Could you anyone advice me how to implement saveFragmentInstanceState() or some other methods to retrieving fragment instance when back button is pressed. I use own stack for fragment, viz code bellow:
public class stackA extends ActivityInTab {
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
Log.i("StackA", "onCreate");
if(savedInstanceState == null){
navigateTo(new fragmentA());
}
}
}
Next there is implementation of ActivityInTab class. I think for this class must be implemented methods for saving and retrieving fragment state but still I can't find the way how to do this.
abstract class ActivityInTab extends FragmentActivity {
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_in_tab);
Log.i("ActivityInTab", "onCreate");
}
protected void navigateTo(Fragment newFragment) {
FragmentManager manager = getSupportFragmentManager();
FragmentTransaction ft = manager.beginTransaction();
ft.replace(R.id.content, newFragment);
ft.setTransition(FragmentTransaction.TRANSIT_FRAGMENT_OPEN);
ft.addToBackStack(null);
ft.commit();
}
#Override
public void onBackPressed() {
Log.i("ActivityInTab", "onBackPressed");
FragmentManager manager = getSupportFragmentManager();
if (manager.getBackStackEntryCount() > 1) {
super.onBackPressed();
} else {
// Otherwise, ask user if he wants to leave :)
//showExitDialog();
super.onBackPressed();
}
}
}
And finally, this is imlementation of Fragments:
public class fragmentA extends Fragment {
private LinearLayout ll;
private FragmentActivity fa;
private String textViewText;
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
Log.i("Fragment A", "onCreateView");
fa = super.getActivity();
ll = (LinearLayout) inflater.inflate(R.layout.fragmenta, container,
false);
Button next = (Button) ll.findViewById(R.id.button1);
Button randomBtn = (Button) ll.findViewById(R.id.random_button);
final TextView randomText = (TextView) ll
.findViewById(R.id.random_textview);
next.setOnClickListener(new View.OnClickListener() {
public void onClick(View view) {
((ActivityInTab) getActivity()).navigateTo(new
fragmentB());
}
});
randomBtn.setOnClickListener(new View.OnClickListener() {
public void onClick(View v) {
// TODO Auto-generated method stub
randomText.setText(String.valueOf(Math.random()));
textViewText = randomText.getText().toString();
}
});
if (savedInstanceState != null) {
randomText.setText(savedInstanceState.getString("TextView"));
}
return ll;
}
#Override
public void onActivityCreated(Bundle savedInstanceState) {
super.onActivityCreated(savedInstanceState);
// setRetainInstance(true);
}
#Override
public void onSaveInstanceState(Bundle outState) {
super.onSaveInstanceState(outState);
outState.putString("TextView", textViewText);
}
}
I'm able to save instance state only for orientation changes using onSaveInstanceState(Bundle outState), but no for back button.
I would be very grateful for any advice, thanks.
In the onBackPressed Method you have access to the FragmentManager which can retrieve any fragment for you using the FragmentManager methods "findFragmentById" or "findFragmentByTag".
You can get direct access to any fragment whos state you want to save using either of those two methods depending on how you added the fragments.
Related
I search everywhere and for the solution but not find it, I need some help.
I have an app that has Two activity's, Activity A and Activity B, but B have fragments, the first fragment from B, have an important data that I don't want to lose when the user press back when going to Activity A.
My problem is this every time I'm back to Activity A and go to B, my Data go empty because android clear it, so I made some search and changes on the code and still not find the solution. Now my code :
ACTIVITY A
fbReceive.setOnClickListener(new View.OnClickListener() {
public void onClick(View v) {
startActivity(new Intent(MainActivity.this, OmniActivity.class));
}
});
I call B from this line and when they go to B this is the code :
ACTIVITY B
public class OmniActivity extends BaseActivity {
private View parent_view;
private TabLayout tab_layout;
FragmentOmni fragmentOmni = new FragmentOmni();
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_omni_om);
parent_view = findViewById(R.id.container);
Tools.setSystemBarColor(this, R.color.new_purple_O200);
openFragment(fragmentOmni);
initToolbar();
initComponent();
}
public void openFragment(final Fragment fragment) {
FragmentManager fragmentManager = getSupportFragmentManager();
FragmentTransaction transaction = fragmentManager.beginTransaction();
transaction.replace(R.id.containerView, fragment, fragment.getTag());
transaction.addToBackStack(null);
transaction.commit();
}
#Override
public void onBackPressed() {
Intent intent = new Intent(this, MainActivity.class);
startActivityForResult(intent, 1);
}
private void initToolbar() {
Toolbar toolbar = (Toolbar) findViewById(R.id.toolbar);
toolbar.setNavigationIcon(R.drawable.ic_arrow_back_black_24dp);
setSupportActionBar(toolbar);
getSupportActionBar().setTitle("Voltar");
getSupportActionBar().setDisplayHomeAsUpEnabled(true);
toolbar.getNavigationIcon().setColorFilter(getResources().getColor(android.R.color.white), PorterDuff.Mode.SRC_ATOP);
toolbar.setNavigationOnClickListener(new View.OnClickListener(){
#Override
public void onClick(View view) {
Intent intent = new Intent(OmniActivity.this, MainActivity.class);
startActivityForResult(intent, 1);
}
});
}
And when the application executes OpenFragment() they go to this code from Fragment :
FRAGMENT A
public class FragmentOmni extends Fragment {
RecyclerView recyclerView;
MDOmniturn controller;
List<HashMap<String, String>> listproduct;
private ArrayList<Product> producttypelist;
Product tpobjproduct;
private ActionMode actionMode;
private ActionModeCallback actionModeCallback;
private ListProductAdapter lpAdapter;
private NestedScrollView nested_scroll_view;
private ImageButton bt_toggle_input;
private Button bt_hide_input;
private View lyt_expand_input;
EditText edOmni, edMani,edEan ;
LinearLayout layoutNoResult;
Handler time;
TextWatcher textexample;
private ProgressBar progressBarProduct;
LinearLayout linearLayout;
public FragmentOmni() {
}
public static FragmentOmni newInstance() {
FragmentOmni fragment = new FragmentOmni();
return fragment;
}
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
}
#Override
public void onActivityCreated(#Nullable Bundle savedInstanceState) {
super.onActivityCreated(savedInstanceState);
if(savedInstanceState != null){
producttypelist = savedInstanceState.getParcelableArrayList("list");
}
}
#Override
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
View root = inflater.inflate(R.layout.fragment_omni, container, false);
return root;
}
#Override
public void onSaveInstanceState(Bundle outState) {
outState.putParcelableArrayList("list", producttypelist);
super.onSaveInstanceState(outState);
}
#Override
public void onViewCreated(View view, Bundle savedInstanceState) {
if (savedInstanceState != null) {
producttypelist = savedInstanceState.getParcelableArrayList("list");
}
initexpand(view);
linearLayout = (LinearLayout) view.findViewById(R.id.container);
edOmni = (EditText) view.findViewById(R.id.edOmni);
edMani = (EditText) view.findViewById(R.id.edBManifesto);
edEan = (EditText) view.findViewById(R.id.edEan);
progressBarProduct = (ProgressBar) view.findViewById(R.id.progressBarProduct);
layoutNoResult = (LinearLayout) view.findViewById(R.id.layoutNoResult);
recyclerView = (RecyclerView) view.findViewById(R.id.recyclerView);
recyclerView.setLayoutManager(new LinearLayoutManager(getActivity()));
recyclerView.addItemDecoration(new LineItemDecoration(getActivity(), LinearLayout.VERTICAL));
recyclerView.setHasFixedSize(true);
controller = new MDOmniturn(getActivity());
producttypelist = new ArrayList<>();
listproduct = new ArrayList<>();
addListenerTextChange(edOmni);
//set data and list adapter
lpAdapter = new ListProductAdapter(getActivity(), producttypelist);
recyclerView.setAdapter(lpAdapter);
lpAdapter.setOnClickListener(new ListProductAdapter.OnClickListener() {
#Override
public void onItemClick(View view, Product obj, int pos) {
if (lpAdapter.getSelectedItemCount() > 0) {
enableActionMode(pos);
} else {
// read the inbox which removes bold from the row
Product product = lpAdapter.getItem(pos);
Toast.makeText(getActivity(), "Read: " + product.prd_description, Toast.LENGTH_SHORT).show();
}
}
#Override
public void onItemLongClick(View view, Product obj, int pos) {
enableActionMode(pos);
}
});
actionModeCallback = new ActionModeCallback();
}
The savedInstanceState from FRAGMENT A always go NULL, what i'm doing wrong?
Replace your code to the following order
#Override
public void onSaveInstanceState(Bundle outState) {
super.onSaveInstanceState(outState);
outState.putParcelableArrayList("list", producttypelist);
}
It might be possible you are expecting data during the wrong state too.
For example, the savedInstanceState will always be null the first time an Activity is started which also points to your fragment, but may be non-null if an Activity is destroyed during rotation, because onCreate is called each time activity starts or restarts.
This line transaction.addToBackStack(null); is unnecessary. You can save the fragment state on its onStop() and onPause() and restore onResume() and onCreate().
You can remove the onBackPressed() in Activity B now
Alternatively, you can use Shared Preferences. When exiting the application, (onBackPressed, onPause ...) save the item you want. For Example the high score of a game.
activity.getSharedPreferences(getString(R.string.app_name),
Context.MODE_PRIVATE).edit().putInt("score", highScore).apply();
And retrieving the score would be:
int value = activity.getSharedPreferences(getString(R.string.app_name),
Context.MODE_PRIVATE).getInt("score", 0);
The buttons don't work when I change into landscape mode and back to portrait. Anyways, here is my code:
public class fragmentone extends Fragment {
Button biological;
Button natural;
View myView;
#Override
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
myView = inflater.inflate(R.layout.firstlay, container, false);
biological = (Button) myView.findViewById(R.id.biological);
biological.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
BiologicalHazards fragment = new BiologicalHazards();
FragmentManager fragmentManager = getActivity().getSupportFragmentManager();
fragmentManager.beginTransaction().addToBackStack("hi")
.setCustomAnimations(android.R.anim.fade_in, android.R.anim.fade_out)
.replace(R.id.container1, fragment)
.commit();
}
});
natural = (Button) myView.findViewById(R.id.natural);
natural.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
NaturalHazards fragment = new NaturalHazards();
FragmentManager fragmentManager = getActivity().getSupportFragmentManager();
fragmentManager.beginTransaction().addToBackStack("hi")
.setCustomAnimations(android.R.anim.fade_in, android.R.anim.fade_out)
.replace(R.id.container1, fragment)
.commit();
}
});
return myView;
}
public void onConfigurationChanged(Configuration newConfig) {
super.onConfigurationChanged(newConfig);
if(newConfig.orientation==Configuration.ORIENTATION_LANDSCAPE){
getActivity().setContentView(R.layout.firstlay);
}else{
getActivity().setContentView(R.layout.firstlay);
}
}
}
Does anyone know how to solve this? Any help is appreciated and thanks in advance.
you need to add setRetainInstance(true); //to your fragment onCreateView()
Also needn't be doing this getActivity().setContentView(R.layout.firstlay); in your onConfigurationChanged() method.
Hope this help :)
I think You to have re initilize when change orientation
try your modified code
private LayoutInflater inflater;
#Override
public View onCreateView(LayoutInflater inflater,
#Nullable ViewGroup container, #Nullable Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
myView = inflater.inflate(R.layout.firstlay, container, false);
reInitilize(myView);
return myView;
}
#Override
public void onConfigurationChanged(Configuration newConfig) {
// TODO Auto-generated method stub
super.onConfigurationChanged(newConfig);
if(newConfig.orientation==Configuration.ORIENTATION_LANDSCAPE){
myView = inflater.inflate(R.layout.firstlay, null);
reInitilize(myView);
}else{
myView = inflater.inflate(R.layout.firstlay, null);
reInitilize(myView);
}
}
private void reInitilize(View myView) {
// TODO Auto-generated method stub
biological = (Button) myView.findViewById(R.id.biological);
biological.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
BiologicalHazards fragment = new BiologicalHazards();
FragmentManager fragmentManager = getActivity().getSupportFragmentManager();
fragmentManager.beginTransaction().addToBackStack("hi")
.setCustomAnimations(android.R.anim.fade_in, android.R.anim.fade_out)
.replace(R.id.container1, fragment)
.commit();
}
});
natural = (Button) myView.findViewById(R.id.natural);
natural.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
NaturalHazards fragment = new NaturalHazards();
FragmentManager fragmentManager = getActivity().getSupportFragmentManager();
fragmentManager.beginTransaction().addToBackStack("hi")
.setCustomAnimations(android.R.anim.fade_in, android.R.anim.fade_out)
.replace(R.id.container1, fragment)
.commit();
}
});
}
You don't need to do handle orientation your self just to change your layout. Create 2 files with this same name R.layout.fistlay. One in res/layout, one in res/layout-land. Android will automatically pick the right one base on the orientation.
you could implement the method
#Override
protected void onSaveInstanceState(Bundle bundle){
// store some variable like boolean, ints, String to the bundle
bundle.putBoolean('currentFragment', isInFragmentA);
// call the default method
super.onSaveInstanceState(bundle);
}
After this, you could check if you are on a configuration change as following:
void onCreate(Bundle bundle){
if (bundle == null){
//start the activity as the use is opening the app as normal
} else {
// bundle is not null
//get back the variable you have store and act accordingly
// e.g do some FragmentTransition
}
}
Hope this help
how to Saving and Restoring Fragment state in Android ?
my code for save and restore state :
#Override
public void onSaveInstanceState(Bundle outState) {
super.onSaveInstanceState(outState);
outState.putInt("CurrentState",CurrentState);
}
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
// Inflate the layout for this fragment
if (savedInstanceState != null) {
// Restore last state for checked position.
CurrentState = savedInstanceState.getInt("CurrentState", 0);
}
.
.
.
switch (CurrentState){
case 1 :button_DisplayMemoris.performClick();break;
case 2 :
linearLayout_AddMemoris.setVisibility(View.VISIBLE);
linearLayout_Memoris.setVisibility(View.GONE);
linearLayout_DisplayMemoris.setVisibility(View.GONE);
break;
default:break;
}
return inflate;
}
when CurrentState=2 , linearLayout_AddMemoris Not displayed
How do I fix it?
update :
this is my activity :
public class ToolsActivity extends Activity {
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_tools);
displayView();
}
public void displayView() {
// update the main content by replacing fragments
Fragment fragment = = new MemoirsFragment();
FragmentManager fm = getFragmentManager();
FragmentTransaction ft = fm.beginTransaction();
ft.replace(R.id.frame_container, fragment);
ft.commit();
}
}
Is there a way to solve the problem?
I have no idea
Add in onCreate method null checking, now you are replace restored fragment by new fragment
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_tools);
if (savedInstanceState == null)
displayView();
}
From all the searches I have found on SO stating that you should save your instance state in the #Override public void onSaveInstanceState(Bundle outState)
However This is tightly coupled with the activities lifestyle.
How can I save the state of my listview in a fragment that gets swapped out with another fragment.
I have one main activity which all the fragments are loaded into.
I have tried this so far:
#Override
public void onSaveInstanceState(Bundle outState) {
super.onSaveInstanceState(outState);
//Save adapter data so that when the fragment is returned to it can be resused.
ArrayList<CategoryMobileDto> categories = new ArrayList<CategoryMobileDto>();
for(int i=0; i < adapter.getCount();i++)
{
categories.add(adapter.getItem(i));
}
String persistData = new Gson().toJson(categories);
outState.putString("Categories", persistData);
}
and then in my OnCreate();
if(savedInstanceState!=null)
{
String data =savedInstanceState.getString("Categories");
Type collectionType = new TypeToken<ArrayList<CategoryMobileDto>>() {
}.getType();
adapter.addAll(gson.<Collection<CategoryMobileDto>>fromJson(data, collectionType));
adapter.notifyDataSetChanged();
}else{
// Make request to server
}
however savedInstanceState is always null. But this makes sense as my activity is not being destroyed and recreated.
This is how I transition from one fragment to another:
fragment.setArguments(args);
FragmentManager fragmentManager = getFragmentManager();
FragmentTransaction fragmentTransaction = fragmentManager.beginTransaction();
fragmentTransaction.replace(R.id.container, fragment, "ProductListFragment");
fragmentTransaction.addToBackStack(null);
fragmentTransaction.commit();
Is there a way i can save the state of my listview when the fragment is removed and then restore it again when the fragment is popped from the back-stack?
Move this code from onCreate() to onActivityCreated() of Fragment
if(savedInstanceState!=null)
{
String data =savedInstanceState.getString("Categories");
Type collectionType = new TypeToken<ArrayList<CategoryMobileDto>>() {
}.getType();
adapter.addAll(gson.<Collection<CategoryMobileDto>>fromJson(data, collectionType));
adapter.notifyDataSetChanged();
}else{
// Make request to server
}
If you have any query please let me know.
You can use the Arguments with the Fragment(Only if you have the data to show in fragment before the fragment is loaded means attached). You can setArguments to a fragment which will be persisted when you go to another fragment by fragment transaction and when you come back, load the fragment from the getArguments function.
public void setArguments (Bundle args)
Added in API level 11
Supply the construction arguments for this fragment. This can only be called before the fragment has been attached to its activity; that is, you should call it immediately after constructing the fragment. The arguments supplied here will be retained across fragment destroy and creation.
public final Bundle getArguments ()
Added in API level 11
Return the arguments supplied when the fragment was instantiated, if any.
Please find the sample code below for passing data between fragments :
main.xml
<?xml version="1.0" encoding="utf-8"?>
<FrameLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:id="#+id/flContainer"
android:layout_width="match_parent"
android:layout_height="match_parent" >
</FrameLayout>
MainActivity.java
public class MainActivity extends Activity implements IFragContainer {
private static final String FRAG_TAG = "FragTag";
private FragBase mFrag;
private String dataToBePassedBack;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
changeFragment(FragA.class, "Data to Frag A");
}
#Override
public void changeFragment(Class<? extends FragBase> fragClass, String data) {
try {
FragmentTransaction ft = getFragmentManager().beginTransaction();
mFrag = fragClass.newInstance();
Bundle args = new Bundle();
args.putString("DATA", data);
mFrag.setArguments(args);
ft.replace(R.id.flContainer, mFrag, FRAG_TAG);
ft.addToBackStack(mFrag.toString());
ft.commit();
} catch (Exception e) {
e.printStackTrace();
}
}
#Override
public void onBackPressed() {
dataToBePassedBack = mFrag.getDataToPassBack();
FragmentManager mgr = getFragmentManager();
mgr.executePendingTransactions();
boolean doCheckAndExit = true;
for (int i = mgr.getBackStackEntryCount() - 1; i > 0; i--) {
BackStackEntry entry = mgr.getBackStackEntryAt(i);
if (!TextUtils.isEmpty(entry.getName())) {
mgr.popBackStackImmediate(entry.getId(),
FragmentManager.POP_BACK_STACK_INCLUSIVE);
doCheckAndExit = false;
break;
}
}
if (doCheckAndExit) {
finish();
} else {
mFrag = (FragBase) mgr.findFragmentByTag(FRAG_TAG);
}
}
#Override
public String getDataToBePassedBack() {
return dataToBePassedBack;
}
}
IFragContainer.java
public interface IFragContainer {
void changeFragment(Class<? extends FragBase> fragClass, String data);
String getDataToBePassedBack();
}
FragBase.java
public abstract class FragBase extends Fragment {
public String getDataToPassBack(){
return null;
}
}
FragA.java
public class FragA extends FragBase {
#Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
Button btn = new Button(getActivity());
final IFragContainer fragContainer = (IFragContainer) getActivity();
if (TextUtils.isEmpty(fragContainer.getDataToBePassedBack())) {
btn.setText(getArguments().getString("DATA"));
} else {
btn.setText(fragContainer.getDataToBePassedBack());
}
btn.setLayoutParams(new LayoutParams(LayoutParams.WRAP_CONTENT,
LayoutParams.WRAP_CONTENT));
btn.setOnClickListener(new OnClickListener() {
#Override
public void onClick(View v) {
fragContainer.changeFragment(FragB.class, "Data to Frag B");
}
});
return btn;
}
}
FragB.java
public class FragB extends FragBase {
#Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
Button btn = new Button(getActivity());
btn.setText(getArguments().getString("DATA"));
btn.setLayoutParams(new LayoutParams(LayoutParams.WRAP_CONTENT,
LayoutParams.WRAP_CONTENT));
btn.setOnClickListener(new OnClickListener() {
#Override
public void onClick(View v) {
getActivity().onBackPressed();
}
});
return btn;
}
#Override
public String getDataToPassBack() {
return "Data from Frag B to A";
}
}
Iam new to android .I need to go back to the FragmentActivity from fragment page.
My work flow is:
MainActivity->ProfileActivity->ProfilePhotoEditFragment
I need to go back to
ProfilePhotoEditFragment -> ProfileActivity
manifest
<uses-sdk
android:minSdkVersion="8"
android:targetSdkVersion="16" />
ProfilePhotoEditFragment.java
public class ProfilePhotoEditFragment extends Fragment implements OnClickListener {
ViewUtils mViewUtils;
Bundle mSavedInstanceState;
private OnNavigateProfileListener mOnNavigateProfileListener;
private Button mCancelButton;
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
Context mContext = getActivity().getApplicationContext();
mViewUtils = new ViewUtils(mContext);
}
#Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
mSavedInstanceState = savedInstanceState;
View view = inflater.inflate(R.layout.fragment_edit_profile_pic, container, false);
mCancelButton = (Button) view.findViewById(R.id.cancel);
mCancelButton.setOnClickListener(this);
return view;
}
#Override
public void onStart() {
super.onStart();
}
#Override
public void onClick(View view) {
if (view.getId() == mCancelButton.getId()){
onBackPressed();
}
}
public void onBackPressed() {
// do something on back.
return;
}
}
remove current fragment ProfilePhotoEditFragment in onBackPressed()
if (getSupportFragmentManager().getBackStackEntryCount() == 0) {
//( "stackzeo");
} else {
getSupportFragmentManager().popBackStack();
removeCurrentFragment();
//("stacknotzeo");
}
..
public void removeCurrentFragment() {
Fragment currentFrag = (Fragment) getFragmentManager()
.findFragmentById(R.id.content_frame);
if (currentFrag != null)
getFragmentManager().beginTransaction().remove(currentFrag);
getFragmentManager().beginTransaction().commit();
}
Call findFragmentById() on FragmentManager and determine which fragment is in your R.id.content_frame container.
Thank you All. this my working code
....
#Override
public void onClick(View view) {
if (view.getId() == mCancelButton.getId()){
getActivity().getSupportFragmentManager().popBackStack();
removeCurrentFragment();
}
}
public void removeCurrentFragment()
{
FragmentTransaction transaction = getActivity().getSupportFragmentManager().beginTransaction();
Fragment currentFrag = getActivity().getSupportFragmentManager().findFragmentById(R.id.fragment_common_profile_layout);
String fragName = "NONE";
if (currentFrag!=null)
fragName = currentFrag.getClass().getSimpleName();
if (currentFrag != null)
transaction.remove(currentFrag);
transaction.commit();
}
getActivity().onBackPressed();
You should be able to call this code from every fragment.
Please check, if getActivity() returns null.
Hope this helps.
just write down
public void onBackPressed(){
super.onBackPressed();
}