android studio problems

1 在android studio 下新建android project ，編譯沒有問題。

而導(dǎo)入已經(jīng)存在的項(xiàng)目時(shí)，一直報(bào)錯(cuò)：Connection refused。

這個(gè)時(shí)候就要考慮是配置哪里跟自己android studio 本地的不一樣，果然：

問題出在 build.gradle:

classpath 'com.android.tools.build:gradle:com.android.tools.build:gradle:2.2.3'

這個(gè)要跟自己local一致才可以。

2 

執(zhí)行 android studio可以編譯項(xiàng)目但是在命令行  ./gradlew 則報(bào)錯(cuò)：

Downloading https://services.gradle.org/distributions/gradle-2.14.1-all.zip

Exception in thread "main" java.lang.RuntimeException: java.net.ConnectException: Connection timed out

at org.gradle.wrapper.ExclusiveFileAccessManager.access(ExclusiveFileAccessManager.java:78)

需要配置project gradle.properties,添加 

systemProp.http.proxyHost=proxy id
systemProp.http.nonProxyHosts=192.168.*,
systemProp.http.proxyPort=3128


systemProp.https.proxyHost=proxy id
systemProp.https.nonProxyHosts=192.168.*,
systemProp.https.proxyPort=3128

因?yàn)閐ownload 用的是https, 而直接用studio 編譯好像用的是http 

3 andorid studio 升級后，直接安裝apk使用 multiple slice apks 的方式，即

adb install-multiple -r code/app/build/outputs/apk/app-debug.apk code/app/build/intermediates/split-apk/debug/slices/slice_3.apk code/app/build/intermediates/split-apk/debug/slices/slice_9.apk code/app/build/intermediates/split-apk/debug/slices/slice_2.apk code/app/build/intermediates/split-apk/debug/slices/slice_0.apk code/app/build/intermediates/split-apk/debug/slices/slice_1.apk code/app/build/intermediates/split-apk/debug/slices/slice_4.apk code/app/build/intermediates/split-apk/debug/slices/slice_8.apk code/app/build/intermediates/split-apk/debug/slices/slice_5.apk code/app/build/intermediates/split-apk/debug/slices/slice_6.apk code/app/build/intermediates/split-apk/debug/slices/slice_7.apk 
Split APKs installed

但是編譯出來的

app-debug.apk

直接安裝就會報(bào)錯(cuò)，所以想使用adb install方式安裝的話需要 

disable instant run.  

具體 File->settings->searchbox(type instant run)-> select disable option.

4 apk安裝不上，報(bào)錯(cuò)： INSTALL_FAILED_TEST_ONLY: installPackageLI.

原因：　android studio ,gradle plugin, gradle tool是beta版本，版本配置不對導(dǎo)致的

in app/gradle/wrapper/gradle-wrapper.properties:

distributionUrl=https\://services.gradle.org/distributions/gradle-4.0-rc-1-all.zip

app/build.gradle

 dependencies {

    classpath 'com.android.tools.build:gradle:3.0.0-alpha4'

}

都需要修改，再編譯即可。

5 在命令行編譯app ,

./gradlew  clean assemble：

得到錯(cuò)誤：

FAILURE: Build failed with an exception.

* What went wrong:
A problem occurred configuring root project 'FacebookTestPlan'.
> Could not resolve all files for configuration ':classpath'.
   > 3.0.0-alpha4.
     Searched in the following locations:
         https://jcenter.bintray.com/com/android/tools/build/gradle/3.0.0-alpha4/gradle-3.0.0-alpha4.pom
         https://jcenter.bintray.com/com/android/tools/build/gradle/3.0.0-alpha4/gradle-3.0.0-alpha4.jar
     Required by:
         project :

原因：看起來是下載組件不成功。

在project/build.gradle中

a)buildscript 和allprojects都需要添加

maven {

            url 'https://maven.google.com'

            // Alternative URL is 'https://dl.google.com/dl/android/maven2/'

        }

兩個(gè)都需要根據(jù)數(shù)據(jù)下載相應(yīng)插件，

b)allprojects 并不包括buildscript. buildscript只是給build的組件用的。

The buildscript block is where you configure the repositories and dependencies for Gradle itself--meaning, you should not include dependencies
for your modules here. 
  
The allprojects block is where you configure the repositories and
 * dependencies used by all modules in your project, such as third-party plugins
 * or libraries. Dependencies that are not required by all the modules in the
 * project should be configured in module-level build.gradle files.

c) 寫在app/build.gradle里面和寫在allprojects是一樣的。

related URL :https://developer.android.com/studio/build/index.html

6