How to use setArguments and getArguments methods in Fragments

Question

I have 2 fragments   1 Frag1  2 Frag2   Frag1  bundl   new Bundle    bundl putStringArrayList  elist   eList    Frag2 dv   new Frag2    dv setArguments bundl   FragmentTransaction ft   getFragmentManager   beginTransaction    ft replace R id the fragg dv   ft show getFragmentManager   findFragmentById R id the fragg     ft addToBackStack null   ft commit      How do I get this data in Frag2

User · Answer

Instantiating the Fragment the correct way!

getArguments() setArguments() methods seem very useful when it comes to instantiating a Fragment using a static method.
ie Myfragment.createInstance(String msg)

How to do it?

Fragment code

public MyFragment extends Fragment {

    private String displayMsg;
    private TextView text;

    public static MyFragment createInstance(String displayMsg)
    {
        MyFragment fragment = new MyFragment();
        Bundle args = new Bundle();
        args.setString("KEY",displayMsg);
        fragment.setArguments(args);           //set
        return fragment;
    }

    @Override
    public void onCreate(Bundle bundle)
    {
        displayMsg = getArguments().getString("KEY"):    // get 
    }

    @Override
    public View onCreateView(LayoutInlater inflater, ViewGroup parent, Bundle bundle){
        View view = inflater.inflate(R.id.placeholder,parent,false);
        text = (TextView)view.findViewById(R.id.myTextView);
        text.setText(displayMsg)    // show msg
        returm view;
   }

}

Let's say you want to pass a String while creating an Instance. This is how you will do it.

MyFragment.createInstance("This String will be shown in textView");

Eg  Add data -      Bundle bundle   new Bundle       bundle putString  latitude   latitude      bundle putString  longitude   longitude      bundle putString  board id   board id      MapFragment mapFragment   new MapFragment       mapFragment setArguments bundle     Eg  Get data  -   String latitude    getArguments   getString  latitude

User · Answer

If you are using navigation components and navigation graph create a bundle like this val bundle   bundleOf KEY to VALUE     or whatever you would like to create the bundle  then when navigating to the other fragment use this  findNavController   navigate          R id action navigate from frag1 to frag2          bundle        and when you land the destination fragment u can access that bundle using Bundle b   getArguments     in Java  or val b   arguments   in kotlin

User · Answer

for those like me who are looking to send objects other than primitives   since you can t create a parameterized constructor in your fragment  just add a setter accessor in your fragment  this always works for me

User · Answer

Just call getArguments   in your Frag2 s onCreateView   method   public class Frag2 extends Fragment         public View onCreateView LayoutInflater inflater           ViewGroup containerObject           Bundle savedInstanceState              here is your arguments          Bundle bundle getArguments                here is your list array          String   myStrings bundle getStringArray  elist

User · Answer

in Frag1   Bundle b   new Bundle     b putStringArray  arrayname that use to retrive in frag2  StringArrayObject    Frag2 setArguments b     in Frag2   Bundle b   getArguments     String   stringArray   b getStringArray  arrayname that passed in frag1      It s that simple

User · Answer

You have a method called getArguments   that belongs to Fragment class

[android] How to use setArguments() and getArguments() methods in Fragments?

Instantiating the Fragment the correct way!

Read More

Examples related to android

Examples related to android-fragments