Develop Reference

How to start Fragment from onClick

I am using recyclerview in my app. I want to start a fragment when click on image view. But i don't know how to. Also i want to put data when starting fragment. I know how to start the activity with below code. But how can i start fragment same way?
Edited Code
FragmentManager fm = getSupportFragmentManager();
FragmentTransaction ft = fm.beginTransaction();
ft.replace(R.id.layoutContent, frag);
ft.commit();

Fragments cannot be started, they must be added to a container.
Fragments aren't meant to function on their own, they need an enclosing Activity.
Having the following layout:
[...]
<FrameLayout android:id="#+id/container"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="?android:attr/detailsElementBackground" />
[...]
You place the fragment in it like such:
FragmentTransaction transaction = getSupportFragmentManager().beginTransaction();
transaction.replace(R.id.container, newFragment);
transaction.commit();
You pass arguments to the fragment by using Bundle and creating the fragment as follows:
TestFragment newFragment = new TestFragment();
Bundle args = new Bundle();
args.putString("Hello world!");
newFragment.setArguments(args);
This has to be done before the transaction.
For further info refer to the official documentation
Note on edited code: you have to call the transaction from inside the Activity the FrameLayout is part of. Alternatively use a rather dirty workaround:
In Main:
public class Main extends Activity{
public static Main currentInstance;
public void onCreate(Bundle boomerang){
currentInstance = this;
}
}
In the Playlist activity then use Main.currentInstance.getSupportFragmentManager() etc.
But I wouldn't recommend it.

In order to start a fragment you need to make use of the fragment manager.
YourFragment yourFragmentInstance = YourFragment.newInstance("Hello", 12);
FragmentTransaction fragmentTransaction = getFragmentManager().beginTransaction();
//Fragment is hosted by an activity, and the activity must have a layout
//or a container for the fragment to be nested in, in this case it will be
//a FrameLayout with an id fragment_container
fragmentTransaction.replace(R.id.fragment_container, yourFragmentInstance);
fragmentTransaction.commit();
And you can pass in arguments to your fragment like this:
public class YourFragment extends Fragment {
public static YourFragment newInstance(String paramOne, int paramTwo) {
YourFragment fragment = new YourFragment();
Bundle b = new Bundle();
//set params/arguments for fragment
b.putString("param_one", paramOne);
b.putInt("param_two", paramTwo);
fragment.setArguments(b);
return fragment;
}
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
//Get the params you passed in
Bundle bundle = getArguments();
String paramOne = bundle.getString("param_one");
String paramTwo = bundle.getInt("param_two");
}
}
Note: I've not tested this code.. This is just an idea :)

Adding fragment destroys activity

I have an Activity with a container being a FrameLayout. I need to add a fragment to that container, but doing so throws an IllegalStateException, destroying my Activity.
This is my container in the activity layout:
<FrameLayout
android:id="#+id/seeMoreContainer"
android:layout_width="match_parent"
android:layout_height="match_parent">
</FrameLayout>
This is how I add the fragment to the activity
PlacesSeeMoreFragment placesSeeMoreFragment = new PlacesSeeMoreFragment();
Bundle bundle = new Bundle();
bundle.putInt(PlacesSeeMoreFragment.KEY, poiID);
placesSeeMoreFragment.setArguments(bundle);
getSupportFragmentManager().beginTransaction().add(R.id.seeMoreContainer,
placesSeeMoreFragment).commit();
And this is the logcat
java.lang.IllegalStateException: Activity has been destroyed
at android.support.v4.app.FragmentManagerImpl.enqueueAction(FragmentManager.java:1515)
at android.support.v4.app.BackStackRecord.commitInternal(BackStackRecord.java:634)
at android.support.v4.app.BackStackRecord.commit(BackStackRecord.java:613)
at net.ilb.Activities.PlacesActivity.openPlaceSeeMore(PlacesActivity.java:140)
What am I doing wrong here?
EDIT:
I add the fragment to the activity from a public method, which I call from onItemClickListener of a ListView
This is the whole method
public void openPlaceSeeMore(int poiID){
PlacesSeeMoreFragment placesSeeMoreFragment = new PlacesSeeMoreFragment();
Bundle bundle = new Bundle();
bundle.putInt(PlacesSeeMoreFragment.KEY, poiID);
placesSeeMoreFragment.setArguments(bundle);
getSupportFragmentManager().beginTransaction().add(R.id.seeMoreContainer, placesSeeMoreFragment).commit();
}
And this is how the method is called
mListView.setOnItemClickListener(new AdapterView.OnItemClickListener() {
#Override
public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
PlacesActivity placesActivity = new PlacesActivity();
placesActivity.openPlaceSeeMore(poi.getId());
}
});

I guess you are calling this:
PlacesActivity placesActivity = new PlacesActivity();
This is a very wrong approach to call a method declared in activity.
Which is creating new instance of your activity every time you click something on the list. Plus if you want to capture list clicks you should use an interface and not use activity objects anywhere.
Hope this helps.

Use below code....
Fragment fragment = new PlacesSeeMoreFragment();
FragmentManager fm = getActivity().getSupportFragmentManager();
FragmentTransaction ft = fm.beginTransaction();
ft.replace(R.id.content_frame, fragment);
ft.commit();
Bundle bundle = new Bundle();
bundle.putInt(PlacesSeeMoreFragment.KEY, poiID);
fragment.setArguments(bundle);

Sometime I faced the same issue and this is what I did. Use commitAllowingStateLoss() instead of commit(). Try this one
getSupportFragmentManager().beginTransaction().add(R.id.seeMoreContainer, placesSeeMoreFragment).commitAllowingStateLoss();

try this ,
PlacesSeeMoreFragment placesSeeMoreFragment = new PlacesSeeMoreFragment();
Bundle bundle = new Bundle();
bundle.putInt(PlacesSeeMoreFragment.KEY, poiID);
placesSeeMoreFragment.setArguments(bundle);
FragmentManager manager = getSupportFragmentManager();
FragmentTransaction transaction=manager.beginTransaction();
transaction.add(R.id.seeMoreContainer, placesSeeMoreFragment );
transaction.commit();

Redirect the fragment when click on button

I am using this code for replacing the fragment but there is a problem, it's not replacing the old fragment it just override on old fragment so please tell me what is the problem here.
public void selectFrag1(View rootView) {
Fragment frag;
if (rootView == findViewById(R.id.startup1)) {
frag = new S_SignupFragment();
} else {
frag = new F_SignupFragment();
}
FragmentManager fragManager = getSupportFragmentManager();
FragmentTransaction fragTransaction = fragManager.beginTransaction();
fragTransaction.replace(R.id.fragment_signup,frag);
fragTransaction.commit();
}

Are you sure that you pass the parent view, that is going to hold your fragment on the line fragTransaction.replace(R.id.fragment_signup,frag); ?
For fragmentTransaction.replace(...,...) you need to specify a container for your fragment and the fragment itself. Check where does your R.id.fragment_signup directs. More information you could find in this SO question: Unable to replace fragment on button click

fr = new FragmentOne();
fm = getSupportFragmentManager();
fragmentTransaction = fm.beginTransaction();
fragmentTransaction.add(R.id.fragment_place,fr);
fragmentTransaction.commit();
if you use same code then add this before call first button setonclicklistner

Start a fragment from an activity

I m trying to start a fragment from an activity like this
public void btn (View view)
{
Intent intent1 = new Intent(this, F5_fr.class);
startActivity(intent1);
}
i have an Onclick thing in my xml with the "btn" :
Fragment 's name is F5_fr.class
Thanks in advance

Use this Snippet. Please refer what is fragment here
FragmentTransaction transaction = getSupportFragmentManager()
.beginTransaction().replace(R.id.content, YOUR_FRAGMEMENT,
FRAGMENT_TAG(OPTIONAL);
transaction.addToBackStack(null);
transaction.commit();

Please check below code snippet :
FragmentManager fragmentManager = getFragmentManager();
FragmentTransaction fragmentTransaction =
fragmentManager.beginTransaction();
YourFragment fragment = new YourFragment();
fragmentTransaction.replace(android.R.id.content, fragment);
Referance link - this.
here you will get idea of fragments . you can see here how to call a fragments from an activity.

how to move from one fragment to another fragment on button click

I am using the SherlockFragments library for the sliding menu.I have list of items as menu when
I click on item fragment get opened as an activity but it is a fragment.Now I am new to fragments.i don't know how to move from one fragment to another fragment.As in activity, we have intent to move to another activity.but in fragment I don't how to move to another fragment.I have a button in fragmentA.when I click on this button it moves to fragment B.
By googling I came to know that it has different cycles but anyhow I get toast msg when I click button
here is following code
public class Fragment2 extends Fragment {
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
View view = inflater.inflate(R.layout.actionnetworklogin, container, false);
Button login = (Button)view.findViewById(R.id.login);
login.setOnClickListener(new OnClickListener() {
#Override
public void onClick(View v) {
// TODO Auto-generated method stub
Toast.makeText(v.getContext().getApplicationContext(),"login clicked", 5000).show();
}
});
return view;
}
}
Can someone please tell me how can I move one fragment to another fragment?
Is there any other method that I can use activities instead of fragments?
I have written code for all activities and java files but I don't know that sliding menu has fragmented and now I have to write all the code fragments.

It's simple Only three line code...
Fragment fragment = new SalesFragment();
FragmentManager fragmentManager = getFragmentManager();
fragmentManager.beginTransaction().replace(R.id.frame_container, fragment).commit();

This is the code I use to switch fragments inside a view:
FragmentTransaction fragmentTransaction = getSupportFragmentManager().beginTransaction();
fragmentTransaction.replace([viewId], fragment, tag);
fragmentTransaction.addToBackStack(tag);
fragmentTransaction.setTransition(FragmentTransaction.TRANSIT_FRAGMENT_OPEN);
fragmentTransaction.commit();

You can try this also:-
public void ButtonClick(View view) {
Fragment mFragment = new YourNextFragment();
getSupportFragmentManager().beginTransaction()
.replace(R.id.content_frame, mFragment ).commit();
}

FragmentManager fragmentManager = getFragmentManager();
fragmentManager
.beginTransaction()
.replace(R.id.frame_container,
new TeacherFragment()).commit();

FragmentTransaction fragmenttransaction = getSupportFragmentManager().beginTransaction();
FirstFragment regcomplainfragment = new FirstFragment();
fragmenttransaction.replace(R.id.content_frame, regcomplainfragment).addToBackStack("tag");
fragmenttransaction.commit();

//Below is the example
//In first Fragment
Fragment fragment = new YourFragmentClassName();
FragmentManager fragmentManager = getActivity().getSupportFragmentManager(); android.support.v4.app.FragmentTransaction ft= fragmentManager.beginTransaction();
ft.replace(R.id.flContent, fragment);
Bundle args = new Bundle();
// Pass the values what you want to send to next fragment
args.putInt("Year", rYear);
args.putString("Month", rMonth);
args.putInt("Industry", rIndustry);
fragment.setArguments(args);
ft.commit();
//In Second Fragment
//In onCreateView Method get the values
int strYear= getArguments().getInt("Year");
String strMonth = getArguments().getString("Month");
strIndustry= getArguments().getInt("Industry");
//That's it very simple