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activity怎么设置默认fragment

2025-04-01 23:20:30

推荐回答（2个）

回答1：

开发工具eclipse或者android studio
1，主流app都是采用碎片即fragment+radiobutton实现
2，可以将fragment先初始化
3，可以把显示哪一个fragment抽成一个方法
4，通过radioButon的监听事件进一步绑定方法
5，再通过设置默认值的方式，显示；比如显示第二个fragment就select(2);就可以了
注意fragment的显示方式，可以使用FragmentTransaction 的show()和hide()方法控制

回答2：

在activity的onCreate里面加载默认的fragment，或者直接在layout里面写fragment1。activity是不能跳转到fragment里面的。

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