How to transfer some data to another Fragment

Question

How to transfer some data to another Fragment likewise it was done with extras for intents

User · Answer

Just to extend previous answers - it could help someone  If your getArguments   returns null  put it to onCreate   method and not to constructor of your fragment    Override public void onCreate Bundle savedInstanceState        super onCreate savedInstanceState       int index   getArguments   getInt  index

User · Answer

Use a Bundle  Here s an example   Fragment fragment   new Fragment    Bundle bundle   new Bundle    bundle putInt key  value   fragment setArguments bundle     Bundle has put methods for lots of data types   See this  Then in your Fragment  retrieve the data  e g  in onCreate   method  with   Bundle bundle   this getArguments    if  bundle    null            int myInt   bundle getInt key  defaultValue

User · Answer

To extend the previous answer even more  like Ankit was saying  for complex objects you need to implement Serializable  For example  for the simple object   public class MyClass implements Serializable       private static final long serialVersionUID   -2163051469151804394L      private int id      private String created      In you FromFragment   Bundle args   new Bundle    args putSerializable TAG MY CLASS  myClass   Fragment toFragment   new ToFragment    toFragment setArguments args   getFragmentManager        beginTransaction        replace R id body  toFragment  TAG TO FRAGMENT       addToBackStack TAG TO FRAGMENT  commit      in your ToFragment    Override public View onCreateView LayoutInflater inflater  ViewGroup container              Bundle savedInstanceState         Bundle args   getArguments        MyClass myClass    MyClass  args          getSerializable TAG MY CLASS

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If you are using graph for navigation between fragments you can do this  From fragment A      Bundle bundle   new Bundle        bundle putSerializable KEY  yourObject       Navigation findNavController view  navigate R id fragment  bundle    To fragment B      Bundle bundle   getArguments        object    Object  bundle getSerializable KEY    Of course your object must implement Serializable

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Complete code of passing data using fragment to fragment   Fragment fragment   new Fragment       replace your custom fragment class  Bundle bundle   new Bundle    FragmentTransaction fragmentTransaction   getSupportFragmentManager   beginTransaction                    bundle putString  key   value       use as per your need                 fragment setArguments bundle                   fragmentTransaction addToBackStack null                   fragmentTransaction replace viewID fragment                   fragmentTransaction commit      In custom fragment class  Bundle mBundle   new Bundle    mBundle   getArguments    mBundle getString key       key must be same which was given in first fragment

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From Activity Class   Send the data using bundle arguments to the fragment and load the fragment     Fragment fragment   new myFragment       Bundle bundle   new Bundle       bundle putString  pName   personName      bundle putString  pEmail   personEmail      bundle putString  pId   personId      fragment setArguments bundle       getSupportFragmentManager   beginTransaction   replace R id fragment container                      fragment  commit      From myFragment Class   Get the arguments from the bundle and set them to xml      Bundle arguments   getArguments        String personName   arguments getString  pName        String personEmail   arguments getString  pEmail        String personId   arguments getString  pId         nameTV   v findViewById R id name       emailTV   v findViewById R id email       idTV   v findViewById R id id        nameTV setText  Name     personName       emailTV setText  Email     personEmail       idTV setText  ID     personId

User · Answer

This is how you use bundle   Bundle b   new Bundle    b putInt  id   id   Fragment frag  new Fragment    frag setArguments b     retrieve value from bundle    bundle   getArguments     if  bundle    null        id   bundle getInt  id

User · Answer

getArguments   is returning null because  Its doesn t get anything    Try this code to handle this situation  if getArguments    null    int myInt   getArguments   getInt key  defaultValue

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First Fragment Sending String To Next Fragment             public class MainActivity extends AppCompatActivity                       private Button Add                      private EditText edt                      FragmentManager fragmentManager                      FragClass1 fragClass1                         Override                     protected void onCreate Bundle savedInstanceState                            super onCreate savedInstanceState                           setContentView R layout activity main                           Add   Button  findViewById R id BtnNext                           edt   EditText  findViewById R id editText                            Add setOnClickListener new View OnClickListener                                  Override                             public void onClick View v                                    fragClass1 new FragClass1                                    Bundle bundle new Bundle                                     fragmentManager getSupportFragmentManager                                    fragClass1 setArguments bundle                                   bundle putString  hello  edt getText   toString                                     FragmentTransaction fragmentTransaction fragmentManager beginTransaction                                    fragmentTransaction add R id activity main fragClass1                                      fragmentTransaction addToBackStack null                                   fragmentTransaction commit                                                                                                                Next Fragment to fetch the string              public class FragClass1 extends Fragment                     EditText showFrag1                         Nullable                      Override                     public View onCreateView LayoutInflater inflater   Nullable ViewGroup container   Nullable Bundle savedInstanceState                             View view inflater inflate R layout lay frag1 null                           showFrag1   EditText  view findViewById R id edtText                           Bundle bundle getArguments                            String a getArguments   getString  hello     Use This or The Below Commented Code                         showFrag1 setText a                             showFrag1 setText String valueOf bundle getString  hello                              return view                                              I used Frame Layout easy to use      Don t Forget to Add Background color or else fragment will overlap  This is for First Fragment       lt FrameLayout xmlns android  http   schemas android com apk res android          xmlns tools  http   schemas android com tools          android id    id activity main          android layout width  match parent          android layout height  match parent          android paddingBottom   dimen activity vertical margin          android paddingLeft   dimen activity horizontal margin          android paddingRight   dimen activity horizontal margin          android paddingTop   dimen activity vertical margin          android background   color colorPrimary          tools context  com example sumedh fragmentpractice1 MainActivity  gt            lt EditText             android layout width  match parent              android layout height  wrap content              android id    id editText    gt           lt Button             android layout width  match parent              android layout height  wrap content              android layout gravity  center              android id    id BtnNext   gt       lt  FrameLayout gt    Xml for Next Fragment   lt LinearLayout xmlns android  http   schemas android com apk res android      android orientation  vertical  android layout width  match parent     android background   color colorAccent      android layout height  match parent  gt       lt EditText         android layout width  match parent          android layout height  wrap content          android id    id edtText   gt    lt  LinearLayout gt

User · Answer

Your input fragment   public class SecondFragment extends Fragment          EditText etext      Button btn      String etex       Override     public View onCreateView LayoutInflater inflater  ViewGroup container  Bundle savedInstanceState            View v   inflater inflate R layout secondfragment  container  false           etext    EditText  v findViewById R id editText4           btn    Button  v findViewById R id button           btn setOnClickListener mClickListener           return v             View OnClickListener mClickListener   new View OnClickListener              Override         public void onClick View v                  etex   etext getText   toString                FragmentTransaction transection   getFragmentManager   beginTransaction                Viewfragment mfragment   new Viewfragment                  using Bundle to send data             Bundle bundle   new Bundle                bundle putString  textbox   etex               mfragment setArguments bundle     data being send to SecondFragment             transection replace R id frame  mfragment               transection isAddToBackStackAllowed                transection addToBackStack null               transection commit                             your view fragment   public class Viewfragment extends Fragment        TextView txtv      public View onCreateView LayoutInflater inflater  ViewGroup container  Bundle savedInstanceState            View v   inflater inflate R layout viewfrag container false           txtv    TextView   v findViewById R id textView4           Bundle bundle getArguments            txtv setText String valueOf bundle getString  textbox              return v

[android] How to transfer some data to another Fragment?

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