由于运行时问题，Google Maps API 无法在 API 23 以上运行
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【中文标题】由于运行时问题，Google Maps API 无法在 API 23 以上运行【英文标题】：Google Maps API not working above API 23 due to run time issues 【发布时间】：2017-09-23 10:31:19 【问题描述】：问题：Maps API 在 API 23 下运行良好，但由于运行时问题，它们在第一次运行时无法以某种方式获得权限。他们第一次请求权限，但第一次不工作。当我第二次运行该应用程序时，它在 23 以上的 API 上也能正常工作。但是对于第一次运行，它不起作用。这段代码应该做什么以及第二次做什么，是要求用户一个一个地放置两个标记，并使用用户选择的坐标对其进行反向地理编码。
import android.Manifest;
import android.content.DialogInterface;
import android.content.Intent;
import android.content.pm.PackageManager;
import android.location.Address;
import android.location.Geocoder;
import android.location.Location;
import android.os.Build;
import android.os.Bundle;
import android.support.v4.app.ActivityCompat;
import android.support.v4.app.FragmentActivity;
import android.support.v4.content.ContextCompat;
import android.support.v7.app.AlertDialog;
import android.util.Log;
import android.view.View;
import android.widget.Button;
import android.widget.Toast;
import com.google.android.gms.common.ConnectionResult;
import com.google.android.gms.common.api.GoogleApiClient;
import com.google.android.gms.location.LocationListener;
import com.google.android.gms.location.LocationRequest;
import com.google.android.gms.location.LocationServices;
import com.google.android.gms.maps.CameraUpdateFactory;
import com.google.android.gms.maps.GoogleMap;
import com.google.android.gms.maps.OnMapReadyCallback;
import com.google.android.gms.maps.SupportMapFragment;
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 java.io.IOException;
import java.util.List;
import java.util.Locale;
public class MapsActivity extends FragmentActivity implements OnMapReadyCallback,
GoogleApiClient.ConnectionCallbacks,
GoogleApiClient.OnConnectionFailedListener,
LocationListener
private GoogleMap mMap;
GoogleApiClient mGoogleApiClient;
Location mLastLocation;
Marker mCurrLocationMarker;
LocationRequest mLocationRequest;
public Button homeLocationFromPin;
public Button officeLocationFromPin;
public static double homeLatitude;
public static double officeLatitude;
public static double homeLongitude;
public static double officeLongitude;
public int count = 0;
public MarkerOptions placedHomeMarker;
public MarkerOptions placedOfficeMarker;
public static final int LOCATION_REQUEST_CODE = 99;
@Override
protected void onCreate(Bundle savedInstanceState)
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_maps);
if (ActivityCompat.checkSelfPermission
(this, Manifest.permission.ACCESS_FINE_LOCATION) != PackageManager.PERMISSION_GRANTED
&& ActivityCompat.checkSelfPermission
(this, Manifest.permission.ACCESS_COARSE_LOCATION) != PackageManager.PERMISSION_GRANTED)
requestPermission(Manifest.permission.ACCESS_FINE_LOCATION,
LOCATION_REQUEST_CODE);
// Obtain the SupportMapFragment and get notified when the map is ready to be used.
SupportMapFragment mapFragment = (SupportMapFragment) getSupportFragmentManager().findFragmentById(map);
mapFragment.getMapAsync(this);
homeLocationFromPin = (Button) findViewById(R.id.confirmHomeLocation);
homeLocationFromPin.setOnClickListener(new View.OnClickListener()
@Override
public void onClick(View view)
if (String.valueOf(homeLongitude) != null && String.valueOf(homeLatitude) != null)
//Get nearby Places here based on Latitude and Longitude
// Toast.makeText(MapsActivity.this, getAddress(homeLatitude, homeLongitude), Toast.LENGTH_LONG).show();
showAlertBoxForHomeLocationConfirmation(getAddress(homeLatitude, homeLongitude));
else
Toast.makeText(MapsActivity.this, "Please drop pin to home location first", Toast.LENGTH_SHORT).show();
);
officeLocationFromPin = (Button) findViewById(R.id.confirmOfficeLocation);
officeLocationFromPin.setOnClickListener(new View.OnClickListener()
@Override
public void onClick(View view)
if (String.valueOf(officeLatitude) != null && String.valueOf(officeLongitude) != null)
//Get nearby Places here based on Latitude and Longitude
// Toast.makeText(MapsActivity.this, getAddress(homeLatitude, homeLongitude), Toast.LENGTH_LONG).show();
showAlertBoxForOfficeLocationConfirmation(getAddress(officeLatitude, officeLongitude));
else
Toast.makeText(MapsActivity.this, "Please drop pin to home location first", Toast.LENGTH_SHORT).show();
);
//End Of OnCreate
@Override
public void onMapReady(GoogleMap googleMap)
mMap = googleMap;
mMap.setMapType(GoogleMap.MAP_TYPE_HYBRID);
LatLng boston = new LatLng(42.3601, -71.0589);
mMap.moveCamera(CameraUpdateFactory.newLatLng(boston));
mMap.animateCamera(CameraUpdateFactory.zoomTo(15));
showAlertBox("Home");
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M)
if (ActivityCompat.checkSelfPermission(this, Manifest.permission.ACCESS_FINE_LOCATION) == PackageManager.PERMISSION_GRANTED && ActivityCompat.checkSelfPermission(this, Manifest.permission.ACCESS_COARSE_LOCATION) == PackageManager.PERMISSION_GRANTED)
buildGoogleApiClient();
mMap.setMyLocationEnabled(true);
Toast.makeText(this, "Inside Perm", Toast.LENGTH_LONG).show();
mMap.setOnMapClickListener(new GoogleMap.OnMapClickListener()
@Override
public void onMapClick(LatLng latLng)
if (count == 0)
//Make the confirm button available on first tap
homeLocationFromPin.setVisibility(View.VISIBLE);
//add(point);
mMap.clear();
placedHomeMarker = new MarkerOptions().position(latLng);
placedHomeMarker.title("Home Location");
mMap.addMarker(placedHomeMarker);
homeLatitude = latLng.latitude;
homeLongitude = latLng.longitude;
Toast.makeText(MapsActivity.this, getNameOnly(homeLatitude, homeLongitude), Toast.LENGTH_SHORT).show();
else
officeLocationFromPin.setVisibility(View.VISIBLE);
placedOfficeMarker = new MarkerOptions().position(latLng);
placedOfficeMarker.title("Office Location");
mMap.addMarker(placedOfficeMarker);
officeLatitude = latLng.latitude;
officeLongitude = latLng.longitude;
Toast.makeText(MapsActivity.this, getNameOnly(homeLatitude, homeLongitude), Toast.LENGTH_SHORT).show();
Toast.makeText(MapsActivity.this, getNameOnly(officeLatitude, officeLongitude), Toast.LENGTH_SHORT).show();
);
else
buildGoogleApiClient();
mMap.setMyLocationEnabled(true);
mMap.setOnMapClickListener(new GoogleMap.OnMapClickListener()
@Override
public void onMapClick(LatLng latLng)
if (count == 0)
//Make the confirm button available on first tap
homeLocationFromPin.setVisibility(View.VISIBLE);
//add(point);
mMap.clear();
placedHomeMarker = new MarkerOptions().position(latLng);
placedHomeMarker.title("Home Location");
mMap.addMarker(placedHomeMarker);
homeLatitude = latLng.latitude;
homeLongitude = latLng.longitude;
Toast.makeText(MapsActivity.this, getNameOnly(homeLatitude, homeLongitude), Toast.LENGTH_SHORT).show();
else
officeLocationFromPin.setVisibility(View.VISIBLE);
placedOfficeMarker = new MarkerOptions().position(latLng);
placedOfficeMarker.title("Office Location");
mMap.addMarker(placedOfficeMarker);
officeLatitude = latLng.latitude;
officeLongitude = latLng.longitude;
Toast.makeText(MapsActivity.this, getNameOnly(homeLatitude, homeLongitude), Toast.LENGTH_SHORT).show();
Toast.makeText(MapsActivity.this, getNameOnly(officeLatitude, officeLongitude), Toast.LENGTH_SHORT).show();
);
//End of onMap Ready
protected synchronized void buildGoogleApiClient()
mGoogleApiClient = new GoogleApiClient.Builder(this)
.addConnectionCallbacks(this)
.addOnConnectionFailedListener(this)
.addApi(LocationServices.API)
.build();
mGoogleApiClient.connect();
@Override
public void onConnected(Bundle bundle)
mLocationRequest = new LocationRequest();
mLocationRequest.setInterval(1000);
mLocationRequest.setFastestInterval(1000);
mLocationRequest.setPriority(LocationRequest.PRIORITY_BALANCED_POWER_ACCURACY);
if (ContextCompat.checkSelfPermission(this,
Manifest.permission.ACCESS_FINE_LOCATION)
== PackageManager.PERMISSION_GRANTED)
LocationServices.FusedLocationApi.requestLocationUpdates(mGoogleApiClient, mLocationRequest, this);
@Override
public void onConnectionSuspended(int i)
@Override
public void onLocationChanged(Location location)
mLastLocation = location;
if (mCurrLocationMarker != null)
mCurrLocationMarker.remove();
//Place current location marker
LatLng latLng = new LatLng(location.getLatitude(), location.getLongitude());
MarkerOptions markerOptions = new MarkerOptions();
markerOptions.position(latLng);
// markerOptions.title("Your Current Location");
// markerOptions.icon(BitmapDescriptorFactory.defaultMarker(BitmapDescriptorFactory.HUE_MAGENTA));
// markerOptions.icon(BitmapDescriptorFactory.fromResource(R.drawable.home));
// markerOptions.draggable(true);
mCurrLocationMarker = mMap.addMarker(markerOptions);
//move map camera
mMap.moveCamera(CameraUpdateFactory.newLatLng(latLng));
mMap.animateCamera(CameraUpdateFactory.zoomTo(15));
//Set a marker drag listener
mMap.setOnMarkerDragListener(new GoogleMap.OnMarkerDragListener()
@Override
public void onMarkerDragStart(Marker marker)
@Override
public void onMarkerDrag(Marker marker)
@Override
public void onMarkerDragEnd(Marker marker)
mMap.animateCamera(CameraUpdateFactory.newLatLng(marker.getPosition()));
//Get the latitude and longitude of the place where user dropped the marker
Toast.makeText(MapsActivity.this, "Latitude:" + String.valueOf(marker.getPosition().latitude), Toast.LENGTH_LONG).show();
homeLatitude = marker.getPosition().latitude;
Toast.makeText(MapsActivity.this, "Longitude:" + String.valueOf(marker.getPosition().longitude), Toast.LENGTH_LONG).show();
homeLongitude = marker.getPosition().longitude;
);
//stop location updates
if (mGoogleApiClient != null)
LocationServices.FusedLocationApi.removeLocationUpdates(mGoogleApiClient, this);
@Override
public void onConnectionFailed(ConnectionResult connectionResult)
public void showAlertBox(String LocationName)
AlertDialog.Builder b1 = new AlertDialog.Builder(MapsActivity.this);
b1.setMessage("Please select your " + LocationName + " location.\nTap anywhere on the screen to select your "
+ LocationName +
"location and press button to confirm.");
b1.setCancelable(false);
b1.setPositiveButton("Ok",
new DialogInterface.OnClickListener()
@Override
public void onClick(DialogInterface dialogInterface, int i)
);
AlertDialog customAlertBox = b1.create();
customAlertBox.show();
public void showAlertBoxForHomeLocationConfirmation(String reverseGeoStr)
AlertDialog.Builder b1 = new AlertDialog.Builder(MapsActivity.this);
b1.setMessage("Confirm your home location or search again\n" + reverseGeoStr);
b1.setCancelable(false);
b1.setPositiveButton("Confirm",
new DialogInterface.OnClickListener()
@Override
public void onClick(DialogInterface dialogInterface, int i)
count = 3;
homeLocationFromPin.setVisibility(View.GONE);
showAlertBox("Office");
);
b1.setNegativeButton("Do it again",
new DialogInterface.OnClickListener()
@Override
public void onClick(DialogInterface dialogInterface, int i)
Toast.makeText(MapsActivity.this, "Place Pin Again", Toast.LENGTH_SHORT).show();
);
AlertDialog customAlertBox = b1.create();
customAlertBox.show();
public void showAlertBoxForOfficeLocationConfirmation(String reverseGeoStr)
AlertDialog.Builder b1 = new AlertDialog.Builder(MapsActivity.this);
b1.setMessage("Confirm your Office location or search again\n" + reverseGeoStr);
b1.setCancelable(false);
b1.setPositiveButton("Confirm",
new DialogInterface.OnClickListener()
@Override
public void onClick(DialogInterface dialogInterface, int i)
Intent st = new Intent(MapsActivity.this, getUserName.class);
startActivity(st);
finish();
);
b1.setNegativeButton("Do it again",
new DialogInterface.OnClickListener()
@Override
public void onClick(DialogInterface dialogInterface, int i)
Toast.makeText(MapsActivity.this, "Place Pin Again", Toast.LENGTH_SHORT).show();
);
AlertDialog customAlertBox = b1.create();
customAlertBox.show();
private String getAddress(double latitude, double longitude)
if (latitude == 0.0 || longitude == 0.0)
//Give default values so it does not returns null
latitude = 42.3601;
longitude = -71.0589;
StringBuilder result = new StringBuilder();
try
Geocoder geocoder = new Geocoder(this, Locale.getDefault());
List<Address> addresses = geocoder.getFromLocation(latitude, longitude, 1);
if (addresses.size() > 0)
Address address = addresses.get(0);
result.append(address.getAddressLine(0)).append("\n");
result.append(address.getLocality()).append("\n");
result.append(address.getAdminArea()).append("\n");
result.append(address.getPostalCode()).append("\n");
result.append(address.getCountryName());
catch (IOException e)
Log.e("tag", e.getMessage());
return result.toString();
private String getNameOnly(double latitude, double longitude)
if (latitude == 0.0 || longitude == 0.0)
//Give default values so it does not returns null
latitude = 42.3601;
longitude = -71.0589;
StringBuilder result = new StringBuilder();
try
Geocoder geocoder = new Geocoder(this, Locale.getDefault());
List<Address> addresses = geocoder.getFromLocation(latitude, longitude, 1);
if (addresses.size() > 0)
Address address = addresses.get(0);
result.append(address.getAddressLine(0)).append("\n");
result.append(address.getLocality()).append("\n");
catch (IOException e)
Log.e("tag", e.getMessage());
return result.toString();
protected void requestPermission(String permissionType, int requestCode)
int permission = ContextCompat.checkSelfPermission(this,
permissionType);
if (permission != PackageManager.PERMISSION_GRANTED)
ActivityCompat.requestPermissions(this,
new String[]permissionType, requestCode
);
@Override
public void onRequestPermissionsResult(int requestCode,
String permissions[], int[] grantResults)
switch (requestCode)
case LOCATION_REQUEST_CODE:
if (grantResults.length == 0
|| grantResults[0] != PackageManager.PERMISSION_GRANTED)
Toast.makeText(this, "Unable to show location - permission required", Toast.LENGTH_LONG).show();
return;
【问题讨论】：
【参考方案1】：当您在onMapReady() 请求位置更新时，您应该在onRequestPermissionsResult 方法中调用mapFragment.getMapAsync(this);：
public void onRequestPermissionsResult(int requestCode, String permissions[], int[] grantResults)
switch (requestCode)
case LOCATION_REQUEST_CODE:
// If request is cancelled, the result arrays are empty.
if (grantResults.length > 0
&& grantResults[0] == PackageManager.PERMISSION_GRANTED)
mapFragment.getMapAsync(this);
else
Toast.makeText(getApplicationContext(), "Please provide the permission", Toast.LENGTH_LONG).show();
break;
希望这会有所帮助。
【讨论】：
看起来合乎逻辑并且正在工作。谢谢。这么小的事情我一直在敲打我的头，好几个小时。非常感谢。 真的很高兴它有帮助。 :)【参考方案2】：上面的解决方案使它适用于 API > 23 的手机，但它停止使用 API
@Override
public void onRequestPermissionsResult(int requestCode,
String permissions[], int[] grantResults)
switch (requestCode)
case LOCATION_REQUEST_CODE:
if (grantResults.length == 0 || grantResults[0] != PackageManager.PERMISSION_GRANTED)
Toast.makeText(this, "Unable to show location - permission required", Toast.LENGTH_LONG).show();
return;
// if (grantResults.length > 0 && grantResults[0] == PackageManager.PERMISSION_GRANTED)
// mapFragment.getMapAsync(this);
//
else
Toast.makeText(this,"Permission not granted",Toast.LENGTH_LONG).show();
break;
在 onMapReady() 中
@Override
public void onMapReady(GoogleMap googleMap)
mMap = googleMap;
mMap.setMapType(GoogleMap.MAP_TYPE_HYBRID);
LatLng boston = new LatLng(42.3601, -71.0589);
mMap.moveCamera(CameraUpdateFactory.newLatLng(boston));
mMap.animateCamera(CameraUpdateFactory.zoomTo(15));
showAlertBox("Home");
if (ActivityCompat.checkSelfPermission
(this, Manifest.permission.ACCESS_FINE_LOCATION) == PackageManager.PERMISSION_GRANTED
&& ActivityCompat.checkSelfPermission
(this, Manifest.permission.ACCESS_COARSE_LOCATION) == PackageManager.PERMISSION_GRANTED)
mMap.setMyLocationEnabled(true);
else
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M)
requestPermission(Manifest.permission.ACCESS_FINE_LOCATION, LOCATION_REQUEST_CODE);
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M)
buildGoogleApiClient();
Toast.makeText(this, "Inside Perm", Toast.LENGTH_LONG).show();
mMap.setOnMapClickListener(new GoogleMap.OnMapClickListener()
@Override
public void onMapClick(LatLng latLng)
if (count == 0)
//Make the confirm button available on first tap
homeLocationFromPin.setVisibility(View.VISIBLE);
//add(point);
mMap.clear();
placedHomeMarker = new MarkerOptions().position(latLng);
placedHomeMarker.title("Home Location");
mMap.addMarker(placedHomeMarker);
homeLatitude = latLng.latitude;
homeLongitude = latLng.longitude;
Toast.makeText(MapsActivity.this, getNameOnly(homeLatitude, homeLongitude), Toast.LENGTH_SHORT).show();
else
officeLocationFromPin.setVisibility(View.VISIBLE);
placedOfficeMarker = new MarkerOptions().position(latLng);
placedOfficeMarker.title("Office Location");
mMap.addMarker(placedOfficeMarker);
officeLatitude = latLng.latitude;
officeLongitude = latLng.longitude;
Toast.makeText(MapsActivity.this, getNameOnly(homeLatitude, homeLongitude), Toast.LENGTH_SHORT).show();
Toast.makeText(MapsActivity.this, getNameOnly(officeLatitude, officeLongitude), Toast.LENGTH_SHORT).show();
);
else
buildGoogleApiClient();
if (ActivityCompat.checkSelfPermission(this, Manifest.permission.ACCESS_FINE_LOCATION) == PackageManager.PERMISSION_GRANTED && ActivityCompat.checkSelfPermission(this, 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.
mMap.setMyLocationEnabled(true);
mMap.setOnMapClickListener(new GoogleMap.OnMapClickListener()
@Override
public void onMapClick(LatLng latLng)
if (count == 0)
//Make the confirm button available on first tap
homeLocationFromPin.setVisibility(View.VISIBLE);
//add(point);
mMap.clear();
placedHomeMarker = new MarkerOptions().position(latLng);
placedHomeMarker.title("Home Location");
mMap.addMarker(placedHomeMarker);
homeLatitude = latLng.latitude;
homeLongitude = latLng.longitude;
Toast.makeText(MapsActivity.this, getNameOnly(homeLatitude, homeLongitude), Toast.LENGTH_SHORT).show();
else
officeLocationFromPin.setVisibility(View.VISIBLE);
placedOfficeMarker = new MarkerOptions().position(latLng);
placedOfficeMarker.title("Office Location");
mMap.addMarker(placedOfficeMarker);
officeLatitude = latLng.latitude;
officeLongitude = latLng.longitude;
Toast.makeText(MapsActivity.this, getNameOnly(homeLatitude, homeLongitude), Toast.LENGTH_SHORT).show();
Toast.makeText(MapsActivity.this, getNameOnly(officeLatitude, officeLongitude), Toast.LENGTH_SHORT).show();
);
//End of onMap Ready
【讨论】：
是的，上面的解决方案专门针对您提到的问题。预计提问者将根据需要进行额外的修改。这不会使答案错误。尽管有许多方法可以为所有“API”版本使用上述代码，但你的方法非常好，赞成票也是我的。干杯！ 我没有说错。我非常感谢您的帮助。我也赞成你的回答。再次感谢。以上是关于由于运行时问题，Google Maps API 无法在 API 23 以上运行的主要内容，如果未能解决你的问题，请参考以下文章
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