[英]How to save data when fragment in BottomNavigationView is changed?
In my app, I use BottomNavigationView
and on each fragment I have some elements. 在我的应用程序中,我使用
BottomNavigationView
,在每个片段上我都有一些元素。 On changing fragments my data that download is lost. 在更改片段时,我下载的数据丢失了。 How can I solve it?
我该如何解决?
You can use ViewPager.setOffscreenPageLimit()
like this: 您可以像这样使用
ViewPager.setOffscreenPageLimit()
:
ViewPager pager = (ViewPager) findViewById(R.id.viewPager);
pager.setOffscreenPageLimit(2); //2 is number of pages that you want keep in memory and don't load again on click at its item.
声明:本站的技术帖子网页,遵循CC BY-SA 4.0协议,如果您需要转载,请注明本站网址或者原文地址。任何问题请咨询:yoyou2525@163.com.