flex布局切记，最外层要加：{{flex：1}}


< View style= {{ flex: 1 } } >
< Tabs >
< TabPane tab= "Tab01" key= "junior" >
< Text > { "Tab内容001" } </ Text >
</ TabPane >
< TabPane tab= "Tab02" key= "middle" >
< Text > { "Tab2内容002" } </ Text >
</ TabPane >
</ Tabs >
</ View >;

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