Change Fragment from Click

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Change Fragment from Click

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#1 by (2 votes)

3

I'm trying to get my app to display a new Fragment from a click. The message is printed on the console when I click the button, but the fragment does not change.

@Override
public View onCreateView(final LayoutInflater inflater,
                         final ViewGroup container,
                         Bundle savedInstanceState) {
    View view = inflater.inflate(R.layout.fragment_start, container, false);

    FAB = (ImageButton) view.findViewById(R.id.imageButton);
    FAB.setOnClickListener(new View.OnClickListener() {

        public void onClick(View v) {

            View view = inflater.inflate(R.layout.fragment_info, container, false);
            System.out.println("Clique!");
        }

    });
}

Am I doing something wrong?

Thanks in advance for your help!

==========

When I start my application it shows a listing (in CardViews) of a series of records returned by my WebService.

On this same screen is displayed a FloatActionButton that is responsible for calling the form view. It was to create the action of this FAB that I opened this question. Currently, the onCreateView method of my Fragment that owns the FAB and the CardViews is as follows:

@Override
public View onCreateView(final LayoutInflater inflater,
                         final ViewGroup container,
                         Bundle savedInstanceState) {
    View view = inflater.inflate(R.layout.fragment_classrooms, container, false);

    FAB = (ImageButton) view.findViewById(R.id.imageButton);
    FAB.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View v) {
            NewClassroomFragment newClassroomFragment = new NewClassroomFragment();
            FragmentManager fm = getFragmentManager();
            FragmentTransaction ft = fm.beginTransaction();
            ft.replace(R.id.classrooms, newClassroomFragment);
            ft.commit();
            System.out.println("Clique!");
        }

    });
}

So far everything is working perfectly, thanks to the answers already received: when I click the button, my list view is replaced by the form view.

In this form there is an ImageView for which I created a ClickListener which has the responsibility of returning to the listing page with the CardViews. This image is a back button. The method for doing this is identical to the previous one:

@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
    View v = inflater.inflate(R.layout.fragment_new_classroom, container, false);

    BACK = (ImageView) v.findViewById(R.id.back);
    BACK.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View v) {
            ClassroomsFragment classroomFragment = new ClassroomsFragment();
            FragmentManager fm = getFragmentManager();
            FragmentTransaction ft = fm.beginTransaction();
            ft.addToBackStack(null);
            ft.replace(R.id.classrooms, classroomFragment);
            ft.commit();
            System.out.println("Voltar!");
        }

    });

    return v;
}

This back button is working perfectly, except that behind the CardViews you can see the old CardViews that were loaded before calling the form.

The flow is this:

Initial Screen with CardViews - > Form - > Initial Screen with CardViews.

The image below shows what is actually happening:

Note that in the spaces separating one CardView and another it is possible to see the cards loaded as soon as the app is executed.

android

asked by anonymous 29.09.2015 / 04:37

1 answer

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score 2 · Answer 1

In your Activity, create a method like this:

public void openFragment()
{
    Fragment fr = new Fragment();
    FragmentManager fm = getFragmentManager();
    FragmentTransaction fragmentTransaction = fm.beginTransaction();
    fragmentTransaction.replace(R.id.fragment_place, fr);
    fragmentTransaction.commit();
}

Your click method should look like this:

 public void onClick(View v) {
     openFragment();
     System.out.println("Clique!");
 }

For fragments, you should not change the view, but change the Fragment.

To better understand at a glance the documentation by clicking here .