FragmentTabHost未在android中创建片段内的视图
FragmentTabHost未在android中创建片段内的视图
提问于 2014-01-11 23:47:12
我在更改标签主机上的视图时遇到了一个问题--当我选择一个标签时，内容保持空白。
据我所知，在子片段上没有调用onCreateView 。onMenuCreate运行得很好，因为菜单会按预期的方式变化。
public class PatientTabFragment extends Fragment {
private FragmentTabHost mTabHost;
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
mTabHost = new FragmentTabHost(getActivity());
mTabHost.setup(getActivity(), getChildFragmentManager());
mTabHost.addTab(mTabHost.newTabSpec("simple").setIndicator("Info"),
NewPatientFragment.class, null);
mTabHost.addTab(mTabHost.newTabSpec("contacts").setIndicator("Notes"),
NoteListFragment.class, null);
return mTabHost;
}
@Override
public void onDestroyView() {
super.onDestroyView();
mTabHost = null;
}
}回答 3
Stack Overflow用户
发布于 2014-01-12 00:14:22
根据the docs的说法
允许将片段对象用于其选项卡内容的
特殊TabHost。将其放在视图层次结构中时，在膨胀层次结构后，必须调用(Context，FragmentManager，int)来完成选项卡主机的初始化。
(强调我的)
所以我建议这样做：
public class PatientTabFragment extends Fragment {
private FragmentTabHost mTabHost;
private boolean createdTab = false;
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
mTabHost = new FragmentTabHost(getActivity());
mTabHost.setup(getActivity(), getChildFragmentManager());
mTabHost.addTab(mTabHost.newTabSpec("simple").setIndicator("Info"),
NewPatientFragment.class, null);
mTabHost.addTab(mTabHost.newTabSpec("contacts").setIndicator("Notes"),
NoteListFragment.class, null);
return mTabHost;
}
public void onResume(){
if (!createdTab){
createdTab = true;
mTabHost.setup(getActivity(), getActivity().
getSupportedFragmentManager());
}
}
@Override
public void onDestroyView() {
super.onDestroyView();
mTabHost = null;
}
}Stack Overflow用户
发布于 2015-09-11 16:04:12
现在我们可以使用TabLayout和ViewPager来做这些事情了。This is a good guide to use it.Here是我的代码：
viewPager=(NonSwipeableViewPager)view.findViewById(R.id.circleresdyn_viewpager);
tabLayout=(TabLayout)view.findViewById(R.id.circleresdyn_tablayout);
if (viewPager != null) {
Adapter adapter = new Adapter(((AppCompatActivity)activity).getSupportFragmentManager());
ContentFragment con=new ContentFragment();
con.setArguments(bundleForFramgnet);
MemberFragment memberFragment=new MemberFragment();
memberFragment.setArguments(bundleForFramgnet);
CirResDynTileFragment cirResDynTileFragment=new CirResDynTileFragment();
cirResDynTileFragment.setArguments(bundleForFramgnet);
adapter.addFragment(cirResDynTileFragment, "Tab1");
adapter.addFragment(con, "Tab2");
adapter.addFragment(memberFragment, "Tab3");
viewPager.setAdapter(adapter);
viewPager.setOffscreenPageLimit(3);
tabLayout.setTabGravity(TabLayout.GRAVITY_CENTER);
tabLayout.setupWithViewPager(viewPager);
tabLayout.getTabAt(0).select();
}Stack Overflow用户
发布于 2015-09-11 18:44:46
检查这段代码的和平。它可能会对您有所帮助：
import android.app.Fragment;
public class Change_password extends Fragment {
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
View rootView = inflater.inflate(R.layout.change_password, container,false);
setTabs();
return rootView;
}
private void setTabs() {
try {
addTab("Airlines", R.drawable.tab_home, HomeActivity_bkp.class);
addTab("Advance Search", R.drawable.tab_search,
AdvanceSearchAcitivty.class);
addTab("Booking", R.drawable.tab_home, Booking.class);
addTab("Settings", R.drawable.tab_search, SettingAcitivty.class);
} catch (Exception e) {
Toast.makeText(getApplicationContext(), e.toString(),
Toast.LENGTH_LONG).show();
// TODO: handle exception
}
}
private void addTab(String labelId, int drawableId, Class<?> c) {
TabHost tabHost = getTabHost();
Intent intent = new Intent(this, c);
TabHost.TabSpec spec = tabHost.newTabSpec("tab" + labelId);
View tabIndicator = LayoutInflater.from(this).inflate(
R.layout.tab_indicator, getTabWidget(), false);
TextView title = (TextView) tabIndicator.findViewById(R.id.title);
title.setText(labelId);
ImageView icon = (ImageView) tabIndicator.findViewById(R.id.icon);
icon.setImageResource(drawableId);
spec.setIndicator(tabIndicator);
spec.setContent(intent);
tabHost.addTab(spec);
}页面原文内容由Stack Overflow提供。腾讯云小微IT领域专用引擎提供翻译支持
原文链接：
https://stackoverflow.com/questions/21064298
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