From a345e2c6f1569c1b86cdd4a0c78752c950113e8e Mon Sep 17 00:00:00 2001
From: Daniel Sogl <daniel@sogls.de>
Date: Sat, 17 Mar 2018 11:15:42 +0100
Subject: [PATCH] feat(camera-preview): add onBackButton function

fixes: #1967
---
 src/@ionic-native/plugins/camera-preview/index.ts | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/src/@ionic-native/plugins/camera-preview/index.ts b/src/@ionic-native/plugins/camera-preview/index.ts
index 4545d9635..b4f1e2fb6 100644
--- a/src/@ionic-native/plugins/camera-preview/index.ts
+++ b/src/@ionic-native/plugins/camera-preview/index.ts
@@ -394,5 +394,12 @@ export class CameraPreview extends IonicNativePlugin {
    */
   @Cordova()
   tapToFocus(xPoint: number, yPoint: number): Promise<any> { return; }
+  
+ /**
+  * Add a listener for the back event for the preview
+  * @return {Promise<any>} if backbutton pressed
+  */
+  @Cordova()
+  onBackButton(): Promise<any> { return; }
 
 }