[英]Android Viewpager inside of Viewpager not showing layout
我的任务是创建一个非常非传统的布局,只能通过另一个viewpager的第二个窗格内的viewpager完成,谢天谢地,外部viewpager需要被锁定,因此任务更加真实,但是出现了意想不到的问题。内部viewpager加载onCreateView永远不会被调用,我可以看到它是左右滑动,所以内部viewpager设置但它不会加载任何内部视图由于一些奇怪的原因,任何帮助将有很长的路要走
主要活动
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_home_fragment);
pagePosition = 0;
setupViews();
}
private void setupViews() {
//setup images to be changed later
ivCategory = (ImageView) findViewById(R.id.ivCatergory);
ivHome = (ImageView) findViewById(R.id.ivHome);
ivProfile = (ImageView) findViewById(R.id.ivProfile);
//setup the viewpager
pager = (CustomViewPager) findViewById(R.id.viewpager);
//add fragments to the fragment array
pageList.add(NavigationFragment.newInstance(0, getApplicationContext(), this));
pageList.add(NavigationFragment.newInstance(1, getApplicationContext(), this));
pageList.add(NavigationFragment.newInstance(0, getApplicationContext(), this));
// initialize the page adapter
pageAdapter = new FragmentHomeAdapter(getSupportFragmentManager(), pageList);
//set the page adapter to the viewpager
pager.setAdapter(pageAdapter);
//set homepage to be first
pager.setCurrentItem(1);
//disable swiping to mimic iphone behaviour
pager.setPagingEnabled(false);
}
viewpager
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
int pageType = getArguments().getInt(PAGE_TYPE);
View v;
if (pageType == 1) {//all inner fragments will happen here
v = inflater.inflate(R.layout.fragment_container, container, false);
//setup the inner viewpager
pager = (CustomViewPager) v.findViewById(R.id.viewpager);
pageList.add(HomeFragment.newInstance(0, context, getActivity()));
pageList.add(HomeFragment.newInstance(1, context, getActivity()));
// initialize the page adapter
pageAdapter = new FragmentHomeAdapter(getActivity().getSupportFragmentManager(), pageList);
//set the page adapter to the viewpager
pager.setAdapter(pageAdapter);
pager.setPagingEnabled(true);
}
return v;
}
内部观察者
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
View v;
v = inflater.inflate(R.layout.fragment_list_feed, container, false);
lv = (ListView) v.findViewById(R.id.lvFeed);
listAdapter = new ListHomeAdapter(getArguments().getInt(PAGE_TYPE), feedListItems, getActivity());
//add header
header = (ViewGroup) inflater.inflate(R.layout.list_item_header, lv, false);
lv.addHeaderView(header, null, false);
lv.setAdapter(listAdapter);
if (getArguments().getInt(PAGE_TYPE) == 0) {
new getFeedListItems().execute();
} else {
new getFeedListItems().execute();
}
Toast.makeText(context, "This never shows",
Toast.LENGTH_SHORT).show();
return v;
}
在另一个片段中显示片段时,使用getChildFragmentManager()而不是getSupportFragmentManager()
以这种方式初始化您的pageAdapter:
pageAdapter = new FragmentHomeAdapter(getChildFragmentManager(), pageList);
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