HERE IS THE VIDEO: https://www.youtube.com/watch?v=eush2bY0XlQ&feature=youtu.be&hd=1
So here is the plot :
1) I have a navigation drawer.
2) By Clicking on one of the list item a tab layout (fragment) is inflated .
3) So I get a tab layout (with 6 tabs) working besides navigation drawer i.e navigation drawer and tab_layout can be used simultaneously.
4) Content of every tab is a Different fragement.
Problem :
When I launch the application and click the list-item with the tab fragment the content of the tab_fragment is inflated normally.
But when i click it again all the content of the first and second tab dissappear.
And reappear only when when i swipe till the third tab and swipe back again .
In simple words ,
On Calling the static new Instance method of Tab_Fragment for the first time is works fine .
On Calling it again the content of the first and second tab disappear and reappear
only when I swipe till the 3rd tab and come back.
I know it sounds weird.
Code:
My Tab_Fragment To Create it I call its New Instance From MainActivity.
public class Tab_Activity extends Fragment {
private final Handler handler = new Handler();
public PagerSlidingTabStrip tabs;
private ViewPager pager;
private MyPagerAdapter adapter;
public final static String TAG = Tab_Activity.class.getSimpleName();
public Tab_Activity() {
// TODO Auto-generated constructor stub
}
public static Tab_Activity newInstance() {
return new Tab_Activity();
}
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setRetainInstance(true);
}
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
return inflater.inflate(R.layout.tab_layout, container, false);
}
@Override
public void onViewCreated(View v, Bundle savedInstanceState) {
// TODO Auto-generated method stub
super.onViewCreated(v, savedInstanceState);
tabs = (PagerSlidingTabStrip) v.findViewById(R.id.tabs);
pager = (ViewPager) v.findViewById(R.id.pager);
adapter = new MyPagerAdapter(getActivity().getSupportFragmentManager());
pager.setAdapter(adapter);
final int pageMargin = (int) TypedValue.applyDimension(TypedValue.COMPLEX_UNIT_DIP, 4, getResources()
.getDisplayMetrics());
pager.setPageMargin(pageMargin);
tabs.setViewPager(pager);
tabs.setIndicatorColorResource(R.color.grey);
tabs.setTextColorResource(R.color.black);
}
public class MyPagerAdapter extends FragmentPagerAdapter {
private final String[] TITLES = { " ELECTRONICS ", " IT ", " COMPUTER "," EXTC ", "INSTRUMENTATION"," MCA " };
public MyPagerAdapter(FragmentManager fm) {
super(fm);
}
@Override
public CharSequence getPageTitle(int position) {
return TITLES[position];
}
@Override
public int getCount() {
return TITLES.length;
}
@Override
public Fragment getItem(int position) {
return Courses.newInstance(position);
}
}
}
The Courses Fragment :
public class Courses extends Fragment {
LinearLayout ll ;
private static final String ARG_POSITION = "position";
public static PagerSlidingTabStrip tab ;
private int position;
public static Courses newInstance(int position) {
Courses f = new Courses();
Bundle b = new Bundle();
b.putInt(ARG_POSITION, position);
f.setArguments(b);
return f;
}
@SuppressLint("NewApi")
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
position = getArguments().getInt(ARG_POSITION);
setRetainInstance(true);
}
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
return inflater.inflate(R.layout.dept_main,container,false);
}
@Override
public void onViewCreated(View v, Bundle savedInstanceState) {
// TODO Auto-generated method stub
super.onViewCreated(v, savedInstanceState);
// generate ID's :
TextView h_name = (TextView) v.findViewById(R.id.tv_dept_name);
TextView f_info = (TextView) v.findViewById(R.id.tv_dept_info);
TextView h_vision = (TextView) v.findViewById(R.id.header_vision);
TextView f_vision = (TextView) v.findViewById(R.id.footer_vision);
TextView h_mission = (TextView) v.findViewById(R.id.header_mission);
TextView f_mission = (TextView) v.findViewById(R.id.footer_mission);
TextView h_eoe = (TextView) v.findViewById(R.id.header_EOE);
TextView f_eoe = (TextView) v.findViewById(R.id.footer_EOE);
TextView h_intake = (TextView) v.findViewById(R.id.header_intake);
TextView f_intake = (TextView) v.findViewById(R.id.footer_intake);
h_intake.setText(R.string.h_intake);
h_mission.setText(R.string.h_mission);
h_vision.setText(R.string.h_vision);
h_eoe.setText(R.string.h_eoe);
switch(position){
case 0 :
//Electronics
h_name.setText("Electronics");
f_info.setText(R.string.ug_course);
f_vision.setText(R.string.v_etrx);
f_mission.setText(R.string.m_etrx);
f_eoe.setText("1984");
f_intake.setText(R.string.intake_etrx);
break ;
case 1 :
h_name.setText("Information Technology");
f_info.setText(R.string.ug_course);
f_vision.setText(R.string.v_it);
f_mission.setText(R.string.m_it);
f_eoe.setText("1984");
f_intake.setText(R.string.intake_it);
break ;
case 2 :
h_name.setText("Computer Science");
f_info.setText(R.string.ug_course);
f_vision.setText(R.string.v_coms);
f_mission.setText(R.string.m_coms);
f_eoe.setText("1984");
f_intake.setText(R.string.intake_coms);
break ;
case 3 :
h_name.setText("Electronics And Telecommunication");
f_info.setText(R.string.ug_course);
f_vision.setText(R.string.v_extc);
f_mission.setText(R.string.m_extc);
f_eoe.setText("1984");
f_intake.setText(R.string.intake_extc);
break ;
case 4 :
h_name.setText("Instrumentation");
f_info.setText(R.string.ug_course);
f_vision.setText(R.string.v_it);
f_mission.setText(R.string.m_it);
f_eoe.setText("1984");
f_intake.setText(R.string.intake_it);
break ;
case 5 :
h_name.setText("Master of Computer Applications");
f_info.setText("Post Graduation Course.(PG)");
f_vision.setText(R.string.v_mca);
f_mission.setText(R.string.m_mca);
f_eoe.setText("1984");
f_intake.setText(R.string.intake_mca);
break;
}
}
}
(Comment for any clarifications ! )
