Cannot change dependencies of configuration (after enabling instant run)

I just enabled instant run in my android studio project. (Followed the instructions here)

My project contains git submodules and somehow these do not compile anymore.

This is the error i get:

Error:(8, 0) Cannot change dependencies of configuration ':libraries:my_library:classpath' after it has been resolved.

Any idea what could be wrong there ?

Top level build.gradle:

buildscript {
repositories {
    mavenCentral()
    jcenter()
    maven { url 'https://maven.fabric.io/public' }
}

dependencies {
    classpath 'com.android.tools.build:gradle:2.0.0-alpha1'
    classpath 'com.novoda:bintray-release:0.2.7'
    classpath 'io.fabric.tools:gradle:1.+'
}}

Module build.gradle:

apply plugin: 'android'
apply plugin: 'io.fabric'

android {

    defaultConfig {
       versionCode 4850
       versionName '4850'
       compileSdkVersion 23
       buildToolsVersion '23.0.1'
    }

    packagingOptions {
        exclude 'META-INF/LICENSE'
        exclude 'META-INF/MANIFEST.MF'
        exclude 'META-INF/NOTICE'
    }

    compileOptions {
        sourceCompatibility JavaVersion.VERSION_1_7
        targetCompatibility JavaVersion.VERSION_1_7
    }

    useLibrary 'org.apache.http.legacy'
}

repositories {
    mavenCentral()
    jcenter()
}


dependencies {
    [skip]
    compile project(':libraries:my_library:sdk')
}

Library build.gradle

apply plugin: 'com.android.library'

android {
    compileSdkVersion 23
    buildToolsVersion '23.0.2'

    defaultConfig {
        minSdkVersion 14
        targetSdkVersion 23
    }

    lintOptions {
        abortOnError false
    }
}

repositories {
    mavenCentral()
}

dependencies {
    compile fileTree(include: '*.jar', dir: 'libs')
    compile 'com.android.support:support-v4:23.1.0'
    compile 'com.android.support:appcompat-v7:23.1.0'

    testCompile 'junit:junit:4.12'

}

gradle reads and executes all build.gradle files in all folders of the included modules. As the error shows, it also tries to execute the root build script of :libraries:my_library.

You have to change your settings.gradle and include the library project by setting its 'projectDir':

include ':app'

// Give your library project any module name, i.e. ':sdk'
include ':sdk'
// Then set the project path of the library module
project(':sdk').projectDir = new File('libraries/my_library/sdk')

With this settings.gradle you can reference the library project as gradle dependency with:

compile project(':sdk')

I had the same problem. I resolved it by removing the classpath in the submodule Top-level build.gradle file.

dependencies { 
     // classpath 'com.android.tools.build:gradle:1.0.0'
}

I'm not sure if it's the best thing to do, but it worked for me.

I had the same problem. I compared it to the (working) sample project by @RaGe and found the minor difference.

The sub project folder has to start with a Upper case letter.

Here is the change I did on @RaGes sample to break it and get it working again.

Broken structure:

android-multi-project-sample
    + .gralde
    + .idea
    + app
    + build
    + gradle
    + myApplication2
    - .gitignore
    - android-multi-project-sample.iml
    - build.gradle
    - gradle.properties
    - gradlew
    - gradlew.bat
    - local.properties
    - settings.gradle

results in the following error:

Error:(8, 0) Cannot change dependencies of configuration ':myApplication2:classpath' after it has been resolved.

Working structure (with upper case sub project)

android-multi-project-sample
    + .gralde
    + .idea
    + app
    + build
    + gradle
    + MyApplication2     // upper case!!!!!!
    - .gitignore
    - android-multi-project-sample.iml
    - build.gradle
    - gradle.properties
    - gradlew
    - gradlew.bat
    - local.properties
    - settings.gradle

also the top level settings.gradle has to be changed:

+ include ':app', ':MyApplication2:mylibrary'
- include ':app', ':myApplication2:mylibrary'

and app/build.gradle has to change this

+ compile project(':MyApplication2:mylibrary')
- compile project(':myApplication2:mylibrary')

Everything compiles

Be careful! Git is not case sensitive by default. Use

git mv -f myApplication2 temp
git mv -f temp MyApplication2

to rename the folder.

According to official documentation on instant run.

What happened behind the scenes is that we have updated your project’s build.Gradle file to use the latest version of the Android Gradle plug-in, which is required for Instant Run to work. We also update your Gradle wrapper version to 2.8, and attempt to update the build tools version in all your modules to the latest (23.0.2). This isn't required for Instant Run, but it will use a new faster version of dex, which helps both instant run and a full build be a bit faster.

A Snippet of Application\build.gradle is shown below:

buildscript {
   repositories {
       jcenter()
   }

   dependencies {
       classpath 'com.android.tools.build:gradle:2.0.0-alpha1'
   }
}

Known Issues Using Instant Run

Using Instant Run with Reflection

Reflection could show unexpected things, for example:

• Classes are all made public
• Many other things are also made public

Limitations with Performance Profiling

We suggest temporarily disabling Instant Run while profiling your debug application.

There is a very small performance impact when using Instant Run, and a slightly larger impact when methods are overridden.

Increases in App Methods

Instant Run adds some methods–140 plus three times the number of classes in your app and its local dependencies. If the app was previously just below the dex limit, enabling Instant Run may push your app over the dex limit. Learn how to fix this by Optimizing Multi dex Development Builds.

Other Known Issues

• Intermittent issues may occur where the IDE loses connection with the app which will trigger a full rebuild.
• Third party Gradle plugin compatibility has not yet been tested, especially those that have not been updated to use the new transforms API.
• Data-binding is currently broken in this build (capability to be restored).

so if you are facing this issue then you can turn off you instant run

go to Settings → Build, Execution, Deployment → Instant Run and uncheck Enable Instant Run… .

Better understanding of instant run go here

Take your dependencies out of your top level build gradle. As it is you are creating a classpath with your top level gradle and then attempting to overwrite it with your other build.gradles

From:

buildscript {
repositories {
    mavenCentral()
    jcenter()
    maven { url 'https://maven.fabric.io/public' }
}

dependencies {
    classpath 'com.android.tools.build:gradle:2.0.0-alpha6'
    classpath 'com.novoda:bintray-release:0.2.7'
    classpath 'io.fabric.tools:gradle:1.+'
}}

To: Note I did not add that commented line, Android-Studio does this automatically

buildscript {
    repositories {
        jcenter()
    }   
    dependencies {
        classpath 'com.android.tools.build:gradle:2.0.0-alpha6'

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

allprojects {
    repositories {
        jcenter()
    }
}

You should be able to add any needed Maven repositories into your separate app gradles, as they should be specific and the jcenter would cover many of these, as @AndroidMechanic, and @Hi I'm Frogatto have been trying to say in previous answers and comments. Have a look at read here Bintray - JCenter

The other thing is, I do not understand why you are managing your libraries build gradle within your project as part of your project. You should be referencing your library from your project, with the app build.gradle. You are treating the library gradle as the app gradle.

dependencies {
    compile fileTree(include: '*.jar', dir: 'libs')
    compile 'com.android.support:support-v4:23.1.0'
    compile 'com.android.support:appcompat-v7:23.1.0'

    testCompile 'junit:junit:4.12'

}

Make these changes, then see what duplicates and you can manage that from there.

Also, I recommend manually syncing project with gradle files when changes are made. I would not rely on instant anything, it's important to make changes step wise and take stock of what's occurring, particularly when it won't compile. That's my opinion only and one way to program in android.

If instant run creates havoc with a particular project, I would disable it for that project. It is enabled by default and I've had no issues with it. The build mess may be the result of unclear gradles in your project to begin with.

Also:

In gradle wrapper properties, grade 2.10 is required for classpath 'com.android.tools.build:gradle:2.0.0-alpha6':

distributionUrl=https\://services.gradle.org/distributions/gradle-2.10-all.zip

See here for latest updates Android Tools Project Site

Or you can install a previous version of Android Studio and use the previous working version of your project.

If you have multiple git files, I suggest you remove the redundant ones, keep only the ones you are using for version control.