Unable to resolve dependency for ':app@debug/compileClasspath': Could not resolve

Question

Newly installed Android studio 3.1.3 is giving strange dependencies error when making a new project and compiling for very first time.

A similar question that didn't help resolve the problem.

Event Logs:

Unable to resolve dependency for ':app@debug/compileClasspath': Could not resolve com.android.support:appcompat-v7:28.0.0-alpha3.
Open File
Show Details


Unable to resolve dependency for ':app@debug/compileClasspath': Could not resolve com.android.support.constraint:constraint-layout:1.1.2.
Open File
Show Details


Unable to resolve dependency for ':app@debugAndroidTest/compileClasspath': Could not resolve com.android.support:appcompat-v7:28.0.0-alpha3.
Open File
Show Details


Unable to resolve dependency for ':app@debugAndroidTest/compileClasspath': Could not resolve com.android.support.constraint:constraint-layout:1.1.2.
Open File
Show Details


Unable to resolve dependency for ':app@debugUnitTest/compileClasspath': Could not resolve com.android.support:appcompat-v7:28.0.0-alpha3.
Open File
Show Details


Unable to resolve dependency for ':app@debugUnitTest/compileClasspath': Could not resolve com.android.support.constraint:constraint-layout:1.1.2.
Open File
Show Details


Unable to resolve dependency for ':app@release/compileClasspath': Could not resolve com.android.support:appcompat-v7:28.0.0-alpha3.
Open File
Show Details


Unable to resolve dependency for ':app@release/compileClasspath': Could not resolve com.android.support.constraint:constraint-layout:1.1.2.
Open File
Show Details


Unable to resolve dependency for ':app@releaseUnitTest/compileClasspath': Could not resolve com.android.support:appcompat-v7:28.0.0-alpha3.
Open File
Show Details


Unable to resolve dependency for ':app@releaseUnitTest/compileClasspath': Could not resolve com.android.support.constraint:constraint-layout:1.1.2.
Open File
Show Details

ScreenShot:

this problem happened to me several times and forcing https or http didn't resolve it either

Answer 1

You might be importing Application instead of Module. Well you can change it in module's gradle also.

Change

apply plugin: 'com.android.application'

to

apply plugin: 'com.android.library'

You also need to remove applicationId from the gradle.

Answer 2

I just figured out how to remove this gradle error, follow the following steps.

1. Go to "File".
2. Click on Invalidate Cache/ Restart.
3. Again click on Invalidate Cache / Restart(On dialoge window).

Let the gradle build without any interruption.

Thank You! Regards, hope this will help.

Answer 3

I think the problems comes from the following: The internet connection with u was unavailable so Android Studio asked you to enable the "offline work" and you just enabled it

To fix this:

• File
• Settings
• Build, Execution, Deployment
• Gradle
• Uncheck offline work

why might unchecking the offline work solves the problem, because in the Gradle sometimes some dependencies need to update (the ones containing '+'), so internet connection is needed.

Answer 4

1. Try "File"->"Invalidate Caches / Restart ..."
2. Try to clean up your .gradle and .idea directory under your project root directory.

3. Try to add Google Maven repository and sync project

   buildscript {
       repositories {
           jcenter()
           google()
           maven {
              url "https://maven.google.com"
           }
       }
   
       dependencies {
           classpath 'com.android.tools.build:gradle:3.1.3'
       }
   }
   
   allprojects {
       repositories {
           google()
           jcenter()
           maven {
              url "https://maven.google.com"
           }
       }
   }
   

4. If you are using Android Gradle Plugin 3.1.3, you should be sure that your gradle wrapper version is 4.4. Under the root directory of your project, find gradle-wrapper.properties and modify it as below.

   distributionBase=GRADLE_USER_HOME
   distributionPath=wrapper/dists
   zipStoreBase=GRADLE_USER_HOME
   zipStorePath=wrapper/dists
   distributionUrl=https\://services.gradle.org/distributions/gradle-4.4-all.zip