Google Maps API Version Difference

Google Maps API Version difference

What's new in Google Map API v3?
Google Maps Directions API v3 for Android provide routes in the Encoded Polyline Algorithm Format.

What we must have to do?
We must have to decode this Polyline for showing exact Map

How we decode this encoded Polyline provided by Google Directions API v3?
Please Refer these three links to more clear with encoded Polyline returns from the Google Maps Directions API v3

Decoding polylines from google maps direction api with java
Encoding polylines for Google Maps
The encoding algorithm for the levels string

How we can resolve problem in above question?
Please refer these three answer links, that solves your problem :

Android - Draw route map between two geopoints
https://stackoverflow.com/a/10268114/1472665
https://stackoverflow.com/a/11357351/1494309

Google Maps API v2 vs Google Maps API v3?

I believe this answers everything:

http://www.youtube.com/v/zI8at1EmJjA

Choosing between Google Maps API v1 and v2

Will I be given opportunity to edit API key after March 3rd ?

if I create with v1 will it be working in froyo to Jelly Bean after March 3rd.

Yes

It's better to go with Google Maps Api V2 instead of V1, because no
new features will be added to Google Maps Android API v1. However,
apps using v1 will continue to work on devices.

Difference between Google Map Paid and non paid version

I believe the main difference is the number of hits per day. Your code should be totally portable.

A full list of differences is at http://www.google.com/enterprise/earthmaps/maps-compare.html

Difference between GMap2 and google.maps.Map

GMap2 is from previous version of google maps framework (version 2.x). Google has completely rewritten its maps javascript library, making it more lightweight and compatible with mobile devices. It's version 3.

If you are a beginner, start with version 3 (google.maps.Map)

Google map v2 or v3?

Hey, for Android Google maps API V2 is used and V3 is used for Websites and it can be used for HTML5 also, So you can Use maps API V2 for your android Application . check this link for more Information .

What is the difference between this two Google Maps Geocoding API URL?

The first URL is for v2 of the Geocoding API, the second is for v3.

is now deprecated
requires an API key
has (undocumented) support for JSONP

Which one to use depends (at least in part) on what environment you're going to use it in - if you want to use it in a webpage with JavaScript, you'll have to use v2 since it has JSONP support (unless you want to add a server-side component to get around cross-domain issues). An alternative for JavaScript is the JavaScript API Geocoder service.
If you're using the API in a desktop app or on the server-side, you can use either but v3 would be recommended.
v3 also has a higher query limit (2500 requests per day) as compared to v2 (1500 requests per day)

Google Maps API Version Difference