Places SDK for iOS 支持地点自动补全（旧版）。如果您熟悉地点自动补全（旧版），那么地点自动补全（新）会做出以下更改：
采用新的价格模式。如需了解所有 API 的价格信息，请参阅 Places SDK for iOS（新）的价格。
如需发出请求，请调用新的
GMSPlacesClient fetchAutocompleteSuggestionsFromRequest:方法。传递给请求：
一个新
GMSAutocompleteRequest类的实例，用于定义所有请求参数，例如查询和会话令牌。用于处理响应的回调，类型为
GMSAutocompleteSuggestionsCallback。
现在，借助
GMSAutocompleteFilter类，您可以：- 设置用于确定结果格式的区域代码。
- 设置预测偏移量，即查询的从零开始的 Unicode 字符偏移量。
响应由新的
GMSAutocompleteSuggestion类定义。此类包含一个新类型GMSAutocompletePlaceSuggestion的实例数组，用于表示建议。会话现在以调用地点详情（新）或地址验证结束。如需了解详情，请参阅自动补全（新）和会话价格。
示例请求
使用“地点自动补全（新）”时，您需要发出请求并在 GMSAutocompleteRequest 实例中传递所有参数：
Swift
let token = GMSAutocompleteSessionToken()
let northEastBounds = CLLocationCoordinate2DMake(37.38816277477739, -122.08813770258874)
let southWestBounds = CLLocationCoordinate2DMake(37.39580487866437, -122.07702325966572)
let filter = GMSAutocompleteFilter()
filter.types = [kGMSPlaceTypeRestaurant]
filter.locationBias = GMSPlaceRectangularLocationOption(northEastBounds, southWestBounds)
let request = GMSAutocompleteRequest(query:"Sicilian piz")
request.filter = filter
request.sessionToken = token
GMSPlacesClient.shared().fetchAutocompleteSuggestions(from: request, callback: { results, error in
// Handle response
})
Objective-C
CLLocationCoordinate2D northEast = CLLocationCoordinate2DMake(37.38816277477739, -122.08813770258874);
CLLocationCoordinate2D southWest = CLLocationCoordinate2DMake(37.39580487866437, -122.07702325966572);
GMSAutocompleteFilter *filter = [[GMSAutocompleteFilter alloc] init];
filter.types = @[ kGMSPlaceTypeRestaurant ];
filter.locationBias = GMSPlaceRectangularLocationOption(northEast, southWest);
GMSAutocompleteRequest *request = [[GMSAutocompleteRequest alloc] initWithQuery:@"Sicilian piz"];
request.sessionToken = token;
request.filter = filter;
[[GMSPlacesClient sharedClient] fetchAutocompleteSuggestionsFromRequest:request callback:^(NSArray<GMSAutocompleteSuggestion *> * results, NSError * error){
// Handle response
for (GMSAutocompleteSuggestion *suggestion in results) {
if (suggestion.placeSuggestion) {
// Show place suggestion data.
}
}
}];