I am not able to sync my project with the gradle?

Issue

I have tried importing my project and even updated the android studio and Gradle. But I am not able to sync the Gradle with the project. Please help.

These are the error messages in the log- ERROR: Failed to resolve: com.android.support.constraint:constraint-layout:1.1.3 Add Google Maven repository and sync project Show in Project Structure dialog Affected Modules: app

ERROR: Failed to resolve: com.android.support:appcompat-v7:23.3.0 Add Google Maven repository and sync project Show in Project Structure dialog Affected Modules: app

ERROR: Failed to resolve: com.android.support:support-v4:23.3.0 Add Google Maven repository and sync project Show in Project Structure dialog Affected Modules: app

ERROR: Failed to resolve: com.android.support:design:23.3.0 Add Google Maven repository and sync project Show in Project Structure dialog Affected Modules: app

And the error message in the event log- NDK Resolution Outcome: Project settings: Gradle model version=5.4.1, NDK version is UNKNOWN

Solution

you need to add Google's Maven repository to your project's build.gradle file as described here: https://developer.android.com/topic/libraries/support-library/setup.html

allprojects {
        repositories {
            jcenter()
            maven {
                url "https://maven.google.com"
            }
        }
    }

For Android Studio 3.0.0 and above:

allprojects {
        repositories {
           google()
           jcenter()
           mavenCentral()
           maven { url "https://jitpack.io" }
        }
    }

Answered By - Jaspalsinh Gohil