如何在Android中使用Google Direction API

Question

At first really sorry for asking a stupid question. Is it necessary to generate API key to use Google Direction API in my Android Application. How to generate Google Direction API key? Link of any documentation is preferred. Thanks in advance.

Answer 1

Firstly There is no such thing in this world as a stupid question.

Secondly go through this documentation you will find what you need

EDIT VERSION : Follow these steps.

open this link

1. Create a test project. 2.click API&auth on left menu
   3.click credential 4.Create new key on the public API access section . Then create a key.

or esle use this key which i just generated for a sample project.

AIzaSyDZOj1QSw4MM4RzPdUEeNTLEhlntcyfMqw

Answer 2

Using an API key has the following effect:

• Enables per-key instead of per-IP-address quota limits.

This means, the usage of the api on all devices your app is installed on, is summed together.

If you do not use the API key, the usage is per IP-address. So the limits of the API apply per device.

On a server you have to ability to cache (or use other techniques) to minimize calls. But on a device (IMHO) this ability is limited.

In my apps, I use the Direction API without API-key, so I do not bump into usage limits.

BTW: you can get an API key using the Google Developers Console .