ViewPager+RadioButton+FragmentPagerAdapter实现导航fragment生命周期分析

来源：互联网发布：python爬虫怎样赚外快编辑：程序博客网时间：2024/05/07 03:26

（1）刚开始进来：

01-21 03:18:16.264: I/DD(1736): DoorManagerFragment======onAttach======01-21 03:18:16.264: I/DD(1736): DoorManagerFragment======onCreate======01-21 03:18:16.268: I/DD(1736): DoorManagerFragment======onCreateView======01-21 03:18:16.272: I/DD(1736): DoorManagerFragment======onActivityCreated======01-21 03:18:16.284: I/DD(1736): DoorManagerFragment======onStart======01-21 03:18:16.284: I/DD(1736): DoorManagerFragment======onResume======01-21 03:18:16.288: I/DD(1736): ClerkManagerFragment======onAttach======01-21 03:18:16.296: I/DD(1736): ClerkManagerFragment======onCreate======01-21 03:18:16.296: I/DD(1736): ClerkManagerFragment======onCreateView======01-21 03:18:16.316: I/DD(1736): ClerkManagerFragment======onActivityCreated======01-21 03:18:16.316: I/DD(1736): ClerkManagerFragment======onStart======01-21 03:18:16.316: I/DD(1736): ClerkManagerFragment======onResume======

加载的是第一个和第二个Fragment，第三个和第四个Fragment的生命周期没走。

当滑动到第二个Fragment就会加载第三个Fragment。

01-21 03:19:42.560: I/DD(1736): MemberManagerFragment======onAttach======01-21 03:19:42.564: I/DD(1736): MemberManagerFragment======onCreate======01-21 03:19:42.572: I/DD(1736): MemberManagerFragment======onCreateView======01-21 03:19:42.576: I/DD(1736): MemberManagerFragment======onActivityCreated======01-21 03:19:42.576: I/DD(1736): MemberManagerFragment======onStart======01-21 03:19:42.596: I/DD(1736): MemberManagerFragment======onResume======

当滑动到第三个Fragment就会销毁第一个Fragment的视图注意不是销毁实例，创建第四个Fragment。

01-21 03:20:56.468: I/DD(1736): DoorManagerFragment======onPause======01-21 03:20:56.468: I/DD(1736): DoorManagerFragment======onStop======01-21 03:20:56.476: I/DD(1736): DoorManagerFragment======onDestroyView======01-21 03:20:56.484: I/DD(1736): MyCenterFragment======onAttach======01-21 03:20:56.488: I/DD(1736): MyCenterFragment======onCreate======01-21 03:20:56.508: I/DD(1736): MyCenterFragment======onCreateView======01-21 03:20:56.508: I/DD(1736): MyCenterFragment======onActivityCreated======01-21 03:20:56.516: I/DD(1736): MyCenterFragment======onStart======01-21 03:20:56.520: I/DD(1736): MyCenterFragment======onResume======

当滑到第四个Fragment的时候就会销毁第二个Fragment的视图，由于他是最后一个Fragment，此时不会创建其他Fragment。

也就是说在ViewPager中在头尾部分维护着两个Fragment，在其他位置维护着三个Fragment。

0 0