如何判断 Google 的街景图像 API 是否返回“抱歉，我们这里没有图像"?(即.NULL)结果? [英] How can I tell if Google's Streetview Image API Returns "Sorry, we have no imagery here" (ie. NULL) Result?

问题描述

Google 街景图像 API 可让您嵌入静态(非交互式)街景全景图或缩略图显示在您的网页中，无需使用 JavaScript.

The Google Street View Image API lets you embed a static (non-interactive) Street View panorama or thumbnail into your web page, without the use of JavaScript.

请求网址:http://maps.googleapis.com/maps/api/streetview?parameters

+问题+

如果我给它一个没有街景的地址，它会返回一张图片，上面写着抱歉，我们这里没有图片".

If I give it an address for which it doesn't have a Streetview, it returns an image that says, "Sorry, we have no imagery here".

基于当前的 API，我无法检测它是否找到街景.任何人都有解决这个问题的技巧或建议?

Based on the current API, I have no way of detecting if it found a Streetview or not. Anyone have a hack or suggestion for figuring this out?

+示例+

正确的街景:http://maps.googleapis.com/maps/api/streetview?size=300x300&sensor=false&location=100+Highland+Ave+Baltimore,+MD+21224

抱歉街景:http://maps.googleapis.com/maps/api/streetview?size=300x300&sensor=false&location=1600+Pennsylvania+Ave,+Washington,+DC+20500

推荐答案

考虑在 Google 地图中使用 StreetViewService 和 StreetViewStatus 对象:https://developers.google.com/maps/documentation/javascript/streetview#StreetViewService

Consider using StreetViewService and StreetViewStatus objects in Google Maps: https://developers.google.com/maps/documentation/javascript/streetview#StreetViewService

本质上，您需要做的是创建一个 StreetViewService 对象，该对象将尝试根据位置查找全景图，使用 getPanoramaByLocation(latlng:LatLng, radius:number, callback:function(StreetViewPanoramaData, StreetViewStatus)) 方法.

Essentially what you'll have to do is create a StreetViewService object that will try to find a panorama based on location, using the getPanoramaByLocation(latlng:LatLng, radius:number, callback:function(StreetViewPanoramaData, StreetViewStatus)) method.

在回调函数中，有一个条件参数将检查数据可用性if (status == google.maps.StreetViewStatus.OK).根据布尔值返回，执行所需的操作.我提供的第一个链接是使用这些方法的一个很好的例子.

In the callback function, have a conditional argument that will check for the data availability if (status == google.maps.StreetViewStatus.OK). Based on the boolean return, execute the desired actions. The first link I provided got a great example of the use of these methods.

注意:我还注意到您有基于地址的位置.这可以使用地理编码服务( https://developers.google.com/maps/documentation/javascript/geocoding )

Note: I also notice you've got locations based on addresses. This can be simply converted to LatLng using the Geocoding Service ( https://developers.google.com/maps/documentation/javascript/geocoding )

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