据我所知，唯一的方法是使用标准Google搜索的KML输出格式：

http://maps.google.com.au/maps?f=q&source=s_q&hl=zh-TW&geocode= &安培; q =意大利％20类别：restaurants& sll = -37.816518,144.890628& sspn = 0.007247,0.012424& ie = UTF8& z = 12& output = kml

Im trying to create a "search nearby" shops on iphone, but i can not find any solution on how to get the data from Gdata Libraries.

http://code.google.com/p/gdata-objectivec-client/

They only support the following Google services provides a Google data API, but not google maps?!

Google Base Blogger Book Search Calendar Code Search Contacts Documents List Finance Health Picasa Web Albums Spreadsheets Webmaster Tools ***

Any solution or idea where i should look for would be much appreciated.

As far as I know, the only way to do this is to use the KML output format from a standard Google search:

http://maps.google.com.au/maps?f=q&source=s_q&hl=en&geocode=&q=italian%20category:restaurants&sll=-37.816518,144.890628&sspn=0.007247,0.012424&ie=UTF8&z=12&output=kml

Although you should check Google's terms and conditions to see if you're allowed to use that as an API.