10 tips to speed up Android Gradle build

A few months ago, in the year’s Google I/O, there is a wonderful tutorial to guild us how to speed up Android Gradle build. Grade always has a notorious reputation about the slow build for large modules dependency project, those upgrade will solve those problems.

I copy a few of them here for the future reference. Although I still wait for the latest Android Studio 3.0 and grade plugin release which those tips dependence on.

	# Tip 1: Use the lastes Android Gradle plugin
	buildscript {
	repositories {
	jcenter()
	maven { url 'http://maven.google.com' }
	}
	dependencies {
	classpath 'com.android.tools.build:gradle:3.0.0-alpha1'
	}
	}
	# Tip 2: Avoid legacy multidex
	# legacy multidex = Multidex + minSdkVersion < 21
	# Android Studio 2.3+ will automatically avoid this when running from IDE when possible.
	productFlavors {
	development {
	minSdkVersion 21
	}
	}
	# Tip 3: Disable multi-APK
	android {
	if (project.hasProperty('devBuild')) {
	splits.abi.enable = false
	splits.density.enable = false
	}
	}
	# or from cmd: ./gradlew project:assembleDevelopmentDebug -PdevBuild
	# Tip 4: Include minimal resources
	productFlavors {
	development {
	minSdkVersion 21
	resConfigs("en", "xxhdpi")
	}
	}
	# Tip 5: Disable png crunching
	android {
	if (project.hasProperty('devBuild')) {
	aaptOptions.cruncherEnabled = false
	}
	}
	# Tip 6: Use Instance Run
	# Tip 7: Avoid inadvertent changes
	# Tip 8: Don't use dynamic versions
	# Tip 9: Watch the memory
	# Tip 10: Enable Gradle Caching
	# New from gradle 3.5, differ from 2.3 build cache
	# Set this in gradle.properties
	# org.gradle.caching = true

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