Android Studio import Project 的正确姿势

import project 网络下载的项目经常卡住，常见原因有三个：

1、project自带的gradle与as当前使用的gradle版本不一致

2、project生成的as与本机as版本差别大

3、project所引用的第三方库下载不下来

一、针对问题1，修改project使用本机的gradle版本：

1-1、build.gradle

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

//apply from: 'config/config.gradle'

apply from: rootproject.file('dependencies.gradle')

buildscript {
    repositories {
        jcenter()
        mavencentral()
    }
    dependencies {
        classpath 'com.android.tools.build:gradle:3.0.1'
//        classpath 'com.android.tools.build:gradle:2.4.0-alpha3'


        // note: do not place your application dependencies here; they belong
        // in the inpidual module build.gradle files

        classpath 'com.neenbedankt.gradle.plugins:android-apt:1.8'

        // lambda表达式
        classpath 'me.tatarka:gradle-retrolambda:3.5.0'//retrolambda


        //热修复tinker---------------
        classpath ('com.tencent.tinker:tinker-patch-gradle-plugin:1.9.2')
        //热修复tinker---------------
//        classpath 'com.mcxiaoke.gradle:packer-ng:1.0.7'

    }
}

allprojects {
}

task clean(type: delete) {
    delete rootproject.builddir
}

1-2、gradle-wrapper.properties

#tue nov 07 09:09:35 cst 2017
distributionbase=gradle_user_home
distributionpath=wrapper/dists
zipstorebase=gradle_user_home
zipstorepath=wrapper/dists
distributionurl=https\://services.gradle.org/distributions/gradle-4.1-all.zip

二、针对第二个问题，as每次升级导致的差异不一，需要区别对待。比如从2到3的build如下：

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

//apply from: 'config/config.gradle'

apply from: rootproject.file('dependencies.gradle')


buildscript {
}

allprojects {
    repositories {

        maven {
            url "https://jitpack.io"
        }
        google()

        jcenter()
        mavencentral()
        maven { url 'https://oss.sonatype.org/content/repositories/snapshots' }

        maven {
            url "https://mvn.gt.igexin.com/nexus/content/repositories/releases/"

        }

//        maven { url '/users/felix/library/android/sdk/extras/android/m2repository' }

        flatdir{
            dirs 'libs'
        }

        maven{ url 'https://dl.bintray.com/tinker/maven'}
    }
}

task clean(type: delete) {
    delete rootproject.builddir
}

处理完以上两步，就可以愉快滴打开as来import project了，一般情况下能够进入到as工作区。如果10min还是进不去，可能就是问题3了，需要继续第三部处理。

三、问题3一般需要网络*才得行，打开gradle.properties设置网络代理，然后再打开as来import project

# project-wide gradle settings.

# ide (e.g. android studio) users:
# gradle settings configured through the ide *will override*
# any settings specified in this file.

# for more details on how to configure your build environment visit
# https://www.gradle.org/docs/current/userguide/build_environment.html

# specifies the jvm arguments used for the daemon process.
# the setting is particularly useful for tweaking memory settings.
org.gradle.jvmargs=-xmx4608m
#org.gradle.jvmargs=-xmx4608m -xx:maxpermsize=512m -xx:+heapdumponoutofmemoryerror -dfile.encoding=utf-8

# when configured, gradle will run in incubating parallel mode.
# this option should only be used with decoupled projects. more details, visit
# https://www.gradle.org/docs/current/userguide/multi_project_builds.html#sec:decoupled_projects
# org.gradle.parallel=true

systemprop.http.proxyport=1234

systemprop.http.proxyuser=xxxx
systemprop.http.proxypassword=xxxx

systemprop.https.proxypassword=xxxx
systemprop.https.proxyhost=111.111.111.111

systemprop.http.proxyhost=11.111.11.11
systemprop.https.proxyport=1111
systemprop.https.proxyuser=xxxx