CODEWITHSUNDEEP
androidandroid-intentandroid-fragments
Davek804
Davek804

Reputation: 2804

Start a fragment via Intent within a Fragment

I want to launch a new fragment to view some data. Currently, I have a main activity that has a bunch of actionbar tabs, each of which is a fragment. So, within a tab fragment, I have a button, chartsButton. I have my onclicklistener all set for it, and here's the onClick method:

public OnClickListener chartsListener = new OnClickListener() {

    @Override
    public void onClick(View v) {
        Intent chartFragment = new Intent();
        startActivity(chartFragment);   
    }
};

Now, as I said, this listener is within a class that extends Fragment. So, I want to launch a new fragment (chartsFragment) via the intent to replace the whole screen. When the user clicks back, it'll bring them back to the tabs and main activity. Here's my chart fragment: 

public class chartsFragment extends Fragment {

    public View onCreateView() {
        //LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState
        LayoutInflater inflater = (LayoutInflater) getActivity().getSystemService(Context.LAYOUT_INFLATER_SERVICE);
        return (inflater.inflate(R.layout.chartfragment, null));
    }
}

The current error I am dealing with: "android.content.ActivityNotFoundException: No Activity found to handle Intent { }". That's fine, I understand that I could use getActivity().startActivity(chartsFragment), but that results in the same error. I suppose what I am looking for here, is how do I launch an intent from within a fragment that results in opening a new fragment?

Upvotes: 30

Views: 143595

Answers (5)

Idir Belmokhtar
Idir Belmokhtar

Reputation: 173

try this:

in SecondActivity:

btn.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View view) {
            Intent intent = new Intent(this, FirstActivity.class);
            intent.putExtra("openFragment", "YourFragment");
            startActivity(intent);
        }
    });

In the FisrtActivity that contains the fragment:

if (getIntent().getStringExtra("openFragment").equals("YourFragment")){
            getSupportFragmentManager().beginTransaction().replace(R.id.containerView, new YourFragment()).commit();
        }

Upvotes: 1

Gilad Brunfman
Gilad Brunfman

Reputation: 3502

Try this it may help you:

private void changeFragment(Fragment targetFragment){

    getSupportFragmentManager()
         .beginTransaction()
         .replace(R.id.main_fragment, targetFragment, "fragment")
         .setTransitionStyle(FragmentTransaction.TRANSIT_FRAGMENT_FADE)
         .commit();

}

Upvotes: 0

Amit Jayaswal
Amit Jayaswal

Reputation: 1723

Try this it may help you:

public void ButtonClick(View view) {
    Fragment mFragment = new YourNextFragment(); 
    getSupportFragmentManager().beginTransaction().replace(R.id.content_frame, mFragment).commit();
}

Upvotes: 6

slinden77
slinden77

Reputation: 3388

The answer to your problem is easy: replace the current Fragment with the new Fragment and push transaction onto the backstack. This preserves back button behaviour...

Creating a new Activity really defeats the whole purpose to use fragments anyway...very counter productive.

@Override
public void onClick(View v) {
    // Create new fragment and transaction
    Fragment newFragment = new chartsFragment(); 
    // consider using Java coding conventions (upper first char class names!!!)
    FragmentTransaction transaction = getFragmentManager().beginTransaction();

    // Replace whatever is in the fragment_container view with this fragment,
    // and add the transaction to the back stack
    transaction.replace(R.id.fragment_container, newFragment);
    transaction.addToBackStack(null);

    // Commit the transaction
    transaction.commit(); 
}

http://developer.android.com/guide/components/fragments.html#Transactions

Upvotes: 60

RaB
RaB

Reputation: 1565

You cannot open new fragments. Fragments need to be always hosted by an activity. If the fragment is in the same activity (eg tabs) then the back key navigation is going to be tricky I am assuming that you want to open a new screen with that fragment.

So you would simply create a new activity and put the new fragment in there. That activity would then react to the intent either explicitly via the activity class or implicitly via intent filters.

Upvotes: 23

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