Add support for bluetooth headset detection.

.gitignore

@@ -1,2 +1,3 @@
 .idea
-*.iml
+*.iml
+.vscode

README.md

@@ -31,8 +31,6 @@ The successCallback (first argument) is a boolean (true or false). Couldn't be e
 
 If you need to respond to removal or added headset while your app i running, you can use the `HeadsetDetection.registerRemoteEvents` function and listen for either `headsetAdded` or `headsetRemoved`:
 
-Note that changes to the Bluetooth headset state on Android are not supported currently. So on Android you'll only get an event when a wired headset is disconnected. On iOS for both wired and Bluetooth headsets. I only recently figured out this glitch when creating the [NativeScript Headset Detection plugin](https://github.com/EddyVerbruggen/nativescript-headset-detection), which does support this feature on Android.
-
 ```js
 document.addEventListener('deviceready', function() {
     window.HeadsetDetection.registerRemoteEvents(function(status) {

package.json

@@ -11,7 +11,7 @@
   },
   "repository": {
     "type": "git",
-    "url": "git+https://github.com/EddyVerbruggen/HeadsetDetection-PhoneGap-Plugin.git"
+    "url": "git+https://github.com/RamseyInHouse/HeadsetDetection-PhoneGap-Plugin.git"
   },
   "keywords": [
     "cordova",
@@ -28,4 +28,4 @@
     "url": "https://github.com/EddyVerbruggen/HeadsetDetection-PhoneGap-Plugin/issues"
   },
   "homepage": "https://github.com/EddyVerbruggen/HeadsetDetection-PhoneGap-Plugin#readme"
-}
+}

plugin.xml

@@ -1,8 +1,6 @@
 <?xml version="1.0" encoding="UTF-8"?>
-<plugin xmlns="http://apache.org/cordova/ns/plugins/1.0"
-        xmlns:android="http://schemas.android.com/apk/res/android"
-        id="cordova-plugin-headsetdetection"
-        version="3.0.0">
+<plugin xmlns="http://apache.org/cordova/ns/plugins/1.0" 
+  xmlns:android="http://schemas.android.com/apk/res/android" id="cordova-plugin-headsetdetection" version="3.0.0">
 
   <name>Headset Detection</name>
 
@@ -42,6 +40,7 @@
     </config-file>
 
     <config-file target="AndroidManifest.xml" parent="/manifest">
+      <uses-permission android:name="android.permission.BLUETOOTH" />
       <uses-permission android:name="android.permission.MODIFY_AUDIO_SETTINGS"/>
     </config-file>
 

src/android/nl/xservices/plugins/HeadsetDetection.java

@@ -6,6 +6,7 @@
 import org.apache.cordova.CordovaInterface;
 import org.apache.cordova.CordovaWebView;
 
+import android.bluetooth.BluetoothHeadset;
 import android.content.Context;
 import android.media.AudioManager;
 import android.content.Intent;
@@ -23,6 +24,9 @@ public class HeadsetDetection extends CordovaPlugin {
 
   private static final String ACTION_DETECT = "detect";
   private static final String ACTION_EVENT = "registerRemoteEvents";
+  private static final int DEFAULT_STATE = -1;
+  private static final int DISCONNECTED = 0;
+  private static final int CONNECTED = 1;
   protected static CordovaWebView mCachedWebView = null;
 
   BroadcastReceiver receiver;
@@ -37,23 +41,20 @@ public void initialize(CordovaInterface cordova, CordovaWebView webView) {
       mCachedWebView = webView;
       IntentFilter intentFilter = new IntentFilter();
       intentFilter.addAction(Intent.ACTION_HEADSET_PLUG);
+      intentFilter.addAction(BluetoothHeadset.ACTION_CONNECTION_STATE_CHANGED);
       this.receiver = new BroadcastReceiver() {
           @Override
           public void onReceive(Context context, Intent intent) {
-              if (intent.getAction().equals(Intent.ACTION_HEADSET_PLUG)) {
-                  int state = intent.getIntExtra("state", -1);
-                  switch (state) {
-                  case 0:
-                      Log.d(LOG_TAG, "Headset is unplugged");
-                      mCachedWebView.sendJavascript("cordova.require('cordova-plugin-headsetdetection.HeadsetDetection').remoteHeadsetRemoved();");
-                      break;
-                  case 1:
-                      Log.d(LOG_TAG, "Headset is plugged");
-                      mCachedWebView.sendJavascript("cordova.require('cordova-plugin-headsetdetection.HeadsetDetection').remoteHeadsetAdded();");
-                      break;
-                  default:
-                      Log.d(LOG_TAG, "I have no idea what the headset state is");
-                  }
+              int status = getConnectionStatus(intent.getAction(), intent);
+
+              if (status == CONNECTED) {
+                Log.d(LOG_TAG, "Headset is connected");
+                mCachedWebView.sendJavascript("cordova.require('cordova-plugin-headsetdetection.HeadsetDetection').remoteHeadsetAdded();");
+              } else if (status == DISCONNECTED) {
+                Log.d(LOG_TAG, "Headset is disconnected");
+                mCachedWebView.sendJavascript("cordova.require('cordova-plugin-headsetdetection.HeadsetDetection').remoteHeadsetRemoved();");
+              } else {
+                Log.d(LOG_TAG, "Headset state is unknown: " + status);
               }
           }
       };
@@ -91,6 +92,24 @@ public void onReset() {
       removeHeadsetListener();
   }
 
+  private int getConnectionStatus(String action, Intent intent) {
+      int state = DEFAULT_STATE;
+      int normalizedState = DEFAULT_STATE;
+      if (action.equals(Intent.ACTION_HEADSET_PLUG)) {
+        state = intent.getIntExtra("state", DEFAULT_STATE);
+      } else if (action.equals(BluetoothHeadset.ACTION_CONNECTION_STATE_CHANGED)) {
+        state = intent.getIntExtra(BluetoothHeadset.EXTRA_STATE, DEFAULT_STATE);
+      }
+
+      if ((state == 1 && action.equals(Intent.ACTION_HEADSET_PLUG)) || (state == 2 && action.equals(BluetoothHeadset.ACTION_CONNECTION_STATE_CHANGED))) {
+          normalizedState = CONNECTED;
+      } else if (state == 0) {
+          normalizedState = DISCONNECTED;
+      }
+
+      return normalizedState;
+  }
+
   private void removeHeadsetListener() {
       if (this.receiver != null) {
           try {