likai

When switching tab pages, onPageSelected always executes once and the passed e.nativeEvent-position is 0

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` handlePageSelected(e)}` HandlePageSelected is always executed every time the page is switched, and passing an index of 0 results in the inability to retain the state of an option selected...

我并不清楚getSystemInfoSync都使用了哪些 所有我提供了二种 并进行了注释 如有问题请修改或拒绝此pr