I tried making a navigation between fragments. I've got the NewFragment.java with the new fragment working. My problem is:
How do I make this onClickListener run NewFragment.java correctly?
button.setOnClickListener(new OnClickListener() { @Override public void onClick(View v) { Intent i = new Intent(getActivity(), NewFragment.class); startActivity(i); }
});FYI: This is from inside a fragment (I don't know if that matters).
114 Answers
Add following code in your click listener function,
NextFragment nextFrag= new NextFragment();
getActivity().getSupportFragmentManager().beginTransaction() .replace(R.id.Layout_container, nextFrag, "findThisFragment") .addToBackStack(null) .commit();The string "findThisFragment" can be used to find the fragment later, if you need.
This is more described code of @Narendra's code,
First you need an instance of the 2nd fragment. Then you should have objects of FragmentManager and FragmentTransaction. The complete code is as below,
Fragment2 fragment2=new Fragment2();
FragmentManager fragmentManager=getActivity().getFragmentManager();
FragmentTransaction fragmentTransaction=fragmentManager.beginTransaction();
fragmentTransaction.replace(R.id.content_main,fragment2,"tag");
fragmentTransaction.addToBackStack(null);
fragmentTransaction.commit();Hope this will work. In case you use androidx, you need getSupportFragmentManager() instead of getFragmentManager().
2You should create a function inside activity to open new fragment and pass the activity reference to the fragment and on some event inside fragment call this function.
1Use this,
AppCompatActivity activity = (AppCompatActivity) view.getContext();
Fragment myFragment = new MyFragment();
activity.getSupportFragmentManager().beginTransaction().replace(R.id.fragment_container, myFragment).addToBackStack(null).commit();@Override
public void onListItemClick(ListView l, View v, int pos, long id) { super.onListItemClick(l, v, pos, id); UserResult nextFrag= new UserResult(); this.getFragmentManager().beginTransaction() .replace(R.id.content_frame, nextFrag, null) .addToBackStack(null) .commit();
}Using Kotlin to replace a Fragment with another to the container , you can do
button.setOnClickListener { activity!! .supportFragmentManager .beginTransaction() .replace(R.id.container, NewFragment.newInstance()) .commitNow()
}a simple option is to navigate to the second fragment by defining an action in the nav_graph.xml and then use it like this (example for Kotlin):
rootViewOfFirstFragment.someBtn.setOnClickListener{ Navigation.findNavController(rootViewOfFirstFragment) .navigate(R.id.action_firstFragment_to_secondFragment) } Fragment fr = new Fragment_class(); FragmentManager fm = getFragmentManager(); FragmentTransaction fragmentTransaction = fm.beginTransaction(); fragmentTransaction.add(R.id.viewpagerId, fr); fragmentTransaction.commit();Just to be precise, R.id.viewpagerId is cretaed in your current class layout, upon calling, the new fragment automatically gets infiltrated.
Adding to @Narendra solution...
IMPORTANT: When working with fragments, navigations is closely related to host acivity so, you can't justo jump from fragment to fragment without implement that fragment class in host Activity.
Sample:
public class MyHostActivity extends AppCompatActivity implements MyFragmentOne.OnFragmentInteractionListener {
Also, check your host activity has the next override function:
@Override
public void onFragmentInteraction(Uri uri) {}Hope this helps...
Well my problem was that i used the code from the answer, which is checked as a solution here, but after the replacement was executed, the first layer was still visible and functionating under just opened fragment. My solution was simmple, i added
.remove(CourseListFragment.this)the CourseListFragment is a class file for the fragment i tried to close. (MainActivity.java, but for specific section (navigation drawer fragment), if it makes more sense to you) so my code looks like this now :
LecturesFragment nextFrag= new LecturesFragment(); getActivity().getSupportFragmentManager().beginTransaction() .remove(CourseListFragment.this) .replace(((ViewGroup)getView().getParent()).getId(), nextFrag, "findThisFragment") .addToBackStack(null) .commit();And it works like a charm for me.
first of all, give set an ID for your Fragment layout e.g:
<androidx.constraintlayout.widget.ConstraintLayout xmlns:android=""
xmlns:app=""
xmlns:tools=""
android:layout_width="match_parent"
android:layout_height="match_parent"
**android:id="@+id/cameraFragment"**
tools:context=".CameraFragment">and use that ID to replace the view with another fragment.java file. e.g
ivGallary.setOnClickListener(new View.OnClickListener() { @Override public void onClick(View v) { UploadDoc uploadDoc= new UploadDoc(); (getActivity()).getSupportFragmentManager().beginTransaction() .replace(**R.id.cameraFragment**, uploadDoc, "findThisFragment") .addToBackStack(null) .commit(); } });For Kotlin simply you can use this,
First: Create new instance of the fragment
val newFragment = NewFragment.newInstance()Second: Start the fragment transaction
val fragmentTransaction: FragmentTransaction = activity!!.supportFragmentManager.beginTransaction()Third: Replace current fragment with new fragment ( tips: avoid using id of the container view like R.id.fl_fragment, you may face view not find error, just use is at mentioned below)
fragmentTransaction.replace( (view!!.parent as ViewGroup).id,newFragment
)Final Steps:
fragmentTransaction.addToBackStack(null)
fragmentTransaction.commit()use this in adapter/fragment all previous methouds are expired now
((AppCompatActivity) context).getSupportFragmentManager().beginTransaction().replace(R.id.container,new cartFragment()).commit();My how things do change in 8 years time. If you are using NavigationController in your app this is very simple. In your mobile_navigation.xml file you need to create "from" and "to" fragments. In the "from" fragment add the destination id of the "to" fragment.
<?xml version="1.0" encoding="utf-8"?>
<navigation xmlns:android="" xmlns:app="" xmlns:tools="" android:id="@+id/mobile_navigation" app:startDestination="@+id/nav_home"> <fragment android:id="@+id/nav_home" android:name="com.yourpackage.FromFragment" android:label="@string/menu_home" tools:layout="@layout/from_fragment" > <action android:id="@+id/action_go" app:destination="@id/dest_fragment" app:enterAnim="@anim/nav_default_enter_anim" app:exitAnim="@anim/nav_default_exit_anim" app:popEnterAnim="@anim/nav_default_pop_enter_anim" app:popExitAnim="@anim/nav_default_pop_exit_anim"/> </fragment> <fragment android:id="@+id/dest_fragment" android:name="com.yourpackage.ToFragment" android:label="To Fragment" tools:layout="@layout/to_fragment" />
</navigation>Then in your onClick handler call:
Navigation.findNavController(view).navigate(R.id.action_go);This page provides more details including how to set up the destination programmatically.
