Develop Reference

How to run "Watchface for wearos" codelab?

I am new to Android and WearOS and also to Gradle, and I just want to follow along this Codelab:
https://codelabs.developers.google.com/codelabs/watchface/index.html#0
So I downloaded Android Studio and imported the project
https://github.com/googlecodelabs/watchface
but when compiling I just get the error
Failed to resolve: com.google.android.support:wearable:2.0.0
I already tried to change SDK Versions and other things, but it didn't help.
I'm pretty sure it's just a few version settings, but I have no idea where to look.
Did anyone maybe complete this codelab and made it run with the "actual" version of AndroidStudio?
thanks,
Thorsten

The code on github was last updated in May 2017, which is a shame, as it is a useful introduction to watchfaces. A number of things have changed since then. There is even a pull request on github with gradle updates from Nov 2018, but it hasn't been merged.
Your 'Failed to resolve' error is likely related to Google now providing some packages in their own Maven repository, in addition to jcenter.
This can be fixed by adding google() to the repositories closures in the Package build.gradle file:
buildscript {
repositories {
jcenter()
google()
}
dependencies {
classpath 'com.android.tools.build:gradle:4.0.2'
}
}
allprojects {
repositories {
jcenter()
google()
}
}
The version of the gradle plugin has been changed to 4.0.2 above too, so also update the file gradle-wrapper.properties with:
distributionUrl=https\://services.gradle.org/distributions/gradle-6.1.1-all.zip
Gradle should now build, but it may still log some warnings or errors in the Build window which you can open at the bottom of Android Studio.
The gradle dependency keyword 'provided' has been replaced with 'compileOnly' and 'compile' with 'implementation'. Shift+Ctrl+R in Android Studio will enable you to easily do the replacement project-wide.
It should also be useful for updating compileSdkVersion and targetSdkVersion (to 30) and buildToolsVersion (to 30.0.2) in all the module build.gradle files.
The package versions are out of date, with the wearable ones currently at 2.8.1 and play-services-wearable at 17.0.0. Ctrl+Alt+Shift+S takes you to 'Suggestions' in 'Project Structure', which can help you in future to stay current.
The last problem is that the Android Support Library has been obsoleted in favor of jetpack/androidx. See the old reference.
In this project, it is only a problem in the build.gradle of module 5-palette. You may replace 'com.android.support:palette-v7:23.3.0' with 'androidx.palette:palette:1.0.0'. See Jetpack Artifact Mappings. You then need to change the import statement in MyWatchFaceService.java.
Finally add the following line to gradle.properties:
android.useAndroidX=true

ERROR: File google-services.json is missing. (Since com.google.gms:google-services updated from 4.2.0 to 4.3.0)

Since I updated com.google.gms:google-services from version 4.2.0 to 4.3.0 in my top level build.gradle, I cannot compile my project any more because I have the error :
"File google-services.json is missing"
My google-services.json are in :
/My/personnal/project/app/src/ProductFlavors/BuildTypes
(for example)
/My/personnal/project/app/src/AT/debug
/My/personnal/project/app/src/DE/debug
/My/personnal/project/app/src/AT/release (...)
When my version is 4.2.0, I have no issue but in 4.3.0 I have the error and the Searched Location is:
/My/personnal/project/app/google-services.json
not working
dependencies {
classpath 'com.android.tools.build:gradle:3.4.2'
classpath 'com.google.gms:google-services:4.3.0'
}
working
dependencies {
classpath 'com.android.tools.build:gradle:3.4.2'
classpath 'com.google.gms:google-services:4.2.0'
}
EDIT 1
Looks like it has been resolved with version 4.3.1
EDIT 2
Looks like issue is back on version 4.3.2 :(
EDIT 3
Issue still there with 4.3.3 :(

There is already an open issue on github based on this
https://github.com/google/play-services-plugins/issues/91
The problem is google-services plugin ignores the build variant if it starts with a capital letter.
If you refactor the build variant names to camelCase, then it seems to detect the google-services.json file.

Add this line at the bottom of your app build.gradle file and not at the top.
apply plugin: 'com.google.gms.google-services'

You need to get the configuration file from the developer's site and paste it in the app level directory of your project.
Generate file here developers.google.com/mobile/add

Android Studio 3.2 - Could not find com.android.tools.build:aapt2:3.2.0-4818971

I was following a tutorial to develop icon pack for android and when I imported the project I got several errors and it was solved here - Gradle Version 4.6 - Absolute path are not supported when setting an output file name
After solving that error, the following error poped up.
Could not find com.android.tools.build:aapt2:3.2.0-4818971.
Searched in the following locations:
file:/C:/Users/Tomin Jacob/AppData/Local/Android/Sdk/extras/m2repository/com/android/tools/build/aapt2/3.2.0-4818971/aapt2-3.2.0-4818971.pom
file:/C:/Users/Tomin Jacob/AppData/Local/Android/Sdk/extras/m2repository/com/android/tools/build/aapt2/3.2.0-4818971/aapt2-3.2.0-4818971-windows.jar
file:/C:/Users/Tomin Jacob/AppData/Local/Android/Sdk/extras/google/m2repository/com/android/tools/build/aapt2/3.2.0-4818971/aapt2-3.2.0-4818971.pom
file:/C:/Users/Tomin Jacob/AppData/Local/Android/Sdk/extras/google/m2repository/com/android/tools/build/aapt2/3.2.0-4818971/aapt2-3.2.0-4818971-windows.jar
file:/C:/Users/Tomin Jacob/AppData/Local/Android/Sdk/extras/android/m2repository/com/android/tools/build/aapt2/3.2.0-4818971/aapt2-3.2.0-4818971.pom
file:/C:/Users/Tomin Jacob/AppData/Local/Android/Sdk/extras/android/m2repository/com/android/tools/build/aapt2/3.2.0-4818971/aapt2-3.2.0-4818971-windows.jar
https://jcenter.bintray.com/com/android/tools/build/aapt2/3.2.0-4818971/aapt2-3.2.0-4818971.pom
https://jcenter.bintray.com/com/android/tools/build/aapt2/3.2.0-4818971/aapt2-3.2.0-4818971-windows.jar
https://jitpack.io/com/android/tools/build/aapt2/3.2.0-4818971/aapt2-3.2.0-4818971.pom
https://jitpack.io/com/android/tools/build/aapt2/3.2.0-4818971/aapt2-3.2.0-4818971-windows.jar
Required by:
project :licensing
I tried to open the URLs and I was able to download JAR (aapt2-3.2.0-4818971-windows.jar) and JSON (aapt2-3.2.0-4818971.pom.json) files from the first 2 URLs. Should I copy these files somewhere? What should I do to solve this error?

Most likely you do not have the Google repository in your project's build.gradle file. Add google() in BOTH locations as shown below:
buildscript {
repositories {
google()
jcenter()
}
dependencies {
classpath 'com.android.tools.build:gradle:3.2.0'
}
}
allprojects {
repositories {
google()
jcenter()
}
}

I was able to solve the issue by adding google() in both locations:
File -> Project Structure -> Project -> *Now add ", google()" in
Android Plugin Repository
and
Default Library Repository
*

When you upgrade to 4.6 version of gradle. You need following upgrades too. Gradle Plugin Release page.
1. Android Studio 3.+
You need Android Studio version 3.+ to have 4.6 version of gradle. At the time of post latest release was 3.2.1. You can see latest release on this page.
2. Gradle Plugin 3.1.+
You need 3.1.+ gradle plugin for gradle-4.6 support. Check in project level build.gradle.
classpath 'com.android.tools.build:gradle:3.2.1'
At the time of post latest version was 3.2.1. You can see latest release here.
3. Add Google Maven Library
You need to add Google Maven library to project level build.gradle like below code.
buildscript {
repositories {
google()
...
}
dependencies {
classpath 'com.android.tools.build:gradle:3.2.1'
...
}
}
allprojects {
repositories {
google()
...
}
}

see the dependencies of module :licensing and use com.android.tools.build:aapt2:3.2.0 (or even "com.android.tools.build:aapt2:3.2.0:windows") there, which is the final version ...that 4818971 version should ordinary come with an alpha prefix/suffix (the version number seems to be incorrect). maybe adding repository google() might be required, too. ordinary, that dependency should be present; removing that dependency might be another possible option.

For those people who still face exactly the same problem even after adding two google to BOTH positions in relevant gradle file.I would suggest you to check Android Studio -> Preferences -> HTTP Proxy page.
If you find it says some warnings like "...have set JVM proxy to 127.0.0.1".Then you should consider vpn-related issues which depends on your context.
If your desktop is MacOS, then go to Network setting page, advance->proxy tab,uncheck all the checkbox there.
Back to your IDE as following steps: Android Studio->File->Invalidate Caches/Restart.After that,go back to check Android Studio -> Preferences -> HTTP Proxy page again,previous warnings should be gone.Run again.

I solved my issue by upgrading my classpath from
'com.google.gms:google-services:4.0.0
to
'com.google.gms:google-services:4.2.0'
hope this helps

Android - PLUGIN IS TOO OLD,PLEASE UPDATE TO A MORE RECENT VERSION OR SET ANDROID_DAILY_OVERRIDE

I have just updated my android studio. The current version is Android Studio 2.0 Preview 6. However I am getting the message described in the title of this post.
I tried to play with the gradle version inside the dependecies of the gradle file,but nothing happens. Here is my file.
// Top-level build file where you can add configuration options common to all sub-projects/modules.
buildscript {
repositories {
jcenter()
}
dependencies {
classpath 'com.android.tools.build:gradle:2.0.0-alpha6'
// NOTE: Do not place your application dependencies here; they belong
// in the individual module build.gradle files
}
}
allprojects {
repositories {
jcenter()
}
}
task clean(type: Delete) {
delete rootProject.buildDir
}
Is there any specific value of gradle that I should put,in order to fix the problem? Some people fixed it by using the version of gradle:1.5.0.
Thanks

Here is the full answer from my comments.
You need to use the same version of gradle for all submodules of your project.
You can see a list of submodules by choosing "Android" presentation in you Project View and expand "Gradle Scripts" section. You will see all build.gradles that are included into your project.

As of April 22nd, 2016 the latest beta version became
classpath 'com.android.tools.build:gradle:2.1.0-rc1'
And on June 3rd a stable 2.1.2 version was released which gives you the option to use
classpath 'com.android.tools.build:gradle:2.1.2'

Other answers here are correct but out of date, because this question does not get as much traffic.
This error indicates you are using a development environment that is far enough out of date that it could cause weird side effects, the solution is of course to upgrade to a more recent version.
When you use development versions, the error will reoccur as soon as your version is far enough behind the current version, which is why seasia's answer stopped working
I've been keeping an up-to-date list of the most current versions as well as the stable version on my answer to this similar question, so that I can fix it each time I get a new warning:
Android Studio 2.0 - Plugin is too old, please update to a more recent version, or set ANDROID_DAILY_OVERRIDE

Android Studio 2.0 - Plugin is too old, please update to a more recent version, or set ANDROID_DAILY_OVERRIDE environment variable to

I updated the Android Studio version 2.0 and was using normally. When I created a new project today, it is displaying the error Plugin is too old, please update to a more recent version, or set ANDROID_DAILY_OVERRIDE environment variable to
I realized that this problem occurs only when I create a new project. In previous projects developed, the problem does not occur and I realized that gradle is different
classpath 'com.android.tools.build:gradle:1.3.0'.
I have to update with the same set of old projects?
My app/build.gradle
apply plugin: 'com.android.application'
android {
compileSdkVersion 23
buildToolsVersion "23.0.2"
defaultConfig {
applicationId "luizugliano.com.br.teste"
minSdkVersion 16
targetSdkVersion 23
versionCode 1
versionName "1.0"
}
buildTypes {
release {
minifyEnabled false
proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
}
}
}
dependencies {
compile fileTree(dir: 'libs', include: ['*.jar'])
testCompile 'junit:junit:4.12'
compile 'com.android.support:appcompat-v7:23.1.1'
compile 'com.android.support:design:23.1.1'
}
My build.gradle (Project)
// Top-level build file where you can add configuration options common to all sub-projects/modules.
buildscript {
repositories {
jcenter()
}
dependencies {
classpath 'com.android.tools.build:gradle:2.0.0-alpha1'
// NOTE: Do not place your application dependencies here; they belong
// in the individual module build.gradle files
}
}
allprojects {
repositories {
jcenter()
}
}
task clean(type: Delete) {
delete rootProject.buildDir
}

UH OH, Google Notice: "This website no longer provides downloads for Android Studio."
(Old 'channel' links no longer work. Links in this answer have been updated to the new formats, make sure to change your bookmarks if you were using them)
You need to update the version of the gradle tools you are building with. This can be found inside the dependencies section of your build.gradle. You have 3 options you can update to:
The latest stable version referenced in the release channel as of 2nd March, 2017 is
classpath 'com.android.tools.build:gradle:2.3.0'
Or the latest beta version via preview channel as of 15th February, 2017 is
classpath 'com.android.tools.build:gradle:2.3.0-beta4'
And the latest alpha version also from the preview channel as of 21st March, 2017 gives you the option to use
classpath 'com.android.tools.build:gradle:2.4.0-alpha3'
Updating requires you to also upgrade the gradle wrapper. As of 20th February '17, the newest is:
distributionUrl=https\://services.gradle.org/distributions/gradle-3.4-all.zip
On android studio you can find your wrapper by changing to the project view and looking in gradle/wrapper/gradle-wrapper.properties
Sometimes after changing wrapper the project will fail to compile with an error like “Minimum supported Gradle version is 2.14.1. Current version is 2.10. Try changing Gradle distribution version to...” despite already having the correct version in gradle-wrapper.properties. If that happens try the following:
Go to Settings > Build, Execution, Deployment > Gradle
Under Project-level settings ensure that Use default gradle wrapper (recommended) is the selected option, then re-build your project.
(Additional Note: With regards to the alpha and beta versions - there is not always a newer build than the stable version when I check, in those cases I've just given values for the previous version. This allows you to roll back to that version if you experience issues with the released version)

In new project change this part:
dependencies {
classpath 'com.android.tools.build:gradle:2.0.0-alpha1'
with
dependencies {
classpath 'com.android.tools.build:gradle:1.5.0'.
If you're not experienced user, please stick with Android Studio's Updates Stable Channel. I suppose you got Android Studio from Canary Channel.
Note that:
The Canary Channel for Android Studio delivers the bleeding edge updates on a roughly weekly basis. While these builds do get tested,
they are still subject to bugs, as we want people to see what's new as
soon as possible.
From: http://tools.android.com/download/studio/canary
You don't need to change dependencies of your older projects. They should run normally on the latest version.

Same problem on update.
this Fixed it for me:[build.gradle]
classpath 'com.android.tools.build:gradle:2.0.0-alpha3'
or
classpath 'com.android.tools.build:gradle:2.0.0-beta2'

Just in Advanced System Settings in Windows Properties, add a new environment variable with the name ANDROID_DAILY_OVERRIDE and the given value in error message. Restart android studio and you will be ready to go

As of April 5, 2016 this worked for me:
classpath 'com.android.tools.build:gradle:2.0.0-rc3'

gradle version you need became
classpath 'com.android.tools.build:gradle:2.0.0-beta7'
Which requires you to use the gradle wrapper for 2.10 if you were still using previous version
distributionUrl=https\://services.gradle.org/distributions/gradle-2.10-all.zip
On android studio you can find your wrapper by changing to the project view and looking in gradle/wrapper/gradle-wrapper.properties

classpath: com.android.tools.build:gradle:+
This will solve the problem by updating gradle to latest one.
However it is dangerous(will code in alpha stage) & will also give warnings.

If you are using Android Studio 2.0 Preview I can suggest using 'beta' updates channel instead of 'stable'. It will allow you to receive latest gradle configuration changes. You can change updates channel in Settings - Appearance & Behavior - System Settings - Updates. Select Automatically check updates for [Beta Channel]
In order to know actual version of gradle classpath and distributionUrl (check Nick Caroso's answer) you can create new empty project and see these values there.

You need to change your gradle-wrapper.properties file in gradle/wrapper folder of your app, change your distributionUrl as this:
distributionUrl=http\://services.gradle.org/distributions/gradle-2.8-all.zip
Use http: or https:\ as per your requirement.
Then just clean your project and you are done!!!
Side Note :
classpath 'com.android.tools.build:gradle:2.0.0-alpha3'
is available now, if you want to use latest version.
Also you can take advantage of instant run feature of android studio using this, which is not available in gradle version below 2.0.0

Android Studio 2.0 has an update project to use instant-run. For those like me with little brains:
http://tools.android.com/tech-docs/instant-run
The current version of Android Studio 2.0 is Beta 6.

try update gradle to 2.10
for mac, tha path is Android Studio > Preferences > Builds,Execution,Deployment > Build Tools > Gradle
of course you must download gradle 2.10 before

I got the same error on 04/07/2016 with
'com.android.tools.build:gradle:2.2.0-alpha2' and gradle wrapper 2.10
then, I just changed to
'com.android.tools.build:gradle:2.2.0-alpha3'
now I have no problems.
Hope this help peple.

I have resolved this way.
Steps:
Open gradle-wrapper.properties file and change distributionUrl to https\://services.gradle.org/distributions/gradle-2.14.1-all.zip.
Open root level build.gradle and change classpath to com.android.tools.build:gradle:2.2.2.
Sync your Android studio project.
Reference screen shot:
Done.

just change
classpath 'com.android.tools.build:gradle:2.0.0-alpha '
or
classpath 'com.android.tools.build:gradle:2.1.0'

I change my classpath from 'com.android.tools.build:gradle:2.2.0-alpha4'
to classpath 'com.android.tools.build:gradle:2.2.0-alpha5'
and clicked "try_again" when the warning appears "unable to find cached classpath" you just click "sync", this worked like a breeze.

This problem occures generally when the IDE(android studio) in which project is build and the project are not in compatible gradle plug in. Please check the link below
http://tools.android.com/tech-docs/new-build-system/version-compatibility
In my case i had created a project using AS 1.0/2.0 version, and later imported in studio version new it gave me error then I opened project in older version of AS it worked.
you can also check http://tools.android.com/tech-docs/new-build-system

File -> Project Structure -> Project -> Android Plugin version = 2.2.3
Working fine of Android Studio 2.2.3