MusicUtils.java 文件源码

public static ServiceToken bindToService(Activity context,
                                         ServiceConnection callback) {
    Activity realActivity = context.getParent();
    if (realActivity == null) {
        realActivity = context;
    }
    ContextWrapper cw = new ContextWrapper(realActivity);
    cw.startService(new Intent(cw, MediaPlaybackService.class));
    ServiceBinder sb = new ServiceBinder(callback);
    if (cw.bindService(
            (new Intent()).setClass(cw, MediaPlaybackService.class), sb, 0)) {
        sConnectionMap.put(cw, sb);
        return new ServiceToken(cw);
    }
    return null;
}