Adds recognize from microphone and stop listening to the application for IOS (#34)

Author: mokarian

examples/ionic-angular/src/app/speechToTextTab/speechToText.page.html

@@ -17,7 +17,8 @@
   class="capturedText"
   disabled
   readonly
-  auto-grow="true"> 
+  auto-grow="true">
+    {{capturedText}}
   </ion-textarea>
 </ion-item>
 <ion-button 

examples/ionic-angular/src/app/speechToTextTab/speechToText.page.ts

@@ -1,38 +1,54 @@
-import { Component, ViewChild, ElementRef } from '@angular/core';
-import { CognitiveServices } from '@ionic-native/cognitiveservices/ngx';
+import {Component, ViewChild, ElementRef} from '@angular/core';
+import {CognitiveServices} from '@ionic-native/cognitiveservices/ngx';
 
 
 @Component({
-  selector: 'app-speechToTextTab',
-  templateUrl: 'speechToText.page.html',
-  styleUrls: ['speechToText.page.scss']
+    selector: 'app-speechToTextTab',
+    templateUrl: 'speechToText.page.html',
+    styleUrls: ['speechToText.page.scss']
 })
 
 export class SpeechToTextPage {
-  captureButtonText = 'Capture Speech';
-  captureButtonColor = 'primary';
-  capturePressed = false;
-
-    constructor(private cognitiveServices: CognitiveServices) { }
-
-  captureSpeechButtonClicked() {
-    this.toggleSpeechButton(!this.capturePressed);
-
-  }
-  stopAudioCapture() {
-    this.toggleSpeechButton(false);
-  }
-
-  toggleSpeechButton(state: boolean) {
-    if (state) {
-      this.capturePressed = true;
-      this.captureButtonText = 'Stop Capture';
-      this.captureButtonColor = 'danger';
-    } else {
-      alert('Audio capture ended');
-      this.capturePressed = false;
-      this.captureButtonText = 'Capture Speech';
-      this.captureButtonColor = 'primary';
+    captureButtonText = 'Capture Speech';
+    captureButtonColor = 'primary';
+    capturePressed = false;
+    capturedText: string[];
+
+    constructor(private cognitiveServices: CognitiveServices) {
+    }
+
+    captureSpeechButtonClicked() {
+        this.toggleSpeechButton(!this.capturePressed);
+
+    }
+
+    stopAudioCapture() {
+        this.toggleSpeechButton(false);
+    }
+
+    toggleSpeechButton(state: boolean) {
+        if (state) {
+            this.startListening();
+            this.capturePressed = true;
+            this.captureButtonText = 'Stop Capture';
+            this.captureButtonColor = 'danger';
+        } else {
+            this.stopListening();
+            this.capturePressed = false;
+            this.captureButtonText = 'Capture Speech';
+            this.captureButtonColor = 'primary';
+        }
+    }
+
+    startListening() {
+        this.cognitiveServices.RecognizeFromMicrophone().subscribe(results => {
+            this.capturedText = results['result'];
+        }, (str: any) => {
+            alert(str);
+        });
+    }
+
+    stopListening() {
+        this.cognitiveServices.StopListening();
     }
-  }
 }