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迁移至地点自动补全（新）

Places SDK for iOS 支持现有的地点自动补全。如果您熟悉地点自动补全 - 新版地点自动补全进行以下更改：

使用新的价格模式。如需了解所有 API 的价格信息，请参阅 Places SDK for iOS（新）的价格。
要发出请求，请调用新的 GMSPlacesClient fetchAutocompleteSuggestionsFromRequest: 方法。
传递给请求：
- 新的 GMSAutocompleteRequest 类，用于定义所有请求参数，例如查询和会话令牌
- 类型的回调 GMSAutocompleteSuggestionsCallback 处理响应。
通过 GMSAutocompleteFilter 类现在可让您：
- 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。
响应由新的 GMSAutocompleteSuggestion 类。此类包含新类型的实例的数组 GMSAutocompletePlaceSuggestion 表示建议的参数。
该会话现在会调用地点详情（新）或地址验证。对于请参阅自动补全（新）和会话定价。

示例请求

利用“地点自动补全（新）”功能，您只需发出请求并传递 GMSAutocompleteRequest 实例中的所有参数：

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.
      }
    }
  }];