title: Failed to open file:gradle
body: <p>Hello everyone i have gone through all the answers of stackoverflow but not solved my problem. here is my "build.gradle(app)" file.On compiling the gradle files with program i got the error that cann't find the file.</p>
  
  <pre><code>apply plugin: 'com.android.application'
  
  android {
      compileSdkVersion 21
      buildToolsVersion "21.1.1"
  
      defaultConfig {
          applicationId "com.example.lalit.mapviewtest"
          minSdkVersion 15
          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-v7:21.0.0'
  }
  </code></pre>