Update documentation

README.md

@@ -56,6 +56,11 @@ Implement `RadioListener` to get notified on radio state changed.
 public class MainActivity extends Activity implements RadioListener
 ...
  @Override
+    public void onRadioConnected() {
+
+    }
+
+    @Override
     public void onRadioStarted() {
 
     }
@@ -118,5 +123,3 @@ License
     limitations under the License.
 
 
-
-

app/src/main/java/co/mobiwise/myapplication/MainActivity.java

@@ -1,6 +1,8 @@
 package co.mobiwise.myapplication;
 
 import android.app.Activity;
+import android.app.AlertDialog;
+import android.content.DialogInterface;
 import android.os.Bundle;
 import android.view.View;
 import android.widget.Button;
@@ -108,4 +110,25 @@ public void run() {
     public void onMetaDataReceived(String s, String s1) {
         //TODO Check metadata values. Singer name, song name or whatever you have.
     }
+
+    @Override
+    public void onPlayerException(Throwable throwable) {
+        runOnUiThread(new Runnable() {
+            @Override
+            public void run() {
+                AlertDialog.Builder builder = new AlertDialog.Builder(MainActivity.this)
+                        .setTitle("Cannot Stream Radio")
+                        .setMessage("There was a problem streaming the radio. Please check your Internet connection.")
+                        .setPositiveButton("OK", new DialogInterface.OnClickListener() {
+                            @Override
+                            public void onClick(DialogInterface dialog, int id) {
+                                dialog.cancel();
+                            }
+                        });
+
+                AlertDialog dialog = builder.create();
+                dialog.show();
+            }
+        });
+    }
 }

library/src/main/java/co/mobiwise/library/RadioListener.java

@@ -14,4 +14,6 @@ public interface RadioListener {
     void onRadioStopped();
 
     void onMetaDataReceived(String s, String s2);
+
+    void onPlayerException(Throwable throwable);
 }

library/src/main/java/co/mobiwise/library/RadioPlayerService.java

@@ -1,7 +1,9 @@
 package co.mobiwise.library;
 
 import android.app.Service;
+import android.content.Context;
 import android.content.Intent;
+import android.media.AudioManager;
 import android.media.AudioTrack;
 import android.os.Binder;
 import android.os.IBinder;
@@ -87,6 +89,10 @@ public enum State {
      */
     private boolean mLock;
 
+    private AudioManager audioManager;
+
+    private AudioManager.OnAudioFocusChangeListener audioFocusChangeListener;
+
     /**
      * Binder
      */
@@ -124,6 +130,18 @@ public void onCreate() {
         if(mTelephonyManager != null) {
             mTelephonyManager.listen(phoneStateListener, PhoneStateListener.LISTEN_CALL_STATE);
         }
+
+        audioManager = (AudioManager) getSystemService(Context.AUDIO_SERVICE);
+        audioFocusChangeListener = new AudioManager.OnAudioFocusChangeListener() {
+            @Override
+            public void onAudioFocusChange(int focusChange) {
+                if (focusChange == AudioManager.AUDIOFOCUS_GAIN) {
+                    play(mRadioUrl);
+                } else if (focusChange == AudioManager.AUDIOFOCUS_LOSS) {
+                    stop();
+                }
+            }
+        };
     }
 
     /**
@@ -139,15 +157,29 @@ public void play(String mRadioUrl){
             stop();
         }
         else if(!mLock){
-            mLock = true;
-            getPlayer().playAsync(mRadioUrl);
+            isSwitching = false;
+
+            int audioFocusRequestResult = audioManager.requestAudioFocus(audioFocusChangeListener, AudioManager.STREAM_MUSIC, AudioManager.AUDIOFOCUS_GAIN);
+
+            if (audioFocusRequestResult == AudioManager.AUDIOFOCUS_REQUEST_GRANTED) {
+                mLock = true;
+
+                getPlayer().playAsync(mRadioUrl);
+            } else {
+                mLock = false;
+
+                notifyRadioStopped();
+            }
         }
 
     }
 
     public void stop(){
         if(!mLock){
             mLock = true;
+
+            audioManager.abandonAudioFocus(audioFocusChangeListener);
+
             getPlayer().stop();
         }
     }
@@ -185,7 +217,11 @@ public void playerStopped(int i) {
 
     @Override
     public void playerException(Throwable throwable) {
-        //Empty
+        mLock = false;
+
+        for (RadioListener mRadioListener : mListenerList){
+            mRadioListener.onPlayerException(throwable);
+        }
     }
 
     @Override