It's possible using Google maps in Windows Phone 8? The question may seem strange, since the internet is very much a post about it. But in practice, I was faced with real problems.
The only way I know to use Google maps (with MapTileLayer.TileSources) is described in this article. But you can not replace the tiles in the new map control in WP 8. Of course we can use the old map contol plugging the appropriate library. This is where I have problems begin.
The old Bing Map control in WP8 has a memory leak, and using them is not possible. Perhaps more accurately, but over time will be a huge memory consumption. I do not know how to fix it. I wrote about it here and Microsoft Connect. In the end, I do not see a way to use the Google maps in own WP8 app. If someone successfully use Google maps in WP8 application, please help me.
Thanks in advance.
Even if you can use Google Maps tiles inside the control, you won't be authorize to do so.
Google Maps terms of use specify that you cannot direct access tiles or other resources out of the official control.
So technically it's possible but legally you cannot. So based on the terms of use, you can use the Google Maps control (JavaScript API) or use another mobile control (which won't be compatible with WP8).
There is an app in the WP Store, called gMaps, that uses Google Maps. Do you think that it's made with the JavaScript API?
来源：https://stackoverflow.com/questions/15927274/using-google-maps-in-windows-phone-8