Java tutorial
/* * This is the source code of Telegram for Android v. 1.3.2. * It is licensed under GNU GPL v. 2 or later. * You should have received a copy of the license in this archive (see LICENSE). * * Copyright Nikolai Kudashov, 2013. */ package org.telegram.ui; import android.location.Location; import android.os.Bundle; import android.support.v4.internal.view.SupportMenuItem; import android.support.v7.app.ActionBar; import android.view.LayoutInflater; import android.view.Menu; import android.view.MenuInflater; import android.view.MenuItem; import android.view.View; import android.view.ViewGroup; import android.widget.TextView; import com.google.android.gms.maps.CameraUpdate; import com.google.android.gms.maps.CameraUpdateFactory; import com.google.android.gms.maps.GoogleMap; import com.google.android.gms.maps.SupportMapFragment; import com.google.android.gms.maps.model.BitmapDescriptorFactory; import com.google.android.gms.maps.model.LatLng; import com.google.android.gms.maps.model.Marker; import com.google.android.gms.maps.model.MarkerOptions; import org.telegram.messenger.LocaleController; import org.telegram.messenger.TLRPC; import org.telegram.objects.MessageObject; import org.telegram.messenger.MessagesController; import org.telegram.messenger.NotificationCenter; import org.telegram.messenger.R; import org.telegram.messenger.Utilities; import org.telegram.ui.Views.BackupImageView; import org.telegram.ui.Views.BaseFragment; public class LocationActivity extends BaseFragment implements NotificationCenter.NotificationCenterDelegate { private GoogleMap googleMap; private TextView distanceTextView; private Marker userMarker; private Location myLocation; private Location userLocation; private MessageObject messageObject; private BackupImageView avatarImageView; private TextView nameTextView; private View bottomView; private TextView sendButton; private boolean userLocationMoved = false; private boolean firstWas = false; private final static int map_to_my_location = 1; private final static int map_list_menu_map = 2; private final static int map_list_menu_satellite = 3; private final static int map_list_menu_hybrid = 4; public SupportMapFragment mapFragment = new SupportMapFragment() { @Override public void onActivityCreated(Bundle savedInstanceState) { super.onActivityCreated(savedInstanceState); googleMap = getMap(); if (googleMap == null) { return; } googleMap.setMyLocationEnabled(true); googleMap.getUiSettings().setMyLocationButtonEnabled(false); googleMap.getUiSettings().setZoomControlsEnabled(false); googleMap.getUiSettings().setCompassEnabled(false); googleMap.setOnMyLocationChangeListener(new GoogleMap.OnMyLocationChangeListener() { @Override public void onMyLocationChange(Location location) { positionMarker(location); } }); myLocation = googleMap.getMyLocation(); if (sendButton != null) { userLocation = new Location("network"); userLocation.setLatitude(20.659322); userLocation.setLongitude(-11.406250); LatLng latLng = new LatLng(20.659322, -11.406250); userMarker = googleMap.addMarker(new MarkerOptions().position(latLng) .icon(BitmapDescriptorFactory.fromResource(R.drawable.map_pin)).draggable(true)); sendButton.setOnClickListener(new View.OnClickListener() { @Override public void onClick(View view) { NotificationCenter.getInstance().postNotificationName(997, userLocation.getLatitude(), userLocation.getLongitude()); finishFragment(); } }); googleMap.setOnMarkerDragListener(new GoogleMap.OnMarkerDragListener() { @Override public void onMarkerDragStart(Marker marker) { } @Override public void onMarkerDrag(Marker marker) { userLocationMoved = true; } @Override public void onMarkerDragEnd(Marker marker) { LatLng latLng = marker.getPosition(); userLocation.setLatitude(latLng.latitude); userLocation.setLongitude(latLng.longitude); } }); } if (bottomView != null) { bottomView.setOnClickListener(new View.OnClickListener() { @Override public void onClick(View view) { if (userLocation != null) { LatLng latLng = new LatLng(userLocation.getLatitude(), userLocation.getLongitude()); CameraUpdate position = CameraUpdateFactory.newLatLngZoom(latLng, googleMap.getMaxZoomLevel() - 8); googleMap.animateCamera(position); } } }); } if (messageObject != null) { int fromId = messageObject.messageOwner.from_id; if (messageObject.messageOwner instanceof TLRPC.TL_messageForwarded) { fromId = messageObject.messageOwner.fwd_from_id; } TLRPC.User user = MessagesController.getInstance().users.get(fromId); if (user != null) { avatarImageView.setImage(user.photo.photo_small, "50_50", Utilities.getUserAvatarForId(user.id)); nameTextView.setText(Utilities.formatName(user.first_name, user.last_name)); } userLocation = new Location("network"); userLocation.setLatitude(messageObject.messageOwner.media.geo.lat); userLocation.setLongitude(messageObject.messageOwner.media.geo._long); LatLng latLng = new LatLng(userLocation.getLatitude(), userLocation.getLongitude()); userMarker = googleMap.addMarker(new MarkerOptions().position(latLng) .icon(BitmapDescriptorFactory.fromResource(R.drawable.map_pin))); CameraUpdate position = CameraUpdateFactory.newLatLngZoom(latLng, googleMap.getMaxZoomLevel() - 8); googleMap.moveCamera(position); } positionMarker(myLocation); ViewGroup topLayout = (ViewGroup) parentActivity.findViewById(R.id.container); topLayout.requestTransparentRegion(topLayout); } }; @Override public boolean onFragmentCreate() { super.onFragmentCreate(); messageObject = (MessageObject) NotificationCenter.getInstance().getFromMemCache(0); NotificationCenter.getInstance().addObserver(this, MessagesController.closeChats); if (messageObject != null) { NotificationCenter.getInstance().addObserver(this, MessagesController.updateInterfaces); } return true; } @Override public void onFragmentDestroy() { super.onFragmentDestroy(); NotificationCenter.getInstance().removeObserver(this, MessagesController.updateInterfaces); NotificationCenter.getInstance().removeObserver(this, MessagesController.closeChats); } @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setHasOptionsMenu(true); } @Override public void applySelfActionBar() { if (parentActivity == null) { return; } ActionBar actionBar = parentActivity.getSupportActionBar(); actionBar.setDisplayShowTitleEnabled(true); actionBar.setDisplayShowHomeEnabled(false); actionBar.setDisplayHomeAsUpEnabled(true); actionBar.setDisplayUseLogoEnabled(false); actionBar.setSubtitle(null); actionBar.setDisplayShowCustomEnabled(false); actionBar.setCustomView(null); if (messageObject != null) { actionBar.setTitle(LocaleController.getString("ChatLocation", R.string.ChatLocation)); } else { actionBar.setTitle(LocaleController.getString("ShareLocation", R.string.ShareLocation)); } TextView title = (TextView) parentActivity.findViewById(R.id.action_bar_title); if (title == null) { final int subtitleId = parentActivity.getResources().getIdentifier("action_bar_title", "id", "android"); title = (TextView) parentActivity.findViewById(subtitleId); } if (title != null) { title.setCompoundDrawablesWithIntrinsicBounds(0, 0, 0, 0); title.setCompoundDrawablePadding(0); } } @Override public void onResume() { super.onResume(); if (getActivity() == null) { return; } ((LaunchActivity) parentActivity).showActionBar(); ((LaunchActivity) parentActivity).updateActionBar(); } @Override public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) { if (fragmentView == null) { if (messageObject != null) { fragmentView = inflater.inflate(R.layout.location_view_layout, container, false); } else { fragmentView = inflater.inflate(R.layout.location_attach_layout, container, false); } avatarImageView = (BackupImageView) fragmentView.findViewById(R.id.location_avatar_view); nameTextView = (TextView) fragmentView.findViewById(R.id.location_name_label); distanceTextView = (TextView) fragmentView.findViewById(R.id.location_distance_label); bottomView = fragmentView.findViewById(R.id.location_bottom_view); sendButton = (TextView) fragmentView.findViewById(R.id.location_send_button); if (sendButton != null) { sendButton.setText(LocaleController.getString("SendLocation", R.string.SendLocation)); } getChildFragmentManager().beginTransaction().replace(R.id.map_view, mapFragment).commit(); } else { ViewGroup parent = (ViewGroup) fragmentView.getParent(); if (parent != null) { parent.removeView(fragmentView); } } return fragmentView; } private void updateUserData() { if (messageObject != null && avatarImageView != null) { int fromId = messageObject.messageOwner.from_id; if (messageObject.messageOwner instanceof TLRPC.TL_messageForwarded) { fromId = messageObject.messageOwner.fwd_from_id; } TLRPC.User user = MessagesController.getInstance().users.get(fromId); if (user != null) { TLRPC.FileLocation photo = null; if (user.photo != null) { photo = user.photo.photo_small; } avatarImageView.setImage(photo, null, Utilities.getUserAvatarForId(user.id)); nameTextView.setText(Utilities.formatName(user.first_name, user.last_name)); } } } @Override public void onCreateOptionsMenu(Menu menu, MenuInflater inflater) { SupportMenuItem item = (SupportMenuItem) menu .add(Menu.NONE, map_to_my_location, Menu.NONE, LocaleController.getString("MyLocation", R.string.MyLocation)) .setIcon(R.drawable.ic_ab_location); item.setShowAsAction(SupportMenuItem.SHOW_AS_ACTION_ALWAYS); menu.add(Menu.NONE, map_list_menu_map, Menu.NONE, LocaleController.getString("Map", R.string.Map)); menu.add(Menu.NONE, map_list_menu_satellite, Menu.NONE, LocaleController.getString("Satellite", R.string.Satellite)); menu.add(Menu.NONE, map_list_menu_hybrid, Menu.NONE, LocaleController.getString("Hybrid", R.string.Hybrid)); } @Override public boolean onOptionsItemSelected(MenuItem item) { int itemId = item.getItemId(); switch (itemId) { case map_list_menu_map: if (googleMap != null) { googleMap.setMapType(GoogleMap.MAP_TYPE_NORMAL); } break; case map_list_menu_satellite: if (googleMap != null) { googleMap.setMapType(GoogleMap.MAP_TYPE_SATELLITE); } break; case map_list_menu_hybrid: if (googleMap != null) { googleMap.setMapType(GoogleMap.MAP_TYPE_HYBRID); } break; case map_to_my_location: if (myLocation != null) { LatLng latLng = new LatLng(myLocation.getLatitude(), myLocation.getLongitude()); if (googleMap != null) { CameraUpdate position = CameraUpdateFactory.newLatLngZoom(latLng, googleMap.getMaxZoomLevel() - 8); googleMap.animateCamera(position); } } break; case android.R.id.home: finishFragment(); break; } return true; } private void positionMarker(Location location) { if (location == null) { return; } myLocation = location; if (messageObject != null) { if (userLocation != null && distanceTextView != null) { float distance = location.distanceTo(userLocation); if (distance < 1000) { distanceTextView.setText(String.format("%d %s", (int) (distance), LocaleController.getString("MetersAway", R.string.MetersAway))); } else { distanceTextView.setText(String.format("%.2f %s", distance / 1000.0f, LocaleController.getString("KMetersAway", R.string.KMetersAway))); } } } else { if (!userLocationMoved && googleMap != null) { userLocation = location; LatLng latLng = new LatLng(location.getLatitude(), location.getLongitude()); userMarker.setPosition(latLng); if (firstWas) { CameraUpdate position = CameraUpdateFactory.newLatLng(latLng); googleMap.animateCamera(position); } else { firstWas = true; CameraUpdate position = CameraUpdateFactory.newLatLngZoom(latLng, googleMap.getMaxZoomLevel() - 8); googleMap.moveCamera(position); } } } } @Override public void didReceivedNotification(int id, Object... args) { if (id == MessagesController.updateInterfaces) { int mask = (Integer) args[0]; if ((mask & MessagesController.UPDATE_MASK_AVATAR) != 0 || (mask & MessagesController.UPDATE_MASK_NAME) != 0) { updateUserData(); } } else if (id == MessagesController.closeChats) { removeSelfFromStack(); } } }