命令“離子cordova模擬android”不起作用

Question

我在將項目運行到android模擬器時遇到問題：當我運行此命令“ ionic cordova emulator android”時，它將出錯。 我正在使用動態ssh和socks隧道運行膩子。 我的終端的完整日志如下所示。

PS D:\Hamid\wooionic2> ionic cordova run android
...
[12:06:30]  sass started ...
Without `from` option PostCSS could generate wrong source map and will not find Browserslist config. Set it to CSS file path or to `undefined`
to prevent this warning.

...

科爾多瓦運行Android檢測到Android Studio項目

ANDROID_HOME=C:\Users\Hamid\AppData\Local\Android\sdk
JAVA_HOME=C:\Program Files\java\jdk1.8.0_172
studio
Subproject Path: CordovaLib
Subproject Path: app
...

FAILURE: Build failed with an exception.

* What went wrong:
A problem occurred configuring root project 'android'.
> Could not resolve all files for configuration ':classpath'.
   > Could not resolve com.android.tools.build:gradle:3.0.0.
     Required by:
         project :
      > Could not resolve com.android.tools.build:gradle:3.0.0.
         > Could not get resource 'https://dl.google.com/dl/android/maven2/com/android/tools/build/gradle/3.0.0/gradle-3.0.0.pom'.
            > Could not GET 'https://dl.google.com/dl/android/maven2/com/android/tools/build/gradle/3.0.0/gradle-3.0.0.pom'.
               > dl.google.com:443 failed to respond
      > Could not resolve com.android.tools.build:gradle:3.0.0.
         > Could not get resource 'https://jcenter.bintray.com/com/android/tools/build/gradle/3.0.0/gradle-3.0.0.pom'.
            > Could not GET 'https://jcenter.bintray.com/com/android/tools/build/gradle/3.0.0/gradle-3.0.0.pom'.
               > jcenter.bintray.com:443 failed to respond
      >
Could not resolve com.android.tools.build:gradle:3.0.0.
         > Could not get resource 'https://maven.google.com/com/android/tools/build/gradle/3.0.0/gradle-3.0.0.pom'.
            > Could not GET 'https://maven.google.com/com/android/tools/build/gradle/3.0.0/gradle-3.0.0.pom'.
               > maven.google.com:443 failed to respond

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

BUILD FAILED in 1s
(node:7272) UnhandledPromiseRejectionWarning: Error: cmd: Command failed with exit code 1 Error output:
FAILURE: Build failed with an exception.


BUILD FAILED in 1s
    at ChildProcess.whenDone (D:\Hamid\wooionic2\platforms\android\cordova\node_modules\cordova-common\src\superspawn.js:169:23)
    at emitTwo (events.js:126:13)
    at ChildProcess.emit (events.js:214:7)
    at maybeClose (internal/child_process.js:925:16)
    at Process.ChildProcess._handle.onexit (internal/child_process.js:209:5)
(node:7272) UnhandledPromiseRejectionWarning: Unhandled promise rejection. This error originated either by throwing inside of an async function without a catch block, or by rejecting a promise which was not handled with .catch(). (rejection id: 1)
(node:7272) [DEP0018] 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.

[OK] Your app has been deployed.
     Did you know you can live-reload changes from your app with --livereload?

它說：

Could not resolve com.android.tools.build:gradle:3.0.0.
         > Could not get resource 'https://dl.google.com/dl/android/maven2/com/android/tools/build/gradle/3.0.0/gradle-3.0.0.pom'.
            > Could not GET 'https://dl.google.com/dl/android/maven2/com/android/tools/build/gradle/3.0.0/gradle-3.0.0.pom'.
               > dl.google.com:443 failed to respond

錯誤在哪里？

Answer 1

我禁用了膩子（充當代理），然后再次運行命令：“ cordova模擬android”

但是這次感覺到了新的錯誤：

A problem occurred configuring root project 'android'.

無法解析配置'：classpath'的所有文件。 無法解析com.android.tools.build:gradle:3.0.0。 必填項：project：無法解析com.android.tools.build:gradle:3.0.0。 無法獲取資源' https://jcenter.bintray.com/com/android/tools/build/gradle/3.0.0/gradle-3.0.0.pom '。 無法獲取' https://jcenter.bintray.com/com/android/tools/build/gradle/3.0.0/gradle-3.0.0.pom '。 連接到127.0.0.1:8085 [/127.0.0.1]失敗：連接被拒絕：連接

127.0.0.1:8085是我設置為puty ssh隧道的地址和端口。 但是我找不到從我的項目中刪除此代理的設置在哪里。 最后，幸運的是我在此文件（gradle.properties）中找到了它：

C：\\用戶\\ USERNAME.gradle \\ gradle.properties

在此文件中，我刪除了以下幾行：

systemProp.https.proxyPort=8085
systemProp.http.proxyHost=127.0.0.1
systemProp.https.proxyHost=127.0.0.1
systemProp.http.proxyPort=8085

問題消失了 。 但是我還不知道gradle如何獲得和設置代理設置！ 有人知道嗎？