var render = new cc.RenderTexture(winSize.width, winSize.height,cc.IMAGE_FORMAT_JPEG,gl.DEPTH24_STENCIL8_OES);
render.begin(); cc.director.getRunningScene().visit(); render.end();
render.saveToFile("截屏後保存本地的名字", cc.IMAGE_FORMAT_JPEG);
//listview 開啓遮罩後 在android上測試沒有問題