CODEWITHSUNDEEP
javaandroidandroid-fragments
Lion Heart
Lion Heart

Reputation: 1471

Replacing a fragment with another fragment inside activity group

I have a fragment inside a group activity and I want to replace it with another fragment:

FragmentTransaction ft = getActivity().getFragmentManager().beginTransaction();
SectionDescriptionFragment bdf = new SectionDescriptionFragment();
ft.replace(R.id.book_description_fragment, bdf);
ft.setTransition(FragmentTransaction.TRANSIT_FRAGMENT_OPEN);
ft.addToBackStack(null);
ft.commit();

It works fine when it is done as a seperate project without using activity group, every thing works fine in log cat as control goes inside getview(), but no view is visible, not even any exception arises, I want the book detail fragment to be replaced by section detail fragment.

Xml of book detail fragment has id book_description_fragment and xml for section description fragment has id section_description_fragment.

The above code is in onClick method of an item, I want that when user taps on an item in horizontal scroll view, then the fragment changes.

Upvotes: 146

Views: 336241

Answers (13)

Zero
Zero

Reputation: 51

To replace a fragment with another one do this, Note that R.id.fragment comes from the id that you give to the first tag of the fragment in the XML.

barAudioPlaying.setOnClickListener(view -> {
                getActivity().getSupportFragmentManager()
                        .beginTransaction()
                        .replace(R.id.fragment,new HomeFragment())
                        .commit();

Upvotes: 0

Saeed Darvish
Saeed Darvish

Reputation: 631

You can use fragment-ktx

// If you are in fragmet
childFragmentManager.beginTransaction()

// or if you are in activiry
supportFragmentManager.beginTransaction()

// Create and commit a new transaction
supportFragmentManager.commit {
  setReorderingAllowed(true)
  // Replace whatever is in the fragment_container view with this fragment
  replace<ExampleFragment>(R.id.fragment_container)
}

Upvotes: 0

emkarachchi
emkarachchi

Reputation: 802

This will work if you're trying to change the fragment from another fragment.

Objects.requireNonNull(getActivity()).getSupportFragmentManager()
.beginTransaction()
.replace(R.id.home_fragment_container,new NewFragment())

NOTE As stated in the above answers, You need to have dynamic fragments.

Upvotes: 0

Mahdi Safari
Mahdi Safari

Reputation: 298

I change fragment dynamically in single line code
It is work in any SDK version and androidx
I use navigation as BottomNavigationView

    BottomNavigationView btn_nav;
    FragmentFirst fragmentFirst;
    FragmentSecond fragmentSecond;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_search);
        fragmentFirst = new FragmentFirst();
        fragmentSecond = new FragmentSecond ();
        changeFragment(fragmentFirst); // at first time load the fragmentFirst
        btn_nav = findViewById(R.id.bottomNav);
        btn_nav.setOnNavigationItemSelectedListener(new BottomNavigationView.OnNavigationItemSelectedListener() {
            @Override
            public boolean onNavigationItemSelected(@NonNull MenuItem menuItem) {
                switch(menuItem.getItemId()){
                    case R.id.menu_first_frag:
                        changeFragment(fragmentFirst); // change fragmentFirst
                        break;
                    case R.id.menu_second_frag:
                        changeFragment(fragmentSecond); // change fragmentSecond
                        break;
                        default:
                            Toast.makeText(SearchActivity.this, "Click on wrong bottom SORRY!", Toast.LENGTH_SHORT).show();
                }
                return true;
            }
        });
    }

public void changeFragment(Fragment fragment) {
        getSupportFragmentManager().beginTransaction().replace(R.id.fragment_layout_changer, fragment).commit();
    }

Upvotes: 1

Diako Hasani
Diako Hasani

Reputation: 1494

You Can Use This code

((AppCompatActivity) getActivity()).getSupportFragmentManager().beginTransaction().replace(R.id.YourFrameLayout, new YourFragment()).commit();

or You Can This Use Code

YourFragment fragments=(YourFragment) getSupportFragmentManager().findFragmentById(R.id.FrameLayout);

        if (fragments==null) {
            getSupportFragmentManager().beginTransaction().replace(R.id.FrameLayout, new Fragment_News()).commit();
        }

Upvotes: 1

C--
C--

Reputation: 16568

Fragments that are hard coded in XML, cannot be replaced. If you need to replace a fragment with another, you should have added them dynamically, first of all.

Note: R.id.fragment_container is a layout or container of your choice in the activity you are bringing the fragment to.

// Create new fragment and transaction
Fragment newFragment = new ExampleFragment();
FragmentTransaction transaction = getSupportFragmentManager().beginTransaction();

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

// Commit the transaction
transaction.commit();

Upvotes: 265

Sachin Suthar
Sachin Suthar

Reputation: 692

Use the below code in android.support.v4

FragmentTransaction ft1 = getFragmentManager().beginTransaction();
WebViewFragment w1 = new WebViewFragment();
w1.init(linkData.getLink());
ft1.addToBackStack(linkData.getName());
ft1.replace(R.id.listFragment, w1);
ft1.commit();

Upvotes: 8

user8427383
user8427383

Reputation:

you can use simple code its work for transaction

Fragment newFragment = new MainCategoryFragment();
FragmentTransaction ft = getSupportFragmentManager().beginTransaction();
ft.replace(R.id.content_frame_NavButtom, newFragment);
ft.commit();

Upvotes: 1

Nicola Gallazzi
Nicola Gallazzi

Reputation: 8713

In kotlin you can do:

// instantiate the new fragment
val fragment: Fragment = ExampleFragment()

val transaction = supportFragmentManager.beginTransaction()
transaction.replace(R.id.book_description_fragment, fragment)
transaction.addToBackStack("transaction_name")
// Commit the transaction
transaction.commit()

Upvotes: 0

Nikolay
Nikolay

Reputation: 49

Use ViewPager. It's work for me.

final ViewPager viewPager = (ViewPager) getActivity().findViewById(R.id.vp_pager); 
button = (Button)result.findViewById(R.id.button);
button.setOnClickListener(new View.OnClickListener() {
    @Override
    public void onClick(View v) {
        viewPager.setCurrentItem(1);
    }
});

Upvotes: 4

Hugo Gresse
Hugo Gresse

Reputation: 17909

I've made a gist with THE perfect method to manage fragment replacement and lifecycle.

It only replace the current fragment by a new one, if it's not the same and if it's not in backstack (in this case it will pop it).

It contain several option as if you want the fragment to be saved in backstack.

=> See Gist here

Using this and a single Activity, you may want to add this to your activity:

@Override
public void onBackPressed() {
    int fragments = getSupportFragmentManager().getBackStackEntryCount();
    if (fragments == 1) {
            finish();
            return;
    }

    super.onBackPressed();
}

Upvotes: 8

John smith
John smith

Reputation: 1795

hope you are doing well.when I started work with Android Fragments then I was also having the same problem then I read about 1- How to switch fragment with other. 2- How to add fragment if Fragment container does not have any fragment.

then after some R&D, I created a function which helps me in many Projects till now and I am still using this simple function.

public void switchFragment(BaseFragment baseFragment) {
    try {
        FragmentTransaction ft = getSupportFragmentManager().beginTransaction();
        ft.setCustomAnimations(android.R.anim.slide_in_left, android.R.anim.slide_out_right);
        if (getSupportFragmentManager().findFragmentById(R.id.home_frame) == null) {
            ft.add(R.id.home_frame, baseFragment);
        } else {
            ft.replace(R.id.home_frame, baseFragment);
        }
        ft.addToBackStack(null);
        ft.commit();
    } catch (Exception e) {
        e.printStackTrace();
    }
}

enjoy your code time :)

Upvotes: 2

Sana
Sana

Reputation: 9915

Please see this Question

You can only replace a "dynamically added fragment".

So, if you want to add a dynamic fragment, see this example.

Upvotes: 37

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