is it possible to pass a value from FragmentActivity to Fragment

Question

is it possible to pass a value from :FragmentActivity {} to Fragment {}.

Am implemented navigation drawer in my app and the problem is i have categories in the drawer menu. Now i want to pass the category id from public class MainActivity extends FragmentActivity {} to public class Galleries extends Fragment {}.little help is appreciated Edited : guys plz see the links below , i posted my codes there. Tell me how should i pass the Int pos value from OnclickListener in MainActivity to the fragment class Galleries. https://www.dropbox.com/s/pmcdjb3yorvp54w/MainActivity.txt https://www.dropbox.com/s/ivkc15bqz4vp8c5/fragment%20class.txt

Answer 1

I just fixed it.. Actually no need of constructor in Galleries fragment . I removed constructor and received the value simply by the following code int throwid = getArguments().getInt("ID"); Log.d("BUNDLE==NULL",String.valueOf(throwid)); passed the value by: public void onItemClick(AdapterView parent, View view, final int pos,final long id){

             final Galleries pass= new Galleries();
              Bundle args = new Bundle();
              args.putInt("ID", pos);
              pass.setArguments(args);
          if (pass!=null){ 
             Log.d("bundle","has value");
           }

                    drawer.setDrawerListener( new DrawerLayout.SimpleDrawerListener(){
                             @Override 
                             public void onDrawerClosed(View drawerView){
                                     super.onDrawerClosed(drawerView);

                                     //FragmentTransaction tx = getSupportFragmentManager().beginTransaction();
                                     //tx.replace(R.id.main,Fragment.instantiate(MainActivity.this, fragments[0]));
                                     FragmentTransaction tx = getSupportFragmentManager().beginTransaction(); tx.replace(R.id.main, pass); tx.commit();

Answer 2

From FragmentActivity you can send data to Fragment with intent as:

FragmentTransaction ftran = context.getFragmentManager().beginTransaction();
Bundle bundle=new Bundle();
bundle.putInt("Id", <your id here>);
Galleries fragobj=new Galleries ();
fragobj.setArguments(bundle);
ftran.replace(R.id.firstpage, R.id.galleryfragmentPage); 
ftran.commit();

and get id to next Fragment:

Bundle bundle = this.getArguments();
int myID = bundle.getInt("Id", 0);

I do not know what logic you have implmented. Try out as below:

   FragmentTransaction tx = getSupportFragmentManager().beginTransaction(); 
    Bundle bundle = new Bundle();
    String check="checking...";
bundle.putString("id_cat", check);
Galleries obj =new Galleries();
     obj.setArguments(bundle);
    Log.d("BUNDLE", bundle.toString());
    tx.replace(R.id.main, obj);
tx.setTransition(FragmentTransaction.TRANSIT_FRAGMENT_OPEN);
                                    // int position =5;
tx.commit();

Answer 3

Other than passing data in the Intent Bundle, there is a way to get direct access to a Fragment.

In a FragmentActivity, you use FragmentManager to add your Fragment.

You can also use FragmentManager to get your Fragment (using findById()). After getting it and casting it to your classname, you can then easily call public methods in your Fragment.

Example:

FragmentManager fm = getSupportFragmentManager();
MyFragment fragment = (MyFragment) fm.findFragmentById(R.id.fragmentContainer);

fragment.updateData(..);

EDIT

To get data from the passed intent do something like this:

Intent in = getActivity().getIntent();
String str = in.getStringExtra(EXTRA_STRING_DATA);

The getArguments() is for a Bundle attached to the Fragment, not the one passed in the Intent.

EDIT2

You can't create the Fragment the way you are doing it.

In your activity do this:

FragmentTransaction tx = getSupportFragmentManager().beginTransaction();

// int position =5;
String check="checking...";
Galleries fragment = Galleries,newInstance(check);
tx.replace(R.id.main, Fragment.instantiate(MainActivity.this, fragment));
tx.commit();

Create a static method in Galleries:

public static Fragment newInstance(String check) {
    Bundle args = new Bundle();
    args.putString("id_cat", check);
    Galleries fragment = new Galleries();
    fragment.setArguments(args);
    return fragment;
}

Now you can do getArguments() in onCreateView().