wie Sie den Speicherort Modus ändern bilden sie Standardmodus (Gerät nur)

Question

Ich versuche zu implementieren eine Google-Karte für das Erhalten aktuellen Standort mit diesem Tutorial

android google map tutorial

„hohe Genauigkeit/Batteriespar“ Das Problem ist, dass es meinen aktuellen Standort nicht erreicht, bis ich die Google-Karte meines Geräts gestartet und die Erlaubnis erteilt habe, auf die Google-Standortdienste zuzugreifen. Danach bekommt meine Anwendung auch meinen aktuellen Standort. Und es funktioniert gut, bis der Standort im Gerät aktiviert ist. Und wenn der Standort ausgeschaltet ist, ist es wieder erforderlich, die Google-Karte des Geräts zu starten und die Erlaubnis für Google-Standortdienste zu erteilen.

Ich habe bereits den Schlüssel gemäß den Anweisungen generieren.

Ich bin das Problem in Gerätestandort-Modus gefunden. Wenn ich Gerätemodus auf hohe Genauigkeit/Batterie sparen manuell ändern, funktioniert es gut.

So wie die Lage Modus ändern bilden sie Standardmodus (Gerät nur) programmatisch

Hier ist die Aktivität Code „hoher Genauigkeit/Batteriespar“:

public class MapsActivity extends FragmentActivity implements OnMapReadyCallback, 
     GoogleApiClient.ConnectionCallbacks, 
     GoogleApiClient.OnConnectionFailedListener, 
     LocationListener { 

    private GoogleMap mMap; 
    GoogleApiClient mGoogleApiClient; 
    Location mLastLocation; 
    Marker mCurrLocationMarker; 
    LocationRequest mLocationRequest; 

    @Override 
    protected void onCreate(Bundle savedInstanceState) { 
     super.onCreate(savedInstanceState); 
     setContentView(R.layout.activity_maps); 

     if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) { 
      checkLocationPermission(); 
     } 
     // Obtain the SupportMapFragment and get notified when the map is ready to be used. 
     SupportMapFragment mapFragment = (SupportMapFragment) getSupportFragmentManager() 
       .findFragmentById(R.id.map); 
     mapFragment.getMapAsync(this); 
    } 


    /** 
    * Manipulates the map once available. 
    * This callback is triggered when the map is ready to be used. 
    * This is where we can add markers or lines, add listeners or move the camera. In this case, 
    * we just add a marker near Sydney, Australia. 
    * If Google Play services is not installed on the device, the user will be prompted to install 
    * it inside the SupportMapFragment. This method will only be triggered once the user has 
    * installed Google Play services and returned to the app. 
    */ 
    @Override 
    public void onMapReady(GoogleMap googleMap) { 
     mMap = googleMap; 
     mMap.setMapType(GoogleMap.MAP_TYPE_HYBRID); 

     //Initialize Google Play Services 
     if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) { 
      if (ContextCompat.checkSelfPermission(this, 
        Manifest.permission.ACCESS_FINE_LOCATION) 
        == PackageManager.PERMISSION_GRANTED) { 
       buildGoogleApiClient(); 
       mMap.setMyLocationEnabled(true); 
      } 
     } 
     else { 
      buildGoogleApiClient(); 
      mMap.setMyLocationEnabled(true); 
     } 
    } 

    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("Current Position"); 
     markerOptions.icon(BitmapDescriptorFactory.defaultMarker(BitmapDescriptorFactory.HUE_MAGENTA)); 
     mCurrLocationMarker = mMap.addMarker(markerOptions); 

     //move map camera 
     mMap.moveCamera(CameraUpdateFactory.newLatLng(latLng)); 
     mMap.animateCamera(CameraUpdateFactory.zoomTo(11)); 

     //stop location updates 
     if (mGoogleApiClient != null) { 
      LocationServices.FusedLocationApi.removeLocationUpdates(mGoogleApiClient, this); 
     } 

    } 

    @Override 
    public void onConnectionFailed(ConnectionResult connectionResult) { 

    } 

    public static final int MY_PERMISSIONS_REQUEST_LOCATION = 99; 
    public boolean checkLocationPermission(){ 
     if (ContextCompat.checkSelfPermission(this, 
       Manifest.permission.ACCESS_FINE_LOCATION) 
       != PackageManager.PERMISSION_GRANTED) { 

      // Asking user if explanation is needed 
      if (ActivityCompat.shouldShowRequestPermissionRationale(this, 
        Manifest.permission.ACCESS_FINE_LOCATION)) { 

       // Show an explanation to the user *asynchronously* -- don't block 
       // this thread waiting for the user's response! After the user 
       // sees the explanation, try again to request the permission. 

       //Prompt the user once explanation has been shown 
       ActivityCompat.requestPermissions(this, 
         new String[]{Manifest.permission.ACCESS_FINE_LOCATION}, 
         MY_PERMISSIONS_REQUEST_LOCATION); 


      } else { 
       // No explanation needed, we can request the permission. 
       ActivityCompat.requestPermissions(this, 
         new String[]{Manifest.permission.ACCESS_FINE_LOCATION}, 
         MY_PERMISSIONS_REQUEST_LOCATION); 
      } 
      return false; 
     } else { 
      return true; 
     } 
    } 

    @Override 
    public void onRequestPermissionsResult(int requestCode, 
              String permissions[], int[] grantResults) { 
     switch (requestCode) { 
      case MY_PERMISSIONS_REQUEST_LOCATION: { 
       // If request is cancelled, the result arrays are empty. 
       if (grantResults.length > 0 
         && grantResults[0] == PackageManager.PERMISSION_GRANTED) { 

        // permission was granted. Do the 
        // contacts-related task you need to do. 
        if (ContextCompat.checkSelfPermission(this, 
          Manifest.permission.ACCESS_FINE_LOCATION) 
          == PackageManager.PERMISSION_GRANTED) { 

         if (mGoogleApiClient == null) { 
          buildGoogleApiClient(); 
         } 
         mMap.setMyLocationEnabled(true); 
        } 

       } else { 

        // Permission denied, Disable the functionality that depends on this permission. 
        Toast.makeText(this, "permission denied", Toast.LENGTH_LONG).show(); 
       } 
       return; 
      } 

      // other 'case' lines to check for other permissions this app might request. 
      // You can add here other case statements according to your requirement. 
     } 
    } 
} 

hier ist die Manifest-Dateicode:

<?xml version="1.0" encoding="utf-8"?> 
<manifest xmlns:android="http://schemas.android.com/apk/res/android" 
    package="com.example.googlemap"> 

    <uses-permission android:name="android.permission.INTERNET" /> 
    <uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" /> 
    <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" /> 
    <uses-permission android:name="com.google.android.providers.gsf.permission.READ_GSERVICES" /> 
    <uses-permission android:name="android.permission.ACCESS_FINE_LOCATION" /> 


    <permission 
     android:name="com.example.envent_pc03.googlemap.permission.MAPS_RECEIVE" 
     android:protectionLevel="signature" /> 
    <uses-permission android:name="com.example.googlemap.permission.MAPS_RECEIVE"/> 
    <uses-feature android:name="android.hardware.location.gps" /> 

    <uses-feature 
     android:glEsVersion="0x00020000" 
     android:required="true"/> 
    <!-- 
     The ACCESS_COARSE/FINE_LOCATION permissions are not required to use 
     Google Maps Android API v2, but you must specify either coarse or fine 
     location permissions for the 'MyLocation' functionality. 
    --> 
    <!--<uses-permission android:name="android.permission.ACCESS_FINE_LOCATION" />--> 
    <!--<uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />--> 
    <!--<uses-permission android:name="android.permission.INTERNET" />--> 
    <!--<uses-permission android:name="com.google.android.providers.gsf.permission.READ_GSERVICES" />--> 
    <!-- 
     The ACCESS_COARSE/FINE_LOCATION permissions are not required to use 
     Google Maps Android API v2, but you must specify either coarse or fine 
     location permissions for the 'MyLocation' functionality. 
    --> 
    <!--<uses-permission android:name="android.permission.ACCESS_COARSE_LOCATION"/>--> 
    <!--<uses-permission android:name="android.permission.ACCESS_FINE_LOCATION" />--> 

    <application 
     android:allowBackup="true" 
     android:icon="@mipmap/ic_launcher" 
     android:label="@string/app_name" 
     android:supportsRtl="true" 
     android:theme="@style/AppTheme"> 

     <!-- 
      The API key for Google Maps-based APIs is defined as a string resource. 
      (See the file "res/values/google_maps_api.xml"). 
      Note that the API key is linked to the encryption key used to sign the APK. 
      You need a different API key for each encryption key, including the release key that is used to 
      sign the APK for publishing. 
      You can define the keys for the debug and release targets in src/debug/ and src/release/. 
     --> 
     <meta-data 
      android:name="com.google.android.geo.API_KEY" 
      android:value="@string/google_maps_key" /> 

     <activity 
      android:name=".MapsActivity" 
      android:label="@string/title_activity_maps"> 
      <intent-filter> 
       <action android:name="android.intent.action.MAIN" /> 

       <category android:name="android.intent.category.LAUNCHER" /> 
      </intent-filter> 
     </activity> 
    </application> 

</manifest> 

Answer 1

Bevor Sie Ortsaktualisierungen anfordern, müssen Sie die korrekten Standorteinstellungen überprüfen r Ihre Anforderung.

eine LocationSettingsRequest.Builder erstellen und all die LocationRequests hinzufügen, die die App verwenden werden:

LocationSettingsRequest.Builder builder = new LocationSettingsRequest.Builder().addLocationRequest(mLocationRequest); 

Überprüfen Sie, ob die Standorteinstellungen erfüllt sind, mit

PendingResult<LocationSettingsResult> result = 
     LocationServices.SettingsApi.checkLocationSettings(mGoogleClient, builder.build()); 

Wenn die PendingResult zurückkehrt, die Der Client kann die Standorteinstellungen überprüfen, indem er den Statuscode des LocationSettingsResult-Objekts betrachtet.

result.setResultCallback(new ResultCallback<LocationSettingsResult>() { 
    @Override 
    public void onResult(LocationSettingsResult result) { 
     final Status status = result.getStatus(); 
     final LocationSettingsStates = result.getLocationSettingsStates(); 
     switch (status.getStatusCode()) { 
      case LocationSettingsStatusCodes.SUCCESS: 
       // All location settings are satisfied. The client can initialize location 
       // requests here. 
       ... 
       break; 
      case LocationSettingsStatusCodes.RESOLUTION_REQUIRED: 
       // Location settings are not satisfied. But could be fixed by showing the user 
       // a dialog. 
       try { 
        // Show the dialog by calling startResolutionForResult(), 
        // and check the result in onActivityResult(). 
        status.startResolutionForResult(
         MapsActivity.this, 
         REQUEST_CHECK_SETTINGS); 
       } catch (SendIntentException e) { 
        // Ignore the error. 
       } 
       break; 
      case LocationSettingsStatusCodes.SETTINGS_CHANGE_UNAVAILABLE: 
       // Location settings are not satisfied. However, we have no way to fix the 
       // settings so we won't show the dialog. 
       ... 
       break; 
     } 
    } 
}); 

Das Ergebnis des Dialogs wird über onActivityResult (int, int, Intent)

@Override 
protected void onActivityResult(int requestCode, int resultCode, Intent data) { 
    final LocationSettingsStates states = LocationSettingsStates.fromIntent(intent); 
    switch (requestCode) { 
     case REQUEST_CHECK_SETTINGS: 
      switch (resultCode) { 
       case Activity.RESULT_OK: 
        // All required changes were successfully made 
        ... 
        break; 
       case Activity.RESULT_CANCELED: 
        // The user was asked to change settings, but chose not to 
        ... 
        break; 
       default: 
        break; 
      } 
      break; 
    } 
} 

Als Referenz lesen SettingsApi Dokument, das erklärt den Fall sehr gut zurückgeschickt werden.

Alternativ können Sie den Benutzer direkt zur Seite mit den Standorteinstellungen umleiten.

int locationMode = Settings.Secure.getInt(activityUnderTest.getContentResolver(), Settings.Secure.LOCATION_MODE); 

Überprüfen Sie location_mode auf mögliche Rückgabewerte.

if(locationMode == LOCATION_MODE_HIGH_ACCURACY) { 
    //request location updates 
} else { //redirect user to settings page 
    startActivity(new Intent(Settings.ACTION_LOCATION_SOURCE_SETTINGS)); 
} 

Answer 2

Hier

@Override 
public void onConnected(@Nullable Bundle bundle) { 
    locationrequest = new LocationRequest().create(); 
    locationrequest.setPriority(LocationRequest.PRIORITY_HIGH_ACCURACY); 
    locationrequest.setInterval(1000); 

    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; 
    } 
    LocationServices.FusedLocationApi.requestLocationUpdates(mgoogleApi, locationrequest, this); 
    Toast.makeText(context,"Location Connected and ready to publish",Toast.LENGTH_SHORT).show(); 
} 

Answer 3

try Ihre google map von xml zu ändern, ob es Klasse oder Google-Support Karte führen, dass Sie Fragmente so verwenden.