Use of unresolved identifier 'FIRApp'
<p>I have implemented Firebase in my iOS App using cocoa pods. The problem is when i try to configure firebase, i get this error <strong>Use of unresolved identifier 'FIRApp'</strong>. This error occurs when i use the code <strong>FIRApp.configure()</strong> in appdelegate file. Can anyone help me with this?</p>

<pre><code>import UIKit
import AWSCore
import GoogleMaps
import Firebase
@UIApplicationMain
class AppDelegate: UIResponder, UIApplicationDelegate {

  var window: UIWindow?

  let defaults = NSUserDefaults.standardUserDefaults()

  func application(application: UIApplication, didFinishLaunchingWithOptions launchOptions: [NSObject: AnyObject]?) -&gt; Bool {
    // Override point for customization after application launch.

    // Use Firebase library to configure APIs
    FIRApp.configure()
    return true
  }
}
</code></pre>

<p>I have followed Firebase Guide <a href="https://firebase.google.com/docs/ios/setup#initialize_firebase_in_your_app" rel="noreferrer">https://firebase.google.com/docs/ios/setup#initialize_firebase_in_your_app</a></p>

<p>Here is the pod file</p>

<pre><code># Uncomment this line to define a global platform for your project
platform :ios, '8.0'
use_frameworks!

target 'xxxx' do
     pod 'SwiftyJSON', :git =&gt;       'https://github.com/SwiftyJSON/SwiftyJSON.git'
     pod 'DKChainableAnimationKit'
     pod 'Charts'
     pod 'JVFloatLabeledTextField'
     pod 'AWSAutoScaling'
     pod 'AWSCloudWatch'
     pod 'AWSCognito'
     pod 'AWSDynamoDB'
     pod 'AWSEC2'
     pod 'AWSElasticLoadBalancing'
     pod 'AWSKinesis'
     pod 'AWSMobileAnalytics'
     pod 'AWSS3'
     pod 'AWSSES'
     pod 'AWSSimpleDB'
     pod 'AWSSNS'
     pod 'AWSSQS'
     pod 'GoogleMaps'
     pod 'Firebase'
end
</code></pre>