androidx.fragment.app.Fragment Java Examples

@Override
public boolean onTransition(Context context, FragmentTransaction transaction,
        Fragment exit, Fragment enter) {
    if (mThumb == null || !(enter instanceof GalleryDetailScene)) {
        return false;
    }

    String transitionName = ViewCompat.getTransitionName(mThumb);
    if (transitionName != null) {
        exit.setSharedElementReturnTransition(
                TransitionInflater.from(context).inflateTransition(R.transition.trans_move));
        exit.setExitTransition(
                TransitionInflater.from(context).inflateTransition(R.transition.trans_fade));
        enter.setSharedElementEnterTransition(
                TransitionInflater.from(context).inflateTransition(R.transition.trans_move));
        enter.setEnterTransition(
                TransitionInflater.from(context).inflateTransition(R.transition.trans_fade));
        transaction.addSharedElement(mThumb, transitionName);
    }
    return true;
}
 

@RequiresApi(api = Build.VERSION_CODES.JELLY_BEAN_MR2)
public AddBeaconChoicePreferenceDummy(Context context, Fragment fragment) {
    super(context);
    setKey(DUMMY);
    setIcon(android.R.drawable.ic_menu_add);
    setTitle(R.string.add_beacon_title);
    setSummary(R.string.add_beacon_summary);
    setOnPreferenceClickListener(prefs -> {
        BluetoothManager bluetoothManager = (BluetoothManager) getContext().getSystemService(Context.BLUETOOTH_SERVICE);
        if (bluetoothManager == null) {
            HyperLog.w(TAG, "Unable to get bluetooth manager");
        } else {
            BluetoothAdapter bluetoothAdapter = bluetoothManager.getAdapter();
            if (bluetoothAdapter == null || !bluetoothAdapter.isEnabled()) {
                Intent enableBtIntent = new Intent(BluetoothAdapter.ACTION_REQUEST_ENABLE);
                fragment.startActivityForResult(enableBtIntent, ON_DEMAND_BLUETOOTH_REQUEST_CODE);
                return true;
            }
        }
        BeaconScanDialogFragment instance = getInstance(getContext(), this::onScanResult,
                getSharedPreferences().getStringSet(BEACON_LIST, Collections.emptySet()));
        instance.show(fragment.requireFragmentManager(), null);
        return true;
    });
}
 

/** Removes all added fragments and clears the stack. */
public void destroy() {
  if (!allowTransactions()) {
    return;
  }

  commit();

  ensureTransaction();
  fragmentTransaction.setCustomAnimations(enterAnimation, exitAnimation);

  final Fragment topFragment = stack.peekFirst();
  for (Fragment f : stack) {
    if (f != topFragment) removeFragment(f);
  }
  stack.clear();

  for (String tag : topLevelTags) {
    removeFragment(fragmentManager.findFragmentByTag(tag));
  }

  fragmentTransaction.commitNow();
  fragmentTransaction = null;
}
 

public void setupViewsForKey(BaseKey key) {
    if(key.shouldShowUp()) {
        drawerLayout.setDrawerLockMode(LOCK_MODE_LOCKED_CLOSED, GravityCompat.START);
        drawerToggle.setDrawerIndicatorEnabled(false);
        getSupportActionBar().setDisplayHomeAsUpEnabled(true);
    } else {
        drawerLayout.setDrawerLockMode(LOCK_MODE_UNLOCKED, GravityCompat.START);
        getSupportActionBar().setDisplayHomeAsUpEnabled(false);
        drawerToggle.setDrawerIndicatorEnabled(true);
    }
    drawerToggle.syncState();
    setCheckedItem(key.navigationViewId());
    supportInvalidateOptionsMenu();
    if(key.isFabVisible()) {
        fab.show();
    } else {
        fab.hide();
    }
    Fragment fragment = getSupportFragmentManager().findFragmentByTag(key.getFragmentTag());
    key.setupFab(fragment, fab);
}
 

public static ConfirmationDialogFragment newInstance(
        final String title, final String message, final String positive,
        final String negative, final Fragment fragment) {
    Bundle args = new Bundle();
    args.putString(EXTRA_TITLE, title);
    args.putString(EXTRA_MESSAGE, message);
    if (positive != null) {
        args.putString(EXTRA_POSITIVE, positive);
    }
    if (negative != null) {
        args.putString(EXTRA_NEGATIVE, negative);
    }

    ConfirmationDialogFragment f = new ConfirmationDialogFragment();
    f.setArguments(args);
    if (fragment != null) {
        f.setTargetFragment(fragment, 0);
    }
    return f;
}
 

private static void checkCallingObjectSuitability(Object object) {
    // Make sure Object is an Activity or Fragment
    boolean isActivity = object instanceof Activity;
    boolean isSupportFragment = object instanceof Fragment;
    boolean isAppFragment = object instanceof android.app.Fragment;
    boolean isMinSdkM = Build.VERSION.SDK_INT >= Build.VERSION_CODES.M;

    if (!(isSupportFragment || isActivity || (isAppFragment && isMinSdkM))) {
        if (isAppFragment) {
            throw new IllegalArgumentException(
                    "Target SDK needs to be greater than 23 if caller is android.app.Fragment");
        } else {
            throw new IllegalArgumentException("Caller must be an Activity or a Fragment.");
        }
    }
}
 

private void handleHideBottomBarWhenPushed(int transit, boolean enter, PresentAnimation animation) {
    // handle hidesBottomBarWhenPushed
    Fragment parent = getParentFragment();
    if (parent instanceof NavigationFragment) {
        NavigationFragment navigationFragment = (NavigationFragment) parent;
        TabBarFragment tabBarFragment = navigationFragment.getTabBarFragment();
        if (tabBarFragment == null || !enter) {
            return;
        }

        int index = getIndexAtBackStack();
        if (transit == FragmentTransaction.TRANSIT_FRAGMENT_OPEN) {
            if (index == 0) {
                if (tabBarFragment.getTabBar() != null) {
                    tabBarFragment.showTabBarWhenPop(R.anim.nav_none);
                }
            } else if (index == 1 && shouldHideTabBarWhenPushed()) {
                tabBarFragment.hideTabBarWhenPush(animation.exit);
            }
        } else if (transit == FragmentTransaction.TRANSIT_FRAGMENT_CLOSE) {
            if (index == 0 && shouldHideTabBarWhenPushed()) {
                tabBarFragment.showTabBarWhenPop(animation.popEnter);
            }
        }
    }
}
 

private void notifyDataSetChanged() {
    View parentLayout = findViewById(R.id.content_frame);
    String frameworkUpdateVersion = mRepoLoader.getFrameworkUpdateVersion();
    boolean moduleUpdateAvailable = mRepoLoader.hasModuleUpdates();

    Fragment currentFragment = getSupportFragmentManager()
            .findFragmentById(R.id.content_frame);
    if (currentFragment instanceof DownloadDetailsFragment) {
        if (frameworkUpdateVersion != null) {
            Snackbar.make(parentLayout, R.string.welcome_framework_update_available + " " + frameworkUpdateVersion, Snackbar.LENGTH_LONG).show();
        }
    }

    boolean snackBar = getSharedPreferences(
            getPackageName() + "_preferences", MODE_PRIVATE).getBoolean("snack_bar", true);

    if (moduleUpdateAvailable && snackBar) {
        Snackbar.make(parentLayout, R.string.modules_updates_available, Snackbar.LENGTH_LONG).setAction(getString(R.string.view), view -> switchFragment(4)).show();
    }
}
 

/**
 * ダイアログ表示のためのヘルパーメソッド
 * こっちはCharSequenceとしてメッセージ内容を指定
 * @param parent
 * @param requestCode
 * @param id_title
 * @param message
 * @param canceledOnTouchOutside
 * @param userArgs
 * @return
 * @throws IllegalStateException
 */
public static ConfirmDialogV4 showDialog(
	@NonNull final Fragment parent, final int requestCode,
	@StringRes final int id_title, @NonNull final CharSequence message,
	final boolean canceledOnTouchOutside,
	@Nullable final Bundle userArgs) throws IllegalStateException {

	final ConfirmDialogV4 dialog
		= newInstance(requestCode,
			id_title, 0, message,
			canceledOnTouchOutside,
			userArgs);
	dialog.setTargetFragment(parent, parent.getId());
	dialog.show(parent.getParentFragmentManager(), TAG);
	return dialog;
}
 

@Override
	public void onAttach(@NonNull final Context context) {
		super.onAttach(context);
		// コールバックインターフェースを取得
		if (context instanceof MessageDialogListener) {
			mDialogListener = (MessageDialogListener)context;
		}
		if (mDialogListener == null) {
			final Fragment fragment = getTargetFragment();
			if (fragment instanceof MessageDialogListener) {
				mDialogListener = (MessageDialogListener)fragment;
			}
		}
		if (mDialogListener == null) {
			if (BuildCheck.isAndroid4_2()) {
				final Fragment target = getParentFragment();
				if (target instanceof MessageDialogListener) {
					mDialogListener = (MessageDialogListener)target;
				}
			}
		}
		if (mDialogListener == null) {
//			Log.w(TAG, "caller activity/fragment must implement PermissionDetailDialogFragmentListener");
        	throw new ClassCastException(context.toString());
		}
	}
 

public void dispatchKeyShortcutEvent(int keyCode) {
    switch(keyCode) {
            // CTRL+N: New Note
        case KeyEvent.KEYCODE_N:
            Bundle bundle = new Bundle();
            bundle.putString("filename", "new");

            Fragment fragment = new NoteEditFragment();
            fragment.setArguments(bundle);

            // Add NoteEditFragment
            getFragmentManager()
                .beginTransaction()
                .replace(R.id.noteViewEdit, fragment, "NoteEditFragment")
                .setTransition(FragmentTransaction.TRANSIT_FRAGMENT_CLOSE)
                .commit();
            break;
    }
}
 

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);
    unbinder = ButterKnife.bind(this);

    setSupportActionBar(toolbar);

    if(savedInstanceState == null){
        showRootFragment(SpendingListFragment.newInstance());
    }

    fragmentManager.addOnBackStackChangedListener(() -> {
        List<Fragment> fragments = fragmentManager.getFragments();
        Fragment lastFragment = fragments.get(fragments.size() - 1);

        if(lastFragment instanceof SpendingListFragment){
            appBarLayout.setExpanded(true);
            fab.show();
        } else {
            appBarLayout.setExpanded(false);
            fab.hide();
        }
    });
}
 

@Override
public boolean onPreferenceStartFragment(PreferenceFragmentCompat caller, androidx.preference.Preference pref) {

    // Instantiate the new Fragment
    final Bundle args = pref.getExtras();
    final Fragment fragment = getSupportFragmentManager().getFragmentFactory().instantiate(
            getClassLoader(),
            pref.getFragment());
    fragment.setArguments(args);
    fragment.setTargetFragment(caller, 0);

    // Replace the existing Fragment with the new Fragment
    getSupportFragmentManager().beginTransaction()
            .replace(android.R.id.content, fragment)
            .addToBackStack(null)
            .commit();
    return true;
}
 

@Override public boolean onOptionsItemSelected(@NonNull MenuItem item) {
    // If we're currently saving data - don't do anything.
    if (isSaving.get()) {
        return true;
    }

    // Don't do anything if we're showing the tz fragment.
    Fragment tzFragment = BackstackManager.getInstance().getFragmentOnStack(TimezonePickerPopup.class);
    if (tzFragment != null && tzFragment instanceof TimezonePickerPopup && tzFragment.isVisible()) {
        return true;
    }

    // If for some reason we clicked on something that shouldn't be there....
    if (item.getItemId() != R.id.menu_edit_contact) {
        return super.onOptionsItemSelected(item);
    }

    // Else update the editing/not editing mode.
    String menuTitle = String.valueOf(item.getTitle());
    boolean editing = edit.equalsIgnoreCase(menuTitle);
    item.setTitle(editing ? done : edit);
    enableInput(editing);

    return true;
}
 

/**
 * Creates a new instance of the {@link CustomActionPickerBottomSheet} for the specified custom items.
 *
 * @param fragment the host fragment
 * @param items the custom action items
 * @param config the sheet configuration
 * @return the created {@link CustomActionPickerBottomSheet}
 */
@NonNull
public static <IT extends BaseActionItem> CustomActionPickerBottomSheet<IT> init(@NonNull Fragment fragment,
                                                                                 @NonNull List<IT> items,
                                                                                 @NonNull ActionPickerConfig config) {
    Preconditions.nonNull(fragment);
    Preconditions.nonNull(fragment.getActivity());
    Preconditions.nonNull(items);
    Preconditions.nonNull(config);

    return init(
        fragment.getActivity(),
        items,
        new ActionPickerItemResources(),
        config
    );
}
 

@NonNull
@Override
public Object instantiateItem(@NonNull ViewGroup container, int position) {
    if (mUpdateFlag) {
        Fragment fragment = (Fragment) super.instantiateItem(container, position);
        String tag = fragment.getTag();
        FragmentTransaction transaction = mFragmentManager.beginTransaction();
        transaction.remove(fragment);
        fragment = getItem(position);
        if (!fragment.isAdded()) {
            transaction.add(container.getId(), fragment, tag)
                    .attach(fragment)
                    .commitAllowingStateLoss();
        }
        return fragment;
    }
    return super.instantiateItem(container, position);
}
 

private void testBindUntilEvent(LifecycleProvider<FragmentEvent> provider) {
    Fragment fragment = (Fragment) provider;
    startFragment(fragment);

    TestObserver<Object> testObserver = observable.compose(provider.bindUntilEvent(STOP)).test();

    fragment.onAttach(null);
    testObserver.assertNotComplete();
    fragment.onCreate(null);
    testObserver.assertNotComplete();
    fragment.onViewCreated(null, null);
    testObserver.assertNotComplete();
    fragment.onStart();
    testObserver.assertNotComplete();
    fragment.onResume();
    testObserver.assertNotComplete();
    fragment.onPause();
    testObserver.assertNotComplete();
    fragment.onStop();
    testObserver.assertComplete();
}
 

@Override
public Fragment getItem(int position) {
    if (mFragments[position] != null) {
        return mFragments[position];
    }
    String fragmentName;
    Bundle args = new Bundle();
    args.putBoolean(LazyLoadFragment.EXTRA_EAGER_LOAD, mDefaultItem == position);
    if (position == 0) {
        args.putParcelable(ItemFragment.EXTRA_ITEM, mItem);
        args.putInt(ItemFragment.EXTRA_CACHE_MODE, mCacheMode);
        args.putBoolean(ItemFragment.EXTRA_RETAIN_INSTANCE, mRetainInstance);
        fragmentName = ItemFragment.class.getName();
    } else {
        args.putParcelable(WebFragment.EXTRA_ITEM, mItem);
        args.putBoolean(WebFragment.EXTRA_RETAIN_INSTANCE, mRetainInstance);
        fragmentName = WebFragment.class.getName();
    }
    return Fragment.instantiate(mContext, fragmentName, args);
}
 

public static void showDialog(@Nullable Fragment fragment, @NonNull DialogFragment dialog, @Nullable String tag) {
    if (fragment == null) return;

    FragmentManager manager = fragment.getChildFragmentManager();
    try {
        dialog.show(manager, tag);
    } catch (IllegalStateException ex) {
        Log.e(TAG, "Failed showing dialog.", ex); // We can't do nothing
    }
}
 

protected void replaceFragment(int containerViewId, Fragment fragment, boolean addToback) {
    FragmentTransaction ft = getSupportFragmentManager().beginTransaction().replace(containerViewId, fragment);
    if (addToback) {
        ft.addToBackStack(fragment.getClass().getName());
    }
    ft.commit();
}
 

private Fragment getFragment() {
    Fragment fragment = getSupportFragmentManager().findFragmentByTag("fragment");
    if (fragment == null) {
        fragment = ProfileEditFragment.newInstance(mPosition);
    }
    return fragment;
}
 

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_settings);
    Fragment preferenceFragment = new SettingsFragment();
    FragmentTransaction ft = getSupportFragmentManager().beginTransaction();
    ft.add(R.id.pref_container, preferenceFragment);
    ft.commit();
}
 

@Override
public void init(Fragment fragment) {
    Bundle bundle = fragment.getArguments();
    assert bundle != null;
    title = bundle.getString("title");
    isSingleChoice = bundle.getBoolean("isSingleChoice");
    checkBookAdded = bundle.getBoolean("checkBookAdded");
    isImage = bundle.getBoolean("isImage");
    ArrayList<String> list = bundle.getStringArrayList("suffixes");
    assert list != null;
    suffixes = new String[list.size()];
    list.toArray(suffixes);
    key = StringUtils.join(",", list);
}
 

@Override
public void onViewCreated(@NonNull View view, @Nullable Bundle savedInstanceState) {
    super.onViewCreated(view, savedInstanceState);

    mLlBackTop = findViewById(R.id.ll_back_top);
    mLlBackTop.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View v) {
            Fragment parentFragment = getParentFragment();
            if (parentFragment instanceof HealthFragment) {
                ((HealthFragment) parentFragment).scroll2theTop();
            }
        }
    });
}
 

public static void checkForStoragePermission(final Fragment fragment, final int code, @StringRes int description) {
    if (ContextCompat.checkSelfPermission(fragment.getActivity(), WRITE_EXTERNAL_STORAGE) != PackageManager.PERMISSION_GRANTED) {
        new AlertDialog.Builder(fragment.getActivity())
                .setMessage(description)
                .setPositiveButton(android.R.string.ok, (dialog, which) -> fragment.requestPermissions(new String[]{WRITE_EXTERNAL_STORAGE}, code))
                .setNegativeButton(android.R.string.cancel, null)
                .create().show();
    } else {
        fragment.onRequestPermissionsResult(code, new String[]{WRITE_EXTERNAL_STORAGE}, new int[]{PackageManager.PERMISSION_GRANTED});
    }
}
 

public static Fragment newInstance(String pubKey) {
    WelcomeFragment fragment = new WelcomeFragment();
    Bundle bundle = new Bundle();
    bundle.putString(MainActivity.PUBLISHABLE_KEY, pubKey);
    fragment.setArguments(bundle);
    return fragment;
}
 

public static void addFragmentToStack(FragmentManager fm, Fragment fragment) {
    FragmentTransaction ft = fm.beginTransaction();
    ft.replace(R.id.fragment_container, fragment);
    ft.setTransition(FragmentTransaction.TRANSIT_FRAGMENT_OPEN);
    ft.addToBackStack(sStackName);
    ft.commit();
}
 

@Override
public Fragment getItem(int position) {

    switch (position) {
        case 0:
            return leftfrag;
        case 1:
            return midfrag;
        case 2:
            return rightfrag;
        default:
            return null;
    }
}
 

@Override
public Fragment getItem(int position) {
    BaseFragment fragment = null;

    String url = null;

    switch (position) {
        case 0:
            url = ConstantUtil.BASE_URL;
            break;

        case 1:
            url = ConstantUtil.LATEST_URL;
            break;

        case 2:
            url = ConstantUtil.ELITE_URL;
            break;

        case 3:
            url = ConstantUtil.FOLLOWS_URL;
            break;

        default:
            break;
    }

    if (!TextUtils.isEmpty(url)) {
        fragment = FragmentFactory.getFragmentByUrl(url);
        Bundle bundle = new Bundle();
        bundle.putString(BaseFragment.KEY_URL, url);
        bundle.putString(BaseFragment.KEY_TITLE, getPageTitle(position).toString());
        fragment.setArguments(bundle);
    }

    return fragment;
}
 

@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data)
{
  super.onActivityResult(requestCode, resultCode, data);
  Fragment fragment = getSupportFragmentManager().findFragmentById(android.R.id.content);
  fragment.onActivityResult(requestCode, resultCode, data);
}