前提:uniapp的app端,用uni自带的toast,icon会自占一行,很丑
如图:
利用 plus.nativeUI.toast 显示正常大小的icon
plus.nativeUI.toast(e,{type: 'text',duration: 'short',style: "inline",align: 'center',verticalAlign: 'center',icon: "/static/images/icon/success.png"});
效果如图: 
参考网址:
https://www.html5plus.org/doc/zh_cn/nativeui.html#plus.nativeUI.toast