title: Error:cannot find symbol class RecyclerView
body: <pre><code>android {
      compileSdkVersion 23
      buildToolsVersion "22.0.1"
      defaultConfig {
          applicationId "com.hiii"
          minSdkVersion 11
          targetSdkVersion 23
          versionCode 1
          versionName "1.0"
      }
      buildTypes {
          release {
              minifyEnabled false
              proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
          }
      }
      productFlavors {
      }
  }
  dependencies {
      compile fileTree(dir: 'libs', include: ['*.jar'])
      compile files('libs/bolts-android-1.2.1 - Copy.jar')
      compile 'com.android.support:appcompat-v7:23.0.0'
     }
  </code></pre>
  
  <p>I cannot use RecyclerView and Linearlayoutmanager .i have Tried to Compile the older version  too but every time it comes with error Cannot resolve symbol'recyclerview'.please help me</p>