Develop Reference

Android Error: failed to find target with hash string android-26 and similar

I have an error when I wanted to try it first google firebase android quickstart.
The gradle build is failed with the reason "failed to find target with hash string android-26". Despite I installed the required version.

In the SDK Manager, make sure SDK version 26 is installed.
Make sure that the app/build.gradle file has this line:
android {
compileSdkVersion 26
...
}
You might also want to set the targetSdkVersion to the same number, and check if intalled Build Tools version matches the one denoted in the build.gradle file. If none is there, add it, i.e.:
android {
buildToolsVersion '26.0.3'
}
Then press "Try again" at the top border of the window and wait.
Of course the same works for SDK version 27 and buildToolsVersion 27.0.1 and so forth. Just make sure installed version and referenced version do match.

Actually I find out that each time you install a new sdk or library from sdk manager you need to run "invalidate caches/restart" from the file menu. Without this one, gradle won't see the new installed libraries.
Android studio 2.3.3 from Mac.

I had the same error message, and it remained even after installing android SDK version 26 through the GUI in Android Studio (File -> Settings... -> Appearance & Behavior -> System Settings -> Android SDK). When checking with the command line tool. sdkmanager --list. It showed that version 26 was actually not installed, so i installed it this way:
cd android-sdk
sdktools/bin/sdkmanager --install "platforms;android-26" "sources;android-26"
after which my Android project compiled fine.

Failed to find Build Tools revision 23.0.1

I am trying to build my first app with react-native.
I am following these 2 tutorial:
https://facebook.github.io/react-native/docs/getting-started.html#content
https://facebook.github.io/react-native/docs/android-setup.html
I am sure that I installed all the requirements from the second link but when I try running my app with react-native run-android, I get the following error:
I executed this command while running genymotion.
This is all that I have installed in Android SDK:
I tried to install Android build tools 23.0.1 but I get this error:
What should I do?

You should install Android SDK Build Tools 23.0.1 via Android SDK. Don't forget to check Show Packages Details.

I faced the same problem and I solved it doing the following:
Go to /home/[USER]/Android/Sdk/tools
and execute:
$android list sdk -a
Which will show a list like:
Android SDK Tools, revision 24.0.2
Android SDK Platform-tools, revision 23.0.2
Android SDK Platform-tools, revision 23.0.1
... and many more
Then, execute the command (attention! at your computer the third option may be different):
$android update sdk -a -u -t 3
It will install the 23.0.1 SDK Platform-tools components.
Try to build your project again.

Either install v23.0.1 of the build tools (the fifth row in your screenshot), or change your code to use the build tools version you already have installed (v23.0.3). This can be specified in your app's build.gradle file:
android {
compileSdkVersion 23
buildToolsVersion "23.0.3"
defaultConfig {
...
}
}
As per duncanc4's comment below,
The build.gradle file you want to edit is in the android/app folder
within your project directory.

The error you're getting seems to be related to system's permissions, since it's not able to create a folder.
Try running the sdk-manager using root (with su or sudo commands).

I had this error:
Failed to find Build Tools revision 23.0.2
When you got updated/installed:
Android SDK Build Tools
Android SDK Tools
Change version number in build.gradle
FROM
buildToolsVersion "23.0.2"
TO
buildToolsVersion "25.0.2"
How to find what Build Tools version you have

Check your $ANDROID_HOME, sometimes is /usr/local/opt/android, but it's not your install sdk path, change it and fix this problem

Nothing helped until I found this solution : https://stackoverflow.com/a/39068538/3995091
In Android SDK, the build tools with the correct version where shown as installed, but still I got the same error saying they couldn't be found. When I used the above solution, I found out they were indeed not installed, although Android SDK thought they were. Installing them solved it for me.

While running react-native In case you have installed 23.0.3 and it is asking for 23.0.1 simply in your application project directory. Open anroid/app/build.gradle and change buildToolsVersion "23.0.3"

In the Gradle Console (link available in the window bottom right), you have two tabs: the error is shown in Gradle Build tab. Click on the Gradle Sync tab, then click on the Install Build Tools XX.X.X and sync project link. This will download the build version required by your project.
You may also change your project SDK version but you don't always have this option if it is imposed.

If you already install the correct Android SDK Platform-Tools (Build Tool) and you still get an error, try to invalidate the cache; File -> Invalidate caches / Restart....

On my system, Android SDK Manager showed /usr/local/Cellar/android-sdk as the SDK path, when $ANDROID_HOME was /Users/james/Library/Android/sdk. I just added a symlink for the correct build tools version.

Two solutions: You have to instal the required buildToolVersion or set it as described above.
Notice that if you are trying to set the buildToolsVersion "23.0.3" using Android Studio 3.0 or more it won't work until you remove all builversion you have keeping just one last version you use.
I read this somewhere else and this works for me.
Hope this helps.

As the error says
Failed to find build Tools revision 23.0.1
This means that in your project you have used
buildToolsVersion "23.0.3"
So,You need to download the exact same version this makes the error disappear
**Step 1:**
GO to Tools and click SDK Manager
**Step 2:**
you can see SDK Platforms ,SDK Tools and SDK update Sites
**Step3:**
Click SDK Tools and click show package details
**Step 4:**
Select the version that you have mentioned in your Project
These Steps has solved my issue.

If anyone can't build their downloaded source code (probably google codelabs source code) with Android Studio, try simply remove the buildToolsVersion from the build.gradle file, and Android Studio will build the project with it's default latest buildToolVersion
¯_(ツ)_/¯

Each version of the Android Gradle Plugin now has a default version of the build tools.
So, probably you specified build tool version explicitly in the build file.
Just remove buildToolsVersion = "x.y.z" from your build.gradle script.
If, for some reason, you need that specific revision, follow the other answer.

Just install it from Android Studio ;)

AndroidStudio: Failed to sync Install build tools

Going crazy with this error from about a couple of hours.
The error is:
failed to find Build Tools revision 23.0.0 rc1
But I think to have all update (also the release candidate!)
This is the image: thank you.

Go to File > Project Structure > Select Module > Properties you will landing to this screen
Select Build Tools Version same as version selected in Compile Sdk Version.
Hope this will resolve your issue.

I could fix it by changing it to
android {
compileSdkVersion 23
buildToolsVersion "23.0.3"
}
in build.gradle file

I had the same issue, with Build Tools revision 24.0.0-rc4. The fix was to install the package using the command line.
~/Android/Sdk| ls -1 build-tools/
23.0.3
24.0.0-rc4
~/Android/Sdk| ./tools/android list sdk -a | grep "SDK Build-tools"
4- Android SDK Build-tools, revision 24 rc4
5- Android SDK Build-tools, revision 23.0.3
6- Android SDK Build-tools, revision 23.0.2
7- Android SDK Build-tools, revision 23.0.1
8- Android SDK Build-tools, revision 23 (Obsolete)
...
~/Android/Sdk| ./tools/android update sdk -a -u -t 4
...
~/Android/Sdk| ls -1 build-tools/
23.0.3
24.0.0-preview
24.0.0-rc4
(note that 4 in the android update sdk command above refers to the preceding list's number for the desired version, found at the beginning of the line).
The directory build-tools/24.0.0-rc4/ had been created when I installed the package from Android Studio's SDK Manager. The above method created build-tools/24.0.0-preview/.
My app-level build.gradle script uses the -rc4 version, as specified in the setup guide:
android {
compileSdkVersion 'android-N'
buildToolsVersion '24.0.0-rc4'
}
I do not understand the correlation between -rc4 and -preview or why specifying 24.0.0-rc4 picks up the -preview package, but it did fix the issue for me.

I have the same problem.
i have solved this issue by the following point.
First one is go to inside build.gradle app file and change this
android {
compileSdkVersion 22
buildToolsVersion "23.0.0 rc2"
}
with this one
android {
compileSdkVersion 22
buildToolsVersion "23.0.0"
}
I hope this will solve your issue.

I had the same problem and fixed it by going to File->Project Structure->Project and changing the Android Plugin Version to 1.3.0-beta1
Hope this helps!

I faced the same issue today,
And solved it easily by following points
1) Start the StandAlone SDK manager (To open the standalone sdk manager - Tools>Android>SDKManager> at Bottom YOu will see a link to launch StandAlone SDK manager)
2) Delete tha package of SDK Build Tools that you have already installed for e.g 24.0.0 rc4.
3) Close the standalone SDK manager then Restart Android Studio.
4) Once after restart the gradle will start building the project and you will get an alert download the package of SDK build tool and Sync. CLick on that and you will start downloading like that...
I hope this helps

I had the same problem, in my cases this happened because I changed the time on my computer to load .apk on google play. I spent a few hours to fix "this" problem until I remembered and changed the time back.

One of the answers ask you to use buildToolsVersion 23.0.0, but you would get buildToolsVersion 23.0.0 has serious bugs use buildToolsVersion 23.0.3. I did that then I started getting message buildToolsVersion 23.0.3 is too low from project app update to buildToolsVersion 25.0.0 and sync again. So I did that and it worked , So here are the final changes.
Inside app's build.gradle change this
android {
compileSdkVersion 22
buildToolsVersion "23.0.0 rc2"
}
with this one
android {
compileSdkVersion 22
buildToolsVersion "23.0.0"
}

based on your screenshot I can see you have BuildTools ver 23.0.0 rc2 installed. So to get it right open up your gradle build file "build.gradle(Module:app)" and edit buildToolsVersion part like that:
android {
compileSdkVersion 22
buildToolsVersion "23.0.0 rc2"
}

In case you have multiple SDKs locations (might happen if you play around with multiple Android Studio versions and create new location for SDK, what I did), make sure to check the local.properties file (both of the project and of your module, if you have such structure) and check if the line sdk.dir=/home/yourSdkLocation points indeed to the SDK you want to use.
This was the reason it wasn't working for me and it has fixed this.

There may be some file access permission/restriction problems. First check to access the below directory manually, check whether your TARGET_VERSION exists, Then check the android sdk manager.
sdk/build-tools/{TARGET_VERSION}

Had the same problem. I my case the build.gradel(app) was missing buildToolsVersion "27.0.0". So I open a previously working project to determine the version and added this line buildToolsVersion "27.0.0". Now it works fine.
Hope this helps.

I was also facing the same problem with gradle. Now I have solved by installing the highlighted in red. To navigate on this page Open Android studio > Tool > Android > SDK Manager > Appearance & Behavior > System Settings > Android SDK > SDK Tools (from tab options) > Show Package details(check box on the right bottom corner). After installing these just refresh the gradle everything will be resolved.

In case you have error regarding 'SDK build-tools failed' while installing Android Studio, Then you can Download build-tools from - https://androidsdkmanager.azurewebsites.net/Buildtools

Go to File > Project Structure > Select Module > Properties
After that CLICK on your project which will shown in LEFT PANEL
Then Select Properties
Change Build Tool Version to 22.0.1
It works for sure

problem:
Error:failed to find Build Tools revision 23.0.0 rc2
solution:
File > Project Structure > click on Modules > Properties
Change Build Tool Version to 23.0.1
its work for me

enter image description here
Start the project structure( file>structure)
You can see:
on the left, modules list;
on the right, Properties>Build Tools Version
there maybe are more than one modules.
change "Build Tools Version" for every Module.
it works.

Android-Jenkins: failed to find Build Tools revision 17.0.0 On Jenkins Build Server

I'm trying to use the Android Emulator on Jenkins to build and test my project. But I'm getting an the following error when running my gradle tasks;
failed to find Build Tools revision 17.0.0
the gradle task I'm running is;
./gradlew clean connectedCheck
in my gradle build file I has the following configuration
android {
compileSdkVersion 17
buildToolsVersion "17.0.0"
defaultConfig {
minSdkVersion 7
targetSdkVersion 17
}
}
The build server is a headless Ubuntu instance (12 something). My first thought was that I didn't have the correct build tools installed so I had a look in my android-sdk/build-tools director. All I could see was a directory called 18.1.1. So I thought if I updated my android sdk it would download version 17.0.0. So I ran the following command:
android update sdk --no-ui
and it seems to download various many things but looking in the build tools directory again I still only see version 18.1.1.
So questions are:
1) Am I right in assuming the build is failing because I don't have the correct build tools revision in my android sdk directory? (/android-sdk/build-tools)
2) How do I update the build-tools on a headless server so that I have version 17.0.0?
If you need me to provide more information, please let me know.
Thanks in advance for you help.

By default, android update sdk (or android list sdk --extended) only lists the packages which aren't considered deprecated.
As Build Tools 17.0.0 is a comparatively old version, it won't be shown by default.
Running with the -a (--all) flag will get you the older versions, e.g.:
android update sdk -u -a -t build-tools-17.0.0
At some point in the future the Jenkins plugin should automatically install the correct build tools for you, based on your build.gradle file.
Edit (Nov 2015): This functionality probably will not be added to the Android Emulator plugin.
Nowadays I would recommend using the android-sdk-manager Gradle plugin, which automates the installation of all prerequisites for a Jenkins build, including Android SDK, tools, build-tools, platforms, support libraries etc.
This can be very easily integrated into your project, and removes the need to keep the Android SDK installation on your Jenkins build machines up-to-date.

Other way to do it, is manually update for the missing version using Android SDK Manager attached to Jenkins (Look for Configuration: ANDROID_SDK, then under it access "tools/android.sh")

Import of Eclipse project into Android Studio using build.gradle file fails

I'm trying to import my Eclipse based Android project using the build.gradle file. I get the following message: "failed to find Build Tools revision 18.0.0". However, according to the Android SDK Manager, I have Android SDK Build-tools 18.0.1 installed.
I am doing all this on a 64-bit Windows 7 machine, if that's relevant.
How do I fix this?
UPDATE: I actually only updated to Build-tools 18.0.1 this morning. I then noticed that, when making a new project in Android Studio, it wouldn't allow me to create a project using Android 4.3 (4.2.2 was the latest allowable version). I tried dropping the target version of my project to Android 4.2.2, and re-exporting it. Now Android Studio complains about not being able to find Build-tools 18.0.1 when I try to import this project.

I was an Android Studio virgin too up until 10 minutes ago. I ran into the same problem. If you check your SDK Manager in Android Studio (or Eclipse I believe) it will show which tools you have installed. I am/was missing build tools 18.0.1 too and getting the error....but it was because I hadn't installed them.
So without modifying the Gradle build files, I was able to install the build tools using the SDK Manager and get everything up and running.
See this image:
As an aside, I also had to update the API version as well because it selected an API version that wasn't installed (which I don't get because it was when I compiled with Eclipse).
Hope this helps.

This did the trick for me.
In build.gradle file inside the main module modify the line
buildToolsVersion "18.0.0"
to
buildToolsVersion "18.0.1"

I'm very new to Android Studio (as of last night). I encountered the same problem. I opened up the 'build.gradle' file and modified the lines with: "compileSdkVersion 18" and "buildToolsVersion 18.0.1" to 17 and 17.0.0 respectively. It seems to do the trick!

you must make sure the build.gradle file contains the same version of the installed build tools.
you can find this out by looking in the /sdk/build-tools/android-X.Y.Z/source.properties file under the Android Studio installation
e.g.
Pkg.UserSrc=false
Pkg.Revision=18.1.1
then plug that revision number into the gradle build file:
android {
compileSdkVersion 18
buildToolsVersion "18.1.1"
...
}

I had issues with Gradle too. A full delete and install the latest version fixed it.

I also had the same problem then I have checked my Enviornment Variable and it is pointing to my old sdk which does not have Build tool 18.0.x After pointing it to new sdk everything goes well.