高德地图地理码和经纬度转化（latlng和latlonpoint）

1、
geocoderSearch = new GeocodeSearch(this);
geocoderSearch.setOnGeocodeSearchListener(this);
重写他的onGeocodeSearched、onRegeocodeSearched的两个Void的方法来实现地理码的转化和逆转。

2、地理码转化成经纬度
主要代码：
// 第一个参数表示地址，第二个参数表示查询城市，中文或者中文全拼，citycode、adcode，
都不写则默认所有城市
GeocodeQuery query = new GeocodeQuery(name, null);
geocoderSearch.getFromLocationNameAsyn(query);// 设置同步地理编码请求

      地理编码查询回调
    
    @Override
    public void onGeocodeSearched(GeocodeResult result, int rCode) {
        dismissDialog();
        if (rCode == 1000) {
            if (result != null && result.getGeocodeAddressList() != null
                    && result.getGeocodeAddressList().size() > 0) {

                GeocodeAddress address = result.getGeocodeAddressList().get(0)
                double dimensionality = address.getLatLonPoint().getLatitude();
                double longitude = address.getLatLonPoint().getLongitude();
                LatLng latlng = new LatLng(dimensionality, longitude);
   
                aMap.animateCamera(CameraUpdateFactory
                        .newLatLngZoom(latlng, 15));
                geoMarker.setPosition(AMapUtil.convertToLatLng(address
                        .getLatLonPoint()));
                addressName = "经纬度值:" + address.getLatLonPoint() + "\n位置描述:"
                        + address.getFormatAddress();
                ToastUtil.show(GeocoderActivity.this, addressName);
            } else {
                ToastUtil.show(GeocoderActivity.this, "shiasa");
            }
        } else {
            ToastUtil.showerror(this, rCode);
        }
    }
3、通过经纬度转化为地理地址

LatLonPoint latLonPoint = new LatLonPoint(39.90865, 116.39751);
// 第一个参数表示一个Latlng，第二参数表示范围多少米，第三个参数表示是火系坐标系还是GPS原生坐标系
RegeocodeQuery query = new RegeocodeQuery(latLonPoint, 200, GeocodeSearch.AMAP);
 // 设置同步逆地理编码请求            
 geocoderSearch.getFromLocationAsyn(query);

逆地理编码回调
@Override
    public void onRegeocodeSearched(RegeocodeResult result, int rCode) {
        dismissDialog();
        if (rCode == 1000) {
            if (result != null && result.getRegeocodeAddress() != null
                    && result.getRegeocodeAddress().getFormatAddress() != null) {

                addressName = result.getRegeocodeAddress().getFormatAddress()
                        + "附近";

                aMap.animateCamera(CameraUpdateFactory.newLatLngZoom(
                        AMapUtil.convertToLatLng(latLonPoint), 15));
                regeoMarker.setPosition(AMapUtil.convertToLatLng(latLonPoint));
                ToastUtil.show(GeocoderActivity.this, addressName);
            } else {
                ToastUtil.show(GeocoderActivity.this, "shiasa");
            }
        } else {
            ToastUtil.showerror(this, rCode);
        }
    }
4、精华一句
latlng=AMapUtil.convertToLatLng(latLonPoint)

AMapUtil 工具类

public class AMapUtil {
    /**
     * 判断edittext是否null
     */
    public static String checkEditText(EditText editText) {
        if (editText != null && editText.getText() != null
                && !(editText.getText().toString().trim().equals(""))) {
            return editText.getText().toString().trim();
        } else {
            return "";
        }
    }

    public static Spanned stringToSpan(String src) {
        return src == null ? null : Html.fromHtml(src.replace("\n", "<br />"));
    }

    public static String colorFont(String src, String color) {
        StringBuffer strBuf = new StringBuffer();

        strBuf.append("<font color=").append(color).append(">").append(src)
                .append("</font>");
        return strBuf.toString();
    }

    public static String makeHtmlNewLine() {
        return "<br />";
    }

    public static String makeHtmlSpace(int number) {
        final String space = " ";
        StringBuilder result = new StringBuilder();
        for (int i = 0; i < number; i++) {
            result.append(space);
        }
        return result.toString();
    }

    public static String getFriendlyLength(int lenMeter) {
        if (lenMeter > 10000) // 10 km
        {
            int dis = lenMeter / 1000;
            return dis + "";
        }

        if (lenMeter > 1000) {
            float dis = (float) lenMeter / 1000;
            DecimalFormat fnum = new DecimalFormat("##0.0");
            String dstr = fnum.format(dis);
            return dstr;
        }

        if (lenMeter > 100) {
            int dis = lenMeter / 50 * 50;
            return dis + "";
        }

        int dis = lenMeter / 10 * 10;
        if (dis == 0) {
            dis = 10;
        }

        return dis + "";
    }

    public static boolean IsEmptyOrNullString(String s) {
        return (s == null) || (s.trim().length() == 0);
    }

    /**
     * 把LatLng对象转化为LatLonPoint对象
     */
    public static LatLonPoint convertToLatLonPoint(LatLng latlon) {
        return new LatLonPoint(latlon.latitude, latlon.longitude);
    }

    /**
     * 把LatLonPoint对象转化为LatLon对象
     */
    public static LatLng convertToLatLng(LatLonPoint latLonPoint) {
        return new LatLng(latLonPoint.getLatitude(), latLonPoint.getLongitude());
    }

    /**
     * 把集合体的LatLonPoint转化为集合体的LatLng
     */
    public static ArrayList<LatLng> convertArrList(List<LatLonPoint> shapes) {
        ArrayList<LatLng> lineShapes = new ArrayList<LatLng>();
        for (LatLonPoint point : shapes) {
            LatLng latLngTemp = AMapUtil.convertToLatLng(point);
            lineShapes.add(latLngTemp);
        }
        return lineShapes;
    }

    /**
     * long类型时间格式化
     */
    public static String convertToTime(long time) {
        SimpleDateFormat df = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
        Date date = new Date(time);
        return df.format(date);
    }

    public static final String HtmlBlack = "#000000";
    public static final String HtmlGray = "#808080";

    public static String getFriendlyTime(int second) {
        if (second > 3600) {
            int hour = second / 3600;
            int miniate = (second % 3600) / 60;
            return hour + "小时" + miniate + "分钟";
        }
        if (second >= 60) {
            int miniate = second / 60;
            return miniate + "分钟";
        }
        return second + "秒";
    }


    public static String getBusPathTitle(BusPath busPath) {
        if (busPath == null) {
            return String.valueOf("");
        }
        List<BusStep> busSetps = busPath.getSteps();
        if (busSetps == null) {
            return String.valueOf("");
        }
        StringBuffer sb = new StringBuffer();
        for (BusStep busStep : busSetps) {
            if (busStep.getBusLines().size() > 0) {
                RouteBusLineItem busline = busStep.getBusLines().get(0);
                if (busline == null) {
                    continue;
                }
                String buslineName = getSimpleBusLineName(busline.getBusLineName());
                sb.append(buslineName);
                sb.append(" > ");
            }
            if (busStep.getRailway() != null) {
                RouteRailwayItem railway = busStep.getRailway();
                sb.append(railway.getTrip() + "(" + railway.getDeparturestop().getName()
                        + " - " + railway.getArrivalstop().getName() + ")");
                sb.append(" > ");
            }
        }
        return sb.substring(0, sb.length() - 3);
    }

    public static String getBusPathDes(BusPath busPath) {
        if (busPath == null) {
            return String.valueOf("");
        }
        long second = busPath.getDuration();
        String time = getFriendlyTime((int) second);
        float subDistance = busPath.getDistance();
        String subDis = getFriendlyLength((int) subDistance);
        float walkDistance = busPath.getWalkDistance();
        String walkDis = getFriendlyLength((int) walkDistance);
        return String.valueOf(time + " | " + subDis + " | 步行" + walkDis);
    }

    public static String getSimpleBusLineName(String busLineName) {
        if (busLineName == null) {
            return String.valueOf("");
        }
        return busLineName.replaceAll("\\(.*?\\)", "");
    }


}