Error:Cause: buildToolsVersion is not specified

Question

I create a simple project and then I right-click on the project and then I use the make mudole app option. Now I have two build.gradle folders: 1- build.gradle:project My Application. 2- build.gradle: Mudole app. the first build.gradle is as follows:

// Top-level build file where you can add configuration options common to all sub-projects/modules. apply plugin: 'com.android.library' buildscript {     repositories {         jcenter()     }     dependencies {         classpath 'com.android.tools.build:gradle:1.3.0'          // NOTE: Do not place your application dependencies here; they belong         // in the individual module build.gradle files     } }  allprojects {     repositories {         jcenter()     } } 

And the second Build.gradle folder is as follows:

 apply plugin: 'com.android.application' android {     compileSdkVersion 23     buildToolsVersion "23.0.0"      defaultConfig {         applicationId "com.exam.exam.myapplication"         minSdkVersion 7         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']) } 

And now I click on the run option to create aar file from this project But I get the following error:

Error:Cause: buildToolsVersion is not specified. 

Answer 1

I had the same issue. What I was doing wrong was the placing of apply plugin statement in the root gradle of the project. When I placed it in the app gradle then the issue got resolved.

What I would suggest is to check if you are placing some statement in the root gradle that you should be placing in the app gradle.