HXMusicEngine: Resolved IllegalStateException issues with nextPlayer MediaPlayer object.

Author: huhx0015

apk/HXAudioPlayer_Demo.apk

@@ -7,8 +7,8 @@ android {
     defaultConfig {
         minSdkVersion 9
         targetSdkVersion 25
-        versionCode 6
-        versionName "3.1.4"
+        versionCode 7
+        versionName "3.1.5"
     }
     buildTypes {
         release {

hxaudio/build.gradle

@@ -88,14 +88,18 @@ public void onPrepared(MediaPlayer currentPlayer) {
                         HXLog.d(LOG_TAG, "PREPARING: onPrepared(): MediaPlayer looping status: " + isLooped);
                     }
 
-                    currentPlayer.start(); // Begins playing the music.
+                    try {
+                        currentPlayer.start(); // Begins playing the music.
 
-                    // Invokes the associated listener call.
-                    if (musicEngineListener != null) {
-                        musicEngineListener.onMusicEnginePrepared();
-                    }
+                        // Invokes the associated listener call.
+                        if (musicEngineListener != null) {
+                            musicEngineListener.onMusicEnginePrepared();
+                        }
 
-                    HXLog.d(LOG_TAG, "MUSIC: onPrepared(): Music playback has begun.");
+                        HXLog.d(LOG_TAG, "MUSIC: onPrepared(): Music playback has begun.");
+                    } catch (Exception e) {
+                        HXLog.e(LOG_TAG, "ERROR: onPrepared(): " + e.getLocalizedMessage());
+                    }
                 }
             });
 
@@ -181,8 +185,14 @@ else if (musicItem.getMusicResource() != 0) {
         @TargetApi(Build.VERSION_CODES.JELLY_BEAN)
         @Override
         public void onPrepared(MediaPlayer mp) {
-            currentPlayer.setNextMediaPlayer(nextPlayer);
-            currentPlayer.setOnCompletionListener(nextPlayerCompletionListener);
+            try {
+                if (currentPlayer != null && nextPlayer != null) {
+                    currentPlayer.setNextMediaPlayer(nextPlayer);
+                    currentPlayer.setOnCompletionListener(nextPlayerCompletionListener);
+                }
+            } catch (Exception e) {
+                HXLog.e(LOG_TAG, "ERROR: onPrepared(): " + e.getLocalizedMessage());
+            }
         }
     };