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why viewPage keeps previous viewpage content after clicking back button

I have a problem when I click back button while using ViewPage. When I enter to ViewPage after going out and coming back, it shows me the content of previous ViewPage, not new ones.
I'm entering to ViewPage from a RecyclerView and I want to change ViewPage content by clicking on items of RecyclerView.
So my problem is that why ViewPage is not reset to new content?

before committing the fragment do this! it won't remember the last open fragment and please read about BackStack management in fragments here
Fragment newFragment = new ExampleFragment();
FragmentTransaction transaction = getSupportFragmentManager().beginTransaction();
// Replace whatever is in the fragment_container view with this fragment,
// and add the transaction to the back stack
transaction.replace(R.id.fragment_container, newFragment);
transaction.addToBackStack(null);
// Commit the transaction
transaction.commit();

If by saying ViewPage you mean 'ViewPager'. Then you must be displaying the content using a fragment. So when you open the ViewPager screen 'Replace' the fragment with new content.
Use this syntax:
getSupportFragmentManager().beginTransaction()
.replace(R.id.container, new Frag_four()).commit();
Or this one
getFragmentManager().beginTransaction()
.replace(R.id.container, new Frag_four()).commit();
You are facing this issue because may be you are not removing previous content from the container. So just give it a try.
EDIT:
In your fragment displaying activity place the following code in 'OnDestory' method.
getFragmentManager().beginTransaction().remove(getFragmentManager().findFragmentById(R.id.your_container)).commit();
This will empty the container. So next time it will load the new fragment.

Android: Fragments act unexpected (suddenly transparent?)

I have a problem with my fragments. I use this code to navigate between the fragments:
Between the "main" fragments (without backstack, because I want the user to exit when he presses back (it works)):
FragmentManager fragmentManager = getFragmentManager();
final FragmentTransaction ft = fragmentManager.beginTransaction();
ft.setCustomAnimations(R.anim.slide_in_up_honeycomb, R.anim.slide_out_up_honeycomb);
ft.replace(R.id.container, NewsFragment.newInstance(position + 1), NewsFragment.class.getSimpleName());
ft.commit();
and between the "inner" fragments (with backstack):
FragmentTransaction ft = ((Activity) getActivity()).getFragmentManager().beginTransaction();
Fragment nextFragment = LexikonDetailFragment
.newInstance(item);
ft.setCustomAnimations(R.anim.slide_in_up_honeycomb, R.anim.slide_out_up_honeycomb);
ft.replace(R.id.container, nextFragment);
ft.addToBackStack(LexikonDetailFragment.class.getSimpleName());
ft.commit();
But in the following case:
fragment A -> fragment A1
fragment A1 -> fragment B
Press back button (should end the app)
-> goes back to fragment A1
happens:
Image
It looks like the A1 fragment doesnt gets removed from the backstack and stays in the background. I thought one possible solution could be to set to all fragments a white background..but this wouldn't fix the problem, it would just hide it. So what could be a possible solution?

Okay, i found a solution:
I had to remove the inner fragments manualy via the command:
fm.popBackStack(null, FragmentManager.POP_BACK_STACK_INCLUSIVE);
I call this command each time my "outer" fragment changes. The inner ones get removed and tada...it works like a charm :)

Fragment with MapView is never removed from FragmentManager

I have a Fragment with MapView in it. I add Fragment to container with following code:
Fragment fragment = new MyLocationFragment()
String tag= fragment.getClass().getName();
FragmentTransaction transaction = fm.beginTransaction();
transaction.setCustomAnimations(R.anim.slide_in_right, R.anim.slide_out_left,
R.anim.slide_in_left, R.anim.slide_out_right);
transaction.replace(R.id.container, fragment, tag);
transaction.addToBackStack(null);
transaction.commit();
Now when user presses back, this Fragment is supposed to be removed from FragmentManager. But if execute this code :
Fragment fragment = getSupportFragmentManager().findFragmentByTag(MyLocationFragment.class.getName());
It never returns null, even if I replace other fragments in same container. What can I do to remove Fragment from FragmentManager? Am I doing something wrong here ?

When an activity is destroyed, its FragmentManagersaves out its list of fragments. When the activity is recreated, the new FragmentManager retrieves the list and recreates the listed fragments to make everything as it was before.
[Refer to book "Android Programming The Big Nerd Ranch Guide" P150]
So your should remove fragment from fragmentmanager.
Refer to this Q&A Remove old Fragment from fragment manager
Your question maybe duplicate with thisHow to get a Fragment to remove itself, i.e. its equivalent of finish()?

how can i handle the fragment1 onclick perform in fragment2?

I am develop the app using the fragments and i am facing one fragment1 adding to the another fragment2
fragment1 onclicks performing fragment2 .I didn't findout the solution for that. please guide anyone know
I am using the following code to add the fragment
Fragment2 fragment2=new Fragment2();
FragmentManager fragmentManager = activity.getFragmentManager();
android.app.FragmentTransaction ft=fragmentManager.beginTransaction();
ft.add(R.id.container,fragment2);
ft.hide(new Fragment1());
ft.addToBackStack(Fragment1.class.getName());
ft.commit();
The above to use adding onefragment1 adding to fragment2.Fragment1 onclicks perform to fragment2 . i didn't findout mistake.
please guide me anyone know .Advance thanks to all

nested Fragments are not recommended and for adding a fragment to a container from another Fragment use the parent Activity to do so , you can define a function inside Parent Activity which replace current Fragment with your second Fragment and call it from your first.

Adding a fragment to another fragment is the concept of nested fragments and not recommended. You should replace the fragment instead of adding. Use the following:
Fragment fragment = new Fragment2();
FragmentManager fragmentManager = getFragmentManager();
fragmentManager.beginTransaction().addToBackStack("fragment").replace(R.id.frame_container, fragment).commit();

Manually adding Fragment to BackStack

I'm currently using a ViewGroup (SwipeyTab implementation) to switch between Fragments. However, some Fragment "pages" get replaced by other Fragments on the same Tab, so I initially tried:
FragmentTransaction ft = fragment.getFragmentManager().beginTransaction();
ft.remove(currentFragment);
ft.add(newFragment,"");
ft.commit();
That code would remove the current fragment but not add newFragment (from Logcat, it would get instantiated but not appear).
I ended up adding it in the FragmentPagerAdapter.getItem(int position) call based on current state (based on this: Replace Fragment inside a ViewPager). However, I'd like to be able to add each newly replaced fragment to be part of the back stack.
I tried adding to backstack before removing the fragment:
currentFragment.getFragmentManager().beginTransaction().addToBackStack(null).commit();
FragmentTransaction ft = fragment.getFragmentManager().beginTransaction();
ft.remove(currentFragment);
ft.commit();
and that didn't work - it added the last fragment to the backstack, so when I pressed back, it would just reload the current fragment.
Is there anyway I can add a fragment to the backstack that has been replaced in the "non traditional" way?