[英]Drawer navigation with Tabs
Googling for three days. 谷歌搜索三天。 Can't help myself. 不能帮助自己。 I have navigation drawer and fragment and everything works perfect except tabs in fragment. 我有导航抽屉和片段,并且除片段中的选项卡外,其他所有东西都完美运行。 This is part of MainActiviti Class... 这是MainActiviti类的一部分...
case R.id.linearLayoutHome:
fragment = new HomeFragment();
break; //this one works well
case R.id.linearLayoutHome:
fragment = new CategoryFragment(); //error showing here
break; //this one doesn't work
Calling fragment... 正在呼叫片段...
FragmentManager fragmentManager = getFragmentManager();
fragmentManager.beginTransaction().replace(R.id.container, fragment).commit();
Home fragment which works perfect: 完美的家庭片段:
public class HomeFragment extends Fragment {
public HomeFragment() {
}
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
View rootView = inflater.inflate(R.layout.fragment_home, container, false);
return rootView;
}
}
CategoryFragment which doesn't work. CategoryFragment不起作用。 I think this is because of fragment in fragment: 我认为这是由于片段中的片段:
public class CategoriesActivity extends Fragment {
SectionsPagerAdapter mSectionsPagerAdapter;
ViewPager mViewPager;
public CategoriesActivity(){
}
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
View rootView = inflater.inflate(R.layout.fragment_home, container, false);
mSectionsPagerAdapter = new SectionsPagerAdapter(getChildFragmentManager());
mViewPager = (ViewPager) rootView.findViewById(R.id.pager);
mViewPager.setAdapter(mSectionsPagerAdapter);
return rootView;
}
public class SectionsPagerAdapter extends FragmentPagerAdapter {
public SectionsPagerAdapter(FragmentManager fm) {
super(fm);
}
@Override
public Fragment getItem(int position) {
Fragment fragment = new DummySectionFragment();
Bundle args = new Bundle();
args.putInt(DummySectionFragment.ARG_SECTION_NUMBER, position + 1);
fragment.setArguments(args);
return fragment;
}
@Override
public int getCount() {
return 2;
}
@Override
public CharSequence getPageTitle(int position) {
Locale l = Locale.getDefault();
switch (position) {
case 0:
return getString(R.string.title1).toUpperCase(l);
case 1:
return getString(R.string.title2).toUpperCase(l);
}
return null;
}
}
public static class DummySectionFragment extends Fragment {
public static final String ARG_SECTION_NUMBER = "section_number";
public DummySectionFragment() {
}
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
View rootView = inflater.inflate(R.layout.fragment_tabbed_dummy, container, false);
TextView dummyTextView = (TextView) rootView.findViewById(R.id.section_label);
dummyTextView.setText(Integer.toString(getArguments().getInt(ARG_SECTION_NUMBER)));
return rootView;
}
}
}
I need some solution. 我需要一些解决方案。 No more ideas. 没有更多的想法。
STEP 1: Your onCreateView()
should look like this: 步骤1:您的onCreateView()
应该如下所示:
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
View rootView = inflater.inflate(R.layout.fragment_home, container, false);
return rootView;
}
and add this method to your Fragment
: 并将此方法添加到您的Fragment
:
@Override
public void onViewCreated(View view, Bundle savedInstanceState){
mSectionsPagerAdapter = new SectionsPagerAdapter(getChildFragmentManager());
mViewPager = (ViewPager) view.findViewById(R.id.pager);
mViewPager.setAdapter(mSectionsPagerAdapter);
}
STEP 2: Make sure that your Activity
extends from FragmentActivity
or ActionBarActivity
. 步骤2:确保您的Activity
从FragmentActivity
或ActionBarActivity
扩展。
STEP 3: Make sure that you are using android.support.v4.app.Fragment
and not android.app.Fragment
步骤3:确保您使用的是android.support.v4.app.Fragment
而不是android.app.Fragment
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