How to open a Fragment on button click from a fragment in Android

Question

I have some button on my HomeFragment i want to to open a Fragment on button click from a fragment . Something like Navigation. I am trying with bellow code but did not worked. Please help ! I am very new to android and trying to learn new things.

Here is My code

import android.app.Fragment; import android.content.Intent; import android.os.Bundle; import android.view.LayoutInflater; import android.view.View; import android.view.ViewGroup; import android.widget.Button;  public class HomeFragment extends Fragment {      public HomeFragment(){}        @Override     public View onCreateView(LayoutInflater inflater, ViewGroup container,             Bundle savedInstanceState) {          View rootView = inflater.inflate(R.layout.fragment_home, container, false);          Button aboutBtn = (Button) rootView.findViewById(R.id.aboutusButton);         Button phonebookBtn = (Button) rootView.findViewById(R.id.phbookButton);         Button schemeBtn = (Button) rootView.findViewById(R.id.schemeButton);         Button loanBtn = (Button) rootView.findViewById(R.id.loanButton);         Button serviceBtn = (Button) rootView.findViewById(R.id.serviceButton);         Button devBtn = (Button) rootView.findViewById(R.id.devButton);          aboutBtn.setOnClickListener(new View.OnClickListener() {             public void onClick(View v)             {                 // Launching new Activity on selecting single List Item                 Intent i = new Intent(getActivity(), AboutFragment.class);                 startActivity(i);             }         });          phonebookBtn.setOnClickListener(new View.OnClickListener() {             public void onClick(View v)             {                 // Launching new Activity on selecting single List Item                 Intent j = new Intent(getActivity(), PhoneBookFragment.class);                 startActivity(j);             }         });          schemeBtn.setOnClickListener(new View.OnClickListener() {             public void onClick(View v)             {                 // Launching new Activity on selecting single List Item                 Intent k = new Intent(getActivity(), HomeFragment.class);                 startActivity(k);             }         });          loanBtn.setOnClickListener(new View.OnClickListener() {             public void onClick(View v)             {                 // Launching new Activity on selecting single List Item                 Intent l = new Intent(getActivity(), RemittanceFragment.class);                 startActivity(l);             }         });          serviceBtn.setOnClickListener(new View.OnClickListener() {             public void onClick(View v)             {                 // Launching new Activity on selecting single List Item                 Intent m = new Intent(getActivity(), ServiceFragment.class);                 startActivity(m);             }         });          devBtn.setOnClickListener(new View.OnClickListener() {             public void onClick(View v)             {                 // Launching new Activity on selecting single List Item                 Intent n = new Intent(getActivity(), AboutDeveloper.class);                 startActivity(n);             }         });           return rootView;     } } 

I am looking for something like bellow code but don't know how to make the code works with my code.

Button aboutBtn = (Button) v.findViewById(R.id.aboutButton); aboutBtn.setOnClickListener(this);  Button homeBtn = (Button) v.findViewById(R.id.homeButton); homeButton.setOnClickListener(this);  Button serviceBtn = (Button) v.findViewById(R.id.serviceButton); serviceBtn.setOnClickListener(this);  @Override public void onClick(View view) {     Fragment fragment = null;     switch (view.getId()) {         case aboutButton:             fragment = new AboutFragment();             break;          case homeBtn:             fragment = new PhonebookFragment();             break;          case serviceBtn:             fragment = new ServiceFragment();             break;          default:             fragment = new HomeFragment();             break;      } } 

Answer 1

You can replace the fragment using FragmentTransaction on button click. Something like this:

  Fragment someFragment = new SomeFragment();      FragmentTransaction transaction = getFragmentManager().beginTransaction();     transaction.replace(R.id.fragment_container, someFragment ); // give your fragment container id in first parameter     transaction.addToBackStack(null);  // if written, this transaction will be added to backstack     transaction.commit();  

Learn about performing fragment transactions here.

code:

  package com.rupomkhondaker.sonalibank;  import android.app.Fragment; import android.app.FragmentTransaction; import android.content.Intent; import android.os.Bundle; import android.view.LayoutInflater; import android.view.View; import android.view.ViewGroup; import android.widget.Button;  public class HomeFragment extends Fragment implements View.OnClickListener {      public HomeFragment() {     }      @Override     public View onCreateView(LayoutInflater inflater, ViewGroup container,                              Bundle savedInstanceState) {          View rootView = inflater.inflate(R.layout.fragment_home, container, false);          Button aboutBtn = (Button) rootView.findViewById(R.id.aboutusButton);         Button phonebookBtn = (Button) rootView.findViewById(R.id.phbookButton);          aboutBtn.setOnClickListener(this);         phonebookBtn.setOnClickListener(this);           return rootView;     }      @Override     public void onClick(View view) {         Fragment fragment = null;         switch (view.getId()) {             case R.id.aboutusButton:                 fragment = new AboutFragment();                 replaceFragment(fragment);                 break;              case R.id.phbookButton:                 fragment = new PhoneBookFragment();                 replaceFragment(fragment);                 break;         }     }      public void replaceFragment(Fragment someFragment) {         FragmentTransaction transaction = getFragmentManager().beginTransaction();         transaction.replace(R.id.frame_container, someFragment);         transaction.addToBackStack(null);         transaction.commit();     }   }