Android fragments switch best practices

Android fragments switch best practices

By : Brain Tex
Date : November 20 2020, 01:01 AM
wish of those help You can just have a FrameLayout in your activity and you replace the fragment in this FrameLayout for each step. You can even customize the animation.
Edit: For tablet, you can have a horizontal LinearLayout. If you want the left Fragment (the list of types or the list of items) to take 1/3 of the screen and the right fragment (list of items or details) to take 2/3 of the screen, you can use the weight property of the LinearLayout.
code :
ViewGroup rightContainer = new FrameLayout(this);
rightContainer.setId(View.generateViewId()); // you need an ID to perform a fragment transaction
// api 17+ only, use static ID or copy/paste the code for lower platform
LinearLayout.LayoutParams lp = new LinearLayout.LayoutParams(0, ViewGroup.LayoutParams.MATCH_PARENT, 2); // the last param is the weight
  .add(rightContainer.getId(), ItemListFragment.newInstance(), "ITEM_LIST")
  // add custom transition if needed
ItemListFragment oldFragment = fragmentManager.findFragmentByTag("ITEM_LIST");
DetailFragment detailFragment = DetailFragment.newInstance();
  .replace(leftContainer.getId(), oldFragment, "ITEM_LIST")
  .replace(rightContainer.getId(), detailFragment, "DETAIL")

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Switch fragments without replacing Android

Switch fragments without replacing Android

By : user3733828
Date : March 29 2020, 07:55 AM
it fixes the issue What you can do is create all fragment with a String Tag name associated. Then add it your fragment transcation using fragment manager. After if you want to shift between the fragments, then write an if else statement and find the fragment by tag method.
code :
if (mFragManager.findFragmentByTag("FRAG_HOME") != null)
            showFragment(new homeFragment(), "FRAG_HOME");
public  void ShowFragment(Fragment fragment, String tag)

        mFragTransaction= mFragManager.BeginTransaction();
if (fragment.isAdded())
                mFragTransaction.add(ResId, fragment, tag).setBreadCrumbShortTitle(tag);



Android - Button won't switch fragments

Android - Button won't switch fragments

By : xcalber
Date : March 29 2020, 07:55 AM
this will help You are giving the container name as fragment_container but where is it? What you have to do is to give id to the FrameLayout as fragment_container.
add android:id="@+id/fragment_container" to the FrameLayout and you are ready to go.
Android toolbar change title practices for fragments

Android toolbar change title practices for fragments

By : Sergio Online
Date : March 29 2020, 07:55 AM
Any of those help I do it in Fragment's onResume method. Consider, that you can navigate back the FragmentManager history and the title should then change accordingly, too.
Android Fragments: switch beetwen fragments and back the last state

Android Fragments: switch beetwen fragments and back the last state

By : Bleppe
Date : March 29 2020, 07:55 AM
With these it helps Try this
Open fragments using this function.You have to pass the tag for that perticular fragment.
code :
private Fragment currentFragment;

    public void openNewFragment(Fragment f, String tag) {

        FragmentTransaction ft = getSupportFragmentManager().beginTransaction();
        Fragment fragment = getSupportFragmentManager().findFragmentByTag(tag);

            if (fragment != null) {
                if (currentFragment != null) {
                    if (fragment.getClass().equals(currentFragment.getClass())) {

                currentFragment = fragment;

            } else {
                if (currentFragment != null)
                ft.add(R.id.container, f, tag);
                currentFragment = f;

Android Switch Between Multiple Fragments In A Tab

Android Switch Between Multiple Fragments In A Tab

By : Esildor
Date : March 29 2020, 07:55 AM
I hope this helps you . A fragment can not switch another fragment directly(not recommended), this is done only through activity that holds all the fragment. Place the below code in your activity
code :
ViewPager viewPager;

protected void onCreate(Bundle savedInstanceState) {
    SectionsPagerAdapter sectionsPagerAdapter = new SectionsPagerAdapter(this, 
    viewPager = findViewById(R.id.view_pager);
    TabLayout tabs = findViewById(R.id.tabs);

public void onClickFirstFragButton(int index){
(MainActivity getActivity()).onClickFirstFragButton(index);
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