Java 用于显示不工作的驾驶路线的Android项目

Java 用于显示不工作的驾驶路线的Android项目,java,android,google-maps,driving-directions,Java,Android,Google Maps,Driving Directions,根据本教程,我正在开发一个android应用程序,用于显示两点之间的驾驶路线- ,但我的应用程序在运行后停止。 我不使用kml,因为我知道谷歌不再支持kml。 但是,当我运行这段代码时,它停止了。 谁能告诉我,原因是什么 编辑结果表明,我的androidmanfest.xml中没有包含谷歌地图库。 现在,它没有显示任何错误,但在手机上安装后,它崩溃了。 谁能告诉我,为什么 谢谢 路线路径主要活动 public class RoutePath extends MapActivity {

根据本教程,我正在开发一个android应用程序,用于显示两点之间的驾驶路线- ,但我的应用程序在运行后停止。 我不使用kml,因为我知道谷歌不再支持kml。 但是,当我运行这段代码时,它停止了。 谁能告诉我,原因是什么

编辑结果表明,我的androidmanfest.xml中没有包含谷歌地图库。 现在,它没有显示任何错误,但在手机上安装后,它崩溃了。 谁能告诉我,为什么

谢谢

路线路径主要活动

public class RoutePath extends MapActivity { 

        MapView mapView;
        private RoutePath _activity;
        GeoPoint srcGeoPoint,destGeoPoint;
        private static List<Overlay> mOverlays;

        @Override
        public void onCreate(Bundle savedInstanceState) { 
            super.onCreate(savedInstanceState);
            SharedData data = SharedData.getInstance();
            mapView = new MapView(this,data.getAPIKEY());
            mapView.setClickable(true);        
            setContentView(mapView); 
            _activity = this;
            double src_lat = data.getSrc_lat();
            double src_long = data.getSrc_lng();
            double dest_lat = data.getDest_lat();
            double dest_long = data.getDest_lng();


            if(src_lat == -1 || src_long == -1 || dest_lat == -1 || dest_long == -1){
                showAlert("Please enter source and destination points");
            }else{

                srcGeoPoint = new GeoPoint((int) (src_lat * 1E6),(int) (src_long * 1E6)); 
                destGeoPoint = new GeoPoint((int) (dest_lat * 1E6),(int) (dest_long * 1E6)); 

                List<Overlay> mapOverlays = mapView.getOverlays();
                Drawable srcdrawable = this.getResources().getDrawable(R.drawable.pin_green);
                CustomItemizedOverlay srcitemizedOverlay = new CustomItemizedOverlay(srcdrawable);
                //CustomItemizedOverlay srcitemizedOverlay = new CustomItemizedOverlay(getDrawable("com/agarwal/route/pin_green.png"));
                OverlayItem srcoverlayitem = new OverlayItem(srcGeoPoint, "Hello!", "This is your Location.");

                Drawable destdrawable = this.getResources().getDrawable(R.drawable.pin_red);
                CustomItemizedOverlay  destitemizedOverlay = new CustomItemizedOverlay( destdrawable );
               // CustomItemizedOverlay destitemizedOverlay = new CustomItemizedOverlay(getDrawable("com/agarwal/route/pin_red.png"));
                OverlayItem destoverlayitem = new OverlayItem(destGeoPoint, "Hello!", "This is dest Location.");

                srcitemizedOverlay.addOverlay(srcoverlayitem);
                destitemizedOverlay.addOverlay(destoverlayitem);

                mapOverlays.add(srcitemizedOverlay);
                mapOverlays.add(destitemizedOverlay);

                connectAsyncTask _connectAsyncTask = new connectAsyncTask();
                _connectAsyncTask.execute();        
                mapView.setBuiltInZoomControls(true);
                mapView.displayZoomControls(true);
                mOverlays = mapView.getOverlays();
                mapView.getController().animateTo(srcGeoPoint); 
                mapView.getController().setZoom(12); 
                //SharedData data = SharedData.getInstance();
                data.setAPIKEY("APIKEY");
                data.setSrc_lat(17);
                data.setSrc_lng(78);
                data.setDest_lat(18);
                data.setDest_lng(77);
                startActivity(new Intent(RoutePath.this,RoutePath.class));

            } 
        }
        @Override 
        protected boolean isRouteDisplayed() { 
            // TODO Auto-generated method stub 
            return false; 
        } 

        private class connectAsyncTask extends AsyncTask<Void, Void, Void>{
            private ProgressDialog progressDialog;
            @Override
            protected void onPreExecute() {
                // TODO Auto-generated method stub
                super.onPreExecute();
                progressDialog = new ProgressDialog(_activity);
                progressDialog.setMessage("Fetching route, Please wait...");
                progressDialog.setIndeterminate(true);
                progressDialog.show();
            }
            @Override
            protected Void doInBackground(Void... params) {
                // TODO Auto-generated method stub
                fetchData();
                return null;
            }
            @Override
            protected void onPostExecute(Void result) {
                // TODO Auto-generated method stub
                super.onPostExecute(result);            
                if(doc!=null){
                    Overlay ol = new MyOverlay(_activity,srcGeoPoint,srcGeoPoint,1);
                    mOverlays.add(ol);
                    NodeList _nodelist = doc.getElementsByTagName("status");
                    Node node1 = _nodelist.item(0);
                    String _status1  = node1.getChildNodes().item(0).getNodeValue();
                    if(_status1.equalsIgnoreCase("OK")){
                        NodeList _nodelist_path = doc.getElementsByTagName("overview_polyline");
                        Node node_path = _nodelist_path.item(0);
                        Element _status_path = (Element)node_path;
                        NodeList _nodelist_destination_path = _status_path.getElementsByTagName("points");
                        Node _nodelist_dest = _nodelist_destination_path.item(0);
                        String _path  = _nodelist_dest.getChildNodes().item(0).getNodeValue();
                        List<GeoPoint> _geopoints = decodePoly(_path);
                        GeoPoint gp1; 
                        GeoPoint gp2; 
                        gp2 = _geopoints.get(0);
                        Log.d("_geopoints","::"+_geopoints.size());
                        for(int i=1;i<_geopoints.size();i++) // the last one would be crash 
                        { 

                            gp1 = gp2;
                            gp2 = _geopoints.get(i);
                            Overlay ol1 = new MyOverlay(gp1,gp2,2,Color.BLUE);
                            mOverlays.add(ol1);
                        } 
                        Overlay ol2 = new MyOverlay(_activity,destGeoPoint,destGeoPoint,3);
                        mOverlays.add(ol2);

                        progressDialog.dismiss();
                    }else{
                        showAlert("Unable to find the route");
                    }

                    Overlay ol2 = new MyOverlay(_activity,destGeoPoint,destGeoPoint,3);
                    mOverlays.add(ol2);
                    progressDialog.dismiss();
                    mapView.scrollBy(-1,-1);
                    mapView.scrollBy(1,1);
                }else{
                    showAlert("Unable to find the route");
                }

            }

        }
        Document doc = null;
        private void fetchData()
        {
            StringBuilder urlString = new StringBuilder();
            urlString.append("http://maps.google.com/maps/api/directions/xml?origin=");
            urlString.append( Double.toString((double)srcGeoPoint.getLatitudeE6()/1.0E6 )); 
            urlString.append(","); 
            urlString.append( Double.toString((double)srcGeoPoint.getLongitudeE6()/1.0E6 )); 
            urlString.append("&destination=");//to 
            urlString.append( Double.toString((double)destGeoPoint.getLatitudeE6()/1.0E6 )); 
            urlString.append(","); 
            urlString.append( Double.toString((double)destGeoPoint.getLongitudeE6()/1.0E6 )); 
            urlString.append("&sensor=true&mode=driving");     
            Log.d("url","::"+urlString.toString());
            HttpURLConnection urlConnection= null; 
            URL url = null; 
            try 
            { 
                url = new URL(urlString.toString()); 
                urlConnection=(HttpURLConnection)url.openConnection(); 
                urlConnection.setRequestMethod("GET"); 
                urlConnection.setDoOutput(true); 
                urlConnection.setDoInput(true); 
                urlConnection.connect(); 
                DocumentBuilderFactory dbf = DocumentBuilderFactory.newInstance(); 
                DocumentBuilder db = dbf.newDocumentBuilder();
                doc = (Document) db.parse(urlConnection.getInputStream());//Util.XMLfromString(response);
            }catch (MalformedURLException e){ 
                e.printStackTrace(); 
            }catch (IOException e){ 
                e.printStackTrace(); 
            }catch (ParserConfigurationException e){ 
                e.printStackTrace(); 
            }
            catch (SAXException e) {
                // TODO Auto-generated catch block
                e.printStackTrace();
            }
        }
        private List<GeoPoint> decodePoly(String encoded) {

            List<GeoPoint> poly = new ArrayList<GeoPoint>();
            int index = 0, len = encoded.length();
            int lat = 0, lng = 0;

            while (index < len) {
                int b, shift = 0, result = 0;
                do {
                    b = encoded.charAt(index++) - 63;
                    result |= (b & 0x1f) << shift;
                    shift += 5;
                } while (b >= 0x20);
                int dlat = ((result & 1) != 0 ? ~(result >> 1) : (result >> 1));
                lat += dlat;

                shift = 0;
                result = 0;
                do {
                    b = encoded.charAt(index++) - 63;
                    result |= (b & 0x1f) << shift;
                    shift += 5;
                } while (b >= 0x20);
                int dlng = ((result & 1) != 0 ? ~(result >> 1) : (result >> 1));
                lng += dlng;

                GeoPoint p = new GeoPoint((int) (((double) lat / 1E5) * 1E6),
                        (int) (((double) lng / 1E5) * 1E6));
                poly.add(p);
            }

            return poly;
        }
        private void showAlert(String message){
            AlertDialog.Builder alert = new AlertDialog.Builder(_activity);
            alert.setTitle("Error");
            alert.setCancelable(false);
            alert.setMessage(message);
            alert.setPositiveButton("Ok",new DialogInterface.OnClickListener() {
                public void onClick(DialogInterface dialog, int which) {
                    // TODO Auto-generated method stub

                }
            });
            alert.show();
        }
        private Drawable getDrawable(String fileName){
            return Drawable.createFromStream(_activity.getClass().getClassLoader().getResourceAsStream(fileName), "pin");
        }

    }
公共类RoutePath扩展了MapActivity{
地图视图;
私人路线路径活动;
地质点SRCEOPENT,DESTGEOPENT;
私有静态列表移动列表;
@凌驾
创建时的公共void(Bundle savedInstanceState){
super.onCreate(savedInstanceState);
SharedData=SharedData.getInstance();
mapView=新的mapView(这个,data.getAPIKEY());
mapView.setClickable(真);
setContentView(地图视图);
_活动=此;
double src_lat=data.getSrc_lat();
double src_long=data.getSrc_lng();
double dest_lat=data.getDest_lat();
double dest_long=data.getDest_lng();
如果(src|u lat==-1 | | src|u long==-1 | | dest|u lat==-1 | | dest|u long==-1){
showAlert(“请输入源点和目标点”);
}否则{
srcGeoPoint=新的地质点((int)(src_lat*1E6),(int)(src_long*1E6));
dest GeoPoint=新的地质点((int)(dest_lat*1E6),(int)(dest_long*1E6));
List mapOverlays=mapView.getOverlays();
Drawable srcdawable=this.getResources().getDrawable(R.Drawable.pin_绿色);
CustomItemizedOverlay srcitemizedOverlay=新的CustomItemizedOverlay(srcdrawable);
//CustomItemizedOverlay srciitemizedoverlay=新的CustomItemizedOverlay(getDrawable(“com/agarwal/route/pin_green.png”);
OverlayItem srcoverlayitem=新的OverlayItem(srcGeoPoint,“您好!”,“这是您的位置”);
Drawable destdrawable=this.getResources().getDrawable(R.Drawable.pin_red);
CustomItemizedOverlay destinitemizedoverlay=新的CustomItemizedOverlay(destdravable);
//CustomItemizedOverlay destinitemizedoverlay=新的CustomItemizedOverlay(getDrawable(“com/agarwal/route/pin_red.png”);
OverlayItem destoverlayitem=新的OverlayItem(destGeoPoint,“你好!”,“这是dest位置”);
srcitemizedOverlay.addOverlay(srcoverlayitem);
desttemizedoverlay.addOverlay(destoverlayitem);
添加(srcitemizedOverlay);
mapOverlays.add(目标化覆盖);
connectAsyncTask_connectAsyncTask=新建connectAsyncTask();
_connectAsyncTask.execute();
mapView.SetBuilTinZoomControl(真);
mapView.DisplayZoomControl(真);
mOverlays=mapView.getOverlays();
mapView.getController().animateTo(srcGeoPoint);
mapView.getController().setZoom(12);
//SharedData=SharedData.getInstance();
数据。setAPIKEY(“APIKEY”);
数据集(17);
数据集:液化天然气(78);
数据集(18);
数据。设置目的地液化天然气(77);
startActivity(新意图(RoutePath.this,RoutePath.class));
} 
}
@凌驾
受保护的布尔值isRouteDisplayed(){
//TODO自动生成的方法存根
返回false;
} 
私有类connectAsyncTask扩展了AsyncTask{
私有进程对话;
@凌驾
受保护的void onPreExecute(){
//TODO自动生成的方法存根
super.onPreExecute();
progressDialog=新建progressDialog(_活动);
setMessage(“正在提取路径,请稍候…”);
progressDialog.setUndeterminate(true);
progressDialog.show();
}
@凌驾
受保护的Void doInBackground(Void…参数){
//TODO自动生成的方法存根
fetchData();
返回null;
}
@凌驾
受保护的void onPostExecute(void结果){
//TODO自动生成的方法存根
super.onPostExecute(结果);
如果(doc!=null){
叠加ol=新的MyOverlay(_活动,srcGeoPoint,srcGeoPoint,1);
添加(ol);
NodeList _NodeList=doc.getElementsByTagName(“状态”);
Node node1=_nodelist.item(0);
字符串_status1=node1.getChildNodes().item(0.getNodeValue();
如果(_status1.equalsIgnoreCase(“OK”)){
NodeList_NodeList_path=doc.getElementsByTagName(“概述”多段线);
节点路径=\u节点列表路径。项(0);
元素状态路径=(元素)节点路径;
NodeList\u NodeList\u destination\u path=\u status\u path.getElementsByTagName(“点”);
Node\u nodelist\u dest=\u nodelist\u destination\u path.item(0);
字符串_path=_nodelist_dest.getChildNodes().item(0.getNodeValue();
列表_地质点=解码多边形(_路径);
地质点gp1;
地质点gp2;
gp2=_地质点。获取(0);
Log.d(“_geopoints”,”:“+_geopoints.size());
对于(inti=1;i>1):(结果
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
        xmlns:tools="http://schemas.android.com/tools"
        android:layout_width="match_parent"
        android:layout_height="match_parent" >

        <com.google.android.maps.MapView
     android:id="@+id/mapid"
     android:layout_width="fill_parent"
     android:layout_height="fill_parent"
     android:enabled="true"
     android:clickable="true"
     android:apiKey="APIKEY"
     />
        <TextView
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_centerHorizontal="true"
            android:layout_centerVertical="true"
            android:text="@string/hello_world"
            tools:context=".RoutePath" />

    </RelativeLayout>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
        package="com.example.path"
        android:versionCode="1"
        android:versionName="1.0" >

        <uses-sdk
            android:minSdkVersion="8"
            android:targetSdkVersion="15" />

        <application
            android:icon="@drawable/ic_launcher"
            android:label="@string/app_name"
            android:theme="@style/AppTheme" >
            <uses-library android:name="com.google.android.maps"/>
            <activity
                android:name=".RoutePath"
                android:label="@string/title_activity_path" >
                <intent-filter>
                    <action android:name="android.intent.action.MAIN" />

                    <category android:name="android.intent.category.LAUNCHER" />
                </intent-filter>
            </activity>
        </application>
        <uses-permission android:name="android.permission.ACCESS_FINE_LOCATION"></uses-permission>
        <uses-permission android:name="android.permission.ACCESS_COARSE_LOCATION"></uses-permission>
        <uses-permission android:name="android.permission.ACCESS_NETWORK_STATE"/>
        <uses-permission android:name="android.permission.INTERNET"></uses-permission>

    </manifest>