Iat 381 Week 12

Front 1

what can you do with google maps?

Back 1

- core feature: display a map

- current location

- location of landmarks

- detail info on locations

- draw various graphics

- interactive features

Front 2

why does the map always appear centred around a certain location?

Back 2

intersection of equator and prime meridian because it goes to default double values, lat 0.0 and long 0.0

Front 3

how do you get a reference to map object?

Back 3

initMap()

- findFragmentByID the map

Front 4

how to start from location of our choice with the XML way?

Back 4

in the fragment tag (map):

xmlns:map = "link" (new name space)

map:cameraTargetLat = "1"

map:cameraTargetLng = "1"

map:cameraZoom = "15"

Front 5

how to start from location of our choice with the Java way? example of the method code?

Back 5

add constants for lat and lng in code e.g.

public static final double VANCOUVER_LAT = 48.2398

have method:

gotoLocation(double lat, double lng) {

LatLng latlng = new LatLng(lat, lng);

CameraUpdate update =

CameraUpdateFactory.newLatLng(latlng);

mMap.moveCamera(update);

}

Front 6

what can you do with geocoding? 2 things

Back 6

pass in lat and lng and get back matching location

pass in city name, postal code, or landmark and get back lat and lng

Front 7

what are the geocoder methods?

Back 7

getFromLocation()

getFromLocationName()

Front 8

what do we implement to find the device's current location in code approach?

Back 8

Google API Client

Front 9

what is COARSE_LOCATION and FINE_LOCATION?

Back 9

coarse = based on proximity to cell phone towers and wireless networks

fine = GPS

Front 10

how to find the device's current location in non-code approach?

Back 10

displays a current location button

mMap.setMyLocationEnabled(true);

Front 11

what's the process of using google maps?

Back 11

1. get API key

2. add permissions to manifest

3. integrate google play services and add that to the manifest

4. check if google play services is available

5. create new layout file

6. setContentView to activity_map if services OK

Front 12

what 2 things do you need to add to the manifest for google maps?

Back 12

permissions

google play services

Front 13

what is the root element of a map?

Back 13

fragment

Front 14

what XML attributes do you use to set the camera in the map fragment?

Back 14

map:cameraTargetLat

map:cameraTargetLng

map:cameraZoom

Front 15

how to implement geocoding? explain the method and what's in it

Back 15

List<Address> list = myGeocoder.getFromLocation(the double lat lng)

list.get(0).getLocality , getLatitude, getLongitude

gotoLocation(getLatitude, getLongitude)

Front 16

steps to implement current location in code approach

Back 16

1. implement Google API Client

2. create Location client with the API client

3. showCurrentLocation method

Front 17

explain the showCurrentLocation method

Back 17

assign getLastLocation to currentLocation object

CameraUpdate (currentLocation.getLatitude, etc)

map.animateCamera(update)