JWPlayer geting在播放器的url更改时崩溃

更改 Channels 网址时遇到问题 .

MainActivity.java
    -----------------------------
    rvChannelList.post(new Runnable() {
        @Override
        public void run() {
            mPlayerView.load(((ChannelListAdapter) rvChannelList.getAdapter()).getPlaylistItems());
        }
    });



     rvChannelList.setOnItemSelectedListener(new AdapterView.OnItemSelectedListener() {
        @Override
        public void onItemSelected(AdapterView<?> parent, View view, int position, long id) {
            mPlayerView.playlistItem(position);
        }

        @Override
        public void onNothingSelected(AdapterView<?> arg0) {

        }
    });


    ChannelListAdapter.java
    -----------------------------
    public ChannelListAdapter(Context context) {
    this.context = context;
    channels = Realm.getDefaultInstance().where(Channel.class).findAll();
    channels.addChangeListener(new RealmChangeListener<RealmResults<Channel>>() {
        @Override
        public void onChange(RealmResults<Channel> channels) {
            notifyDataSetChanged();
        }
    });
    for (Channel channel : channels) {
        playlistItems.add(
                new PlaylistItem.Builder()
                        .file(channel.getStreaming_url())
                        .mediaDrmCallback(new HomeActivity.WidevineMediaDrmCallback())
                        .description("")
                        .build());
    }

    }

    public List<PlaylistItem> getPlaylistItems(){
    return playlistItems;
    }

    main_activity.xml
    ----------------------------
    <com.longtailvideo.jwplayer.JWPlayerView
            xmlns:jwp="http://schemas.android.com/apk/lib/com.longtailvideo.jwplayer"
            android:layout_width="0dp"
            android:layout_height="match_parent"
            android:layout_weight="0.6"
            android:id="@+id/mPlayerView"
            android:layout_margin="20dp"
            app:jw_stretching="fill"
            jwp:jw_autostart="false"/>

FATAL EXCEPTION：main进程：PID：14627 java.lang.ArrayIndexOutOfBoundsException：length = 12; com.google.android.exoplayer2.SimpleExoPlayer上的com.longtailvideo.jwplayer.ce $ 1.onRenderedFirstFrame（SourceFile：323）中java.util.ArrayList.get（ArrayList.java:310）的index = -1 $ ComponentListener.onRenderedFirstFrame（ SourceFile：974）在android.os.Handler.dispatchMessage的android.os.Handler.handleCallback（Handler.java:739）的com.google.android.exoplayer2.video.VideoRendererEventListener $ EventDispatcher $ 6.run（SourceFile：209） Handler.java:95）在android.app.Looper.loop（Looper.java:148）的android.app.ActivityThread.main（ActivityThread.java:5422）at java.lang.reflect.Method.invoke（Native Method） at com.android.internal.os.ZygoteInit $ MethodAndArgsCaller.run（ZygoteInit.java:726）at com.android.internal.os.ZygoteInit.main（ZygoteInit.java:616）