向Google Map查询给定经纬度的位置信息,返回为JSON
+ (NSString *)googleReverseStringWithCoordinate:(CLLocationCoordinate2D)coordinate {
return [NSString stringWithFormat:@"http://maps.google.com/maps/geo?q=%lf,%lf&output=json&sensor=false&accuracy=4", coordinate.latitude,coordinate.longitude];
}