.ZipFile.<init>(ZipFile.java:145)
    at java.util.zip.ZipFile.<init>(ZipFile.java:159)
    at org.gradle.wrapper.Install.unzip(Install.java:159)
    at org.gradle.wrapper.Install.access$500(Install.java:26)
    at org.gradle.wrapper.Install$1.call(Install.java:69)
    at org.gradle.wrapper.Install$1.call(Install.java:46)
    at org.gradle.wrapper.ExclusiveFileAccessManager.access(ExclusiveFileAcc

essManager.java:65)
at org.gradle.wrapper.Install.createDist(Install.java:46)
at org.gradle.wrapper.WrapperExecutor.execute(WrapperExecutor.java:126)
at org.gradle.wrapper.GradleWrapperMain.main(GradleWrapperMain.java:61)
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:5276) UnhandledPromiseRejectionWarning: Unhandled promise rejection (rejec

tion id: 2): TypeError: Cannot read property ‘message’ of undefined

2.解决

这问题原因是在你创建工程gradle-2.4-all包下载不完全或者没有下载所致。
1.你可以重新创建工程。
2.下载http://pan.baidu.com/s/1b2Vb2Y包，放在C:Usersxxxx.gradlewrapperdistsgradle-2.4-all下，重新运行