Android根据地址获取经纬度，根据经纬度

获取经纬度

public Address getGeoPointBystr(String str) {
Address address_temp = null;
if (str != null) {
Geocoder gc = new Geocoder(RoutePlanDemo.this, Locale.CHINA);
List<Address> addressList = null;
try {

addressList = gc.getFromLocationName(str, 1);
if (!addressList.isEmpty()) {
address_temp = addressList.get(0);
// 计算经纬度
double Latitude = address_temp.getLatitude();
double Longitude = address_temp.getLongitude();
System.out.println("经度：" + Latitude);
System.out.println("纬度：" + Longitude);
// 生产GeoPoint
}
} catch (IOException e) {
e.printStackTrace();
}
}
return address_temp;
}

计算距离

public static double getDistance(double longitude1, double latitude1,
double longitude2, double latitude2) {
double Lat1 = rad(latitude1);
double Lat2 = rad(latitude2);
double a = Lat1 - Lat2;
double b = rad(longitude1) - rad(longitude2);
double s = 2 * Math.asin(Math.sqrt(Math.pow(Math.sin(a / 2), 2)
+ Math.cos(Lat1) * Math.cos(Lat2)
* Math.pow(Math.sin(b / 2), 2)));
s = s * EARTH_RADIUS;
s = Math.round(s * 10000) / 10000;
return s;
}

private static double rad(double d) {
return d * Math.PI / 180.0;
}

Main 调用

Address add1 = getGeoPointBystr("北京市丰台区科兴路7号");
Address add2 = getGeoPointBystr("北京市天安门");
double d=getDistance(add1.getLongitude(), add1.getLatitude(),
add2.getLongitude(), add2.getLatitude());
System.out.println("多少米 ： " +d);