Android build gradle is too slow (Dependency Resolution)

Android Android Studio Gradle Android Gradle-Plugin build.gradle

Android Problem Overview

I've been working with Android Studio (my current version 1.5) for 2 years. Everything was OK, but when I downloaded Canary (2.1 p5), everything went wrong. Every time I want to create a new project or open a project or sync or import a new lib or dependency, gradle is taking too long to build — nearly 20 min.

I did not do anything, I just downloaded the Canary version and ran it.

Symptoms :

It happened when I connected to Internet
The first delay is on Gradle: Resolve dependencies ':app:_debugCompile'
...
After 25 min building almost done

Note: When I disconnect my Internet, gradle will finish as fast as possible

I tried to fix this by these ways:

I changed the gradle to offline work (it worked but I don't want this way, because I want to import libs or dependencies)
I've created a new file (file name is gradle.properties) in C:\Users\username\.gradle then wrote these lines into it
```
org.gradle.parallel=true
org.gradle.daemon=true
```
I removed that version then installed my old version which worked OK but the problem was still there :(
Disable / Enable firewall
Disable / Enable AntiVirus (Nod32)
Reinstall Windows OS (8.1)
I've downloaded all versions (1.0.0, ..., 1.5.1, 2.0.0, 2.1)
I've used a proxy

System info:

CPU: Intel Core i5
Ram: 6.00 GB
OS: Windows 8.1 64 bit

build.gradle(Project:appName)

// Top-level build file where you can add configuration options common to all sub-projects/modules.

buildscript {
	repositories {
		jcenter()
	}
	dependencies {
		classpath 'com.android.tools.build:gradle:1.5.0'

		// NOTE: Do not place your application dependencies here; they belong
		// in the individual module build.gradle files
	}
}

allprojects {
	repositories {
		jcenter()
	}
}

task clean(type: Delete) {
	delete rootProject.buildDir
}

gradle.build(Module:app)

apply plugin: 'com.android.application'

android {
	compileSdkVersion 23
	buildToolsVersion "23.0.3"

	defaultConfig {
		applicationId "com.example.test.myapplication"
		minSdkVersion 14
		targetSdkVersion 23
		versionCode 1
		versionName "1.0"
	}
	buildTypes {
		release {
			minifyEnabled false
			proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
		}
	}
}

dependencies {
	compile fileTree(include: ['*.jar'], dir: 'libs')
	compile 'com.android.support:appcompat-v7:23.3.0'
}

Gradle report after building

Dependencies 	              Duration
All dependencies 	          14m3.43s
:app:_releaseCompile 	      3m30.96s
:app:_debugCompile 	          3m30.73s
:app:_debugApk 	              3m30.69s
:app:_releaseApk 	          3m30.62s
:classpath 	                  0.428s
:app:_debugAndroidTestCompile 0.001s
:app:_debugAndroidTestApk 	  0s
:app:_debugUnitTestApk 	      0s
:app:_debugUnitTestCompile 	  0s
:app:_releaseUnitTestApk 	  0s
:app:_releaseUnitTestCompile  0s
:app:releaseWearApp 	      0s
:app:wearApp 	              0s

After installing android studio 2.0 stable version

7:23:47 PM Gradle sync started ====> 8:13:21 PM Gradle sync completed

Android Solutions

Solution 1 - Android

The problem is solved !

After 2 days searching , I got the solution , so I would like to share with all people who may have the same problem. The problem is gradlecan not connect to center repository in some country. When you create a new project or import , your center repository is jcenter() by default and whenever you want to build or sync or add new external dependency, gradle is going to connect to https://bintray.com/ but it can not and the building process is going to wait till connect to jcenter(), so this process might take long time ( +30 min ) , even you can not add new dependency .

Solution :

Make sure you have latest stable version ( current 2.0.0 )
Make sure your gradle version is 2.0.0 in build.gradle (classpath 'com.android.tools.build:gradle:2.0.0')
Final step and most important one is change your jcenter() to mavenCentral()

So you can easily add new dependency and sync project under 3sec !

buildscript {
    repositories {
        mavenCentral()
    }
    dependencies {
        classpath 'com.android.tools.build:gradle:2.0.0'

        // NOTE: Do not place your application dependencies here; they belong
        // in the individual module build.gradle files
    }
}

allprojects {
    repositories {
        mavenCentral()
    }
}

task clean(type: Delete) {
    delete rootProject.buildDir
}

Have Fun

Solution 2 - Android

You could optimize the gradle build process ...

Try to put the gradle on offline mode forcing to build without any connection to external repositories, like this:

This helped me a lot, because in my work, all connections are behind a proxy and it increase the build time.

If this is not enough for you, take a time testing the options on the Gradle > Experimental ... Some options may improve you performance:

Note: In newer version of Android studio, View->Tool Windows->Gradle->Toggle button of online/offline

Solution 3 - Android

In addition to @Mehdi Jahed Manesh answer above.

Increase the amount of memory allocated to the Gradle Daemon VM by 1 Gb, to a minimum of 2 Gb, using the org.gradle.jvmargs property like this:

org.gradle.jvmargs=-Xmx2048m

Solution 4 - Android

Once the initial build has completed try enabling offline Mode from the gradle settings. So that every consecutive builds will not start resolving dependencies, instead it gets from the cache. If you add a new dependency it will prompt you to disable offline mode and rebuild it.

Solution 5 - Android

Like Ismail Iqbal's answer said, put gradle under offline mode works for me.

If you're using android studio, follow Fabio Filho's answer
If you're using command line like me, you can try

gradlew assembleReleaseStaging(your task name) --offline

Solution 6 - Android

For those who use repositories that require authentication, this issue may be solved by configuring gradle to use only a single auth scheme:

repositories {
    maven {
        credentials {
            username INTERNAL_REPO_USERNAME
            password INTERNAL_REPO_PASSWORD
        }
        // here comes the important part
        authentication {
            basic(BasicAuthentication)
        }
        url INTERNAL_REPO_URL
    }
}

It turned out that upon authenticating against repositories, gradle attempts authentication using all kind of schemes. The above config makes gradle only use basic auth. Here is the full list of available schemes.

Solution 7 - Android

In my case, I solved it by installing a new version of the Java JDK. After installing the new JDK, open AS, go to File→Project Structure→SDK Location, and change JDK location to that of the new version of the Java JDK. Then you will be asked for firewall permission; check Public and apply. Let it resolve gradle.

Solution 8 - Android

Please check this story. It might not related to gradle but it can speed up your build without too much changes:

https://android.jlelse.eu/is-your-android-studio-always-slow-heres-how-to-speed-up-immediately-326ef9238024

Solution 9 - Android

stop the gradle download and click file -> "Sync project with Gradle Files"

Solution 10 - Android

I have seen another issue. The solution might help someone

Recently i have set http_proxy and https_proxy under system environment variables. I had to remove both of them and then set the proxy in studio settings.

Solution 11 - Android

change classpath 'com.android.tools.build:gradle:1.5.0' to

classpath 'com.android.tools.build:gradle:2.0.0'

and change buildToolsVersion "23.0.3" to

buildToolsVersion "23.0.2"

and use android studio 2.0 stable version. let me know you want more details or this solution did not work to you.

Content Type	Original Author	Original Content on Stackoverflow
Question	Mehdi Jahed Manesh	View Question on Stackoverflow
Solution 1 - Android	Mehdi Jahed Manesh	View Answer on Stackoverflow
Solution 2 - Android	Fabio Filho	View Answer on Stackoverflow
Solution 3 - Android	ayz4sci	View Answer on Stackoverflow
Solution 4 - Android	Ismail Iqbal	View Answer on Stackoverflow
Solution 5 - Android	iplus26	View Answer on Stackoverflow
Solution 6 - Android	Balazs Banyai	View Answer on Stackoverflow
Solution 7 - Android	Ananta Dwi Prasetya Purna Yuda	View Answer on Stackoverflow
Solution 8 - Android	surga	View Answer on Stackoverflow
Solution 9 - Android	Dinesh	View Answer on Stackoverflow
Solution 10 - Android	sunil	View Answer on Stackoverflow
Solution 11 - Android	mehrdad khosravi	View Answer on Stackoverflow