From 48b221e5b09a3bd6093c369feb4e43454c1611eb Mon Sep 17 00:00:00 2001
From: Pavan Paruchuri <pavan.paruchuri@mutualmobile.com>
Date: Fri, 28 Oct 2016 10:57:10 +0530
Subject: [PATCH] Hiding the preview once we capture the image and showing the
 loading indicator until image is saved. Otherwise preview is being shown
 until all the process is done.

---
 .../ViewController/CameraViewController.swift | 23 +++++++++++++++++++
 1 file changed, 23 insertions(+)

diff --git a/ALCameraViewController/ViewController/CameraViewController.swift b/ALCameraViewController/ViewController/CameraViewController.swift
index e3b12000..daded65f 100644
--- a/ALCameraViewController/ViewController/CameraViewController.swift
+++ b/ALCameraViewController/ViewController/CameraViewController.swift
@@ -485,14 +485,20 @@ public class CameraViewController: UIViewController {
     }
     
     internal func saveImage(image: UIImage) {
+        let spinner = showSpinner()
+        
+        cameraView.preview.isHidden = true
         _ = SingleImageSaver()
             .setImage(image)
             .onSuccess { asset in
+                self.hideSpinner(spinner)
                 self.layoutCameraResult(asset: asset)
             }
             .onFailure { error in
+                self.hideSpinner(spinner)
                 self.toggleButtons(enabled: true)
                 self.showNoPermissionsView(library: true)
+                self.cameraView.preview.isHidden = false
             }
             .save()
     }
@@ -558,4 +564,21 @@ public class CameraViewController: UIViewController {
         present(confirmViewController, animated: true, completion: nil)
     }
     
+    private func showSpinner() -> UIActivityIndicatorView {
+        let spinner = UIActivityIndicatorView()
+        spinner.activityIndicatorViewStyle = .white
+        spinner.center = view.center
+        spinner.startAnimating()
+        
+        view.addSubview(spinner)
+        view.bringSubview(toFront: spinner)
+        
+        return spinner
+    }
+    
+    private func hideSpinner(_ spinner: UIActivityIndicatorView) {
+        spinner.stopAnimating()
+        spinner.removeFromSuperview()
+    }
+    
 }