Could not resolve com android support appcompat-v7 26 1 0 in Android Studio new project

Question

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

User · Answer

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 · Answer

Just go to    File Settings Gradle  Deselect the  Offline work  box  Now you can connect and     download any necessary or missing dependencies

User · Answer

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 · Answer

This issue seems to like the following   How to resolve repository certificate error in Gradle build  Below steps may help   1  Add certificate to keystore-   Import some certifications into Android Studio JDK cacerts from Android Studio   s cacerts   Android Studio   s cacerts may be located in   your-home-directory   AndroidStudio3 0 system tasks cacerts   I used the following import command     keytool -importkeystore -v -srckeystore  src cacerts  -destkeystore  dest cacerts    2  Add modified cacert path to gradle properties-  systemProp javax net ssl trustStore  your-android-studio-directory   jre  jre  lib  security  cacerts systemProp javax net ssl trustStorePassword changeit   Ref   https   www cresco co jp blog entry 2014

User · Answer

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 · Answer

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 · Answer

I tried all of the above and nothing worked for me   Then I followed Gradle Settings   Build Execution  Deployment   Gradle   Android Studio and checked  Disable embedded Maven repository    Did a build with this checked and the problem was solved

User · Answer

Finally I fixed the problem by modifying build gradle like this   android       compileSdkVersion 26     buildToolsVersion  26 0 2       defaultConfig           minSdkVersion 16         targetSdkVersion 26          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      I ve removed these lines as these will produce more errors   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    Also I had same problem with migrating an existing project from 2 3 to 3 0 1 and with modifying the project gradle files like this  I came up with a working solution   build gradle  module app   android       compileSdkVersion 27     buildToolsVersion  27 0 1       defaultConfig           applicationId  com mobaleghan tablighcalendar          minSdkVersion 16         targetSdkVersion 27        dependencies       implementation  com android support appcompat-v7 25 1 0      implementation  com android support design 25 1 0      implementation  com android support preference-v7 25 1 0      implementation  com android support recyclerview-v7 25 1 0      implementation  com android support support-annotations 25 1 0      implementation  com android support support-v4 25 1 0      implementation  com android support cardview-v7 25 1 0      implementation  com google android apps dashclock dashclock-api 2 0 0      Top level build gradle  buildscript       repositories           google           jcenter             dependencies           classpath  com android tools build gradle 3 0 1           allprojects       repositories           google           jcenter

User · Answer

well got this answer from another site and don t want to take any credit for this but this solution works like butter   Go to File Settings Gradle  Deselect the  Offline work  box  Now you can connect and download any necessary or missing dependencies

User · Answer

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 · Answer

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 · Answer

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 · Answer

goto Android- sdk- build-tools directory make sure you have all the versions required   if not   download them   after that  goto File-- Settigs-- Build Execution Depoyment-- Gradle  choose use default gradle wapper  recommended   and untick Offline work   gradle build finishes successfully for once you can change the settings  If it dosent simply solve the problem  check this link to find an appropriate support library revision  https   developer android com topic libraries support-library revisions  Make sure that the compile sdk and target version same as the support library version  It is recommended maintain network connection atleast for the first time build  Remember to rebuild your project after doing this

User · Answer

this work for me  add configurations all in app build gradle android       configurations all           resolutionStrategy force  com android support support-annotations 27 1 1

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

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