1.4.1 截屏分享问题

Creator 2.x
#1

之前截屏分享好的（参考的这个http://forum.cocos.com/t/creator/40750）,现在执行到saveToFile 就不执行了？

代码：
//如果待截图的场景中含有 mask，请开启下面注释的语句
var picName = ‘captureshortshare.png’;
var renderTexture = cc.RenderTexture.create(width, height, cc.Texture2D.PIXEL_FORMAT_RGBA8888, gl.DEPTH24_STENCIL8_OES);

            cc.director.getScene()._sgNode.addChild(renderTexture);
            renderTexture.setVisible(false);
            
            let img_path = jsb.fileUtils.getWritablePath() + picName;
            
            renderTexture.begin();
            cc.director.getScene()._sgNode.visit();
            renderTexture.end();
            
            renderTexture.saveToFile(picName, cc.IMAGE_FORMAT_PNG, true, function () {
                renderTexture.removeFromParent();
                //原生分享
                if (img_path != null && img_path != "") {
                    jsb.reflection.callStaticMethod("org/cocos2dx/javascript/JsCallNativeBridge", "shareImageToWeixin", "(Ljava/lang/String;)V", img_path);
                }
                //end 原生分享
             });