沿路線搜尋

如要使用 Text Search (新版) 沿著路線搜尋,請在要求中以多邊形的形式傳遞 Routes API 中預先計算的路線。回應包含符合搜尋條件且位於指定路線附近的地點。

如要沿路線搜尋,請按照下列步驟操作:

  1. 使用 Routes API 計算在回應中傳迴路線編碼折線的路徑。

  2. 使用 SearchAlongRouteParameters.setPolyline() 將路線的已編碼多邊形傳遞至 Text Search (新),以便將搜尋結果偏向路線。回應隨後會包含符合搜尋條件,且位於指定路線附近的地點。

根據預設,Text Search (新版) 會沿著多邊形定義的路線,從起點到目的地執行搜尋。在以下範例中,折線定義了從:

  • 出發地:1600 Amphitheatre Parkway, Mountain View, CA
  • 目的地:24 Willie Mays Plaza, San Francisco, CA

行程的路線編碼折線由下列字串表示:

wblcFptchVIFOd@G@EVw@Ms@dHKR}ApNA`AF~@Hf@TjAb@bBb@~@n@p@^Rd@~@Vz@HVz@nDLt@?d@Kr@c@~@mD`G?`@aEfGkCnDuChDm`@bb@[`@{GhHeEdEciBnnBkC`DkC~DaClEuKjT_Z|l@Qb@iR~_@}EzJ_AdB_Und@kAfCaOjZkg@vcAqBzD_]rr@iBlEaBxEgArD}AlG}AhHsA`IeAnH{@dIq@dJgL~iBq@rHu@vGgAtHwArHaBhHkBzG_DpJ}Nbc@iBhGkA|EgC|LcIjb@oAhG_AvDgAdDkApC_BzCiBpCsFvGii@vn@scAxlAmLjNgSzUeRjT{TzWqExEmG|FuNlMmMhLaRvPqOlNmbAl}@mFlF{PlOmJfIoElE}LtMiSbU_H`I}}@jcAwl@vp@oAbBqA~BeAhCm@tBg@fCWrBQ~BI|DaB~rBO~D[bEa@`Dm@pDaAdE{@vC_BbEkB~Def@|z@sEzHKJeS~]}K`S{\\~l@cXpe@sBpDm@bAuCxDkBrBiC~BwCtByBnAcBx@}Bt@{Bn@gh@|LaOpDeFhAoDj@aE^kVrA_E^iEr@yD~@uBr@gMjF_EnAcCh@eFr@_DRsAD}@Jsu@xCWDqIV}BCeCOyDm@cBa@_DmA}JeE_CwAsBcBiBoBuAqBmOoX{CuEkB_CoDqDkVoUoD{CeE_DkEkC_FeCqB}@sDuAoDgAeCe@cCW}CK}BDaDTeOlBcuBrYaNlBq@Dyd@rGyFt@yBb@eBf@oCnAoBlAkIpGkAp@wBbAaCt@oFdAwKjBoGxA{FbByIjC_HfB_@KmNdDuC|@uFzBcH|C{@\\[?sBv@}@VaBVoA@y@EmAQcA[w@]aBkAeAkA}BuDUKs@uAqBsCwBcCgAiAiN_MyKsJsG{GkBaBiBuA{BwAwDkBcOaHiC_AiCg@}BQcCAcBHqBVkB`@qEjAu@LgCVgAHwG@sG?mABsH^eNr@mBXy@NqBt@uAt@aBlAkAlA}BtCyApBiAdB_BxB{A`B}@j@oAf@s@PeCVcIf@gAAkAQy@YiAo@_A{@_DgEgJqM_DeEaM}PoBiCzAsBw@kAdAGVk@f@q@z@C

以下範例使用路線的編碼多邊形來偏向搜尋結果:

// Define the route polyline object using the route string.
EncodedPolyline encodedPolyline = EncodedPolyline.newInstance("wblcFptchVIFOd@G@EVw@Ms@dHKR}ApNA`AF~@Hf@TjAb@bBb@~@n@p@^Rd@~@Vz@HVz@nDLt@?d@Kr@c@~@mD`G?`@aEfGkCnDuChDm`@bb@[`@{GhHeEdEciBnnBkC`DkC~DaClEuKjT_Z|l@Qb@iR~_@}EzJ_AdB_Und@kAfCaOjZkg@vcAqBzD_]rr@iBlEaBxEgArD}AlG}AhHsA`IeAnH{@dIq@dJgL~iBq@rHu@vGgAtHwArHaBhHkBzG_DpJ}Nbc@iBhGkA|EgC|LcIjb@oAhG_AvDgAdDkApC_BzCiBpCsFvGii@vn@scAxlAmLjNgSzUeRjT{TzWqExEmG|FuNlMmMhLaRvPqOlNmbAl}@mFlF{PlOmJfIoElE}LtMiSbU_H`I}}@jcAwl@vp@oAbBqA~BeAhCm@tBg@fCWrBQ~BI|DaB~rBO~D[bEa@`Dm@pDaAdE{@vC_BbEkB~Def@|z@sEzHKJeS~]}K`S{\\~l@cXpe@sBpDm@bAuCxDkBrBiC~BwCtByBnAcBx@}Bt@{Bn@gh@|LaOpDeFhAoDj@aE^kVrA_E^iEr@yD~@uBr@gMjF_EnAcCh@eFr@_DRsAD}@Jsu@xCWDqIV}BCeCOyDm@cBa@_DmA}JeE_CwAsBcBiBoBuAqBmOoX{CuEkB_CoDqDkVoUoD{CeE_DkEkC_FeCqB}@sDuAoDgAeCe@cCW}CK}BDaDTeOlBcuBrYaNlBq@Dyd@rGyFt@yBb@eBf@oCnAoBlAkIpGkAp@wBbAaCt@oFdAwKjBoGxA{FbByIjC_HfB_@KmNdDuC|@uFzBcH|C{@\\[?sBv@}@VaBVoA@y@EmAQcA[w@]aBkAeAkA}BuDUKs@uAqBsCwBcCgAiAiN_MyKsJsG{GkBaBiBuA{BwAwDkBcOaHiC_AiCg@}BQcCAcBHqBVkB`@qEjAu@LgCVgAHwG@sG?mABsH^eNr@mBXy@NqBt@uAt@aBlAkAlA}BtCyApBiAdB_BxB{A`B}@j@oAf@s@PeCVcIf@gAAkAQy@YiAo@_A{@_DgEgJqM_DeEaM}PoBiCzAsBw@kAdAGVk@f@q@z@C");

// Specify the list of fields to return.
final List<Place.Field> placeFields = Arrays.asList(Place.Field.ID, Place.Field.NAME);

// Define the search along route parameters object and pass the polyline object.
SearchAlongRouteParameters searchAlongRouteParameters = SearchAlongRouteParameters.builder()
  .setPolyline(encodedPolyline)
  .build();

// Use the builder to create a SearchByTextRequest object and pass the search along route parameters.
final SearchByTextRequest searchByTextRequest = SearchByTextRequest.builder("Spicy Vegetarian Food", placeFields)
  .setMaxResultCount(10)
  .setSearchAlongRouteParameters(searchAlongRouteParameters)
  .build();

// Call PlacesClient.searchByText() to perform the search.
// Define a response handler to process the returned List of Place objects.
placesClient.searchByText(searchByTextRequest)   
  .addOnSuccessListener(response -> {
      List<Place> places = response.getPlaces();
  });

SearchByTextResponse 類別代表搜尋要求的回應。SearchByTextResponse 物件包含:

  • 代表所有相符地點的 Place 物件清單,每個相符地點對應一個 Place 物件。
  • 每個 Place 物件只包含要求中傳遞的欄位清單所定義的欄位。

您不必將結果偏向整個路線。舉例來說,您在執行搜尋時,可能已經在路線的一半路程。在這種情況下,您可以為搜尋作業指定明確的路徑來源,以便覆寫在編碼折線中定義的來源。在以下範例中,您會指定加州聖馬刁的經緯度座標,該座標大約位於路線折線的中間位置:

// Define the route polyline object using the route string.
EncodedPolyline encodedPolyline = EncodedPolyline.newInstance("wblcFptchVIFOd@G@EVw@Ms@dHKR}ApNA`AF~@Hf@TjAb@bBb@~@n@p@^Rd@~@Vz@HVz@nDLt@?d@Kr@c@~@mD`G?`@aEfGkCnDuChDm`@bb@[`@{GhHeEdEciBnnBkC`DkC~DaClEuKjT_Z|l@Qb@iR~_@}EzJ_AdB_Und@kAfCaOjZkg@vcAqBzD_]rr@iBlEaBxEgArD}AlG}AhHsA`IeAnH{@dIq@dJgL~iBq@rHu@vGgAtHwArHaBhHkBzG_DpJ}Nbc@iBhGkA|EgC|LcIjb@oAhG_AvDgAdDkApC_BzCiBpCsFvGii@vn@scAxlAmLjNgSzUeRjT{TzWqExEmG|FuNlMmMhLaRvPqOlNmbAl}@mFlF{PlOmJfIoElE}LtMiSbU_H`I}}@jcAwl@vp@oAbBqA~BeAhCm@tBg@fCWrBQ~BI|DaB~rBO~D[bEa@`Dm@pDaAdE{@vC_BbEkB~Def@|z@sEzHKJeS~]}K`S{\\~l@cXpe@sBpDm@bAuCxDkBrBiC~BwCtByBnAcBx@}Bt@{Bn@gh@|LaOpDeFhAoDj@aE^kVrA_E^iEr@yD~@uBr@gMjF_EnAcCh@eFr@_DRsAD}@Jsu@xCWDqIV}BCeCOyDm@cBa@_DmA}JeE_CwAsBcBiBoBuAqBmOoX{CuEkB_CoDqDkVoUoD{CeE_DkEkC_FeCqB}@sDuAoDgAeCe@cCW}CK}BDaDTeOlBcuBrYaNlBq@Dyd@rGyFt@yBb@eBf@oCnAoBlAkIpGkAp@wBbAaCt@oFdAwKjBoGxA{FbByIjC_HfB_@KmNdDuC|@uFzBcH|C{@\\[?sBv@}@VaBVoA@y@EmAQcA[w@]aBkAeAkA}BuDUKs@uAqBsCwBcCgAiAiN_MyKsJsG{GkBaBiBuA{BwAwDkBcOaHiC_AiCg@}BQcCAcBHqBVkB`@qEjAu@LgCVgAHwG@sG?mABsH^eNr@mBXy@NqBt@uAt@aBlAkAlA}BtCyApBiAdB_BxB{A`B}@j@oAf@s@PeCVcIf@gAAkAQy@YiAo@_A{@_DgEgJqM_DeEaM}PoBiCzAsBw@kAdAGVk@f@q@z@C");

// Specify the list of fields to return.
final List<Place.Field> placeFields = Arrays.asList(Place.Field.ID, Place.Field.NAME);

// Define the routing parameters object and pass the routing origin.
RoutingParameters routingParameters = RoutingParameters.builder()
  .setOrigin(toLatLng("37.56617, -122.30870"))
  .build();

// Define the search along route parameters object and pass the polyline object.
SearchAlongRouteParameters searchAlongRouteParameters = SearchAlongRouteParameters.builder()
  .setPolyline(encodedPolyline)
  .build();

// Use the builder to create a SearchByTextRequest object and pass the search along route and routing parameters.
final SearchByTextRequest searchByTextRequest = SearchByTextRequest.builder("Spicy Vegetarian Food", placeFields)
  .setMaxResultCount(10)
  .setRoutingParameters(routingParameters)
  .setSearchAlongRouteParameters(searchAlongRouteParameters)
  .build();

// Call PlacesClient.searchByText() to perform the search.
// Define a response handler to process the returned List of Place objects.
placesClient.searchByText(searchByTextRequest)   
  .addOnSuccessListener(response -> {
      List<Place> places = response.getPlaces();
  });