title: android.support.v4.content.FileProvider not found
body: <p>I am trying to upgrade a working old app to support Android API 26, and one of the thing I need to use is android.support.v4.content.FileProvider - but it was not found.</p>
  
  <pre><code>    &lt;provider
          android:name="android.support.v4.content.FileProvider"
          android:authorities="${applicationId}.fileprovider"
          android:exported="false"
          android:grantUriPermissions="true"&gt;
          &lt;meta-data
              android:name="android.support.FILE_PROVIDER_PATHS"
              android:resource="@xml/file_paths" /&gt;
      &lt;/provider&gt;
  </code></pre>
  
  <p>Due to the early Android build, the gradle file seems simple. Is it as simple as adding a dependency? I have look around and some suggested adding a multidex which I don't understand. Any help is appreciated, thank you!</p>
  
  <pre><code>android {
      compileSdkVersion 26
      buildToolsVersion '26.0.2'
  
      defaultConfig {
          applicationId "virtualgs.spaint"
          minSdkVersion 22
          targetSdkVersion 26
      }
  
      buildTypes {
          release {
              minifyEnabled false
              proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.txt'
          }
      }
  }
  </code></pre>