android studio 新建工程報(bào)錯(cuò)

Error:Could not resolve all files for configuration ':app:debugCompileClasspath'.
> Could not resolve com.android.support:appcompat-v7:26.0.0-beta1.
  Required by:
      project :app
   > Could not resolve com.android.support:appcompat-v7:26.0.0-beta1.
      > Could not get resource 'https://dl.google.com/dl/android/maven2/com/android/support/appcompat-v7/26.0.0-beta1/appcompat-v7-26.0.0-beta1.pom'.
         > Could not GET 'https://dl.google.com/dl/android/maven2/com/android/support/appcompat-v7/26.0.0-beta1/appcompat-v7-26.0.0-beta1.pom'.
            > Connect to dl.google.com:443 [dl.google.com/203.208.46.146] failed: Operation timed out (Connection timed out)

1、取消代理

Preferences->Appearance & Behavior->System Settings->Http Proxy
選擇 No Proxy

2、取消隱藏代理

關(guān)掉隱形代理在mac 上對(duì)應(yīng)的目錄：~/.gradle/gradle.properties

3、
Preferences->Build,Execution,Deployment->Gradle，取消“offline work”的勾選，讓studio去下載即可。

4、
Preferences->Build,Execution,Deployment->Gradle->Android Studio
取消勾選Disable embedded Maven Repository

5、修改project的bulid.gradle

// Top-level build file where you can add configuration options common to all sub-projects/modules.

buildscript {
 
 repositories {
 google()
 jcenter()
 }
 dependencies {
 classpath 'com.android.tools.build:gradle:3.0.1'
 

 // NOTE: Do not place your application dependencies here; they belong
 // in the individual module build.gradle files
 }
}

allprojects {
 repositories {
 google()
 jcenter()
 }
}
task clean(type: Delete) {
 delete rootProject.buildDir
}

在兩個(gè)repository加了，阿里云的鏡像

 maven {
 url 'http://maven.aliyun.com/nexus/content/groups/public/'
 }

再次sync，問題解決，但是把maven去掉，也能正常sync，有點(diǎn)迷，前幾步，我的as本來就配好沒有修改，猜測(cè)可能是wifi不好。。。

知識(shí)點(diǎn)補(bǔ)充：Android Studio 新建工程報(bào)錯(cuò)“”Error occurred during initialization of VM ..."解決辦法

Android Studio 新建工程報(bào)錯(cuò)：

Error occurred during initialization of VM Could not reserve enough space for 1572864KB object heap

You encounter following error:

Error occurred during initialization of VM Could not reserve enough space for 1572864KB object heap

原因：Java虛擬機(jī)（JVM）沒有足夠的內(nèi)存空間。

解決方案：

1：在個(gè)人文件夾（ (C:/Users/username/.gradle 或 ~/.gradle)）下創(chuàng)建gradle.properties文件，添加

org.gradle.jvmargs=-Xmx512m -XX:MaxPermSize=512m


2：或者直接在Android Studio中g(shù)radle.properties文件中添加下面這行，存在則修改

org.gradle.jvmargs=-Xmx512m -XX:MaxPermSize=512m

總結(jié)

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