java - 在 IONIC 3 - "ionic cordova run android"和 "ionic cordova build android"中给出错误

Question

我正在使用 Ionic 3，当我尝试执行“ionic cordova run android”时，出现以下错误，请帮我解决这个问题 -

[16:13:25]  dev server running: http://localhost:8101/

[ERROR] app-scripts serve unexpectedly failed.settings: undefinedcontext: [object Object]


    C:\DevArea\IonicApp\MyApp>cordova run android
    ANDROID_HOME=C:\Users\kavita.verma1\AppData\Local\Android\sdk
    JAVA_HOME=C:\Program Files\Java\jdk1.8.0_131
    Subproject Path: CordovaLib
    Exception in thread "main" java.lang.NullPointerException
            at org.gradle.wrapper.PathAssembler.getDistName(PathAssembler.java:84)
            at org.gradle.wrapper.PathAssembler.getDistribution(PathAssembler.java:40)
            at org.gradle.wrapper.Install.createDist(Install.java:44)
            at org.gradle.wrapper.WrapperExecutor.execute(WrapperExecutor.java:107)
            at org.gradle.wrapper.GradleWrapperMain.main(GradleWrapperMain.java:61)
    Error: cmd: Command failed with exit code 1 Error output:
    Exception in thread "main" java.lang.NullPointerException
            at org.gradle.wrapper.PathAssembler.getDistName(PathAssembler.java:84)
            at org.gradle.wrapper.PathAssembler.getDistribution(PathAssembler.java:40)
            at org.gradle.wrapper.Install.createDist(Install.java:44)
            at org.gradle.wrapper.WrapperExecutor.execute(WrapperExecutor.java:107)
            at org.gradle.wrapper.GradleWrapperMain.main(GradleWrapperMain.java:61)

---

ionic 版本

    C:\DevArea\IonicApp\MyApp>ionic -v
    3.4.0

Answer 1

删除用户数据中的.gradle。
例如:C:\Users\admin\.gradle

然后重试:

ionic cordova run android