首先需要判断手机上是否已经安装了对应的地图导航APP

        // 判断是否安装指定app
        public static bool IsInstallApp(Context context, string app_package)
        {
            PackageManager pm = context.PackageManager;

            bool installed = false;
            try
            {
                pm.GetPackageInfo(PACKAGE_WECHAT, PackageInfoFlags.Activities);
                installed = true;

            }
            catch (Exception e)
            {
                installed = false;
            }
            return installed;
        }

打开百度地图代码如下

        /// <summary>
        /// 打开百度地图
        /// </summary>
        /// <returns></returns>
        public static bool OpenBaiduMap()
        {
            Context context = global::Android.App.Application.Context;

            //传入指定应用包名  
            if (IsInstallApp(context, "com.baidu.BaiduMap"))
            {
                double longitude = 120.090546;//经度
                double latitude = 30.430953;//维度
                try
                {
                    //intent = Intent.getIntent("intent://map/direction?origin=latlng:34.264642646862,108.95108518068|name:我家&destination=大雁塔&mode=driving®ion=西安&src=yourCompanyName|yourAppName#Intent;scheme=bdapp;package=com.baidu.BaiduMap;end");  
                    Intent intent = Intent.GetIntent("intent://map/direction?" +
                            //"origin=latlng:"+"34.264642646862,108.95108518068&" +   //起点  此处不传值默认选择当前位置
                            "destination=latlng:" + latitude + "," + longitude + "|name:我的目的地" +        //终点
                            "&mode=driving&" +          //导航路线方式
                            "region=杭州" +           //
                            "&src=我的App#Intent;scheme=bdapp;package=com.baidu.BaiduMap;end");
                    intent.SetFlags(ActivityFlags.NewTask);
                    context.StartActivity(intent); //启动调用  

                    return true;
                }
                catch (URISyntaxException e)
                {
                    return false;
                    //Log.e("intent", e.getMessage());
                }
            }
            else
            {
                //未安装  
                return false;
            }
        }

打开高德地图代码如下

/// <summary>
/// 打开高德地图
/// </summary>
/// <returns></returns>
public static bool OpenGaoDeMap()
{
    Context context = global::Android.App.Application.Context;
    if (IsInstallApp(context, "com.autonavi.minimap"))
    {
        double longitude = 120.090546;//经度
        double latitude = 30.430953;//维度
        try
        {
            Intent intent = Intent.GetIntent("androidamap://navi?sourceApplication=我的App&poiname=我的目的地&lat=" + latitude + "&lon=" + longitude + "&dev=0");
                                intent.SetFlags(ActivityFlags.NewTask);
            context.StartActivity(intent);
            return true;
        }
        catch (URISyntaxException e)
        {
            return false;
            //e.printStackTrace(); 
        }
    }
    else
    {
        return false;
    }
}

打开腾讯地图代码如下

/// <summary>
        /// 打开腾讯地图
        /// </summary>
        /// <param name="latitude"></param>
        /// <param name="longitude"></param>
        /// <param name="address"></param>
        /// <returns></returns>
        public DataResult OpenTententMap(double latitude, double longitude, string address)
        {
            if (latitude == 0 || longitude == 0)
            {
                return DataProcess.Error("经纬度数据异常");
            }

            if (address.IsMissing())
            {
                address = "我的目的地";
            }
            
            Context context = global::Android.App.Application.Context;
            //double longitude = 120.090546;//经度
            //double latitude = 30.430953;//维度
            try
            {
                //qqmap://map/routeplan?type=drive&from=清华&fromcoord=39.994745,116.247282&to=怡和世家&tocoord=39.867192,116.493187&referer=OB4BZ-D4W3U-B7VVO-4PJWW-6TKDJ-WPB77
                StringBuilder driveLine = new StringBuilder("qqmap://map/routeplan?type=drive");
                //driveLine.Append("&from=清华");
                //driveLine.AppendFormat("&fromcoord=39.994745,116.247282");
                driveLine.AppendFormat("&to={0}", address);
                driveLine.AppendFormat("&tocoord={0},{1}", latitude, longitude);
                driveLine.Append("&referer=OB4BZ-D4W3U-B7VVO-4PJWW-6TKDJ-WPB77");
                Intent intent = Intent.GetIntent(driveLine.ToString());
                intent.SetFlags(ActivityFlags.NewTask);
                context.StartActivity(intent);
                return DataProcess.Success();
            }
            catch (URISyntaxException e)
            {
                return DataProcess.Error(e.Message);
                //e.printStackTrace(); 
            }
        }

注意：AndroId需要增加配置参数

打开/Platforms/Android下的AndroidManifest.xml文件

添加以下配置，package节点下需要拉起的App程序包名称，如果不添加，那么无法判断对应app是否已安装

<queries>
		<package android:name="com.tencent.mm"/>
		<package android:name="com.baidu.BaiduMap"/>
		<package android:name="com.autonavi.minimap"/>
		<package android:name="com.tencent.map"/>
	</queries>