uniapp开发的微信小程序，首页不能添加按钮直接调用分享吗？

        sharemp() {  
            uni.share({  
                provider: 'weixin',  
                scene: "WXSceneSession",  
                type: 5,  
                imageUrl: app.globalData.config.app_logo,  
                title: '润邦云',  
                miniProgram: {  
                    id: 'xxxxx',  
                    path: 'pages/home/index/index',  
                    type: 1,  
                    webUrl: app.globalData.web_url  
                },  
                success: ret => {  
                    console.log(JSON.stringify(ret));  
                }  
            });  

        },