I'm trying to develop a tab based application. Each tab has its fragment. One of them has ViewPager, and ViewPager has its own pages. I move from to another by scrolling in this viewpager.
When I open the application for the first time, there is no problem. However, when I move from this tab, and come to it again, it does not show viewpager content, it does not fire FragmentPagerAdapter class.
Tab A - Tab B - Tab C
Tab C Fragment has ViewPage.
ViewPage has its own pages.
public class FragmentC extends Fragment {
public static final String ARG_SECTION_NUMBER = "section_number";
static ViewPager C_mViewPager;
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
C_mViewPager = (ViewPager)inflater.inflate(R.layout.fragmentC, container,false);
C_SectionsPagerAdapter mC_PagerAdapter=new C_SectionsPagerAdapter(MainActivity.fragmentManagerv4);
C_mViewPager.setAdapter(mC_PagerAdapter);
return C_mViewPager;
}
public class C_SectionsPagerAdapter extends FragmentPagerAdapter {
public C_SectionsPagerAdapter (FragmentManager fm) {
super(fm);
}
@Override
public Fragment getItem(int i) {
Fragment fragment = null ;
Bundle args;
switch (i) {
case 0:
fragment=new A_SubFragment();
break;
case 1:
fragment = new B_SubFragment();
break;
case 2:
fragment = new C_SubFragment();
break;
case 3:
fragment = new D_SubFragment();
break;
}
return fragment;
}
@Override
public int getCount() {
return 4;
}
@Override
public CharSequence getPageTitle(int position) {
switch (position) {
case 0: return getString(R.string.title_section1).toUpperCase();
case 1: return getString(R.string.title_section2).toUpperCase();
case 2: return getString(R.string.title_section3).toUpperCase();
case 3: return getString(R.string.title_section4).toUpperCase();
}
return null;
}
}
public static class A_SubFragment extends Fragment {
public A_SubFragment() {
}
public static final String ARG_SECTION_NUMBER = "section_number";
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
RelativeLayout theLayout=(RelativeLayout)inflater.inflate(R.layout.a_sub_fragment, container,false);
//...
return theLayout;}}
}
Fragment C;
<android.support.v4.view.ViewPager xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:id="@+id/pager"
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:context=".MainActivity" />
