[英]How to resume child fragments on parent fragment resume
I have a fragment called the MainFragment
with a TabLayout
. 我有一个名为
MainFragment
的片段,带有TabLayout
。 The TabLayout
has two tabs with a fragment each. TabLayout
有两个选项卡,每个选项卡都有一个片段。 Lets call it Fragment A
and Fragment B
. 让我们称之为
Fragment A
和Fragment B
When I open the MainFragment
, Fragment A
and Fragment B
are populated within the TabLayout
as expected. 当我打开
MainFragment
, Fragment A
和Fragment B
按预期填充在TabLayout
中。 When I resume MainFragment
, Fragment A
and Fragment B
are not resumed, and I get two empty tabs. 当我恢复
MainFragment
, Fragment A
和Fragment B
没有恢复,我得到两个空标签。
My MainFragment
looks like this 我的
MainFragment
看起来像这样
@Override
public View onCreateView(
LayoutInflater inflater, @Nullable ViewGroup container,
@Nullable Bundle savedInstanceState) {
return inflater.inflate(R.layout.main_fragment, null);
}
@Override
public void onViewCreated(View view, @Nullable Bundle savedInstanceState) {
super.onViewCreated(view, savedInstanceState);
Injector.component().inject(this);
setupViewPager(viewPager);
tabLayout.setupWithViewPager(viewPager);
}
private void setupViewPager(ViewPager viewPager) {
ViewPagerAdapter adapter = new ViewPagerAdapter(getFragmentManager());
adapter.addFragment(new FragmentA(), "Fragment A");
adapter.addFragment(new FragmentB(), "Fragment B");
viewPager.setAdapter(adapter);
}
How do I solve this? 我该如何解决这个问题?
由于Fragments A
和B
是MainFragment
子片段, MainFragment
使用getChildFragmentManager()
而不是getFragmentManager()
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