本文介绍了如何从Google Maps Directions Api获取多段线的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！
问题描述
我正在尝试绘制一个的问题使用谷歌地图方向Api，但我该如何使用JSON值来做到这一点，因为在api中，有很多纬度和长度以及多边形。像这样的点：
和I don我不知道应该使用哪一个，任何人都可以帮助我：）
{
geocoded_waypoints：[
$}，
{}
]，
routes：[
{
界限：{
东北：{
lat：39.2846595，
lng：-8.7036795
}，
西南：{
lat：38.7223249，
lng：-9.1393372
}
}，
版权：Dados do mapa©2017 Google，Inst。Geogr。Nacional，
双腿：[
{
dist ance：{}，
持续时间：{}，
end_address：Lisboa，Portugal，
end_location：{
lat：38.7223249，
lng：-9.1393372
}，
start_address：葡萄牙圣塔伦，
start_location：{
lat：39.2846595，
lng：-8.7049071
}，
步骤：[
{
distance：{}，
duration：{}，
end_location：{
lat：39.2822117，
lng：-8.7036403
}，
html_instructions：Siga< b> sul< / b> em
$ b points：cxwnFtdct @ JEVGLCR？PDTFNHTNNNPJPDRDN？JCHCv @ i @ VQTK`CkF
}，
start_location：{
lat：39.2846595，
lng：-8.7049071
}，
travel_mode：DRIVING
}，
{}，
]，
traffic_speed_entry：[]，
via_waypoint：[]
}
]，
overview_polyline：{points：cxwnFtdct @ dAQlAf @ fAf @ |水溶液@升@] pCcFhCjA | LfJlAT〜@ IPDI @戳@频率@ HXI @ T @ kBhBeBx @ QZ @ Z @ dClHzFpW`H | RvTpj @`AxAdBdAnAXhB FBK @ rAcAnG_HhCgAjAKrATbA`Al @ lBHnAc @ rFgBhIkCxMBfIlBvHnBtCnB |？AnEdCrJxFj @ fB的3 H @ OhAgCtHGfCl @ jAlA\jE] tDBzBb @ tLxFtK〜E`d @ hShIzEtDhDxDrEfDpFlFjNvDtRdDjThF`TzH`QhEhG | EvFhL`JpJtE | LpEdOpFjOzGlPfJlHzE〜NjLfQvPfP | RtHrKxDjGfI | NdHbOvGjPfCbHpCtIvJh_ @ VG | [| CtNvFvSvE〜MFI | QzLbTfNxQbKlKrRzP | NnNvNlQjIzMnLfV`T | H @ nDbHhIdMxFjH〜JrMnEfHzIrQfHvOtEjI | MnQfNzP`FzI〜戊nLrKp [nDlHvErHzL〜MbRbM`EjCjFxEtRnX | d〜EjIhI〜WrRxGlGdFnG`JjNxHzKfTxVfKfRfMbRlErHtBlFxIjYvHnPpBtFxF〜WpCjHjGhJfDzClF〜CnDlArDl @ pC\vHXvX [lOaB | GcBdFqBxQwJbDmAxE_ApJ_ @ jEXtItBrQ〜EbQbDlUfBpMfA | IxCbF`DhGlGnJjKtJrF`SpFbRnDdUxAbGrAlEjBnFpDtNnMfGlE〜[lTbRdQjTpUxH`GjHfEnGlC`O | DrUxEnEzAfFrBnSpIjPnDxSlAf\lAl 〜@ ^ hDzRrAjOpBvKrBrQtEv @ pM`` RPRR | JxSdMlGnGfGtH〜HxFdFlBtGfApGp @的bG | AnHxD | FzFrH`L〜FVH | HrFrFtBtFjA〜// @山PHR | FhA`IfDpEbDzFxGrHrKhEtErF`EnS`MzMvItSdUfF〜DTE〜C | SrInEnBzDtCxN`QpQfVtQ〜YJN @〜FANK `RvLlRzEjF | GlFrc @ vUfRjKfIvGxDhEjIxKdN〜T`L〜MrFvE〜LhIlp @ FB @ xCtBzFtFbEzFbDrGhH`TfF | JnGfHzEdD | UdIpTdHtKtFj] nUrEzC〜[pTfLfG | EBB〜KfCnTvDpmAxSzs @〜LhOfDzOdFfOxGdY`O`k @ zYnVzMlK | HrFjFbXj [rCbCvDfB | FfBbD ^ xRBlb @nBrIdArJvDfD | B | FzFvFzHnCbIDrCk @ dA_A_ @ q因子@兆赫@ sAvAJ ^ F 5 R @ N @ X @ UR_ @ fBGjET`S〜@ RO @ pCpXpAfFp @ dEhCnGtE @ HXL @ N @ H ^ W | ASpShAbZxAtPp @〜SjAzGZKdDStBd @ X @ dC @ nEVz @ HtAp @ b @ \OZ | AbBxDnFJf @
}，
摘要：A1，
警告：[]，
waypoint_order：[]
}
]，
status：OK
}
解决方案将overview_polyline转换为LatLng列表并添加为映射中的polyling
使用由Google提供的PolyUtil。
I'm trying to draw a polyline using the Google Maps Directions Api, but how do I use the JSON values to make this, because in the api, there is a lot of lat and long and polylines.points like this:
and I don't know which one should I use, can anyone help me :)
{
geocoded_waypoints: [
{},
{}
],
routes: [
{
bounds: {
northeast: {
lat: 39.2846595,
lng: -8.7036795
},
southwest: {
lat: 38.7223249,
lng: -9.1393372
}
},
copyrights: "Dados do mapa ©2017 Google, Inst. Geogr. Nacional",
legs: [
{
distance: {},
duration: {},
end_address: "Lisboa, Portugal",
end_location: {
lat: 38.7223249,
lng: -9.1393372
},
start_address: "Santarém, Portugal",
start_location: {
lat: 39.2846595,
lng: -8.7049071
},
steps: [
{
distance: {},
duration: {},
end_location: {
lat: 39.2822117,
lng: -8.7036403
},
html_instructions: "Siga <b>sul</b> em direção a <b>N3</b>",
polyline: {
points: "cxwnFtdct@JEVGLCR?PDTFNHTNNNPJPDRDN?JCHCv@i@VQTK`CkF"
},
start_location: {
lat: 39.2846595,
lng: -8.7049071
},
travel_mode: "DRIVING"
},
{},
],
traffic_speed_entry: [],
via_waypoint: []
}
],
overview_polyline: { points:"cxwnFtdct@dAQlAf@fAf@|Aq@l@]pCcFhCjA|LfJlAT~@IpDi@jAb@f@HXi@t@kBhBeBx@Qz@z@dClHzFpW`H|RvTpj@`AxAdBdAnAXhB?fBk@rAcAnG_HhCgAjAKrATbA`Al@lBHnAc@rFgBhIkCxMBfIlBvHnBtCnB|AnEdCrJxFj@fB@h@OhAgCtHGfCl@jAlA\jE]tDBzBb@tLxFtK~E`d@hShIzEtDhDxDrEfDpFlFjNvDtRdDjThF`TzH`QhEhG|EvFhL`JpJtE|LpEdOpFjOzGlPfJlHzE~NjLfQvPfP|RtHrKxDjGfI|NdHbOvGjPfCbHpCtIvJh_@vG|[|CtNvFvSvE~MfI|QzLbTfNxQbKlKrRzP|NnNvNlQjIzMnLfV`T|h@nDbHhIdMxFjH~JrMnEfHzIrQfHvOtEjI|MnQfNzP`FzI~EnLrKp[nDlHvErHzL~MbRbM`EjCjFxEtRnX|D~EjIhI~WrRxGlGdFnG`JjNxHzKfTxVfKfRfMbRlErHtBlFxIjYvHnPpBtFxF~WpCjHjGhJfDzClF~CnDlArDl@pC\vHXvX[lOaB|GcBdFqBxQwJbDmAxE_ApJ_@jEXtItBrQ~EbQbDlUfBpMfA|IxCbF`DhGlGnJjKtJrF`SpFbRnDdUxAbGrAlEjBnFpDtNnMfGlE~[lTbRdQjTpUxH`GjHfEnGlC`O|DrUxEnEzAfFrBnSpIjPnDxSlAf\lAl~@hDzRrAjOpBvKrBrQtEv^pM``@rPrR|JxSdMlGnGfGtH~HxFdFlBtGfApGp@bG|AnHxD|FzFrH`L~FvH|HrFrFtBtFjA~Mt@pHR|FhA`IfDpEbDzFxGrHrKhEtErF`EnS`MzMvItSdUfF~DtE~B|SrInEnBzDtCxN`QpQfVtQ~Yjn@~fAnK`RvLlRzEjF|GlFrc@vUfRjKfIvGxDhEjIxKdN~T`L~MrFvE~LhIlp@fb@xCtBzFtFbEzFbDrGhH`TfF|JnGfHzEdD|UdIpTdHtKtFj]nUrEzC~[pTfLfG|EbB~KfCnTvDpmAxSzs@~LhOfDzOdFfOxGdY`O`k@zYnVzMlK|HrFjFbXj[rCbCvDfB|FfBbD^xRBlb@nBrIdArJvDfD|B|FzFvFzHnCbIDrCk@dA_A_@q@mHz@sAvAJ^f@r@n@x@UR_@fBGjET`S~@ro@pCpXpAfFp@dEhCnGtE@HXl@n@H^W|ASpShAbZxAtPp@~SjAzGZKdDStBd@x@dC@nEVz@HtAp@b@\OZ|AbBxDnFJf@"
},
summary: "A1",
warnings: [],
waypoint_order: []
}
],
status: "OK"
}
解决方案 Convert overview_polyline into list of LatLng and add as polyling in map
Use PolyUtil provided from google.
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