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![2019-05-26_011747](https://user-images.githubusercontent.com/18227093/58372741-ab558600-7f54-11e9-8780-9a63eea45be7.png) 看图,这行代码小米8在运行时,如果参数是3报错,改回2正常,但是确实是只有两个滑动栏位,所以改回2正常