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;
}
Related
I have one activity and two Fragments. FragmentA and FragmentB.
I need to implement like, Initially FragmentA should be there.
and After Button click FragmentB should be there.
in my condition when activity is being displayed,fragmentA is showing and when click to button,fragmentB placed at the bottom of fragmentA and do not replace FragmentA
My activity Code is:
public class FragmentActivity extends AppCompatActivity {
FrameLayout activityFragment;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_fragment);
activityFragment = (FrameLayout) findViewById(R.id.activityFragment);
Fragment fragment = new FragmentA();
FragmentTransaction transaction = getSupportFragmentManager().beginTransaction();
transaction.add(R.id.activityFragment, fragment);
transaction.commit();
}
public void goToFrag(View view) {
FragmentTransaction transaction = getSupportFragmentManager().beginTransaction();
Fragment fragment = new FragmentB();
transaction.add(R.id.fragmentRoot, fragment);
transaction.commit();
}
}
my first fragment code:
public class FragmentA extends Fragment {
#Nullable
#Override
public View onCreateView(LayoutInflater inflater, #Nullable ViewGroup container, #Nullable Bundle savedInstanceState) {
super.onCreateView(inflater, container, savedInstanceState);
View view=inflater.inflate(R.layout.fragment_a,container,false);
return view;
}
}
my second fragment code:
public class FragmentB extends Fragment {
public FragmentB() {
}
#Nullable
#Override
public View onCreateView(LayoutInflater inflater, #Nullable ViewGroup container, #Nullable Bundle savedInstanceState) {
super.onCreateView(inflater, container, savedInstanceState);
View view=inflater.inflate(R.layout.fragment_b,container,false);
return view;
}
}
First of all, you should always have a FrameLayout in xml to replace your fragments there, then you use different containers to add fragments activityFragment and fragmentRoot .You should replace fragments in one container. You can use either add or replace for FragmentManager , so it activityFragment is your container (which should be a framelayout as a wrapper as the docs suggest) you use
public void goToFrag(View view) {
FragmentTransaction transaction = getSupportFragmentManager().beginTransaction();
Fragment fragment = new FragmentB();
transaction.replace(R.id.activityFragment, fragment); // use the same container where you switch A and B
transaction.commit();
}
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();
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
My Fragment
public class CustomFrag extends Fragment {
private Button btn;
#Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
// Inflate the layout for this fragment
View view = inflater.inflate(R.layout.button_fragment, container, false);
btn = (Button)view.findViewById(R.id.button1);
return view;
}
public void sendItem(String item) {
btn.setText(item);
}
}
And in my activity
public void loadFragment(String data) {
// Load up new fragment
Fragment fragment = new CustomFrag();
FragmentManager fm = getSupportFragmentManager();
FragmentTransaction transaction = fm.beginTransaction();
transaction.add(R.id.contentFragment, fragment, "custFrag");
transaction.addToBackStack("custFrag");
transaction.commit();
// Required before calling fragment methods
getSupportFragmentManager().executePendingTransactions();
// Load fragment with data
CustomFrag frag = (CustomFrag) getSupportFragmentManager().findFragmentByTag("custFrag");
frag.sendItem(data);
}
I'm getting a nullpointer exception any time I attempt to use the views of my fragment. If I try to load the view inside the method as well, it will not work
i.e. inside sendItem()
btn = (Button)getView().findViewById(R.id.button1);
My layout (button_fragment) contains the button:
<Button
android:id="#+id/button1"
android:layout_width="match_parent"
android:layout_height="wrap_content" />
Because you have executed the transaction does not mean that the fragment has actually created its view. Which is why btn is still null.
To pass data from the activity to the fragment, use the argument bundle:
Fragment fragment = new CustomFrag();
Bundle args = new Bundle();
args.putString("item", data);
fragment.setArguments(args);
Then, in onCreateView:
btn = (Button)view.findViewById(R.id.button1);
btn.setText(getArguments().getString("item"));
See this Best practice for instantiating a new Android Fragment question and the first answer.
The problem here is that the fragment's layout is not drawn yet when sendItem(...) is called. Which means btn is null at that point. Instead, this is how you're supposed to do it (see http://developer.android.com/guide/components/fragments.html):
public class CustomFrag extends Fragment {
private Button btn;
#Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
// Inflate the layout for this fragment
View view = inflater.inflate(R.layout.button_fragment, container, false);
btn = (Button)view.findViewById(R.id.button1);
btn.setText(getArguments.getString("item"));
return view;
}
}
And
public void loadFragment(String data) {
// Load up new fragment
Fragment fragment = new CustomFrag();
Bundle args = new Bundle();
args.putString("item", data);
fragment.setArguments(args);
FragmentManager fm = getSupportFragmentManager();
FragmentTransaction transaction = fm.beginTransaction();
transaction.add(R.id.contentFragment, fragment, "custFrag");
transaction.addToBackStack("custFrag");
transaction.commit();
// Required before calling fragment methods
getSupportFragmentManager().executePendingTransactions();
}
Edit:
njzk2 was faster, but I hope the details I gave will help you further. In any case, the link he gave explains nicely why you should do it like that.
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