如何计算城市中两个区域之间的距离

Question

I wanted to make an android app which provides the distance between two areas in a city.

The user will have two input fields where he must enter the two area names he would like to find the distance.

After he enters the area name. My app should display the distance.

How should I implement this?

Answer 1

First of all you need to find latitude and longitude of that area name.

Convert both address in Location object, refer this .

Calculate distance by using distanceTo()

location1.distanceTo(location2);

Returns the approximate distance in meters between this location and the given location.

refer this for distanceTo() detail.

Answer 2

首先获取起点和终点的经度和纬度，然后使用Location类的distanceBetween方法计算距离，此处为链接http://developer.android.com/reference/android/location/Location.html#distanceBetween(double,% 20double，％20double，％20double，％20float []）

Answer 3

Use the Google Maps Directions API . You'll need to request the directions over HTTP. You can do this directly from Android, or via your own server.

For example, directions from Montreal to Toronto :

GET http://maps.googleapis.com/maps/api/directions/json?origin=Toronto&destination=Montreal&sensor=false

You'll end up with some JSON. In routes[].legs[].distance , you'll get an object like this:

  "legs" : [
        {
           "distance" : {
              "text" : "542 km",
              "value" : 542389
           },

You can also get the polyline information directly from the response object.

for more detail visit here. Get the distance between two locations in android?