Package com.kernelcrew.moodapp.ui

Class LocationFragment

java.lang.Object

androidx.fragment.app.Fragment

com.kernelcrew.moodapp.ui.LocationFragment

All Implemented Interfaces:

ComponentCallbacks, View.OnCreateContextMenuListener, androidx.activity.result.ActivityResultCaller, androidx.lifecycle.HasDefaultViewModelProviderFactory, androidx.lifecycle.LifecycleOwner, androidx.lifecycle.ViewModelStoreOwner, androidx.savedstate.SavedStateRegistryOwner

public class LocationFragment
extends androidx.fragment.app.Fragment

Nested Class Summary

Nested classes/interfaces inherited from class androidx.fragment.app.Fragment

androidx.fragment.app.Fragment.InstantiationException, androidx.fragment.app.Fragment.SavedState

Field Summary

Fields inherited from class androidx.fragment.app.Fragment

mPreviousWho

Constructor Summary

Constructors

Constructor	Description
LocationFragment()

Method Summary

Modifier and Type	Method	Description
View	onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState)	Creates the fragment view and initializes location services.
void	onViewCreated(View view, Bundle savedInstanceState)	Called after this view has been created.
void	populateMapFromExistingLocation(double latitude, double longitude)	Populates the map with an existing location coordinate pair.
void	saveMoodEventWithoutLocation()	Saves a mood event without location data using a default message.
void	setLocation(Double lat, Double lon)
void	setUpdateListener(LocationUpdateListener form)	Listener for location updates.

Methods inherited from class androidx.fragment.app.Fragment

dump, equals, getActivity, getAllowEnterTransitionOverlap, getAllowReturnTransitionOverlap, getArguments, getChildFragmentManager, getContext, getDefaultViewModelCreationExtras, getDefaultViewModelProviderFactory, getEnterTransition, getExitTransition, getFragmentManager, getHost, getId, getLayoutInflater, getLayoutInflater, getLifecycle, getLoaderManager, getParentFragment, getParentFragmentManager, getReenterTransition, getResources, getRetainInstance, getReturnTransition, getSavedStateRegistry, getSharedElementEnterTransition, getSharedElementReturnTransition, getString, getString, getTag, getTargetFragment, getTargetRequestCode, getText, getUserVisibleHint, getView, getViewLifecycleOwner, getViewLifecycleOwnerLiveData, getViewModelStore, hashCode, hasOptionsMenu, instantiate, instantiate, isAdded, isDetached, isHidden, isInLayout, isMenuVisible, isRemoving, isResumed, isStateSaved, isVisible, onActivityCreated, onActivityResult, onAttach, onAttach, onAttachFragment, onConfigurationChanged, onContextItemSelected, onCreate, onCreateAnimation, onCreateAnimator, onCreateContextMenu, onCreateOptionsMenu, onDestroy, onDestroyOptionsMenu, onDestroyView, onDetach, onGetLayoutInflater, onHiddenChanged, onInflate, onInflate, onLowMemory, onMultiWindowModeChanged, onOptionsItemSelected, onOptionsMenuClosed, onPause, onPictureInPictureModeChanged, onPrepareOptionsMenu, onPrimaryNavigationFragmentChanged, onRequestPermissionsResult, onResume, onSaveInstanceState, onStart, onStop, onViewStateRestored, postponeEnterTransition, postponeEnterTransition, registerForActivityResult, registerForActivityResult, registerForContextMenu, requestPermissions, requireActivity, requireArguments, requireContext, requireFragmentManager, requireHost, requireParentFragment, requireView, setAllowEnterTransitionOverlap, setAllowReturnTransitionOverlap, setArguments, setEnterSharedElementCallback, setEnterTransition, setExitSharedElementCallback, setExitTransition, setHasOptionsMenu, setInitialSavedState, setMenuVisibility, setReenterTransition, setRetainInstance, setReturnTransition, setSharedElementEnterTransition, setSharedElementReturnTransition, setTargetFragment, setUserVisibleHint, shouldShowRequestPermissionRationale, startActivity, startActivity, startActivityForResult, startActivityForResult, startIntentSenderForResult, startPostponedEnterTransition, toString, unregisterForContextMenu

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Constructor Details

LocationFragment

public LocationFragment()

Method Details

onCreateView

@Nullable
public View onCreateView(@NonNull
 LayoutInflater inflater,
 @Nullable
 ViewGroup container,
 @Nullable
 Bundle savedInstanceState)

Creates the fragment view and initializes location services. Sets up the location button and location client.

Overrides:

onCreateView in class androidx.fragment.app.Fragment

Parameters:

inflater - The LayoutInflater to inflate views

container - The parent view container

savedInstanceState - Previously saved state

Returns:

The inflated and configured fragment view

onViewCreated

public void onViewCreated(@NonNull
 View view,
 @Nullable
 Bundle savedInstanceState)

Called after this view has been created. Initializes the permission request launcher. We do this here since the map should be initialized first.

Overrides:

onViewCreated in class androidx.fragment.app.Fragment

Parameters:

view - The view that was created

savedInstanceState - State bundle provided by the fragment manager

saveMoodEventWithoutLocation

public void saveMoodEventWithoutLocation()

Saves a mood event without location data using a default message.

setUpdateListener

public void setUpdateListener(LocationUpdateListener form)

Listener for location updates.

setLocation

public void setLocation(Double lat,
 Double lon)

populateMapFromExistingLocation

public void populateMapFromExistingLocation(double latitude,
 double longitude)

Populates the map with an existing location coordinate pair. This method is used when editing a mood event that already has location data, or when restoring a previously saved location. The method performs the following actions:

• Updates the internal latitude and longitude properties
• Shows the map card and hides the add location button
• Shows the remove location button
• Initializes the map with a marker at the specified coordinates
• Sets up a click listener to allow the user to change the location by tapping elsewhere on the map

Note that this method uses getView() which may return null if the fragment is not attached to its activity. Callers should ensure the fragment is in the proper lifecycle state before calling this method.

Parameters:

latitude - The latitude coordinate to display on the map

longitude - The longitude coordinate to display on the map

Throws:

NullPointerException - if getView() returns null or if map initialization fails

IllegalStateException - if the fragment is not attached to an activity