Android Studio提高Build速度

Android Studio编译APP时速度非常慢,要几十秒,编译后日志给出了下面的提示信息:

:app:mergeDebugResources This task frequently determines build duration because of dependencies between its inputs/outputs and other tasks.  Duration: 32.1s / 46.6% 
Sub-project: :app 
Plugin: N/A   
Type: com.android.build.gradle.tasks.MergeResources  
Warnings No warnings found  Reason task ran Output property 'blameLogOutputFolder' file D:\AndroidWorkSpace\XXX\app\build\intermediates\merged_res_blame_folder\debug\out has been removed. Output property 'blameLogOutputFolder' file D:\AndroidWorkSpace\XXX\app\build\intermediates\merged_res_blame_folder\debug\out\multi-v2 has been removed. Output property 'blameLogOutputFolder' file D:\AndroidWorkSpace\XXX\app\build\intermediates\merged_res_blame_folder\debug\out\multi-v2\debug.json has been removed. 

根源在于资源文件太多,在build.gradle(app)defaultConfig中添加:

resConfigs "zh", "zh-rCN", "en"

只保留中文和英文,再次编译,速度降到了10秒以内.