Gradle Sync failed could not find constraint-layout 1 0 0-alpha2

Question

Problem    Error Could not find com android support constraint constraint-layout 1 0 0-alpha2  Required by  myapp app unspecified   Background   Android Studio 2 2 P 1

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gradle com android tools build gradle 2 2 0-alpha6   constraint layout dependency com android support constraint constraint-layout 1 0 0-alpha4   works for me

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Just as a heads up to those still searching for this  ConstraintLayout 1 0 1 and lower have been deprecated by maven  For a list of available constraint layouts that can be downloaded  see below  https   maven google com web index html q Constrain com android support constraint constraint-layout The easiest solution at the moment  is to change implementation  com android support constraint constraint-layout 1 0 0-beta1  to implementation  com android support constraint constraint-layout 1 0 2

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In my case  that support libraries for ConstraintLayout were installed  but I was adding the incorrect version of ConstraintLayout Library in my build gradle file  In order to see what version have you installed  go to Preferences   Appearance  amp  Behavior   System Settings   Android SDK  Now  click on SDK Tools tab in right pane  Check Show Package Details and take note of the version     Finally you can add the correct version in the build gradle file  dependencies       compile fileTree dir   libs   include      jar        compile  com android support constraint constraint-layout 1 0 0-alpha9      testCompile  junit junit 4 12

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I updated my android gradle plugin to 2 2 0-alpha4 and constraint layout dependency to 1 0 0-alpha3 and it seems to be working now

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Just to make sure that in studio version 2 3 you won t see a dropdown near constraint-layout in sdk tools  it will by default install the latest version  To get the desired version check the box saying show package details and boom you can now choose the desired version you want to install

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In my case  I had to remove the previous versions first and download the latest one instead  v1 0 stable was released on Feb 23rd

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Its available in androidx as following package  implementation  androidx constraintlayout constraintlayout 2 0 0-alpha1

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Support libraries for ConstraintLayout could not be installed updated    Just open Preferences   Appearance  amp  Behavior   System Settings   Android and move to SDK Tools tab  Check the following fields and install

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Not sure if I m too late  but in case someone has still the error after an update of ConstraintLayout and Solver over the SDK Tools  maybe this solution could help  Error  30  13  Failed to resolve  com android support constraint constraint-layout 1 0 0-alpha4

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First I tried everything that I have read on stackoverflow   from updating gradle to XY version  to updating ConstraintLayout to XY version   I even update my SDK tools and Android Studio to the latest version   but nothing was working   The only solution that worked for me was that I delete ConstraintLayout library from gradle and SDK  then I opened random xml layout and in Design view under Palette section search for ConstraintLayout  If you have successfully deleted library from your project then you will be able to install the library from there if you double clicked on ConstraintLayout element   That has create next line in my app build gradle    com android support constraint constraint-layout 1 0 0-beta1    In my project build gradle I have this   classpath  com android tools build gradle 2 2 2    Android studio version 2 2 2

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In my case  I was using AS 2 3 and I wanted to use the currently latest ConstraintLayout 1 1 3  but the latest version in my Preferences   Appearance  amp  Behavior   System Settings   Android was 1 0 2   To use ConstraintLayout 1 1 3  I updated my AS from 2 3 to currently latest 3 2 1  com android tools build gradle from 2 2 2 to 3 2 1  gradle from 3 3 to 4 6 and buildToolsVersion from 25 0 0 to 28 0 3    I also added maven   url  https   maven google com    to the Maven repositories in the project-level build gradle file and that solved my problem

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In my case  I had a multi-module project called  app  and  sdk    The  sdk  module is the one where I had added the constraint layout library   I got the error when I tried to incorporate  sdk  into a new multi-module project called  app2    The solution was to ensure I had added the Google Maven Repository to the project-level build gradle file for  app2    The Google Maven Repository can be added by putting  google    under allprojects repositories in the project-level build gradle file   allprojects       repositories           jcenter           google

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I used com android support constraint constraint-layout 1 0 0-alpha2 with classpath  com android tools build gradle 2 1 0   it worked like charm

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My problem was  that the SDK Tools updated it to the latest version  in my case it was 1 0 0-alpha9  but in my gradle dependency was set to  compile  com android support constraint constraint-layout 1 0 0-alpha8  So  you can change your gradle build file to  compile  com android support constraint constraint-layout 1 0 0-alpha9  Or you check  Show package details  in the SDK Tools Editor and install your needed version  See screenshow below  Image of SDK Tools

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Similar issue solved by Reinstalling Android Studio

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Update your constraint layout dependency to the relevant version from  1 0 0-alpha2   In my case  I changed to the following  compile  com android support constraint constraint-layout 2 0 0-alpha5

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Ensure you have the maven google com repository declared in your module-level build gradle file  repositories             maven                   url  https   maven google com                      2 Add the library as a dependency in the same build gradle file   dependencies         compile  com android support constraint constraint-layout 1 0 2

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While updating SDK tools  a dilog box presented with Constraint layout version that is going to get installed  Note that and update your dependency based on that  In my case it was installing beta3    I changed my dependency like below  After that it worked   compile  com android support constraint constraint-layout 1 0 0-beta3

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i m try constraint layout dependency update available 1 and plugin gradle alpha-6 it worked

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For me it was a completely different issue  When I installed constraint dependancy in SDK tools  the tools somehow wrote them into the wrong directory  That is  home   USER  Android Sdk extras  m2repository  com     constraint instead of  home   USER  Android Sdk extras  android   m2repository  com     constraint  Remedy  Just copy the 1 0 0-alpha  directories into the latter path

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Alpha version is no longer available     implementation  com android support constraint constraint-layout 1 1 3

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The fix is to update the android gradle plugin in your build gradle   This should work  classpath  com android tools build gradle 2 2 0-alpha2   Or you can use the latest  classpath  com android tools build gradle 2 2 0-alpha3

[android] Gradle Sync failed could not find constraint-layout:1.0.0-alpha2

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