froger_mcs froger_mcs - 2 years ago 163
Android Question

Building and running app via Gradle and Android Studio is slower than via Eclipse

I have a multi-project (~10 modules) of which building takes about 20-30 seconds each time. When I press Run in Android Studio, I have to wait every time to rebuild the app, which is extremely slow.

Is it possible to automate building process in Android Studio? Or do you have any advice on how to make this process faster?

In Eclipse, thanks to automatic building, running the same project on an emulator takes about 3-5 seconds.

This is my build.gradle file (app module):

buildscript {
repositories {
maven { url '' }
dependencies {
classpath ''
apply plugin: 'android'

dependencies {
compile fileTree(dir: 'libs', include: '*.jar')
compile project(':libraries:SharedLibs')
compile project(':libraries:actionbarsherlock')
compile project(':libraries:FacebookSDK')
compile project(':libraries:GooglePlayServices')
compile project(':libraries:HorizontalGridView')
compile project(':libraries:ImageViewTouch')
compile project(':libraries:SlidingMenu')

android {
compileSdkVersion 17
buildToolsVersion "17.0.0"

defaultConfig {
minSdkVersion 8
targetSdkVersion 16

Answer Source

Configuration File

Create a file named in whatever directory applies:

  • /home/<username>/.gradle/ (Linux)
  • /Users/<username>/.gradle/ (Mac)
  • C:\Users\<username>\.gradle (Windows)



Ensure you are using the latest development versions.

Command Line Arguments

The --daemon --parallel --offline command line arguments for Gradle builds work great. Learn about these options from the documentation.


An optimized Gradle properties file ( includes:

# Project-wide Gradle settings.

# IDE (e.g. Android Studio) users:
# Settings specified in this file will override any Gradle settings
# configured through the IDE.

# For more details on how to configure your build environment visit

# The Gradle daemon aims to improve the startup and execution time of Gradle.
# When set to true the Gradle daemon is to run the build.
# TODO: disable daemon on CI, since builds should be clean and reliable on servers

# 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

# Enables new incubating mode that makes Gradle selective when configuring projects. 
# Only relevant projects are configured which results in faster builds for large multi-projects.

Gradle properties works local if you place them at projectRoot\ and globally if you place them at user_home\.gradle\ Properties applied if you run gradle tasks from console or directly from idea:

IDE Settings

Or enable gradle properties from the IDE settings

IDE settings


Prefer @aar dependencies over library projects.

Search aar package on mavenCentral (, github (, or build it manually from sources and put into libs folder. If you are not editing sources of the dependency library you should not build it every time with your project sources.


Consider to exclude project and cache files from antivirus scanning. This is obviously a trade off with security (don't try this at home!). But if you switch between branches a lot, then antivirus will rescan files before allowing gradle process to use it, which slows build time (in particular AndroidStudio sync project with gradle files and indexing tasks). Measure build time and process CPU with and without antivirus enabled to see if it is related.


Don't use auto-import feature (yet) due to known bug which will slow down the IDE.

Fabric Crashlytics

Fabric has typo at the documentation pointing to the private maven repo which needs authorization.

More Reading

An article on Gradle describes a few settings to increase its speed.

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