所以我想从JSON数组的结果中添加不同颜色的路由（每条路由的颜色不同）。阵列看起来像这样，但显然要长得多：
[
{
"lat":44.245254209999999,
"dist":0.0,
"lng":2.0344993799999997,
"speed":0.82999998331069946,
"index":0
},
{
"lat":41.245254209999999,
"dist":0.00051573936104906324,
"lng":2.0344993799999997,
"speed":0.82999998331069946,
"index":100
}
]
可在此处找到一个真实示例： http://pastebin.com/sNiZ8vbQ
我从这样的URL获取此信息：https://s3-us-west-2.amazonaws.com/chffrprivate/comma-25b94166c3ae208c/0bb18eb5e944350a4f52ce3fd4958669_2016-07-25--10-08-07/route.coords每条路由都有自己的URL / route.coords。在过去通过驱动器循环我做了这样的事情：
public class DriveURLAdapter extends ArrayAdapter<Drive> {
public static String DriveURL;
public static long driveSeconds;
public static DateTime startTime;
public static DateTime endTime;
private final Activity context;
// you may need to change List to something else (whatever is returned from drives.entrySet())
private final List<Drive> drives;
SharedPreferences sharedPref;
// may also need to change List here (above comment)
public DriveURLAdapter(Activity context, List<Drive> drives) {
super(context, R.layout.drive_url_list, drives);
this.context = context;
this.drives = drives;
sharedPref = context.getPreferences(Context.MODE_PRIVATE);
}
@Override
public View getView(int position, View view, ViewGroup parent) {
LayoutInflater inflater = context.getLayoutInflater();
View rowView = inflater.inflate(R.layout.drive_url_list, null, true);
Drive drive = this.drives.get(position);
// position is the index of the drives.entrySet() array
int driveNum = position + 1;
// need to import your Route class
Route route = drive.getRoute();
// need to import your URL class
DriveURL = route.getUrl();
startTime = new DateTime(route.getStart_time());
endTime = new DateTime(route.getEnd_time());
driveSeconds = ((endTime.getMillis() - startTime.getMillis())/ 1000);
System.out.println(driveSeconds);
TextView spinnerItems = (TextView) rowView.findViewById(R.id.Spinner_Items);
spinnerItems.setText(String.valueOf(driveNum));
//driveURLList.setText(DriveURL);
return rowView;
}
}
但是，这有一个getView，我没有看到这种情况。到目前为止，我正在努力编写价值观。
public class ThirdFragment extends Fragment implements OnMapReadyCallback {
View myView;
private GoogleMap mMap;
MapFragment mapFrag;
private Polyline line;
private PolylineOptions lineOptions;
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
myView = inflater.inflate(R.layout.third_layout, container, false);
return myView;
}
@Override
public void onViewCreated(View view, Bundle savedInstanceState) {
super.onViewCreated(view, savedInstanceState);
mapFrag = (MapFragment) getChildFragmentManager().findFragmentById(R.id.map);
mapFrag.getMapAsync(this);
//mapFrag.onResume();
}
@Override
public void onMapReady(GoogleMap googleMap) {
mMap = googleMap;
if (ActivityCompat.checkSelfPermission(getActivity(), Manifest.permission.ACCESS_FINE_LOCATION) == PackageManager.PERMISSION_GRANTED || ActivityCompat.checkSelfPermission(getActivity(), Manifest.permission.ACCESS_COARSE_LOCATION) == PackageManager.PERMISSION_GRANTED) {
Criteria criteria = new Criteria();
LocationManager locationManager = (LocationManager)getActivity().getSystemService(Context.LOCATION_SERVICE);
String provider = locationManager.getBestProvider(criteria, false);
Location location = locationManager.getLastKnownLocation(provider);
double lat = location.getLatitude();
double lng = location.getLongitude();
LatLng coordinate = new LatLng(lat, lng);
CameraUpdate yourLocation = CameraUpdateFactory.newLatLngZoom(coordinate, 13);
mMap.animateCamera(yourLocation);
lineOptions = new PolylineOptions()
.add(new LatLng(33.927085040000001, -118.39129683))
.add(new LatLng(33.927085969382027, -118.39129820011991))
.add(new LatLng(33.927081024586677, -118.39130352185116))
.add(new LatLng(33.927077084498386, -118.39130986277655))
.add(new LatLng(33.92707405365519, -118.39131496827862))
.add(new LatLng(33.927066722586623, -118.39131750469446))
.add(new LatLng(33.927068689880947, -118.39131823397425))
.add(new LatLng(33.927068030419839, -118.39131796208994))
.add(new LatLng(33.927065982966624, -118.39132090766913))
.add(new LatLng(33.927065258415212, -118.3913193654964))
.width(20)
.color(Color.RED);
line = mMap.addPolyline(lineOptions);
List<Map.Entry> list = new ArrayList<Map.Entry>();
for (Map.Entry drive : drives.entrySet()) {
list.add(drive);
}
RouteAdapter drivesListAdapter = new RouteAdapter(getActivity(), list);
} else {
final AlertDialog alertDialogGPS = new AlertDialog.Builder(getActivity()).create();
alertDialogGPS.setTitle("Info");
alertDialogGPS.setMessage("Looks like you have not given GPS permissions. Please give GPS permissions and return back to the app.");
alertDialogGPS.setIcon(android.R.drawable.ic_dialog_alert);
alertDialogGPS.setButton("OK", new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog, int which) {
Intent intentSettings = new Intent(Settings.ACTION_APPLICATION_SETTINGS);
startActivity(intentSettings);
alertDialogGPS.dismiss();
}
});
alertDialogGPS.show();
}
}
@Override
public void onResume() {
super.onResume();
if (ActivityCompat.checkSelfPermission(getActivity(), Manifest.permission.ACCESS_FINE_LOCATION) == PackageManager.PERMISSION_GRANTED || ActivityCompat.checkSelfPermission(getActivity(), Manifest.permission.ACCESS_COARSE_LOCATION) == PackageManager.PERMISSION_GRANTED) {
mapFrag.getMapAsync(this);
}
else {
}
}
}
非常感谢任何帮助。
创建RouteAdapter：
public class RouteAdapter extends ArrayAdapter<Map.Entry> {
private final Activity context;
// you may need to change List to something else (whatever is returned from drives.entrySet())
private final List<Map.Entry> drives;
public static String DriveURL;
public static String routeLat;
public static String routeLng;
SharedPreferences sharedPref;
// may also need to change List here (above comment)
public RouteAdapter(Activity context, List<Map.Entry> drives) {
super(context, R.layout.drive_url_list, drives);
this.context = context;
this.drives = drives;
sharedPref = context.getPreferences(Context.MODE_PRIVATE);
}
@Override
public View getView(int position, View view, ViewGroup parent) {
LayoutInflater inflater = context.getLayoutInflater();
View rowView = inflater.inflate(R.layout.third_layout, null, true);
Map.Entry drive = this.drives.get(position);
// position is the index of the drives.entrySet() array
int driveNum = position + 1;
// need to import your Route class
Route route = (Route) drive.getValue();
RouteCoord routeCoord = (RouteCoord) drive.getValue();
routeLat = routeCoord.getLat();
routeLng = routeCoord.getLng();
// need to import your URL class
DriveURL = route.getUrl();
System.out.println(DriveURL+"/route.coords");
return rowView;
}
}