1.在build.gradle新增指令碼指定編譯堆記憶體

• 如果在整個工程中生效，則在build.gradle中增加如下配置：

android {

..............

      dexOptions {

            incremental true

            javaMaxHeapSize "4g"

        }

...............

}

• 如果只在單元測試的時候生效，則在build.gradle中增加如下配置：

  android {
  
  ..............
  
      testOptions {
  
          android.dexOptions {
  
              incremental 
   
  true
  
              javaMaxHeapSize "4g"
  
          }
  
      }
  
  ...............
  
  }

  2.新增gradle的配置檔案指定堆記憶體 也可以在gradle.properties中修改build環境中的jvmargs引數大小： 在專案根目錄新建gradle.properties檔案內容為：

• ## Project-wide Gradle settings.
  #
  # For more details on how to configure your build environment visit
  # http://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.
  # Default value: 
   
  -Xmx10248m -XX:MaxPermSize=256m
  # org.gradle.jvmargs=-Xmx2048m -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
  # http://www.gradle.org/docs/current/userguide/multi_project_builds.html#sec:decoupled_projects
  # org.gradle.parallel=true
  #Mon Jun 13 14:58:46 CST 2016
  org.gradle.daemon=true
  org.gradle.parallel=true
  org.gradle.jvmargs=-Xmx5120m