新一代 Places API 隨著 Places API (新版) 的推出而提供。

本頁面由 Cloud Translation API 翻譯而成。

Place Autocomplete

選取平台： Android iOS JavaScript 網頁服務

注意：伺服器端和用戶端程式庫

Places API 也適用於 Google 地圖服務適用的 Java 用戶端、Python 用戶端、Go 用戶端和 Node.js 用戶端。Places API 和用戶端程式庫適用於伺服器應用程式。

如果您要建構用戶端應用程式，請參閱 Places SDK for Android、Places SDK for iOS 和 Places Library、Maps JavaScript API。

Place Autocomplete 服務是一種網路服務，可根據 HTTP 要求傳回地點預測結果。這項要求會指定文字搜尋字串和選用的地理範圍。這項服務可用於為文字地理搜尋提供自動完成功能，藉此傳回商家、地址和搜尋點等地點，並以使用者類型呈現。

Place Autocomplete 要求

Place Autocomplete 服務是 Places API 的一部分，並與 Places API 共用 API 金鑰和配額。

Place Autocomplete 服務可比對完整字詞和子字串，解析地點名稱、地址和 Plus Codes。因此，應用程式可在使用者輸入內容時傳送查詢，即時提供地點預測結果。

請務必正確設定加號代碼。也就是說，您必須將加號轉換為 %2B，並將空格轉換為 %20。

全球代碼是四個半形字元的區碼，加上六個半形字元以上的地區代碼。例如，網址轉義全域代碼 849VCWC8+R9 為 849VCWC8%2BR9。
複合代碼是六個半形字元以上的當地代碼，加上明確的位置。例如，網址逃逸組合程式碼 CWC8+R9 Mountain View, CA, USA 為 CWC8%2BR9%20Mountain%20View%20CA%20USA。

系統會將傳回的預測結果呈現給使用者，協助他們選擇所需地點。您可以傳送 Place Details 要求，進一步瞭解傳回的任何地點。

「地方資訊自動完成」要求是採用下列格式的 HTTP 網址：

https://maps.googleapis.com/maps/api/place/autocomplete/output?parameters

其中 output 可以是下列任一值：

json (建議) 表示以 JavaScript Object Notation (JSON) 格式輸出
xml 表示輸出內容為 XML

您必須提供特定參數，才能啟動 Place Autocomplete 要求。依照網址標準，所有參數都會以 & 字元分隔。以下列出參數清單和可能的值。

Required parameters

input
The text string on which to search. The Place Autocomplete service will return candidate matches based on this string and order results based on their perceived relevance.

Optional parameters

components
A grouping of places to which you would like to restrict your results. Currently, you can use components to filter by up to 5 countries. Countries must be passed as a two character, ISO 3166-1 Alpha-2 compatible country code. For example: components=country:fr would restrict your results to places within France. Multiple countries must be passed as multiple country:XX filters, with the pipe character | as a separator. For example: components=country:us|country:pr|country:vi|country:gu|country:mp would restrict your results to places within the United States and its unincorporated organized territories.
Note: If you receive unexpected results with a country code, verify that you are using a code which includes the countries, dependent territories, and special areas of geographical interest you intend. You can find code information at Wikipedia: List of ISO 3166 country codes or the ISO Online Browsing Platform.
language
The language in which to return results.
- See the list of supported languages. Google often updates the supported languages, so this list may not be exhaustive.
- If language is not supplied, the API attempts to use the preferred language as specified in the Accept-Language header.
- The API does its best to provide a street address that is readable for both the user and locals. To achieve that goal, it returns street addresses in the local language, transliterated to a script readable by the user if necessary, observing the preferred language. All other addresses are returned in the preferred language. Address components are all returned in the same language, which is chosen from the first component.
- If a name is not available in the preferred language, the API uses the closest match.
- The preferred language has a small influence on the set of results that the API chooses to return, and the order in which they are returned. The geocoder interprets abbreviations differently depending on language, such as the abbreviations for street types, or synonyms that may be valid in one language but not in another. For example, utca and tér are synonyms for street in Hungarian.
location
The point around which to retrieve place information. This must be specified as latitude,longitude. The radius parameter must also be provided when specifying a location. If radius is not provided, the location parameter is ignored.
When using the Text Search API, the `location` parameter may be overriden if the `query` contains an explicit location such as `Market in Barcelona`.
locationbias
Prefer results in a specified area, by specifying either a radius plus lat/lng, or two lat/lng pairs representing the points of a rectangle. If this parameter is not specified, the API uses IP address biasing by default.
- IP bias: Instructs the API to use IP address biasing. Pass the string ipbias (this option has no additional parameters).
- Circular: A string specifying radius in meters, plus lat/lng in decimal degrees. Use the following format: circle:radius@lat,lng.
- Rectangular: A string specifying two lat/lng pairs in decimal degrees, representing the south/west and north/east points of a rectangle. Use the following format:rectangle:south,west|north,east. Note that east/west values are wrapped to the range -180, 180, and north/south values are clamped to the range -90, 90.
locationrestriction
Restrict results to a specified area, by specifying either a radius plus lat/lng, or two lat/lng pairs representing the points of a rectangle.
- Circular: A string specifying radius in meters, plus lat/lng in decimal degrees. Use the following format: circle:radius@lat,lng.
- Rectangular: A string specifying two lat/lng pairs in decimal degrees, representing the south/west and north/east points of a rectangle. Use the following format:rectangle:south,west|north,east. Note that east/west values are wrapped to the range -180, 180, and north/south values are clamped to the range -90, 90.
offset
The position, in the input term, of the last character that the service uses to match predictions. For example, if the input is Google and the offset is 3, the service will match on Goo. The string determined by the offset is matched against the first word in the input term only. For example, if the input term is Google abc and the offset is 3, the service will attempt to match against Goo abc. If no offset is supplied, the service will use the whole term. The offset should generally be set to the position of the text caret.
origin
The origin point from which to calculate straight-line distance to the destination (returned as distance_meters). If this value is omitted, straight-line distance will not be returned. Must be specified as latitude,longitude.
radius
Defines the distance (in meters) within which to return place results. You may bias results to a specified circle by passing a location and a radius parameter. Doing so instructs the Places service to prefer showing results within that circle; results outside of the defined area may still be displayed.
The radius will automatically be clamped to a maximum value depending on the type of search and other parameters.
- Autocomplete: 50,000 meters
- Nearby Search:
  - with keyword or name: 50,000 meters
  - without keyword or name
    - Up to 50,000 meters, adjusted dynamically based on area density, independent of rankby parameter.
    - When using rankby=distance, the radius parameter will not be accepted, and will result in an INVALID_REQUEST.
- Query Autocomplete: 50,000 meters
- Text Search: 50,000 meters
region
The region code, specified as a ccTLD ("top-level domain") two-character value. Most ccTLD codes are identical to ISO 3166-1 codes, with some notable exceptions. For example, the United Kingdom's ccTLD is "uk" (.co.uk) while its ISO 3166-1 code is "gb" (technically for the entity of "The United Kingdom of Great Britain and Northern Ireland").
sessiontoken
A random string which identifies an autocomplete session for billing purposes.
The session begins when the user starts typing a query, and concludes when they select a place and a call to Place Details is made. Each session can have multiple queries, followed by one place selection. The API key(s) used for each request within a session must belong to the same Google Cloud Console project. Once a session has concluded, the token is no longer valid; your app must generate a fresh token for each session. If the sessiontoken parameter is omitted, or if you reuse a session token, the session is charged as if no session token was provided (each request is billed separately).
We recommend the following guidelines:
- Use session tokens for all autocomplete sessions.
- Generate a fresh token for each session. Using a version 4 UUID is recommended.
- Ensure that the API key(s) used for all Place Autocomplete and Place Details requests within a session belong to the same Cloud Console project.
- Be sure to pass a unique session token for each new session. Using the same token for more than one session will result in each request being billed individually.
strictbounds
Returns only those places that are strictly within the region defined by location and radius. This is a restriction, rather than a bias, meaning that results outside this region will not be returned even if they match the user input.
types
You can restrict results from a Place Autocomplete request to be of a certain type by passing the types parameter. This parameter specifies a type or a type collection, as listed in Place Types. If nothing is specified, all types are returned.
A place can only have a single primary type from types listed in Table 1 or Table 2. For example, a hotel where food is served may by returned only with types=lodging and not with types=restaurant.
For the value of the types parameter you can specify either:
- Up to five values from Table 1 or Table 2. For multiple values, separate each value with a | (vertical bar). For example:
  types=book_store|cafe
- Any single supported filter in Table 3. You cannot mix type collections.
Note: Although geocode and establishment are part of Table 2, they cannot be combined with any other type in Tables 1, 2, or 3 in Place Autocomplete request filters.
The request will be rejected with an INVALID_REQUEST error if:
- More than five types are specified.
- Any unrecognized types are present.
- Any types from in Table 1 or Table 2 are mixed with any of the filters in Table 3.
Note: The types parameter only works on the primary type of the place, not all types associated with the place. Although every place has a primary type, not every primary type is supported by Places API (New). Supported types include those listed in Table 1 or Table 2.

Place Autocomplete 範例

以加州舊金山為中心的區域內，要求包含「Amoeba」字串的建築物：

網址

https://maps.googleapis.com/maps/api/place/autocomplete/json
  ?input=amoeba
  &location=37.76999%2C-122.44696
  &radius=500
  &types=establishment
  &key=YOUR_API_KEY

cURL

curl -L -X GET 'https://maps.googleapis.com/maps/api/place/autocomplete/json?input=amoeba&types=establishment&location=37.76999%2C-122.44696&radius=500&key=YOUR_API_KEY'

同樣的要求，但只限於舊金山 Ashbury St 和 Haight St 500 公尺範圍內的結果：

網址

https://maps.googleapis.com/maps/api/place/autocomplete/json
  ?input=amoeba
  &location=37.76999%2C-122.44696
  &radius=500
  &strictbounds=true
  &types=establishment
  &key=YOUR_API_KEY

cURL

curl -L -X GET 'https://maps.googleapis.com/maps/api/place/autocomplete/json?input=amoeba&types=establishment&location=37.76999%2C-122.44696&radius=500&strictbounds=true&key=YOUR_API_KEY'

以下則是針對在搜尋結果中含有 "Vict" (法文) 的地址發出的要求範例：

網址

https://maps.googleapis.com/maps/api/place/autocomplete/json
  ?input=Vict
  &language=fr
  &types=geocode
  &key=YOUR_API_KEY

cURL

curl -L -X GET 'https://maps.googleapis.com/maps/api/place/autocomplete/json?input=Vict&types=geocode&language=fr&key=YOUR_API_KEY'

要求搜尋包含「Vict」的城市，並以巴西葡萄牙文顯示結果：

網址

https://maps.googleapis.com/maps/api/place/autocomplete/json
  ?input=Vict
  &language=pt_BR
  &types=%28cities%29
  &key=YOUR_API_KEY

cURL

curl -L -X GET 'https://maps.googleapis.com/maps/api/place/autocomplete/json?input=Vict&types=(cities)&language=pt_BR&key=YOUR_API_KEY'

請注意，您需要將範例中的 API 金鑰替換成自己的金鑰。

Place Autocomplete 回應

地點自動完成回應會以要求網址路徑中 output 標記所指定的格式傳回。以下結果代表使用下列參數的查詢可能傳回的內容：

網址

https://maps.googleapis.com/maps/api/place/autocomplete/json
  ?input=Paris
  &types=geocode
  &key=YOUR_API_KEY

cURL

curl -L -X GET 'https://maps.googleapis.com/maps/api/place/autocomplete/json?input=Paris&types=geocode&key=YOUR_API_KEY'

JSON

{
  "predictions":
    [
      {
        "description": "Paris, France",
        "matched_substrings": [{ "length": 5, "offset": 0 }],
        "place_id": "ChIJD7fiBh9u5kcRYJSMaMOCCwQ",
        "reference": "ChIJD7fiBh9u5kcRYJSMaMOCCwQ",
        "structured_formatting":
          {
            "main_text": "Paris",
            "main_text_matched_substrings": [{ "length": 5, "offset": 0 }],
            "secondary_text": "France",
          },
        "terms":
          [
            { "offset": 0, "value": "Paris" },
            { "offset": 7, "value": "France" },
          ],
        "types": ["locality", "political", "geocode"],
      },
      {
        "description": "Paris, TX, USA",
        "matched_substrings": [{ "length": 5, "offset": 0 }],
        "place_id": "ChIJmysnFgZYSoYRSfPTL2YJuck",
        "reference": "ChIJmysnFgZYSoYRSfPTL2YJuck",
        "structured_formatting":
          {
            "main_text": "Paris",
            "main_text_matched_substrings": [{ "length": 5, "offset": 0 }],
            "secondary_text": "TX, USA",
          },
        "terms":
          [
            { "offset": 0, "value": "Paris" },
            { "offset": 7, "value": "TX" },
            { "offset": 11, "value": "USA" },
          ],
        "types": ["locality", "political", "geocode"],
      },
      {
        "description": "Paris, TN, USA",
        "matched_substrings": [{ "length": 5, "offset": 0 }],
        "place_id": "ChIJ4zHP-Sije4gRBDEsVxunOWg",
        "reference": "ChIJ4zHP-Sije4gRBDEsVxunOWg",
        "structured_formatting":
          {
            "main_text": "Paris",
            "main_text_matched_substrings": [{ "length": 5, "offset": 0 }],
            "secondary_text": "TN, USA",
          },
        "terms":
          [
            { "offset": 0, "value": "Paris" },
            { "offset": 7, "value": "TN" },
            { "offset": 11, "value": "USA" },
          ],
        "types": ["locality", "political", "geocode"],
      },
      {
        "description": "Paris, Brant, ON, Canada",
        "matched_substrings": [{ "length": 5, "offset": 0 }],
        "place_id": "ChIJsamfQbVtLIgR-X18G75Hyi0",
        "reference": "ChIJsamfQbVtLIgR-X18G75Hyi0",
        "structured_formatting":
          {
            "main_text": "Paris",
            "main_text_matched_substrings": [{ "length": 5, "offset": 0 }],
            "secondary_text": "Brant, ON, Canada",
          },
        "terms":
          [
            { "offset": 0, "value": "Paris" },
            { "offset": 7, "value": "Brant" },
            { "offset": 14, "value": "ON" },
            { "offset": 18, "value": "Canada" },
          ],
        "types": ["neighborhood", "political", "geocode"],
      },
      {
        "description": "Paris, KY, USA",
        "matched_substrings": [{ "length": 5, "offset": 0 }],
        "place_id": "ChIJsU7_xMfKQ4gReI89RJn0-RQ",
        "reference": "ChIJsU7_xMfKQ4gReI89RJn0-RQ",
        "structured_formatting":
          {
            "main_text": "Paris",
            "main_text_matched_substrings": [{ "length": 5, "offset": 0 }],
            "secondary_text": "KY, USA",
          },
        "terms":
          [
            { "offset": 0, "value": "Paris" },
            { "offset": 7, "value": "KY" },
            { "offset": 11, "value": "USA" },
          ],
        "types": ["locality", "political", "geocode"],
      },
    ],
  "status": "OK",
}

XML

<AutocompletionResponse>
 <status>OK</status>
 <prediction>
  <description>Paris, France</description>
  <type>locality</type>
  <type>political</type>
  <type>geocode</type>
  <reference>ChIJD7fiBh9u5kcRYJSMaMOCCwQ</reference>
  <term>
   <value>Paris</value>
   <offset>0</offset>
  </term>
  <term>
   <value>France</value>
   <offset>7</offset>
  </term>
  <matched_substring>
   <offset>0</offset>
   <length>5</length>
  </matched_substring>
  <place_id>ChIJD7fiBh9u5kcRYJSMaMOCCwQ</place_id>
  <structured_formatting>
   <description>Paris</description>
   <subdescription>France</subdescription>
   <description_matched_substring>
    <offset>0</offset>
    <length>5</length>
   </description_matched_substring>
  </structured_formatting>
 </prediction>
 <prediction>
  <description>Paris, TX, USA</description>
  <type>locality</type>
  <type>political</type>
  <type>geocode</type>
  <reference>ChIJmysnFgZYSoYRSfPTL2YJuck</reference>
  <term>
   <value>Paris</value>
   <offset>0</offset>
  </term>
  <term>
   <value>TX</value>
   <offset>7</offset>
  </term>
  <term>
   <value>USA</value>
   <offset>11</offset>
  </term>
  <matched_substring>
   <offset>0</offset>
   <length>5</length>
  </matched_substring>
  <place_id>ChIJmysnFgZYSoYRSfPTL2YJuck</place_id>
  <structured_formatting>
   <description>Paris</description>
   <subdescription>TX, USA</subdescription>
   <description_matched_substring>
    <offset>0</offset>
    <length>5</length>
   </description_matched_substring>
  </structured_formatting>
 </prediction>
 <prediction>
  <description>Paris, TN, USA</description>
  <type>locality</type>
  <type>political</type>
  <type>geocode</type>
  <reference>ChIJ4zHP-Sije4gRBDEsVxunOWg</reference>
  <term>
   <value>Paris</value>
   <offset>0</offset>
  </term>
  <term>
   <value>TN</value>
   <offset>7</offset>
  </term>
  <term>
   <value>USA</value>
   <offset>11</offset>
  </term>
  <matched_substring>
   <offset>0</offset>
   <length>5</length>
  </matched_substring>
  <place_id>ChIJ4zHP-Sije4gRBDEsVxunOWg</place_id>
  <structured_formatting>
   <description>Paris</description>
   <subdescription>TN, USA</subdescription>
   <description_matched_substring>
    <offset>0</offset>
    <length>5</length>
   </description_matched_substring>
  </structured_formatting>
 </prediction>
 <prediction>
  <description>Paris, Brant, ON, Canada</description>
  <type>neighborhood</type>
  <type>political</type>
  <type>geocode</type>
  <reference>ChIJsamfQbVtLIgR-X18G75Hyi0</reference>
  <term>
   <value>Paris</value>
   <offset>0</offset>
  </term>
  <term>
   <value>Brant</value>
   <offset>7</offset>
  </term>
  <term>
   <value>ON</value>
   <offset>14</offset>
  </term>
  <term>
   <value>Canada</value>
   <offset>18</offset>
  </term>
  <matched_substring>
   <offset>0</offset>
   <length>5</length>
  </matched_substring>
  <place_id>ChIJsamfQbVtLIgR-X18G75Hyi0</place_id>
  <structured_formatting>
   <description>Paris</description>
   <subdescription>Brant, ON, Canada</subdescription>
   <description_matched_substring>
    <offset>0</offset>
    <length>5</length>
   </description_matched_substring>
  </structured_formatting>
 </prediction>
 <prediction>
  <description>Paris, KY, USA</description>
  <type>locality</type>
  <type>political</type>
  <type>geocode</type>
  <reference>ChIJsU7_xMfKQ4gReI89RJn0-RQ</reference>
  <term>
   <value>Paris</value>
   <offset>0</offset>
  </term>
  <term>
   <value>KY</value>
   <offset>7</offset>
  </term>
  <term>
   <value>USA</value>
   <offset>11</offset>
  </term>
  <matched_substring>
   <offset>0</offset>
   <length>5</length>
  </matched_substring>
  <place_id>ChIJsU7_xMfKQ4gReI89RJn0-RQ</place_id>
  <structured_formatting>
   <description>Paris</description>
   <subdescription>KY, USA</subdescription>
   <description_matched_substring>
    <offset>0</offset>
    <length>5</length>
   </description_matched_substring>
  </structured_formatting>
 </prediction>
</AutocompletionResponse>

PlacesAutocompleteResponse

Field	Required	Type	Description
`predictions`	required	Array<PlaceAutocompletePrediction>	Contains an array of predictions. See PlaceAutocompletePrediction for more information.
`status`	required	PlacesAutocompleteStatus	Contains the status of the request, and may contain debugging information to help you track down why the request failed. See PlacesAutocompleteStatus for more information.
`error_message`	optional	string	When the service returns a status code other than `OK<`, there may be an additional `error_message` field within the response object. This field contains more detailed information about thereasons behind the given status code. This field is not always returned, and its content is subject to change.
`info_messages`	optional	Array<string>	When the service returns additional information about the request specification, there may be an additional `info_messages` field within the response object. This field is only returned for successful requests. It may not always be returned, and its content is subject to change.

在結果中特別值得注意的是 place_id 元素，可用於透過個別查詢要求地點的詳細資訊。請參閱「Place Details 要求」。

XML 回應包含單一 <AutocompletionResponse> 元素，其中包含兩種類型的子元素：

單一 <status> 元素包含要求的中繼資料。請參閱下方的狀態碼。
零或多個 <prediction> 元素，每個元素都包含單一地點的資訊。如要進一步瞭解這些結果，請參閱「Place Autocomplete 結果」。Places API 最多會傳回 5 個結果。

建議您使用 json 做為偏好的輸出標記，除非應用程式因某些原因需要 xml。處理 XML 樹狀結構時，請務必謹慎操作，以便參照適當的節點和元素。如需處理 XML 的相關說明，請參閱「使用 XPath 處理 XML」。

在部分自動預測結果中，地點 ID 的 Place Details 回應中可能不含 street_number 地址元件。無法插入地點的地址時，通常會發生這種情況。在這種情況下，預測結果的 types 陣列會包含「道路」。如果是說明中含有數字的自動預測結果 (輸入查詢比對成功)，則只有在預測結果的 types 陣列包含下列至少其中一項時，地點 ID 的 Place Details 回應才會包含門牌號碼：

street_address
premise
establishment

PlacesAutocompleteStatus

Status codes returned by service.

OK indicating the API request was successful.
ZERO_RESULTS indicating that the search was successful but returned no results. This may occur if the search was passed a bounds in a remote location.
INVALID_REQUEST indicating the API request was malformed, generally due to the missing input parameter.
OVER_QUERY_LIMIT indicating any of the following:
- You have exceeded the QPS limits.
- Billing has not been enabled on your account.
- The monthly $200 credit, or a self-imposed usage cap, has been exceeded.
- The provided method of payment is no longer valid (for example, a credit card has expired).
See the Maps FAQ for more information about how to resolve this error.
REQUEST_DENIED indicating that your request was denied, generally because:
- The request is missing an API key.
- The key parameter is invalid.
UNKNOWN_ERROR indicating an unknown error.

當地點服務傳回搜尋結果的 JSON 時，會將這些結果放入 predictions 陣列中。即使服務未傳回任何結果 (例如 location 為遠端)，仍會傳回空白 predictions 陣列。XML 回應包含零或多個 <prediction> 元素。

PlaceAutocompletePrediction

Field	Required	Type	Description
`description`	required	string	Contains the human-readable name for the returned result. For `establishment` results, this is usually the business name. This content is meant to be read as-is. Do not programmatically parse the formatted address.
`matched_substrings`	required	Array<PlaceAutocompleteMatchedSubstring>	A list of substrings that describe the location of the entered term in the prediction result text, so that the term can be highlighted if desired. See PlaceAutocompleteMatchedSubstring for more information.
`structured_formatting`	required	PlaceAutocompleteStructuredFormat	Provides pre-formatted text that can be shown in your autocomplete results. This content is meant to be read as-is. Do not programmatically parse the formatted address. See PlaceAutocompleteStructuredFormat for more information.
`terms`	required	Array<PlaceAutocompleteTerm>	Contains an array of terms identifying each section of the returned description (a section of the description is generally terminated with a comma). Each entry in the array has a `value` field, containing the text of the term, and an `offset` field, defining the start position of this term in the description, measured in Unicode characters. See PlaceAutocompleteTerm for more information.
`distance_meters`	optional	integer	The straight-line distance in meters from the origin. This field is only returned for requests made with an `origin`.
`place_id`	optional	string	A textual identifier that uniquely identifies a place. To retrieve information about the place, pass this identifier in the placeId field of a Places API request. For more information about place IDs, see the Place IDs overview.
`reference`	optional	string	`reference` is deprecated. See place_id.
`types`	optional	Array<string>	Contains an array of types that apply to this place. For example: `[ "political", "locality" ]` or `[ "establishment", "geocode", "beauty_salon" ]`. The array can contain multiple values. Learn more about Place types.

PlaceAutocompleteMatchedSubstring

Field	Required	Type	Description
`length`	required	number	Length of the matched substring in the prediction result text.
`offset`	required	number	Start location of the matched substring in the prediction result text.

PlaceAutocompleteStructuredFormat

Field	Required	Type	Description
`main_text`	required	string	Contains the main text of a prediction, usually the name of the place.
`main_text_matched_substrings`	required	Array<PlaceAutocompleteMatchedSubstring>	Contains an array with `offset` value and `length`. These describe the location of the entered term in the prediction result text, so that the term can be highlighted if desired. See PlaceAutocompleteMatchedSubstring for more information.
`secondary_text`	optional	string	Contains the secondary text of a prediction, usually the location of the place.
`secondary_text_matched_substrings`	optional	Array<PlaceAutocompleteMatchedSubstring>	Contains an array with `offset` value and `length`. These describe the location of the entered term in the prediction result text, so that the term can be highlighted if desired. See PlaceAutocompleteMatchedSubstring for more information.

PlaceAutocompleteTerm

Field	Required	Type	Description
`offset`	required	number	Defines the start position of this term in the description, measured in Unicode characters
`value`	required	string	The text of the term.

Place Autocomplete 最佳化

本節將說明最佳做法，協助您充分運用 Place Autocomplete 服務。

以下列出幾項一般準則：

如要開發有效的使用者介面，最快的方法就是使用 Maps JavaScript API Autocomplete 小工具、Places SDK for Android Autocomplete 小工具，或 Places SDK for iOS Autocomplete UI 控制項
從一開始就嘗試瞭解 Place Autocomplete 的必要資料欄位。
「位置自訂調整」和「位置限制」為自選欄位，但可能會對自動完成效能產生重大影響。
使用錯誤處理機制，可以減輕 API 傳回錯誤時對應用程式效能造成的影響。
確保應用程式能處理未選取任何項目的情況，以便使用者繼續操作。

費用最佳化最佳做法

基本費用最佳化

為了讓 Place Autocomplete 服務費用發揮最大效益，請使用 Place Details 和 Place Autocomplete 小工具中的欄位遮罩，只傳回所需的地點資料欄位。

進階費用最佳化

建議您透過程式輔助方式導入 Place Autocomplete，採用按請求計價，並要求已選地點 (而非 Place Details) 的相關 Geocoding API 結果。如果同時符合以下兩項條件，搭配 Geocoding API 使用「按要求」計價會比使用「按工作階段」(以工作階段為準) 計價更具成本效益：

如果您只需要針對使用者選取的地點取得經緯度或地址，透過 Geocoding API 擷取這項資訊，支付的費用會比使用 Place Details 呼叫更低。
如果使用者在平均四次以內的自動預測結果要求選取了自動預測結果，則「按要求」計價可能會比「按工作階段」計價更符合成本效益。

如要瞭解如何選取符合需求的 Place Autocomplete 導入方式，請回答下列問題，並選取對應的分頁標籤。

除了所選預測結果的地址和經緯度，應用程式是否需要任何其他資訊？

是，需要更多詳細資料

搭配 Place Details 使用以工作階段為準的 Place Autocomplete。
您的應用程式會要求 Place Details (例如地點名稱、商家狀態或營業時間)，因此在導入 Place Autocomplete 時，建議使用工作階段符記 (透過程式輔助方式，或是內建於 JavaScript、Android 或 iOS 小工具)，總費用為每個工作階段 $0.017 美元，再加上適用的地點資料 SKU (視您要求的地點資料欄位而定)¹。

透過小工具導入
JavaScript、Android 或 iOS 小工具自動內建工作階段管理功能，其中包含對已選取的預測結果提出的 Place Autocomplete 要求和 Place Details 要求。請務必指定 fields 參數，確保您只要求所需的地點資料欄位。

透過程式輔助方式導入
搭配 Place Autocomplete 要求使用工作階段符記。要求所選預測結果的相關 Place Details 時，請加入下列參數：

Place Autocomplete 回應中的地點 ID
Place Autocomplete 要求中使用的工作階段符記
指定所需地點資料欄位的 fields 參數

否，只需要地址和位置資訊

對您的應用程式而言，Geocoding API 可能比 Place Details 更符合成本效益，視 Place Autocomplete 使用效能而定。每個應用程式的自動完成效率各不相同，可能取決於使用者輸入的內容、使用應用程式的位置，以及是否採用效能最佳化最佳做法。

為了找出以下問題的解答，請分析使用者在應用程式中選取 Place Autocomplete 預測結果前，平均輸入的字元數量。

使用者是否會在平均四次以內的要求中選取 Place Autocomplete 預測結果？

是

透過程式輔助方式導入 Place Autocomplete，但不使用工作階段符記，並針對已選取的地點預測結果呼叫 Geocoding API。
Geocoding API 提供地址和經緯度座標，收費為每次要求 $0.005 美元。提出四次 Place Autocomplete - Per Request 要求的費用為 $0.01132 美元，因此如果將四次要求加上所選地點預測結果的相關 Geocoding API 呼叫，總費用就會是 $0.01632 美元，低於自動完成功能「按工作階段」計價的每個工作階段 $0.017 美元¹。

建議您採用效能最佳做法，讓使用者以更少的字元找到需要的預測結果。

否

搭配 Place Details 使用以工作階段為準的 Place Autocomplete。
您預期使用者在選取 Place Autocomplete 預測結果前提出的平均要求數量，會超過「按工作階段」計價的費用，因此在導入 Place Autocomplete 時，建議針對 Place Autocomplete 要求和相關聯的 Place Details 要求都使用工作階段符記，總費用為每個工作階段 $0.017 美元¹。

透過小工具導入
JavaScript、Android 或 iOS 小工具自動內建工作階段管理功能，其中包含對已選取的預測結果提出的 Place Autocomplete 要求和 Place Details 要求。請務必指定 fields 參數，確保只要求需要的 Basic Data 欄位。

透過程式輔助方式導入
搭配 Place Autocomplete 要求使用工作階段符記。要求所選預測結果的相關 Place Details 時，請加入下列參數：

Place Autocomplete 回應中的地點 ID
Place Autocomplete 要求中使用的工作階段符記
指定地址和幾何圖形等 Basic Data 欄位的 fields 參數

考慮延後 Place Autocomplete 要求
您可以運用一些策略，例如將 Place Autocomplete 要求延後到使用者輸入三或四個字元時再開始，藉此減少應用程式提出要求數量。舉例來說，如果您是在使用者輸入第三個字元「之後」才針對每個字元提出 Place Autocomplete 要求，那麼當使用者在輸入七個字元後，選取您透過單次 Geocoding API 要求帶出的一筆預測結果，總費用就是 $0.01632 美元 (4 * $0.00283 Autocomplete Per Request + $0.005 美元 Geocoding)¹。

如果延後要求可以讓平均程式輔助要求少於四次，您可以按照使用 Geocoding API 提高 Place Autocomplete 效能的指南操作。請注意，如果使用者希望每輸入一個字就能看到預測結果，可能就會將延後要求視為時間上的延遲。

建議您採用效能最佳做法，讓使用者以更少的字元找到需要的預測結果。

這裡列出的費用是以美元計算。如需完整計價資訊，請參閱「Google 地圖平台計費方式」頁面。

效能最佳做法

以下準則說明如何將 Place Autocomplete 效能最佳化：

針對導入的 Place Autocomplete 加入國家/地區限制、位置自訂調整和 (適用於程式輔助導入) 語言偏好設定。小工具會從使用者的瀏覽器或行動裝置選擇語言偏好設定，因此不需要設定語言偏好。
如果 Place Autocomplete 附帶地圖，您就可以根據地圖可視區域進行位置自訂調整。
如果使用者沒有選擇任何自動完成預測結果 (通常是因為這些預測結果並非他們想要的地址)，您可以重複使用原始使用者輸入內容，嘗試取得更相關的結果：
- 如果您預期使用者只會輸入地址資訊，請在 Geocoding API 呼叫中重複使用原始使用者輸入內容。
- 如果您預期使用者會依名稱或地址查詢某個地點，請使用「Find Place」要求。如果希望將結果範圍限制在特定區域，請使用位置自訂調整。
適合改回使用 Geocoding API 的其他情況如下：
- 使用者輸入子區域地址，例如建築物內特定單位或公寓的地址。例如，捷克地址「Stroupežnického 3191/17, Praha」在 Place Autocomplete 中會產生不完整的預測結果。
- 使用者輸入的地址含有路段前置字元，例如紐約的「23-30 29th St, Queens」或夏威夷考艾島的「47-380 Kamehameha Hwy, Kaneohe」。

位置偏差

傳遞 location 參數和 radius 參數，針對特定區域調整結果。這會指示 Place Autocomplete 服務優先顯示所定義區域內的結果。不過，系統還是有可能會顯示定義區域外的結果。您可以使用 components 參數篩選結果，只顯示特定國家/地區內的場所。

警告：如果未提供 radius，系統會略過 location 參數。

提示：當搜尋範圍廣泛時，機構結果通常不會排在搜尋結果中。如果您希望商家顯示在混合商家/地理編碼結果中，可以指定較小的半徑。或者，您也可以使用 types=establishment 將結果限制為僅顯示商家。

位置限制

傳遞 locationrestriction 參數，將結果限制在指定區域。

您也可以新增 strictbounds 參數，將結果限制在 location 和 radius 參數定義的區域內。這會指示 Place Autocomplete 服務「只傳回」該區域內的結果。

Place Autocomplete

Place Autocomplete 要求

Required parameters

input

Optional parameters

components

language

location

locationbias

locationrestriction

offset

origin

radius

region

sessiontoken

strictbounds

types

Place Autocomplete 範例

網址

cURL

網址

cURL

網址

cURL

網址

cURL

Place Autocomplete 回應

網址

cURL

JSON

XML

PlacesAutocompleteResponse

predictions

status

error_message

info_messages

PlacesAutocompleteStatus

PlaceAutocompletePrediction

description

matched_substrings

structured_formatting

terms

distance_meters

place_id

reference

types

PlaceAutocompleteMatchedSubstring

length

offset

PlaceAutocompleteStructuredFormat

main_text

main_text_matched_substrings

secondary_text

secondary_text_matched_substrings

PlaceAutocompleteTerm

offset

value

Place Autocomplete 最佳化

費用最佳化最佳做法

基本費用最佳化

進階費用最佳化

是，需要更多詳細資料

否，只需要地址和位置資訊

是

否

效能最佳做法

位置偏差

位置限制

`predictions`

`status`

`error_message`

`info_messages`

`description`

`matched_substrings`

`structured_formatting`

`terms`

`distance_meters`

`place_id`

`reference`

`types`

`length`

`offset`

`main_text`

`main_text_matched_substrings`

`secondary_text`

`secondary_text_matched_substrings`

`offset`

`value`