Added getIsWiredHeadsetPluggedIn to bridge methods (#42)

* Added native method so can know initial state of isWiredHeadsetPluggedIn

* Changed Impelementation to async style and restrict only ios

Author: masaori

index.js

@@ -45,6 +45,15 @@ class InCallManager {
         _InCallManager.turnScreenOn();
     }
 
+    async getIsWiredHeadsetPluggedIn() {
+        if (Platform.OS === 'ios') {
+            return await _InCallManager.getIsWiredHeadsetPluggedIn();
+        } else {
+            console.log("Android doesn't support getIsWiredHeadsetPluggedIn() yet.");
+            return null;
+        }
+    }
+
     setFlashOn(enable, brightness) {
         if (Platform.OS === 'ios') {
             enable = (enable === true) ? true : false;

ios/RNInCallManager/RNInCallManager.swift

@@ -212,6 +212,13 @@ class RNInCallManager: NSObject, AVAudioPlayerDelegate {
         return false
     }
 
+    @objc func getIsWiredHeadsetPluggedIn(_ resolve: RCTPromiseResolveBlock, reject: RCTPromiseRejectBlock) -> Void {
+        let isWiredHeadsetPluggedIn = self.isWiredHeadsetPluggedIn()
+        resolve([
+            ["isWiredHeadsetPluggedIn": isWiredHeadsetPluggedIn]
+        ])
+    }
+
     func isWiredHeadsetPluggedIn() -> Bool {
         // --- only check for a audio device plugged into headset port instead bluetooth/usb/hdmi
         return self.checkAudioRoute([AVAudioSessionPortHeadphones], "output") || self.checkAudioRoute([AVAudioSessionPortHeadsetMic], "input")

ios/RNInCallManager/RNInCallManagerBridge.m

@@ -26,5 +26,5 @@ @interface RCT_EXTERN_REMAP_MODULE(InCallManager, RNInCallManager, NSObject)
 RCT_EXTERN_METHOD(checkCameraPermission:(RCTPromiseResolveBlock)resolve reject:(RCTPromiseRejectBlock)reject)
 RCT_EXTERN_METHOD(requestCameraPermission:(RCTPromiseResolveBlock)resolve reject:(RCTPromiseRejectBlock)reject)
 RCT_EXTERN_METHOD(getAudioUriJS:(NSString *)audioType fileType:(NSString *)fileType resolve:(RCTPromiseResolveBlock)resolve reject:(RCTPromiseRejectBlock)reject)
-
+RCT_EXTERN_METHOD(getIsWiredHeadsetPluggedIn:(RCTPromiseResolveBlock)resolve reject:(RCTPromiseRejectBlock)reject)
 @end