这是我的代码。我想要实现的是，每当用户在editext中输入一个位置时，单击按钮时，像uber（汽车应移动）之类的动画将从硬编码位置添加到用户输入的位置。目前，每当我单击该按钮时，它只会向我显示该硬代码位置。谁能帮忙吗？
public class MapsActivity extends FragmentActivity implements OnMapReadyCallback {
SupportMapFragment mapFragment;
private GoogleMap mMap;
private List<LatLng> polylineList;
private Marker marker;
private float v;
private double lat, lng;
private Handler handler;
private LatLng startposition, endposition;
private int index, next;
private Button btngo;
private EditText editplace;
private String destination;
private PolylineOptions polylineOptions, blackpolylineoptions;
private Polyline blackpolyline, greypolyline;
private LatLng mylocation;
IGoogleApi mservice;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_maps);
// Obtain the SupportMapFragment and get notified when the map is ready to be used.
mapFragment = (SupportMapFragment) getSupportFragmentManager()
.findFragmentById(R.id.map);
//Here begins;
polylineList = new ArrayList<>();
btngo = findViewById(R.id.btnsearch);
editplace = findViewById(R.id.editplace);
btngo.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
destination = editplace.getText().toString();
destination = destination.replace(" ", "+");
mapFragment.getMapAsync(MapsActivity.this);
}
});
mservice = Common.getGoogleApi();
}
@Override
public void onMapReady(GoogleMap googleMap) {
mMap = googleMap;
mMap.setMapType(GoogleMap.MAP_TYPE_NORMAL);
mMap.setTrafficEnabled(false);
mMap.setIndoorEnabled(false);
mMap.setBuildingsEnabled(false);
mMap.getUiSettings().setZoomControlsEnabled(true);
// Add a marker in Sydney and move the camera
final LatLng sydney = new LatLng(28.6753814, 77.1618454);
mMap.addMarker(new MarkerOptions().position(sydney).title("My Location"));
mMap.moveCamera(CameraUpdateFactory.newLatLng(sydney));
mMap.moveCamera(CameraUpdateFactory.newCameraPosition(new CameraPosition.Builder().target(googleMap.
getCameraPosition().target).zoom(17).bearing(30).tilt(45).build()));
String requesturl = null;
try {
requesturl = "https://maps.googleapis.com/maps/api/directions/json?" + "mode=driving&" + "transit_routing_preference" +
"=less_driving&" + "origin=" + sydney.latitude + "," + sydney.longitude + "&destination=" + destination + "&key=" +
getResources().getString(R.string.google_direction_key);
Log.d("URL", requesturl);
mservice.getDatafromGoogleApi(requesturl).enqueue(new Callback<String>() {
@Override
public void onResponse(Call<String> call, Response<String> response) {
try {
JSONObject jsonObject = new JSONObject(response.body().toString());
JSONArray jsonArray = jsonObject.getJSONArray("routes");
for (int i = 0; i < jsonArray.length(); i++) {
JSONObject route = jsonArray.getJSONObject(i);
JSONObject poly = route.getJSONObject("overview_polyline");
String polyline = poly.getString("points");
polylineList = decodePoly(polyline);
}
LatLngBounds.Builder builder = new LatLngBounds.Builder();
for (LatLng latLng : polylineList)
builder.include(latLng);
LatLngBounds bounds = builder.build();
CameraUpdate mcameraUpdate = CameraUpdateFactory.newLatLngBounds(bounds, 2);
mMap.animateCamera(mcameraUpdate);
polylineOptions = new PolylineOptions();
polylineOptions.color(Color.GRAY);
polylineOptions.width(5);
polylineOptions.startCap(new SquareCap());
polylineOptions.endCap(new SquareCap());
polylineOptions.jointType(JointType.ROUND);
polylineOptions.addAll(polylineList);
greypolyline = mMap.addPolyline(polylineOptions);
blackpolylineoptions = new PolylineOptions();
blackpolylineoptions.color(Color.GRAY);
blackpolylineoptions.width(5);
blackpolylineoptions.startCap(new SquareCap());
blackpolylineoptions.endCap(new SquareCap());
blackpolylineoptions.jointType(JointType.ROUND);
blackpolylineoptions.addAll(polylineList);
blackpolyline = mMap.addPolyline(polylineOptions);
mMap.addMarker(new MarkerOptions().position(polylineList.get(polylineList.size() - 1)));
//Animator
final ValueAnimator polylineanimator = ValueAnimator.ofInt(0, 100);
polylineanimator.setDuration(5000);
polylineanimator.setInterpolator(new LinearInterpolator());
polylineanimator.addUpdateListener(new ValueAnimator.AnimatorUpdateListener() {
@Override
public void onAnimationUpdate(ValueAnimator animation) {
List<LatLng> points = greypolyline.getPoints();
int percentvalue = (int) animation.getAnimatedValue();
int size = points.size();
int newpoints = (int) (size * (percentvalue / 100.0f));
List<LatLng> p = points.subList(0, newpoints);
blackpolyline.setPoints(p);
}
});
polylineanimator.start();
marker = mMap.addMarker(new MarkerOptions().position(sydney).flat(true).icon(BitmapDescriptorFactory.fromResource(R.drawable.car)));
//car moving
handler = new Handler();
index = -1;
next = 1;
handler.postDelayed(new Runnable() {
@Override
public void run() {
if (index < polylineList.size() - 1) {
index++;
next = index + 1;
}
if (index < polylineList.size() - 1) {
startposition = polylineList.get(index);
endposition = polylineList.get(next);
}
final ValueAnimator valueAnimator = ValueAnimator.ofFloat(0, 1);
valueAnimator.setDuration(3000);
valueAnimator.setInterpolator(new LinearInterpolator());
valueAnimator.addUpdateListener(new ValueAnimator.AnimatorUpdateListener() {
@Override
public void onAnimationUpdate(ValueAnimator animation) {
/*List<LatLng> points = greypolyline.getPoints();
int percentvalue = (int) animation.getAnimatedValue();
int size = points.size();
int newpoints = (int) (size * (percentvalue / 100.0f));
List<LatLng> p = points.subList(0, newpoints);
blackpolyline.setPoints(p);*/
v = valueAnimator.getAnimatedFraction();
lng = v * endposition.longitude + (1 - v) * startposition.longitude;
lat = v * endposition.latitude + (1 - v) * startposition.latitude;
LatLng newPos = new LatLng(lat, lng);
marker.setPosition(newPos);
marker.setAnchor(0.5f, 0.5f);
marker.setRotation(getBearing(startposition, newPos));
mMap.moveCamera(CameraUpdateFactory.newCameraPosition(new CameraPosition.Builder()
.target(newPos).zoom(15.5f).build()));
}
});
valueAnimator.start();
handler.postDelayed(this, 3000);
}
}, 3000);
} catch (Exception e) {
e.printStackTrace();
}
}
@Override
public void onFailure(Call<String> call, Throwable t) {
Toast.makeText(MapsActivity.this, t.getMessage(), Toast.LENGTH_SHORT).show();
}
});
} catch (Exception e) {
e.printStackTrace();
}
}
private float getBearing(LatLng startposition, LatLng newPos) {
double lat = Math.abs(startposition.latitude - newPos.latitude);
double lng = Math.abs(startposition.longitude - newPos.longitude);
if (startposition.latitude < newPos.latitude && startposition.longitude < newPos.longitude) {
return (float) (Math.toDegrees(Math.atan(lng / lat)));
} else if (startposition.latitude >= newPos.latitude && startposition.longitude < newPos.longitude) {
return (float) ((90 - Math.toDegrees(Math.atan(lng / lat))) + 90);
} else if (startposition.latitude >= newPos.latitude && startposition.longitude >= newPos.longitude) {
return (float) (Math.toDegrees(Math.atan(lng / lat)) + 180);
} else if (startposition.latitude < newPos.latitude && startposition.longitude >= newPos.longitude) {
return (float) ((90 - Math.toDegrees(Math.atan(lng / lat))) + 270);
}
return -1;
}
private List<LatLng> decodePoly(String encoded) {
List poly = new ArrayList();
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;
LatLng p = new LatLng((((double) lat / 1E5)),
(((double) lng / 1E5)));
poly.add(p);
}
return poly;
}
}