Develop Reference

how to intent from Fragmet to Fragment with his parent?

Fragment1 have a different parent with Fragment2, actually i want to intent in Fragment2 with his parent.
Fragment2 fragment = new Fragment2().getParentFragment();
fragment.setArguments(bundle);
FragmentManager fm = getFragmentManager();
FragmentTransaction ft = fm.beginTransaction();
ft.replace(R.id.containerView,fragment);
ft.commit();

you must pass data to secondActivity by intent and then use setData method to pass data to fragment. Note you must do this in the onCreateView function in the fragment. Like below code:
public void setData(Data data){
this.data = data;
}
#Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState){
View rootView = inflater.inflate(R.layout.fragment_layout,container,false);
// use data here
// also use view components(like buttons) here
return rootView;
}

Android relationships between fragments

I'm using some fragments programmatically in activity. There is one button in my first fragment and when i click to this button, it replaces to second fragment.My second fragment's background is 90% transparent, and when it starts, i can see button which is situated in first fragment, and it also works. I want to stop or do something, because i dont want to see first fragment features and use it.
First Fragment
public class RegistrationFirstFragment extends Fragment {
RegistrationSecondFragment rf;
ImageButton btnNewUser,btnNewAgent;
#Nullable
#Override
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
//return super.onCreateView(inflater, container, savedInstanceState);
View v =inflater.inflate(R.layout.fragment_registration_first,container,false);
rf = new RegistrationSecondFragment();
btnNewUser = (ImageButton)v.findViewById(R.id.btnNewUserRegistrationFirstFragment);
btnNewAgent = (ImageButton)v.findViewById(R.id.btnNewAgentRegistrationFirstFragment);
btnNewUser.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
Toast.makeText(getActivity(), "Transaction completed succesfully", Toast.LENGTH_LONG).show();
FragmentManager fm = getFragmentManager();
FragmentTransaction ft = fm.beginTransaction();
ft.replace(R.id.flRegistrationFirst, rf);
ft.commit();
}
});
return v;
}
}
Second Fragment
public class RegistrationSecondFragment extends Fragment {
RegistrationFirstFragment rtl;
#Nullable
#Override
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
rtl = new RegistrationFirstFragment();
//return super.onCreateView(inflater, container, savedInstanceState);
View v =inflater.inflate(R.layout.fragment_registration_second,container,false);
FragmentManager fm = getFragmentManager();
FragmentTransaction ft = fm.beginTransaction();
// ft.replace(R.id.flRegistrationFirst, rf);
ft.remove(rtl);
ft.commit();
return v;
}
}
Main Activity
public class RegistrationActivity extends AppCompatActivity{
RegistrationFirstFragment fr;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_registration);
fr = new RegistrationFirstFragment();
FragmentManager fm = getSupportFragmentManager();
FragmentTransaction ft = fm.beginTransaction();
ft.add(R.id.flRegistrationFragment,fr);
ft.commit();
}
}

You can put
FragmentManager fragmentManager = getFragmentManager();
fragmentManager.beginTransaction().replace(R.id.content_frame, fragment).commit();
(the parameter fragment would be an instance of your second fragment)
into your onClick(View view){...} method to change the fragment instead of adding it.
Next time code for understanding your problem btw ;)

Add to fragment layout android:clickable="true". Int his way fragment will catch event so the click will not be caught by "main fragment".
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:clickable="true" />

Give android:clickable="true" for Second Fragment root layout parent, when ever fragment opens It catches the click event of root and ignored previous click events.
Second One: If u use replace Fragment it's better than add fragment.
getActivity().getSupportFragmentManager().beginTransaction().replace
(R.id.YOUR_CONTAINER, 'FragmentObject').addToBackStack("TAG").commitAllowingStateLoss();

Fragment is recreate on back press from other Fragment

I am facing a problem in regarding fragment.
In my scenario,
There are two fragment associated with FragmentActivity.
In FragmentActivity, there are a container layout (Frame Layout) in which all fragment will replace.
public void replaceFragment(Fragment fragmentClass) {
String selectedFragment = fragmentClass.getClass().getName();
FragmentManager fragmentManager = getSupportFragmentManager();
FragmentTransaction fragmentTransaction = fragmentManager
.beginTransaction();
fragmentTransaction
.replace(R.id.content_frame, fragmentClass);
fragmentTransaction.addToBackStack(null);
fragmentTransaction.commit();
}
First time , I set a List type fragment (Fragment A) in which get the data from web service and papulate over listview. I execute the AsyncTask from onCreateView() method.
In MainActivity: onCreate
SherlockFragment fragment = new FragmentA();
replaceFragment(fragment);
On list item click of Fragment A, Fragment A will callback the activity method to replace it to details type fragment Fragment B.
#Override
public void onAttach(Activity activity) {
// TODO Auto-generated method stub
super.onAttach(activity);
callback = (ICallBack) activity;
}
#Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
/*View rootView = inflater.inflate(R.layout.fragment_locate, container,
false);*/
View rootView = inflater.inflate(R.layout.fragment_a, container,
false);
ListView list = (ListView) rootView
.findViewById(R.id.listView);
adapter = new MyListAdapter();
list.setAdapter(adapter);
list
.setOnItemClickListener(new AdapterView.OnItemClickListener() {
#Override
public void onItemClick(AdapterView<?> parent,
View convertView, int position, long id) {
SherlockFragment fragment = new SalonDetailFragment();
callback.replaceFragment(fragment);
}
});
ListDataTask task = new ListDataTask();
task.execute();
return rootView;
}
class ListDataTask extends AsynTask<Void,Void,List<Data>>{
public Void doInBackground(Void parems){
List<Data> = getDataFromServer();
}
onPostExecute(List<Data> data){
adapter.addAllData(data);
adapter.notifyDataSetChanged();
}
}
When I press back button, from Fragment B then Application will show Fragment A but it execute Asynctask again and get the data to papulate the listview.
So I need to know, How to maintain the pervious state of Fragment like Activity.
Is there are any way to not to create Fragment after come back from Other activity
Have a look my pseudo code.

I got solution. Simple.... do the check null value of rootview
public class FragmentA extends Fragment {
View _rootView;
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
if (_rootView == null) {
// Inflate the layout for this fragment
_rootView = inflater.inflate(R.layout.fragment_a, container, false);
// Find and setup subviews
_listView = (ListView)_rootView.findViewById(R.id.listView);
...
} else {
// Do not inflate the layout again.
// The returned View of onCreateView will be added into the fragment.
// However it is not allowed to be added twice even if the parent is same.
// So we must remove _rootView from the existing parent view group
// (it will be added back).
((ViewGroup)_rootView.getParent()).removeView(_rootView);
}
return _rootView

I have the same problem and solved by replacing
fragmentTransaction
.replace(R.id.content_frame, fragmentClass);
to
fragmentTransaction
.add(R.id.content_frame, fragmentClass);
Replace will always create new instance on back press while Add is just add a new fragment in Stack. for more information check this link

How to Do Transaction of framents from one to another

I want to transact from one fragment to another... below given is my snippet...
I want transaction on button click...
public class Main extends Fragment {
// final View rootView;
#Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
View rootView = inflater.inflate(R.layout.main, container, false);
Button camera=(Button)rootView.findViewById(R.id.button1);
camera.setOnClickListener(new OnClickListener() {
#Override
public void onClick(View v) {
FragmentTransaction ft = getFragmentManager().beginTransaction();
ft.replace(R.layout.main, new CameraActivity());
ft.commit();
}
});
return rootView;
}
so please Assist me in solving this...
[1]<--->[2]<--->[3]<--->[4]<--->[5]
where []=fragments...
[1]- has buttons a,b,c,d,e
How to move from 1 to 3 OnClick of c ...
Here is the Camera Activity
public class CameraActivity extends Fragment {
#Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
View rootView = inflater.inflate(R.layout.camera, container, false);
return rootView;
}
}

first of all this cant be activity
ft.replace(R.layout.main, new CameraActivity());
it has to be fragment
put something like this in your onclick listener in FirstFragment:
Bundle bundle = new Bundle();
bundle.putString("key", value); //if you want to pass parameter to second fragment
SecondFragment fragment = new SecondFragment();
fragment.setArguments(bundle);
FragmentTransaction ft = getFragmentManager().beginTransaction();
ft.replace(R.id.content_frame, fragment).addToBackStack(null);
ft.commit();
than in your SecondFragment onclick listener:
Bundle bundle = new Bundle();
bundle.putString("key", value); //if you want to pass parameter to second fragment
ThirdFragment fragment = new ThirdFragment();
fragment.setArguments(bundle);
FragmentTransaction ft = getFragmentManager().beginTransaction();
ft.replace(R.id.content_frame, fragment).addToBackStack(null);
ft.commit();
and so on ...
method addToBackStack(null) is providing you back as simple as that. You could also pass some tag in that method if you need it, but I think from question you want be needing it.
Also if you need to start Activity than dont use this method, use Intent instead.
hope it helps

Replacing a fragment with another fragment of the same class

I have a fragment (let's call it MyFragment) that inflates different layouts according to a parameter passed in the arguments.
All works well if MyFragment is started from a different fragment. But if MyFragment is active and I want to launch a new MyFragment with a different layout parameter, the fragmentManager does not create a new fragment at all.
data.setInt("Layout index",i);
fragmentTab0 = (Fragment) new MyFragment();
fragmentTab0.setArguments(data);
fragmentTransaction.replace(R.id.fragmentContent, fragmentTab0, "MY");
fragmentTransaction.addToBackStack(null);
fragmentTransaction.commit();
How can I force convince the fragmentTransaction to launch the fragment again?
NOTE: The important point here is I need to inflate again a layout, which is different from the layout inflated before. The code looks like:
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
switch( getArguments().getInt("Layout index") ) {
case 1:
rootView = inflater.inflate(R.layout.firstlayout, container, false);
break;
case 2:
rootView = inflater.inflate(R.layout.secondlayout, container, false);
break;
case 3:
rootView = inflater.inflate(R.layout.thirdlayout, container, false);
break;
default: break;
}

Bypass Solution
Explanation (hoover to see it)
Since the source code for fragmentTransaction.replace/add/remove is
not available I could not find what really happens. But it is
reasonable to think that at some point it compares the current class
name with the replacement class name and it exits if they are the
same.. Thanks to #devconsole for pointing out the source
code. I know now why this happens. The FragmentManager.removeFragment()
method does not reset the fragment state, it remains RESUMED, then the
method moveToState(CREATED) only initilizes a fragment if (f.mState <
newState) = if (RESUMED < CREATED) = false. Else, ergo, it just resumes the fragment.
So to solve this problem I created an almost empty fragment which only purpose is to replace itself with the target fragment.
public class JumpFragment {
public JumpFragment() {
}
#Override
public void onStart() {
Bundle data = getArguments();
int containerId = data.getString("containerID");
String tag = data.getString("tag");
//Class<?> c = data.get???("class");
//Fragment f = (Fragment) c.newInstance();
Fragment f = (Fragment) new MyFragment();
FragmentManager fragmentManager = getFragmentManager();
FragmentTransaction fragmentTransaction = fragmentManager.beginTransaction();
f.setArguments(data);
fragmentTransaction.replace(containerId, f, tag);
fragmentTransaction.addToBackStack(null);
fragmentTransaction.commit();
}
}
And I use it:
data.setInt("Layout index",i);
data.setInt("containerID",R.id.fragmentContent);
data.setString("tag","MY");
fragmentTab0 = (Fragment) new JumpFragment();
fragmentTab0.setArguments(data);
fragmentTransaction.replace(R.id.fragmentContent, fragmentTab0);
fragmentTransaction.commit();
Now no fragment is replaced by a same class fragment:
MyFragment -> JumpFragment -> MyFragment
I haven't figured out how to pass the class through the arguments bundle, to make it totally generic.

The following worked without problems for me. Notice that I used the Android Support Library.
activity_main.xml:
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:context=".MainActivity" >
<Button
android:id="#+id/button_one"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="ONE" />
<Button
android:id="#+id/button_two"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_toRightOf="#id/button_one"
android:text="TWO" />
<FrameLayout
android:id="#+id/main_container"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_below="#id/button_one" >
</FrameLayout>
</RelativeLayout>
MainActivity.java:
public class MainActivity extends FragmentActivity {
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
if (savedInstanceState == null) {
FragmentManager fragmentManager = getSupportFragmentManager();
FragmentTransaction transaction = fragmentManager.beginTransaction();
Fragment fragment = DetailsFragment.newInstance("INITIAL");
transaction.add(R.id.main_container, fragment);
transaction.commit();
}
findViewById(R.id.button_one).setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
update("Button 1 clicked");
}
});
findViewById(R.id.button_two).setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
update("Button 2 clicked");
}
});
}
protected void update(String value) {
FragmentManager fragmentManager = getSupportFragmentManager();
FragmentTransaction transaction = fragmentManager.beginTransaction();
Fragment fragment = DetailsFragment.newInstance(value);
transaction.replace(R.id.main_container, fragment);
transaction.commit();
}
public static final class DetailsFragment extends Fragment {
public static DetailsFragment newInstance(String param) {
DetailsFragment fragment = new DetailsFragment();
Bundle args = new Bundle();
args.putString("param", param);
fragment.setArguments(args);
return fragment;
}
#Override
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
TextView textView = new TextView(container.getContext());
textView.setText(getArguments().getString("param"));
return textView;
}
}
}

Did you try to first remove your fragment with remove(fragMgr.findFragmentByTag("MY"))and then add the new one ?
PS : I assume you don't keep any reference to this fragment.

If I understand you correctly: the fragment you want to replace what is currently being displayed and the user does something to cause it to re-display itself?
If this is correct then have done something similar this way:
public class MyFragment extends Fragment {
#Override
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
// Inflate the layout for this fragment
final View V = inflater.inflate(R.layout.myLayout, container, false);
// Call method that fills the layout with data
displayData(V);
// Put a listener here that checks for user input
Button redisplayButton = (Button) V.findViewById(R.id.my_button);
// if the button is clicked....
redisplayButton.setOnClickListener(new OnClickListener() {
public void onClick(View v){
//
// do some stuff
//
// ....then eventually...
displayData(V);
}
});
return V;
}
Later on you can have the displayData() method that defines what the fragment displays....
public void displayData(View V){
// Do something
return;
}
Hope this helps!