Could not resolve com.android.support:appcompat-v7:26.1.0 in Android Studio new project

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I know about this questions:

Failed to resolve: com.android.support:cardview-v7:26.0.0 android

Could not resolve com.android.support:appcompat-v7:26.1.0 [duplicate]

And I've read this documentations:

Migrate to Android Plugin for Gradle 3.0.0

Migrating to Android 8.0

So I'm posting this question believing its not a duplicate.

I've installed Android Studio 3.0.1. I didn't have any previous version before and I started a new project.

Every setting in Gradle file have been set by Android Studio itself and I've checked them all.

These are the file contents:

build.gradle (Module:app)

    apply plugin: 'com.android.application'

    android {
        compileSdkVersion 26
        defaultConfig {
            applicationId "com.example.administrator.as301test"
            minSdkVersion 16
            targetSdkVersion 26
            versionCode 1
            versionName "1.0"
            testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner"
        }
        buildTypes {
            release {
                minifyEnabled false
                proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
            }
        }
    }

    dependencies {
        implementation fileTree(dir: 'libs', include: ['*.jar'])
        implementation 'com.android.support:appcompat-v7:26.1.0'
        implementation 'com.android.support.constraint:constraint-layout:1.0.2'
        implementation 'com.android.support:design:26.1.0'
        testImplementation 'junit:junit:4.12'
        androidTestImplementation 'com.android.support.test:runner:1.0.1'
        androidTestImplementation 'com.android.support.test.espresso:espresso-core:3.0.1'
    }

Top level build.gradle

buildscript {

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


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

allprojects {
    repositories {
        google()
        jcenter()
    }
}

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

gradle-wrapper.properties

distributionBase=GRADLE_USER_HOME
distributionPath=wrapper/dists
zipStoreBase=GRADLE_USER_HOME
zipStorePath=wrapper/dists
distributionUrl=https\://services.gradle.org/distributions/gradle-4.1-all.zip

I use google() in repositories as here clearly says:

  // If you're using a version of Gradle lower than 4.1, you must instead use:
     // maven {
     //     url 'https://maven.google.com'
     // }

My gradle version is 4.1 so I don't need above code.

But I still get this error as the others have been asking about:

Error:Unable to resolve dependency for ':app@debug/compileClasspath': Could not resolve com.android.support:appcompat-v7:26.1.0.

Why should I get this error when I'm creating a new project in AS 3.0.1 and it has been set all the necessary settings?

Update

@Rohit's answer somehow solved the issue but I still get same error for some other dependencies.

Could not resolve com.android.support.test:runner:1.0.1

Could not resolve com.android.support.test.espresso:espresso-core:3.0.1

Could not resolve junit:junit:4.12

android-studio-3.0 android-gradle-plugin android
14 Answers

try this : 

android {
    compileSdkVersion 26
    buildToolsVersion "26.0.1"
defaultConfig {

        targetSdkVersion 26
    }

}


compile 'com.android.support:appcompat-v7:25.1.0'

It has worked for me

user_51238940

Your android studio may be forgot to put : buildToolsVersion "26.0.0" you need 'buildTools' to develop related design and java file. And if there is no any buildTools are installed in Android->sdk->build-tools directory then download first.

user_89692510

This work for me. In the android\app\build.gradle file you need to specify the following

compileSdkVersion 26
buildToolsVersion "26.0.1"

and then find this

compile "com.android.support:appcompat-v7"

and make sure it says

compile "com.android.support:appcompat-v7:26.0.1"
user_44651180

OK It's A Wrong Approach But If You Use it Like This :

compile "com.android.support:appcompat-v7:+"

Android Studio Will Use The Last Version It Has.

In My Case Was 26.0.0alpha-1.

You Can See The Used Version In External Libraries (In The Project View).

I Tried Everything But Couldn't Use Anything Above 26.0.0alpha-1, It Seems My IP Is Blocked By Google. Any Idea? Comment

user_73776310

In my case, this error occur when i tried to use gridView

I resolved it by removing this line from build.grade(Module) file

implementation 'com.android.support:gridlayout-v7:28.0.0-alpha3'
user_99303370

Try to clear cache in android studio by File-> Invalidate cache -> invalidate after invalidating build-> clean project Then you can able to build the project

user_97737110

this work for me 

compile 'com.android.support:appcompat-v7:26.0.0'

change 26.0.0 to 26.0.1

compile 'com.android.support:appcompat-v7:26.0.1'
user_65074280

this work for me. add configurations.all in app/build.gradle

android {
    configurations.all {
        resolutionStrategy.force 'com.android.support:support-annotations:27.1.1'
    }
}
user_67821190
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