androidx.fragment.app.FragmentTransaction#commit ( )源码实例Demo

@Override
public void onArtistSelected(ArtistModel artist, Bitmap bitmap) {
    // Create fragment and give it an argument for the selected article
    ArtistAlbumsFragment newFragment = ArtistAlbumsFragment.newInstance(artist, bitmap);

    FragmentTransaction transaction = getSupportFragmentManager().beginTransaction();

    // set enter / exit animation
    newFragment.setEnterTransition(new Slide(Gravity.BOTTOM));
    newFragment.setExitTransition(new Slide(Gravity.TOP));

    // Replace whatever is in the fragment_container view with this
    // fragment,
    // and add the transaction to the back stack so the user can navigate
    // back
    transaction.replace(R.id.fragment_container, newFragment);
    transaction.addToBackStack("ArtistFragment");

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

/**
 * Toggle API drawer
 */
public void showAPIDrawer(boolean b) {

    FragmentTransaction ft = getSupportFragmentManager().beginTransaction();
    ft.setCustomAnimations(R.anim.slide_in_left, R.anim.slide_out_left, R.anim.slide_out_left,
            R.anim.slide_out_left);

    if (b) {
        webviewFragment = new APIWebviewFragment();
        Bundle bundle = new Bundle();
        bundle.putString("url", "http://localhost:8585/reference.html");
        webviewFragment.setArguments(bundle);
        ft.add(R.id.fragmentWebview, webviewFragment).addToBackStack(null);

        editorFragment.getView().animate().translationX(-50).setDuration(500).start();
    } else {
        editorFragment.getView().animate().translationX(0).setDuration(500).start();
        ft.remove(webviewFragment);
    }

    ft.commit();
}
 

@Override
public void onNavigationDrawerItemSelected(int position) {
    // update the main content by replacing fragments
    FragmentManager fragmentManager = getSupportFragmentManager();
    FragmentTransaction trans = fragmentManager.beginTransaction();

    switch (position) {
        case 0: trans.replace(R.id.container, new AdMobAdListenerFragment()); break;
        case 1: trans.replace(R.id.container, new AdMobAdTargetingFragment()); break;
        case 2: trans.replace(R.id.container, new AdMobBannerSizesFragment()); break;
        case 3: trans.replace(R.id.container, new AdMobCustomMuteThisAdFragment()); break;
        case 4: trans.replace(R.id.container, new DFPFluidSizeFragment()); break;
        case 5: trans.replace(R.id.container, new DFPPPIDFragment()); break;
        case 6: trans.replace(R.id.container, new DFPCustomTargetingFragment()); break;
        case 7: trans.replace(R.id.container, new DFPCategoryExclusionFragment()); break;
        case 8: trans.replace(R.id.container, new DFPMultipleAdSizesFragment()); break;
        case 9: trans.replace(R.id.container, new DFPAppEventsFragment()); break;
        case 10: trans.replace(R.id.container, new DFPCustomControlsFragment()); break;
    }

    trans.commit();
}
 

private void openCreditFragment() {
    // If there is at least one fragment already created.
    if (getSupportFragmentManager().getFragments().size() > 0) {
        /*Check if the CreditFragment already exists (on the top of the current backstack)
    (and if it's the current fragment on the screen, so we don't do anything)*/
        if (isLastFragmentInBackStack(CREDIT_FRAGMENT)) return;
    }


    CreditFragment creditFragment = (CreditFragment) getSupportFragmentManager().findFragmentByTag(CREDIT_FRAGMENT);
    FrameLayout frameLayout = findViewById(R.id.blankFrameLayoutForFragments);
    FragmentTransaction fragmentTransaction = getSupportFragmentManager().beginTransaction();

    /*this fragment isn't present on the backstack*/
    if (creditFragment == null)
        fragmentTransaction.replace(frameLayout.getId(), CreditFragment.newInstance(), CREDIT_FRAGMENT).addToBackStack(CREDIT_FRAGMENT);

        /* put back the old fragment on the top of the backstack*/
    else
        fragmentTransaction.replace(frameLayout.getId(), creditFragment, CREDIT_FRAGMENT);
    fragmentTransaction.commit();
}
 

/**
 * Open {@link EditPoiFragment} to add more info o POi
 *
 * @param poi {@link ParcelablePOI} to edit
 */
public void editPoi(ParcelablePOI poi) {
    //check authentication before editing
    if (!checkAuthentication()) return;
    //close PoiListFragment if it is open
    PoiListFragment poiListFragment = (PoiListFragment) getSupportFragmentManager().findFragmentByTag("PoiListFragment");
    if (poiListFragment != null)
        getSupportFragmentManager()
                .beginTransaction()
                .remove(poiListFragment)
                .commit();

    //if MapFragment is open close any routing
    MapFragment MapFragment = (MapFragment) getSupportFragmentManager().findFragmentByTag("MapFragment");
    if (MapFragment != null) {
        MapFragment.clearMapDisplay();
    }

    Fragment fragment = EditPoiFragment.newInstance(poi);
    FragmentTransaction transaction = getSupportFragmentManager().beginTransaction();
    transaction.replace(R.id.container, fragment, "EditPoiFragment");// give your fragment container id in first parameter
    transaction.addToBackStack(null);  // if written, this transaction will be added to backstack
    transaction.commit();
    hideNavigation();
}
 

private void changeFragment(Fragment f, boolean allowBack) {
    FragmentManager fragmentManager = getSupportFragmentManager();

    // Prune the stack, so "back" always leads home.
    if (fragmentManager.getBackStackEntryCount() > 0) {
        onSupportNavigateUp();
    }

    FragmentTransaction transaction = fragmentManager.beginTransaction();
    transaction.replace(R.id.fragment_container, f);
    if (allowBack) {
        transaction.addToBackStack(null);
        transaction
                .setTransition(FragmentTransaction.TRANSIT_NONE);
    }
    transaction.commit();
}
 

@Override
public void openArtworkSettings() {
    // Create fragment and give it an argument for the selected directory
    ArtworkSettingsFragment newFragment = ArtworkSettingsFragment.newInstance();

    FragmentManager fragmentManager = getSupportFragmentManager();

    FragmentTransaction transaction = fragmentManager.beginTransaction();

    // set enter / exit animation
    final int layoutDirection = getResources().getConfiguration().getLayoutDirection();
    newFragment.setEnterTransition(new Slide(GravityCompat.getAbsoluteGravity(GravityCompat.START, layoutDirection)));
    newFragment.setExitTransition(new Slide(GravityCompat.getAbsoluteGravity(GravityCompat.END, layoutDirection)));

    transaction.addToBackStack("ArtworkSettingsFragment");

    transaction.replace(R.id.fragment_container, newFragment);

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

private void openCountrySelectFragment(int nodesType, String keyStr) {
    if (!isAdded()) {
        return;
    }

    FragmentTransaction fTrans = getParentFragmentManager().beginTransaction();
    fTrans.setTransition(FragmentTransaction.TRANSIT_FRAGMENT_FADE);
    Fragment frg = new CountrySelectFragment();
    Bundle bndl = new Bundle();
    bndl.putInt("nodes_type", nodesType);
    bndl.putString("countries", val_tor.get(key_tor.indexOf(keyStr)));
    frg.setArguments(bndl);
    fTrans.replace(android.R.id.content, frg, "CountrySelectFragment");
    fTrans.addToBackStack("CountrySelectFragmentTag");
    fTrans.commit();
}
 

private void onDirectorySelected(final String dirPath, final boolean isRootDirectory, final boolean addToBackStack) {
    // Create fragment and give it an argument for the selected directory
    final FilesFragment newFragment = FilesFragment.newInstance(dirPath, isRootDirectory);

    final FragmentManager fragmentManager = getSupportFragmentManager();

    final FragmentTransaction transaction = fragmentManager.beginTransaction();

    if (!isRootDirectory) {
        // no root directory so set a enter / exit transition
        final int layoutDirection = getResources().getConfiguration().getLayoutDirection();
        newFragment.setEnterTransition(new Slide(GravityCompat.getAbsoluteGravity(GravityCompat.START, layoutDirection)));
        newFragment.setExitTransition(new Slide(GravityCompat.getAbsoluteGravity(GravityCompat.END, layoutDirection)));
    }

    transaction.replace(R.id.fragment_container, newFragment);
    if (!isRootDirectory && addToBackStack) {
        // add fragment only to the backstack if it's not a root directory
        transaction.addToBackStack("FilesFragment");
    }

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

/**
 * Fragment の遷移.
 * @param f Fragment
 */
private void moveFragment(final Fragment f) {
    FragmentTransaction t = getSupportFragmentManager().beginTransaction();
    t.setTransition(FragmentTransaction.TRANSIT_NONE);
    t.replace(android.R.id.content, f);
    t.addToBackStack(null);
    t.commit();

}
 

/**
 * Pushes the @{link JobDetailsFragment} on the stack.
 *
 * @param jobId ID of the job of which the details should be displayed.
 */
@Override
public void showJobDetails(String jobId) {
    FragmentManager fm = getSupportFragmentManager();
    if (fm.getBackStackEntryCount() > 0 && JobDetailsFragment.TAG.equals(fm.getBackStackEntryAt(fm.getBackStackEntryCount() - 1).getName())) {
        fm.popBackStack();
    }
    FragmentTransaction ft = fm.beginTransaction();
    ft.setCustomAnimations(R.anim.right_enter, R.anim.right_exit, R.anim.right_enter, R.anim.right_exit);
    ft.add(R.id.container, JobDetailsFragment.newInstance(jobId), JobDetailsFragment.TAG);
    ft.addToBackStack(JobDetailsFragment.TAG);
    ft.commit();
}
 

/**
 * Pushes the @{link JobsFragment} on the stack.
 */
@Override
public void showJobs() {
    FragmentTransaction ft = getSupportFragmentManager().beginTransaction();
    ft.setCustomAnimations(R.anim.bottom_enter, R.anim.bottom_exit, R.anim.bottom_enter, R.anim.bottom_exit);
    ft.add(R.id.container, JobsFragment.newInstance(), JobsFragment.TAG);
    ft.addToBackStack(JobsFragment.TAG);
    ft.commit();
}
 

@Override
public void onActivityCreated(Bundle savedInstanceState) {
    FragmentTransaction fragmentTransaction = getChildFragmentManager().beginTransaction();
    fragmentTransaction.add(R.id.dialogchooserfl, FolderListFragment.newInstance("", true));
    fragmentTransaction.commit();

    super.onActivityCreated(savedInstanceState);
}
 

private void showStreetViewFragment(Detail detail) {
    StreetViewFragment streetViewFragment = getStreetViewFragment(detail);
    FragmentManager fragmentManager = getActivity().getSupportFragmentManager();
    FragmentTransaction transaction = fragmentManager.beginTransaction();
    /*
        The StreetViewFragment has to be added (not replaced)
        in order to get the transition animation right.
     */
    transaction.add(android.R.id.content, streetViewFragment, StreetViewFragment.TAG)
            .addToBackStack(StreetViewFragment.TAG);
    transaction.commit();
}
 

@Override
public void onLeftGame() {
    currentGame = null;
    ongoingGameFragment = null;
    gameChatFragment = null;
    AnalyticsApplication.sendAnalytics(Utils.ACTION_LEFT_GAME);

    inflateNavigation(Layout.LOBBY);
    navigation.setSelectedItem(Item.GAMES);

    synchronized (fragmentsLock) {
        FragmentManager manager = getSupportFragmentManager();
        FragmentTransaction transaction = manager.beginTransaction();

        try {
            Fragment ongoingGame = manager.findFragmentByTag(Item.ONGOING_GAME.tag);
            if (ongoingGame != null) transaction.remove(ongoingGame);

            Fragment gameChat = manager.findFragmentByTag(Item.GAME_CHAT.tag);
            if (gameChat != null) transaction.remove(gameChat);

            transaction.commit();
        } catch (IllegalStateException ex) {
            Log.d(TAG, "Failed fragments transaction on left game.", ex);
        }
    }
}
 

@Override
public void onActivityCreated(Bundle savedInstanceState) {
    FragmentTransaction fragmentTransaction = getChildFragmentManager().beginTransaction();
    FileManagerFragment fmf = FileManagerFragment.newInstance();
    Bundle bundle = new Bundle();
    bundle.putString(FileManagerFragment.ROOT_FOLDER, "/sdcard/phonk_io/examples");
    fmf.setArguments(bundle);
    fragmentTransaction.add(R.id.dialogchooserfl, fmf);
    fragmentTransaction.commit();

    super.onActivityCreated(savedInstanceState);
}
 

public void moveToFrag(Fragment frag) {
    //mFragment = frag;
    FragmentTransaction transaction = getSupportFragmentManager().beginTransaction().replace(R.id.basecontent, frag);
    if (frag != mDefaultFragment)
        transaction.addToBackStack(null);
    transaction.commit();
}
 

private void onEditRule(Intent intent) {
    FragmentRule fragment = new FragmentRule();
    fragment.setArguments(intent.getExtras());
    FragmentTransaction fragmentTransaction = getSupportFragmentManager().beginTransaction();
    fragmentTransaction.replace(R.id.content_frame, fragment).addToBackStack("rule");
    fragmentTransaction.commit();
}
 

private void showLicense(License license) {
  FragmentTransaction ft = getSupportFragmentManager().beginTransaction();
  ft.add(R.id.container, LicenseFragment.newInstance(license), "license");
  ft.addToBackStack(license.key);
  ft.commit();
}
 

@Override
        public boolean onNavigationItemSelected(@NonNull MenuItem item) {
            Fragment fragment;
            FragmentTransaction transaction = getSupportFragmentManager().beginTransaction();
            switch (item.getItemId()) {
                case R.id.navigation_categories:
                    fragment = CategoriesFragment.newInstance();
                    transaction.replace(R.id.content, fragment, "CategoriesFragment");
                    transaction.commit();
                    floatingActionButton.setVisibility(View.GONE);
                    fabPoiDetailsAfterRoute.hide();
                    return true;
                case R.id.navigation_map:
                    if (navigation.getSelectedItemId() != R.id.navigation_map) {
                        fragment = MapFragment.newInstance();
                        transaction.replace(R.id.content, fragment, "MapFragment");
                        transaction.commit();
                        floatingActionButton.setVisibility(View.VISIBLE);
//                        fabPoiDetailsAfterRoute.setVisibility(View.VISIBLE);
                    }
                    toggleFabPoiDetailsAfterRoute();

                    return true;
                case R.id.navigation_search:
                    fragment = SearchFragment.newInstance();
                    transaction.replace(R.id.content, fragment, "SearchFragment");
                    transaction.commit();
                    floatingActionButton.setVisibility(View.GONE);
                    fabPoiDetailsAfterRoute.hide();
                    return true;
                case R.id.navigation_favorites:
                    fragment = FavoritesFragment.newInstance();
                    transaction.replace(R.id.content, fragment, "FavoritesFragment");
                    transaction.commit();
                    floatingActionButton.setVisibility(View.GONE);
                    fabPoiDetailsAfterRoute.hide();
                    return true;
                case R.id.navigation_settings:
                    fragment = SettingsFragment.newInstance();
                    transaction.replace(R.id.content, fragment, "SettingsFragment");
                    transaction.commit();
                    floatingActionButton.setVisibility(View.GONE);
                    fabPoiDetailsAfterRoute.hide();
                    return true;
            }
            return false;
        }