我有下面的代码用于显示包含当前位置和我的位置按钮的地图，但
我的位置按钮没有出现，我的位置没有出现!! 我认为代码安排有一些问题。 但我没有找到原因。
import android.*;
import android.Manifest;
import android.app.Activity;
import android.app.AlertDialog;
import android.content.Context;
import android.content.DialogInterface;
import android.content.Intent;
import android.content.pm.PackageManager;
import android.location.Criteria;
import android.location.Geocoder;
import android.location.Location;
import android.location.LocationListener;
import android.location.LocationManager;
import android.net.ConnectivityManager;
import android.net.NetworkInfo;
import android.net.Uri;
import android.os.Bundle;
import android.provider.Settings;
import android.support.v4.app.ActivityCompat;
import android.support.v4.app.FragmentActivity;
import android.util.Log;
import android.util.TypedValue;
import android.view.View;
import android.widget.AdapterView;
import android.widget.ArrayAdapter;
import android.widget.Button;
import android.widget.LinearLayout;
import android.widget.RelativeLayout;
import android.widget.Spinner;
import android.widget.TextView;
import android.widget.Toast;
import com.android.volley.DefaultRetryPolicy;
import com.android.volley.Request;
import com.android.volley.RequestQueue;
import com.android.volley.Response;
import com.android.volley.VolleyError;
import com.android.volley.toolbox.StringRequest;
import com.google.android.gms.common.ConnectionResult;
import com.google.android.gms.common.GooglePlayServicesNotAvailableException;
import com.google.android.gms.common.api.GoogleApiClient;
import com.google.android.gms.location.LocationServices;
import com.google.android.gms.maps.CameraUpdate;
import com.google.android.gms.maps.CameraUpdateFactory;
import com.google.android.gms.maps.GoogleMap;
import com.google.android.gms.maps.MapFragment;
import com.google.android.gms.maps.MapsInitializer;
import com.google.android.gms.maps.OnMapReadyCallback;
import com.google.android.gms.maps.SupportMapFragment;
import com.google.android.gms.maps.model.BitmapDescriptorFactory;
import com.google.android.gms.maps.model.CameraPosition;
import com.google.android.gms.maps.model.LatLng;
import com.google.android.gms.maps.model.Marker;
import com.google.android.gms.maps.model.MarkerOptions;
import com.wneet.white.ModelsClientInfo.Address;
import org.json.JSONArray;
import org.json.JSONException;
import org.json.JSONObject;
import java.io.IOException;
import java.util.ArrayList;
import java.util.List;
import java.util.Locale;
import java.util.concurrent.ExecutionException;
import cn.pedant.SweetAlert.SweetAlertDialog;
public class select_position extends RunTimePermisions implements GoogleApiClient.ConnectionCallbacks,
GoogleApiClient.OnConnectionFailedListener,
GoogleMap.OnInfoWindowClickListener,
GoogleMap.OnMapClickListener,
GoogleMap.OnMarkerClickListener {
private static final int REQUEST_PERMISSIONS = 20;
Double USER_LATITUDE;
Double USER_LONGITUDE;
protected Context context;
private GoogleMap googleMap;
private GoogleApiClient mGoogleApiClient;
private Location mCurrentLocation;
Marker marker, markerStartpoint, markerEndpoint;
boolean gps_enabled = false;
boolean network_enabled = false;
Spinner chooseAddresses;
Button select_position;
Address currentAddress;
Geocoder geocoder;
TextView startPoint, endPoint;
int service_type;
RelativeLayout StartPointLayout, EndPointLayout;
boolean isStartPointClicked ;
LatLng StartValue,EndValue;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.select_position);
select_position.super.requestAppPermissions(new
String[]{Manifest.permission.ACCESS_FINE_LOCATION,
Manifest.permission.CONTROL_LOCATION_UPDATES}, R.string
.runtime_permissions_txt
, REQUEST_PERMISSIONS);
Button back_btn = (Button) findViewById(R.id.back);
back_btn.setOnClickListener(new View.OnClickListener() {
public void onClick(View v) {
// Perform action on click
finish();
}
});
//get info from preveous activity
final Intent service_intent = getIntent();
// WhiteModel x = (WhiteModel) addresses_intent.getSerializableExtra("Service_Type");
WhiteModel model = (WhiteModel) service_intent.getSerializableExtra("service_Model");
final String service_id = model.getService_id();
Log.e("serviceId position", service_id + "");
final Double cost = model.getCost();
Log.e("cost position", cost + "");
final String user_id = getIntent().getStringExtra("user_id");
Log.e("user id position", user_id + "");
final String token = getIntent().getStringExtra("token");
final String title = model.getTitle();
Log.e("title position", title + "");
final String details = model.getDetails();
Log.e("details position", details + "");
service_type = model.getService_type();
Log.e("serviceType select pos.", service_type + "");
select_position = (Button) findViewById(R.id.select_position);
select_position.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
Intent intent_data = new Intent(select_position.this, order_Summary.class);
intent_data.putExtra("user_latitude", USER_LATITUDE);
Log.e(" user_latitude", USER_LATITUDE + "");
intent_data.putExtra("user_longitude", USER_LONGITUDE);
Log.e(" user_longitude", USER_LONGITUDE + "");
intent_data.putExtra("token", token);
Log.e("token position ", token + "");
intent_data.putExtra("user_id", user_id);
intent_data.putExtra("service_id", service_id);
Log.e("serviceId po ", service_id + "");
intent_data.putExtra("title", title);
intent_data.putExtra("cost", cost);
intent_data.putExtra("details", details);
}
if((StartValue!=null) && (EndValue !=null)) {
intent_data.putExtra("StartValue lat", StartValue.latitude);
intent_data.putExtra("StartValue lng", StartValue.longitude);
intent_data.putExtra("EndValue lat", EndValue.latitude);
intent_data.putExtra("EndValue lng", EndValue.longitude);
startActivity(intent_data);
}
else
startActivity(intent_data);
}
});
try {
initilizeMap();
} catch (Exception e) {
e.printStackTrace();
}
MapsInitializer.initialize(getApplicationContext());
}
@Override
public void onPermissionsGranted(int requestCode) {
Toast.makeText(this, "Permissions Received.", Toast.LENGTH_LONG).show();
}
private void initilizeMap() {
try {
if (googleMap == null) {
MapFragment mapFragment = (MapFragment) getFragmentManager().findFragmentById(R.id.map);
mapFragment.getMapAsync(new OnMapReadyCallback() {
public GoogleMap googleMap;
@Override
public void onMapReady(GoogleMap gMap) {
this.googleMap = gMap;
mGoogleApiClient.connect();
}
});
//continue
MapsInitializer.initialize(getApplicationContext());
mGoogleApiClient = new GoogleApiClient.Builder(this).addConnectionCallbacks(this).addOnConnectionFailedListener(this).addApi(LocationServices.API).build();
initListeners();
// Get the button view
View locationButton = ((View) findViewById(Integer.parseInt("1")).getParent()).findViewById(Integer.parseInt("2"));
// and next place it, for exemple, on bottom right (as Google Maps app)
RelativeLayout.LayoutParams rlp = (RelativeLayout.LayoutParams) locationButton.getLayoutParams();
rlp.addRule(RelativeLayout.ALIGN_PARENT_TOP, 0);
rlp.addRule(RelativeLayout.ALIGN_PARENT_BOTTOM, RelativeLayout.TRUE);
rlp.setMargins(0, 0, 400, 400);
}
} catch (Exception e) {
Log.e("map intialize ", e.toString());
}
}
private void initListeners() {
googleMap.setOnMarkerClickListener(this);
googleMap.setOnInfoWindowClickListener(this);
googleMap.setOnMapClickListener(this);
googleMap.setMapType(GoogleMap.MAP_TYPE_NORMAL);
}
@Override
public void onConnected(Bundle bundle) {
if (ActivityCompat.checkSelfPermission(this, android.Manifest.permission.ACCESS_FINE_LOCATION) != PackageManager.PERMISSION_GRANTED && ActivityCompat.checkSelfPermission(this, android.Manifest.permission.ACCESS_COARSE_LOCATION) != PackageManager.PERMISSION_GRANTED) {
// TODO: Consider calling
// ActivityCompat#requestPermissions
// here to request the missing permissions, and then overriding
// public void onRequestPermissionsResult(int requestCode, String[] permissions,
// int[] grantResults)
// to handle the case where the user grants the permission. See the documentation
// for ActivityCompat#requestPermissions for more details.
return;
}
googleMap.setMyLocationEnabled(true);
mCurrentLocation = LocationServices.FusedLocationApi.getLastLocation(mGoogleApiClient);
LocationManager lm = (LocationManager) getSystemService(Context.LOCATION_SERVICE);
gps_enabled = lm.isProviderEnabled(LocationManager.GPS_PROVIDER);
network_enabled = lm.isProviderEnabled(LocationManager.NETWORK_PROVIDER);
if (!gps_enabled && !network_enabled) {
AlertDialog.Builder dialog = new AlertDialog.Builder(this);
dialog.setMessage("يرجى تفعيل خاصية تحديد الموقع");
dialog.setPositiveButton("افتح الإعدادات", new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface paramDialogInterface, int paramInt) {
paramDialogInterface.dismiss();
Intent myIntent = new Intent(Settings.ACTION_LOCATION_SOURCE_SETTINGS);
startActivity(myIntent);
}
});
dialog.setNegativeButton("الغاء", new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface paramDialogInterface, int paramInt) {
paramDialogInterface.dismiss();
}
});
dialog.show();
mCurrentLocation = new Location("");
mCurrentLocation.setLatitude(15.0000);
mCurrentLocation.setLongitude(48.0000);
initCamera(mCurrentLocation, false);
} else {
if (mCurrentLocation == null) {
mCurrentLocation = new Location("");
mCurrentLocation.setLatitude(15.0000);
mCurrentLocation.setLongitude(48.0000);
initCamera(mCurrentLocation, false);
} else {
initCamera(mCurrentLocation, true);
}
}
}
private void initCamera(Location location, Boolean conn) {
CameraPosition position;
if (conn) {
position = CameraPosition.builder().target(new LatLng(location.getLatitude(), location.getLongitude())).zoom(15f).bearing(0.0f).tilt(0.0f).build();
} else {
position = CameraPosition.builder().target(new LatLng(location.getLatitude(), location.getLongitude())).zoom(5f).bearing(0.0f).tilt(0.0f).build();
}
googleMap.animateCamera(CameraUpdateFactory.newCameraPosition(position));
googleMap.setMapType(GoogleMap.MAP_TYPE_NORMAL);
googleMap.setTrafficEnabled(false);
String LATITUDE = (location.getLatitude() + " ");
String LONGITUDE = (location.getLongitude() + " ");
String DEV_LATITUDE = (location.getLatitude() + " ");
String DEV_LONGITUDE = (location.getLongitude() + " ");
}
@Override
public void onConnectionSuspended(int i) {
}
@Override
public void onConnectionFailed(ConnectionResult connectionResult) {
mCurrentLocation = new Location("");
mCurrentLocation.setLatitude(15.0000);
mCurrentLocation.setLongitude(48.0000);
initCamera(mCurrentLocation, false);
}
@Override
public void onInfoWindowClick(Marker marker) {
}
@Override
public boolean onMarkerClick(Marker marker) {
marker.showInfoWindow();
return true;
}
@Override
public void onStart() {
super.onStart();
if (mGoogleApiClient != null)
mGoogleApiClient.connect();
}
@Override
public void onStop() {
super.onStop();
if (mGoogleApiClient != null && mGoogleApiClient.isConnected()) {
mGoogleApiClient.disconnect();
}
}
@Override
public void onMapClick(LatLng latLng) {
if (currentAddress != null) {
//make it null to remove the first one
currentAddress = null;
}
Log.e("condition ", String.valueOf(service_type ==1));
boolean condition = service_type == 1;
Log.e("condition", condition + "");
if (service_type ==1) {
Log.e("service type mapclick", service_type + "");
if (isStartPointClicked) {
getStartAddress(latLng);
} else {
getEndAddress(latLng);
}
} else {
selectPoint(latLng);
Log.e("service type mapclick2", service_type + "");
}
}
void selectPoint(LatLng latLng) {
if (marker != null) {
marker.remove();
}
MarkerOptions options = new MarkerOptions().position(latLng);
options.icon(BitmapDescriptorFactory.defaultMarker());
marker = googleMap.addMarker(options);
USER_LATITUDE = Double.valueOf(latLng.latitude + " ");
Toast.makeText(select_position.this, "latitude " + USER_LATITUDE, Toast.LENGTH_LONG);
Log.e("my latitude", USER_LATITUDE + "");
USER_LONGITUDE = Double.valueOf(latLng.longitude + " ");
Toast.makeText(select_position.this, "longitude " + USER_LONGITUDE, Toast.LENGTH_LONG);
Log.e("Longitude", USER_LONGITUDE + "");
//update map location
CameraPosition position = CameraPosition.builder().target(latLng).zoom(15f).bearing(0.0f).tilt(0.0f).build();
googleMap.animateCamera(CameraUpdateFactory.newCameraPosition(position));
}
void getStartAddress(final LatLng Startpoint) {
startPoint = (TextView) findViewById(R.id.startPointTV);
List<android.location.Address> addresses = new ArrayList<>();
try {
Log.e("point latlng", Startpoint + "");
geocoder = new Geocoder(this, Locale.ENGLISH);
addresses = geocoder.getFromLocation(Startpoint.latitude, Startpoint.longitude, 1);
} catch (IOException e) {
e.toString();
Log.e("error getAddress", e.toString());
}
final android.location.Address address = addresses.get(0);
if (address != null) {
StringBuilder sb = new StringBuilder();
for (int i = 0; i < address.getMaxAddressLineIndex(); i++) {
sb.append(address.getAddressLine(i) + "\n");
Log.e("address from geo", sb + "");
startPoint.setText(sb);
// Toast.makeText(this, sb.toString(), Toast.LENGTH_LONG).show();
}
//remove previously placed Marker
if (markerStartpoint != null) {
markerEndpoint.remove();
}
//place marker where user just clicked
markerStartpoint = googleMap.addMarker(new MarkerOptions().position(Startpoint).title("Marker")
.icon(BitmapDescriptorFactory.defaultMarker(BitmapDescriptorFactory.HUE_ROSE)));
StartValue=Startpoint;
}
}
void getEndAddress(LatLng Endpoint) {
endPoint = (TextView) findViewById(R.id.endPointTV);
List<android.location.Address> addresses = new ArrayList<>();
try {
Log.e("point latlng", Endpoint + "");
geocoder = new Geocoder(this, Locale.ENGLISH);
addresses = geocoder.getFromLocation(Endpoint.latitude, Endpoint.longitude, 1);
} catch (IOException e) {
e.toString();
Log.e("error getAddress", e.toString());
}
final android.location.Address address = addresses.get(0);
if (address != null) {
StringBuilder sb = new StringBuilder();
for (int i = 0; i < address.getMaxAddressLineIndex(); i++) {
sb.append(address.getAddressLine(i) + "\n");
Log.e("address from geo", sb + "");
endPoint.setText(sb);
// Toast.makeText(this, sb.toString(), Toast.LENGTH_LONG).show();
}
//remove previously placed Marker
if (markerEndpoint != null) {
markerEndpoint.remove();
}
//place marker where user just clicked
markerEndpoint = googleMap.addMarker(new MarkerOptions().position(Endpoint).title("Marker")
.icon(BitmapDescriptorFactory.defaultMarker(BitmapDescriptorFactory.HUE_BLUE)));
EndValue=Endpoint;
}
StartPointLayout = (RelativeLayout) findViewById(R.id.StartPointLayout);
EndPointLayout = (RelativeLayout) findViewById(R.id.EndPointLayout);
StartPointLayout.setOnClickListener(new View.OnClickListener() {
public void onClick(View v) {
isStartPointClicked = true;
Log.e("is start point",isStartPointClicked+"");
}
});
EndPointLayout.setOnClickListener(new View.OnClickListener()
{
@Override
public void onClick(View v) {
isStartPointClicked = false;
Log.e("is end point",isStartPointClicked+"");
}
}
);
}
@Override
public void onMapReady(GoogleMap googleMap) {
this.googleMap=googleMap;
}
}
提前预订..
答案 0 :(得分：0)
你使用过棉花糖权限吗？
@Override
public void onRequestPermissionsResult(int requestCode, String[] permissions, int[] grantResults) {
if (requestCode == MY_LOCATION_REQUEST_CODE) {
if (permissions.length == 1 &&
permissions[0] == Manifest.permission.ACCESS_FINE_LOCATION &&
grantResults[0] == PackageManager.PERMISSION_GRANTED) {
mMap.setMyLocationEnabled(true);
} else {
// Permission was denied. Display an error message.
}
}
答案 1 :(得分：0)
多数民众赞成我怎么做，可能会对你有用。 在转到您要使用我的位置图标的活动之前获取位置权限，并使用this.googleMap.setMyLocationEnabled（true）;在onMapReady（）函数中。