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:

1. Android SDK Tools, revision 24.0.2
2. Android SDK Platform-tools, revision 23.0.2
3. 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:

1. Android SDK Build Tools
2. 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 ;)