我正在开发一个应用程序，因为我可以显示源和目的地之间的路线并显示有关该路线的一些描述。现在我正在尝试将该描述下载到我的手机中。我是这样搜索的，但我没有找到任何相关的例子。请为此分享任何示例
我的代码
private class GetRouteTask extends AsyncTask<String, Void, String>{
private ProgressDialog pDialog;
String response="";
private WeakReference<ShowRoutesInMap> weakRef;
//public ArrayList<String> alter;
public ArrayList<String> route1;
public ArrayList<String> route2;
public ArrayList<String> route3;
PolylineOptions rectLine = null;
PolylineOptions rectLine1 = null;
PolylineOptions rectLine2 = null;
PolylineOptions rectLine3 = null;
public ArrayList<LatLng> directionPoint;
private ArrayList<String> alter;
public GetRouteTask(ShowRoutesInMap context){
this.weakRef =new WeakReference<ShowRoutesInMap>(context);
}
@Override
protected void onPreExecute() {
// TODO Auto-generated method stub
super.onPreExecute();
pDialog = new ProgressDialog(ShowRoutesInMap.this);
if(!isFinishing()){
pDialog.setMessage("Please wait For TrafficJam Route...");
pDialog.setCancelable(false);
pDialog.show();
}
}
@Override
protected String doInBackground(String... params) {
// TODO Auto-generated method stub
try{
if(sourcePosition!=null && destinationPostion!=null){
document = v2GetRouteDirection.getDocument(sourcePosition, destinationPostion,GMapV2Direction.MODE_DRIVING);
}
}
catch(Exception e){
return "exception caught";
}
response = "Success";
return response;
}
@Override
protected void onPostExecute(String result) {
// TODO Auto-generated method stub
super.onPostExecute(result);
// if(!isFinishing()){
pDialog.dismiss();
// }
route1 = new ArrayList<String>();
route2 = new ArrayList<String>();
route3 = new ArrayList<String>();
if(result.equalsIgnoreCase("exception caught")){
Toast.makeText(getApplicationContext(), "INVALID VALUES", Toast.LENGTH_LONG).show();
}
else{
if (weakRef.get() != null && ! weakRef.get().isFinishing()){
// if(response.equalsIgnoreCase("Success")){
alter = v2GetRouteDirection.getAlternativeRoutes(document);
int duration = v2GetRouteDirection.getDurationValue(document);
Log.e("TRAFFIC DURATIONTIME",""+duration);
int trfficClearTime = v2GetRouteDirection.getDistanceValue(document);
Log.e("TRAFFIC TIME", ""+trfficClearTime);
for( j=0;j<alter.size();j++){
directionPoint =v2GetRouteDirection.getDirection(document, j);
ArrayList<String> desc = v2GetRouteDirection.getDescription(document,j);
if(j==0){
for(int l=0;l<desc.size();l++){
route1.add(desc.get(l));
Log.e("ROUTE1", desc.get(l).replace("\\<.*?>",""));
}
}
else if(j==1){
for(int l=0;l<desc.size();l++){
route2.add(desc.get(l));
Log.e("ROTE2", desc.get(l).replace("\\<.*?>",""));
}
}
else if(j==2){
for(int l=0;l<desc.size();l++){
route3.add(desc.get(l));
Log.e("ROTE2", desc.get(l).replace("\\<.*?>",""));
}
}
rectLine = new PolylineOptions().width(5).color(Color.RED).geodesic(true);
for (int i = 0; i < directionPoint.size(); i++) {
rectLine.add(directionPoint.get(i));
}
googleMap.addPolyline(rectLine);
getMarkersOnMap(googleMap);
alterRoutes1.setText("");
if(alter.size()==1){
alterRoutes1.setText(alter.get(0));
}
else if(alter.size()>=1 && alter.size()<=2){
alterRoutes1.setText(alter.get(0));
alterRoutes2.setText(alter.get(1));
}
else if(alter.size()>=1 && alter.size()<=3){
alterRoutes1.setText(alter.get(0));
alterRoutes2.setText(alter.get(1));
alterRoutes3.setText(alter.get(2));
}
}
}
alterRoutes1.setOnClickListener(new OnClickListener() {
private ArrayList<LatLng> directionPoint1;
@Override
public void onClick(View v) { // TODO Auto-generated method stub
googleMap.clear();
// ArrayList<String> alter = v2GetRouteDirection.getAlternativeRoutes(document);
rectLine1 = new PolylineOptions().width(5).color(Color.GREEN).geodesic(true);
for( int k=0;k<alter.size();k++){
directionPoint1 =v2GetRouteDirection.getDirection(document, k);
for (int i = 0; i < directionPoint1.size(); i++) {
if(k==0){
rectLine1.add(directionPoint1.get(i));
}
}
googleMap.addPolyline(rectLine1);
getMarkersOnMap(googleMap);
}
for(int i=0;i<route1.size();i++){
showDirection.append(route1.get(i).replaceAll("\\<.*?>",""));
}
}
});
alterRoutes2.setOnClickListener(new OnClickListener() {
private ArrayList<LatLng> directionPoint2;
@Override
public void onClick(View v) {
// TODO Auto-generated method stub
googleMap.clear();
showDirection.setText("");
rectLine2 = new PolylineOptions().width(5).color(Color.MAGENTA).geodesic(true);
for( int k=0;k<alter.size();k++){
directionPoint2 =v2GetRouteDirection.getDirection(document, k);
for (int i = 0; i < directionPoint2.size(); i++) {
if(k==1){
rectLine2.add(directionPoint2.get(i));
}
}
googleMap.addPolyline(rectLine2);
getMarkersOnMap(googleMap);
}
for(int i=0;i<route2.size();i++){
showDirection.append(route2.get(i).replaceAll("\\<.*?>",""));
}
}
});
alterRoutes3.setOnClickListener(new OnClickListener() {
private ArrayList<LatLng> directionPoint3;
int count=0;
@Override
public void onClick(View v) {
// TODO Auto-generated method stub
googleMap.clear();
showDirection.setText("");
rectLine3 = new
PolylineOptions().width(5).color(Color.BLUE).geodesic(true);
for( int k=0;k<alter.size();k++){
directionPoint3
=v2GetRouteDirection.getDirection(document, k);
for (int i = 0; i < directionPoint3.size(); i++) {
if(k==2){
rectLine3.add(directionPoint3.get(i));
}
}
googleMap.addPolyline(rectLine3);
getMarkersOnMap(googleMap);
}
for(int i=0;i<route3.size();i++){
showDirection.append(""+ ++count);
showDirection.append(route3.get(i).replaceAll("\\<.*?
>",""));
}
}
});
}
}
}
public void getMarkersOnMap(GoogleMap gmap){
Markeropition1.position(sourcePosition).icon(BitmapDescriptorFactory
.defaultMarker(BitmapDescriptorFactory.HUE_AZURE))
.flat(true);
Markeropition2.position(destinationPostion).icon(BitmapDescriptorFactory
.defaultMarker(BitmapDescriptorFactory.HUE_AZURE))
.flat(true);
Markeropition1.draggable(true);
Markeropition2.draggable(true);
gmap.moveCamera(CameraUpdateFactory.newLatLngZoom(sourcePosition,10));
gmap.addMarker(Markeropition1);
gmap.addMarker(Markeropition2);
}
最佳答案
可以从 Api 级别 19 在 android 中生成 pdf 文档。您可以引用此链接 http://developer.android.com/reference/android/graphics/pdf/package-summary.html
关于android - 如何在android中将内容下载为pdf文件？，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/22853477/