title: Installation failed since app's minSdkVersion is newer than device's API level
body: <p>Here is my gradle settings.</p>
  
  <pre><code>ext {
      android_compile_version = 26
      android_version = '26.0.1'
      android_min_sdk_version =15
  
      appcompat_library_version = '25.2.0'
      support_library_version = '25.2.0'
      gms_library_version = '11.0.4'
  }
  </code></pre>
  
  <p>this is define in my project.gradle file and </p>
  
  <pre><code>apply plugin: 'com.android.application'
  
  android {
  
      compileSdkVersion android_compile_version
      buildToolsVersion android_version
  
  defaultConfig {
  
      applicationId "com.xxasda.stickman"
  
      minSdkVersion android_min_sdk_version
      targetSdkVersion compileSdkVersion
      versionCode 2
      versionName "1.1"
  }
  buildTypes {
      release {
          minifyEnabled false
          proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.txt'
      }
  }
  }
  
  dependencies {
      compile "com.android.support:appcompat-v7:${appcompat_library_version}"
      compile "com.android.support:support-v4:${support_library_version}"
      compile project(':libraries:BaseGameUtils')
  }
  
  buildscript {
      repositories {
          jcenter()
      }
  }
  </code></pre>
  
  <p>This is my Build.Gradle file I don't know why it's not compiling.
  but when I try to run application on emulator it throws me this error</p>
  
  <pre><code>Failure [INSTALL_FAILED_OLDER_SDK]
  
  
  Installation failed since app's minSdkVersion is newer than device's API level (API 23).
  Please update your apps minSdkVersion.
  Error while Installing APK
  </code></pre>
  
  <p>I checked many times and replace min_sdk_version with absolute value 15 but still no luck.any one please advice it would be helpful.</p>
  
  <p>Thank you. :)</p>