TitanTarget的专栏

// 后台执行： dispatch_async(dispatch_get_global_queue(0, 0), ^{ // something }); // 主线程执行： dispatch_async(dispatch_get_main_queue(), ^{ // something }); // 一次性执行： static dispatch_onc

SurfaceHolder surfaceHolder = monitor.tileView.getHolder(); Canvas canvas = surfaceHolder.lockCanvas(); canvas.drawColor(Color.TRANSPARENT,Mode.CLEAR); surfaceHolder.unlockCanvasAndPost(ca