title: Execution failed for task ':app:compileDebugAidl': aidl is missing
body: <p>I installed Android Studio on my computer. I created a new project but that got me the error below. What can I do?</p>
  
  <pre><code>Error:Execution failed for task ':app:compileDebugAidl'.
  &gt; aidl is missing
  </code></pre>
  
  <p>My Android Studio version is <code>1.1.0</code>.</p>
  
  <p>This is my <code>build.gradle</code> file:</p>
  
  <pre><code>buildscript {
      repositories {
          jcenter()
      }
      dependencies {
          classpath 'com.android.tools.build:gradle:1.1.0'
          // NOTE: Do not place your application dependencies here; they belong
          // in the individual module build.gradle files
      }
  }
  allprojects {
      repositories {
          jcenter()
      }
  }
  </code></pre>
  
  <p>And :</p>
  
  <pre><code>apply plugin: 'com.android.application'
  
  android {
      compileSdkVersion 21
      buildToolsVersion "24.1.2"
  
      defaultConfig {
          applicationId "com.example.jo.cloning_a_login_screen"
          minSdkVersion 13
          targetSdkVersion 21
          versionCode 1
          versionName "1.0"
      }
      buildTypes {
          release {
              minifyEnabled false
              proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
          }
      }
  }
  
  dependencies {
      compile fileTree(dir: 'libs', include: ['*.jar'])
      compile 'com.android.support:appcompat-v7:22.0.0'
  }
  </code></pre>