问题
I'm trying to make an Android application that displays a map of a Park and when a user taps on a certain location on the map, the application goes to another screen.
Problem is that currently my map of the park is in a .jpg format. Which mapping API is best for my application and how would I go about converting this .jpg map into a format that is accepted by the API.
Thanks!
回答1:
Adding an overlay for Google maps with a custom map is pretty easy to do, the sample code works out of the box.
To overlay the map you need to have a rough idea of the gps coordinates of the park. There is the sample code for overlays using a jpg is here: https://code.google.com/p/android-maps-extensions/source/browse/google-play-services-samples/src/com/example/mapdemo/GroundOverlayDemoActivity.java?r=fd7175206a82da6d87b773e968d52849b4c107fb
Clone the entire project and import it into Eclipse:
git clone https://code.google.com/p/android-maps-extensions/
After you have it running and installed on your device, you will want to get an API key here: https://code.google.com/apis/console
Full instructions are here if you get stuck: https://developers.google.com/maps/documentation/android/start
There are other demos to make your map more useful for example:
- traffic info to get to the event/park
- a 3D perspective if you want for eye candy
- GPS of users current location with relation to the park
- make the overlay opaque, or slightly transparent
- custom markers so the user can tap and open another screen
回答2:
Well, you can use the google maps api v2 in android, and you create an Overlay map and implement the getTile, here you can find more info:
https://developers.google.com/maps/documentation/android/reference/com/google/android/gms/maps/model/TileProvider
but the only thing is, change the properties in order that the maps ask for the tile you want to send, lest say that you have 4 tiles for your map, so use a zoom level that only allows 4 tiles to be delivered and then you return the corresponding tile to the map.
also you have to set the type map to NONE.
来源：https://stackoverflow.com/questions/19798797/how-to-display-a-custom-map-on-android