在下面的目錄下面創(chuàng)建gradle.properties文件：

• /home/<username>/.gradle/ (Linux)
• /Users/<username>/.gradle/ (Mac)
• C:\Users\<username>\.gradle (Windows)
• 把下面配置復制gradle.properties文件也可以優(yōu)化：
• 1. # Project-wide Gradle settings.
     
  2. # IDE (e.g. Android Studio) users:
     
  3. # Settings specified in this file will override any Gradle settings
     
  4. # configured through the IDE.
     
  5. # For more details on how to configure your build environment visit
     
  6. # http://www./docs/current/userguide/build_environment.html
     
  7. # The Gradle daemon aims to improve the startup and execution time of Gradle.
     
  8. # When set to true the Gradle daemon is to run the build.
     
  9. # TODO: disable daemon on CI, since builds should be clean and reliable on servers
     
  10. org.gradle.daemon=true
      
  11. # Specifies the JVM arguments used for the daemon process.
      
  12. # The setting is particularly useful for tweaking memory settings.
      
  13. # Default value: -Xmx10248m -XX:MaxPermSize=256m
      
  14. org.gradle.jvmargs=-Xmx2048m -XX:MaxPermSize=512m -XX:+HeapDumpOnOutOfMemoryError -Dfile.encoding=UTF-8
      
  15. # When configured, Gradle will run in incubating parallel mode.
      
  16. # This option should only be used with decoupled projects. More details, visit
      
  17. # http://www./docs/current/userguide/multi_project_builds.html#sec:decoupled_projects
      
  18. org.gradle.parallel=true
      
  19. # Enables new incubating mode that makes Gradle selective when configuring projects.
      
  20. # Only relevant projects are configured which results in faster builds for large multi-projects.
      
  21. # http://www./docs/current/userguide/multi_project_builds.html#sec:configuration_on_demand
      
  22. org.gradle.configureondemand=true

  復制代碼
  同時上面的這些參數(shù)也可以配置到前面的用戶目錄下的gradle.properties文件里，那樣就不是針對一個項目生效，而是針對所有項目生效。
  上面的配置文件主要就是做， 增大gradle運行的java虛擬機的大小，讓gradle在編譯的時候使用獨立進程，讓gradle可以平行的運行。

  1.申請大內存

  installation path\studio64.exe.vmoptions or studio.exe.vmoptions

  使用文本編輯器打開，找到起始兩行，如下

  -Xms128m
  -Xmx750m

  
  

  修改最小值和最大值，建議為

  -Xms256m
  -Xmx2048m

  
  

    2 優(yōu)化編譯

     file->setting->compile

     勾選除第二項之外的其他選項，并在VM options里填入：

     -Xmx2048m -XX:MaxPermSize=512m -XX:+HeapDumpOnOutOfMemoryError -Dfile.encoding=UTF-8

經過測試，編譯速度有很大提升，比較大的項目從之前的5-8分鐘可以減少到1-2分鐘。

用命令行Build

可以參考這個討論串

https://plus.google.com/u/0/+RicardoAmaral/posts/e9PG6vSN5w3

gradle assembleDebug

實測速度快50%左右 原理不明

回頭寫個腳本 build完成再自動安裝運行應該就好了