Error:Failed to resolve: com.android.support:support-annotations:27.0.1 - Android Studio [duplicate]

Question

i try to add recyclerview to my project and get this error appear and i added it from android studio dependencies

Answer 1

Starting from version 26 of support libraries make sure that the repositories section includes a maven section with the "https://maven.google.com" endpoint.

Something like;

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

Answer 2

This is how I have it working.

1. Add maven { url "https://maven.google.com" } as @Gabriele_Mariotti suggests above.

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

2. Then on the build.gradle file inside the App folder add

   compileSdkVersion 26
   buildToolsVersion "25.0.3"
   defaultConfig {
       applicationId "com.xxx.yyy"
       minSdkVersion 16
       targetSdkVersion 26
   }
   

3. Then on the dependencies use

   dependencies {
       compile 'com.android.support:appcompat-v7:26.0.1'
       compile 'com.android.support:design:26.0.1'
       compile 'com.google.android.gms:play-services-maps:11.0.4'
       compile 'com.google.android.gms:play-services-location:11.0.4'
       compile 'com.mcxiaoke.volley:library-aar:1.0.0'
       compile 'com.android.support:cardview-v7:26.0.1'
   }
   

Answer 3

If you are using Android Studio 3.0 or above make sure your project build.gradle should have content similar to-

buildscript {                 
    repositories {
        google()  // add google() before jcenter()
        jcenter()
    }
    dependencies {            
        classpath 'com.android.tools.build:gradle:3.0.1'

    }
}

allprojects {
    repositories {
        google()  // add google() before jcenter()
        jcenter()
    }
}

And for below Android Studio 3.0 and starting from support libraries 26.+ your project build.gradle must look like this-

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

Note- position really matters add google() before jcenter()

check these links below for more details-

1- Building Android Apps

2- Add Build Dependencies

3- Configure Your Build

Answer 4

Just add this to your main all project level build.gradle file under allprojects()

 maven {
    url "https://maven.google.com"
 }

Answer 5

I face the same problem while I have updated my SDK and Android studio version(3.0 beta). I have solved this problem going through this tutorial. In this they told us to update are build configuration file like

android {
   compileSdkVersion 26
   buildToolsVersion '26.0.0'
   defaultConfig {
   targetSdkVersion 26
  }
  ...
}

dependencies {
   compile 'com.android.support:appcompat-v7:26.0.0'
}

// REQUIRED: Google's new Maven repo is required for the latest
// support library that is compatible with Android 8.0
repositories {
   maven {
       url 'https://maven.google.com'
       // Alternative URL is 'https://dl.google.com/dl/android/maven2/'
   }
}

Hope it will help you out.

Answer 6

in may case I found OneSignal changed their dependencies

so I changed it from

compile 'com.onesignal:OneSignal:[3.5.8, 3.99.99]'

to

compile 'com.onesignal:OneSignal:[3.5.8, 3.5.8]'

then it works, please check any unspecific dependency.

Answer 7

Add this to the project level build.gradle file and it should work fine.

allprojects {
    repositories {
        google() // this is to be added if there's something already.
        jcenter()
    }
}

Answer 8

Google's new Maven repo is required for the latest support library that is compatible with Android 8.0. Just update your Google's Maven repository like below:

To add them to your build, add maven.google.com to the Maven repositories in your module-level build.gradle file:

repositories {
    maven {
        url 'https://maven.google.com'
        // Alternative URL is 'https://dl.google.com/dl/android/maven2/'
    }
}

Alternative you can update build.gradle file like this:

    repositories {
        jcenter()
        google()
    }

Then add the desired library to your dependencies block. For example, the cardview library looks like this:

dependencies {
    compile 'com.android.support:cardview-v7:26.1.0'
}

Answer 9

in sdk 28 u can use

implementation 'com.android.support:design:28.0.0'

and remove cardView library