After a long wait for Admob SDK Update on Xamarin to implement Adaptive Banners and new Native Ads ,after upgrade to new Nuget package Sdk 118.1.1preview ,Visual Studio open a .Java File and mention the following error :
error: ShouldDelayBannerRenderingListenerImplementor is not abstract and does not override abstract method zzb(Runnable) in ShouldDelayBannerRenderingListener.
To take advantage of the new xamarin admob sdk (118.1.1 preview) , and overcome the JAVA error :
error: ShouldDelayBannerRenderingListenerImplementor is not abstract and does not override abstract method zzb(Runnable) in ShouldDelayBannerRenderingListener.
just put the following code on the java file poped-up and build solution :
#Override
public boolean zzb(Runnable runnable) {
return false;
}
or let this c# code (FileWatcher)keep running :
static void Main(string[] args)
{
var Javacode = File.ReadAllText(#"MyJavaFile.java");
while (true)
{
try
{
var JavaFilePah = #"C:\Project\Android\apps\AppName\obj\Debug\100\android\src\mono\com\google\android\gms\ads\formats\ShouldDelayBannerRenderingListenerImplementor.java";
DateTime LastFileChang = File.GetLastWriteTime(JavaFilePah);
if (LastFileChang != LastFileChangesave)
{
if (File.Exists(JavaFilePah) && File.ReadAllText(JavaFilePah).Contains("zzb") == false)
{
File.WriteAllText(JavaFilePah, Javacode);
Console.WriteLine("ok");
}
LastFileChangesave = LastFileChang;
}
Thread.Sleep(10);
}
catch (Exception e)
{
}
}
}
change JavaFilePah with path of ur android app.
MyJavaFile content is :
package mono.com.google.android.gms.ads.formats;
public class ShouldDelayBannerRenderingListenerImplementor
extends java.lang.Object
implements
mono.android.IGCUserPeer,
com.google.android.gms.ads.formats.ShouldDelayBannerRenderingListener
{
/** #hide */
public static final String __md_methods;
static {
__md_methods =
"";
mono.android.Runtime.register ("Android.Gms.Ads.Formats.IShouldDelayBannerRenderingListenerImplementor, Xamarin.GooglePlayServices.Ads.Lite", ShouldDelayBannerRenderingListenerImplementor.class, __md_methods);
}
public ShouldDelayBannerRenderingListenerImplementor ()
{
super ();
if (getClass () == ShouldDelayBannerRenderingListenerImplementor.class)
mono.android.TypeManager.Activate ("Android.Gms.Ads.Formats.IShouldDelayBannerRenderingListenerImplementor, Xamarin.GooglePlayServices.Ads.Lite", "", this, new java.lang.Object[] { });
}
private java.util.ArrayList refList;
public void monodroidAddReference (java.lang.Object obj)
{
if (refList == null)
refList = new java.util.ArrayList ();
refList.add (obj);
}
public void monodroidClearReferences ()
{
if (refList != null)
refList.clear ();
}
#Override
public boolean zzb(Runnable runnable) {
return false;
}
}
I have to schedule a work to fetch user current location and update to server in a given interval (Even the app is not running).
I am trying to WorkManagerAPI to implement the functionality.
Is it possible to fetch the current location of the user from the doWork() method ?
locationManager.requestLocationUpdates(
provider, timeInterval, travelDistance, locationListener
);
When I request Location updates from the doWork() it throws below error.
java.lang.RuntimeException: Can't create handler inside thread that has not called Looper.prepare()
As per my understanding, when implementing LocationManager.requestLocationUpdates() on a Worker thread, the call is being made on a non-UI, background thread created by WorkManager. LocationManager.requestLocationUpdates() is an asynchronous call possibly on another background thread. To handle the callbacks defined by the LocationListener, the calling thread must stay alive. Thats why the exception says,
Can't create handler inside thread that has not called Looper.prepare()
Check the code snippet below. Please consider this as pseudocode, I haven't tested this piece of code.
public class LocationWorker extends Worker {
String LOG_TAG = "LocationWorker";
private Context mContext;
private MyHandlerThread mHandlerThread;
public LocationWorker(#NonNull Context context, #NonNull WorkerParameters workerParams) {
super(context, workerParams);
mContext = context;
}
#NonNull
#Override
public Result doWork() {
Log.d(LOG_TAG, "doWork");
mHandlerThread = new MyHandlerThread("MY_THREAD");
mHandlerThread.start();
Runnable runnable = new Runnable() {
#Override
public void run() {
LocationManager locationManager = (LocationManager) mContext.getSystemService(Context.LOCATION_SERVICE);
String bestProvider = locationManager.getBestProvider(new Criteria(), true);
boolean permission = false;
if (PermissionChecker.checkSelfPermission(mContext, Manifest.permission.ACCESS_FINE_LOCATION) == PackageManager.PERMISSION_GRANTED &&
PermissionChecker.checkSelfPermission(mContext, Manifest.permission.ACCESS_COARSE_LOCATION) == PackageManager.PERMISSION_GRANTED) {
Log.e(LOG_TAG, "This app requires ACCESS_FINE_LOCATION and ACCESS_COARSE_LOCATION permissions.");
permission = true;
}
Log.d(LOG_TAG, "permission: "+permission);
Log.d(LOG_TAG, "bestProvider: "+bestProvider);
if (permission && bestProvider != null) {
MyLocationListener locListener = new MyLocationListener();
locationManager.requestLocationUpdates(bestProvider, 500, 1, locListener, mHandlerThread.getLooper());
}
}
};
mHandlerThread.post(runnable);
return Result.success();
}
class MyHandlerThread extends HandlerThread {
Handler mHandler;
MyHandlerThread(String name) {
super(name);
}
#Override
protected void onLooperPrepared() {
Looper looper = getLooper();
if (looper != null)
mHandler = new Handler(looper);
}
void post(Runnable runnable) {
if (mHandler != null)
mHandler.post(runnable);
}
}
class MyLocationListener implements LocationListener
{
#Override
public void onLocationChanged(final Location loc)
{
Log.d(LOG_TAG, "Location changed: " + loc.getLatitude() +","+ loc.getLongitude());
}
#Override
public void onStatusChanged(String provider, int status, Bundle extras)
{
Log.d(LOG_TAG, "onStatusChanged");
}
#Override
public void onProviderDisabled(String provider)
{
Log.d(LOG_TAG, "onProviderDisabled");
}
#Override
public void onProviderEnabled(String provider)
{
Log.d(LOG_TAG, "onProviderEnabled");
}
}
}
I've seen this and the solution isn't working.
I've updated to the latest MvvmCross (well, latest everything actually) which is 5.4.2 at the time of this writing.
Here is my setup that registers my presenter:
public class Setup : MvxAppCompatSetup
{
public Setup(Context applicationContext)
: base(applicationContext)
{
}
protected override IEnumerable<Assembly> AndroidViewAssemblies => new List<Assembly>(base.AndroidViewAssemblies)
{
typeof(global::Android.Support.V7.Widget.Toolbar).Assembly
};
protected override IMvxApplication CreateApp()
{
Mvx.RegisterSingleton<INetworkManager>(() => new NetworkManagerAndroid(this.ApplicationContext));
return new App();
}
protected override void InitializeLastChance()
{
base.InitializeLastChance();
Mvx.RegisterSingleton<IAnalyticsService>(() => GoogleAnalyticsService.GetInstance());
}
protected override IMvxAndroidViewPresenter CreateViewPresenter()
{
var presenter = new MyAndroidPresenter(AndroidViewAssemblies);
Mvx.RegisterSingleton<IMvxAndroidViewPresenter>(presenter);
return presenter;
}
}
Here is my actual presenter:
public class MyAndroidPresenter : MvxFragmentsPresenter
{
public MyAndroidPresenter(IEnumerable<Assembly> AndroidViewAssemblies)
: base(AndroidViewAssemblies) // EXCEPTION HERE
{
}
protected override void ShowFragment(MvxViewModelRequest request)
{
if (GoHomeHandled(request))
return;
if (ShowModalHandled(request))
return;
base.ShowFragment(request);
}
protected override void ShowActivity(MvxViewModelRequest request, MvxViewModelRequest fragmentRequest = null)
{
if (GoHomeHandled(request))
return;
if (ShowModalHandled(request))
return;
base.ShowActivity(request, fragmentRequest);
}
private bool ShowModalHandled(MvxViewModelRequest request)
{
if (request.PresentationValues == null)
return false;
var viewsContainer = Mvx.Resolve<IMvxViewsContainer>();
var viewType = viewsContainer.GetViewType(request.ViewModelType);
var intent = new Intent(Application.Context, viewType);
if (request.PresentationValues.ContainsKey(Utilities.Constants.Navigation.ShowModal))
{
intent.AddFlags(ActivityFlags.NewTask | ActivityFlags.ClearTask);
Application.Context.StartActivity(intent);
return true;
}
else if (request.PresentationValues.ContainsKey(Utilities.Constants.Navigation.StayModal))
{
Application.Context.StartActivity(intent);
return true;
}
else
{
return false;
}
}
private bool GoHomeHandled(MvxViewModelRequest request)
{
if (request.PresentationValues == null)
return false;
if (request.PresentationValues.ContainsKey(Utilities.Constants.Navigation.ReturnHome))
{
var intent = new Intent(Application.Context, typeof(MainActivity));
intent.AddFlags(ActivityFlags.NewTask | ActivityFlags.ClearTask | ActivityFlags.TaskOnHome);
Application.Context.StartActivity(intent);
return true;
}
return false;
}
}
The exception I'm getting is the one in the title. I've tried cleaning, rebuilding, refreshing NuGet packages all to no avail.
I'm a bit frustrated and at a loss. I would appreciate any help.
The presenter name should be MvxAppCompatViewPresenter. If yours is still MvxFragmentsPresenter it means that one or more packages are outdated. Look at the Playground sample to see a full implementation: https://github.com/MvvmCross/MvvmCross/tree/develop/TestProjects/Playground
I am trying to implement a custom activity that initialises the Fused Location services in Xamarin c# so I can reuse this activity whenever the Fused Location is needed. The problem that I am having is that the map is being loaded before the location services. This way, I cannot animate the camera to zoom in at the user's location since the location is still null.
Here is the custom activity:
using System;
using Android.App;
using Android.Gms.Common;
using Android.Gms.Common.Apis;
using Android.Gms.Maps.Model;
using Android.Locations;
using Android.OS;
using Android.Gms.Location;
using Android.Widget;
namespace Maps.Droid.LocationService {
public class LocationTrackerActivity : Activity, GoogleApiClient.IConnectionCallbacks, GoogleApiClient.IOnConnectionFailedListener, Android.Gms.Location.ILocationListener {
// Static Fields
public static long MIN_DISTANCE_CHANGE_FOR_UPDATES = 5; // 5 meters
public static long MIN_TIME_BW_UPDATES = 1000 * 10; // 10 seconds
private Location currentLocation;
private Activity activity;
private bool hasGooglePlayServices;
private GoogleApiClient mGoogleApiClient;
private LocationRequest mLocationRequest;
private bool locationAvailable = false;
protected override void OnCreate(Bundle savedInstanceState) {
base.OnCreate(savedInstanceState);
this.activity = this;
hasGooglePlayServices = checkPlayServices();
if (hasGooglePlayServices) {
initFusedLocation();
} else {
initAndroidLocation();
}
}
private void initFusedLocation() {
mLocationRequest = new LocationRequest();
mLocationRequest.SetInterval(LocationTrackerActivity.MIN_TIME_BW_UPDATES);
mLocationRequest.SetFastestInterval(LocationTrackerActivity.MIN_TIME_BW_UPDATES / 2);
mLocationRequest.SetSmallestDisplacement(LocationTrackerActivity.MIN_DISTANCE_CHANGE_FOR_UPDATES);
mLocationRequest.SetPriority(LocationRequest.PriorityHighAccuracy);
mGoogleApiClient = new GoogleApiClient.Builder(Application.Context)
.AddConnectionCallbacks(this)
.AddOnConnectionFailedListener(this)
.AddApi(LocationServices.API)
.Build();
}
protected override void OnResume() {
base.OnResume();
if (mGoogleApiClient.IsConnected) {
LocationServices.FusedLocationApi.RequestLocationUpdates(mGoogleApiClient, mLocationRequest, this);
}
}
protected override void OnPause() {
base.OnPause();
// Stop location updates to save battery, but don't disconnect the GoogleApiClient object.
if (mGoogleApiClient.IsConnected) {
LocationServices.FusedLocationApi.RemoveLocationUpdates(mGoogleApiClient, this);
}
}
protected override void OnStart() {
base.OnStart();
mGoogleApiClient.Connect();
}
protected override void OnStop() {
base.OnStop();
// only stop if it's connected, otherwise we crash
if (mGoogleApiClient != null) {
mGoogleApiClient.Disconnect();
}
}
private void initAndroidLocation() {
}
private bool checkPlayServices() {
GoogleApiAvailability apiAvailability = GoogleApiAvailability.Instance;
int resultCode = apiAvailability.IsGooglePlayServicesAvailable(activity);
if (resultCode != ConnectionResult.Success) {
// In case we want to tell the user to install or update Google Play Services
//if (apiAvailability.IsUserResolvableError(resultCode)) {
// apiAvailability.GetErrorDialog(activity, resultCode, PLAY_SERVICES_RESOLUTION_REQUEST).Show();
//} else {
// Toast.MakeText(activity, "This device is not supported", ToastLength.Long).Show();
//}
return false;
}
return true; // has google play services installed
}
public double getLatitude() {
return currentLocation == null ? 0.0 : currentLocation.Latitude;
}
public double getLongitude() {
return currentLocation == null ? 0.0 : currentLocation.Longitude;
}
public bool canGetLocation() {
return locationAvailable;
}
public LatLng getLatLng() {
return new LatLng(currentLocation.Latitude, currentLocation.Longitude);
}
public void OnConnected(Bundle connectionHint) {
// Get last known recent location. If the user launches the activity,
// moves to a new location, and then changes the device orientation, the original location
// is displayed as the activity is re-created.
if (currentLocation == null && mGoogleApiClient.IsConnected) {
currentLocation = LocationServices.FusedLocationApi.GetLastLocation(mGoogleApiClient);
}
Console.WriteLine("location is about to be set to true");
locationAvailable = true;
LocationServices.FusedLocationApi.RequestLocationUpdates(mGoogleApiClient, mLocationRequest, this);
}
public void OnConnectionSuspended(int cause) {
// GoogleApiClient will automatically attempt to restore the connection.
// Applications should disable UI components that require the service, and wait for a call to onConnected(Bundle) to re-enable them
if (cause == GoogleApiClient.ConnectionCallbacks.CauseServiceDisconnected) {
Toast.MakeText(activity, "Location Services disconnected. Please re-connect.", ToastLength.Long).Show();
} else if (cause == GoogleApiClient.ConnectionCallbacks.CauseNetworkLost) {
Toast.MakeText(activity, "Network lost. Please re-connect.", ToastLength.Long).Show();
}
}
public void OnConnectionFailed(ConnectionResult result) {
Console.WriteLine("Connection failed: " + result.ToString());
}
public void OnLocationChanged(Location location) {
currentLocation = location;
}
}
}
Here is the class that inherit the custom class:
using Android.App;
using Android.OS;
using Maps.Droid.LocationService;
namespace Maps.Droid {
[Activity(Label = "Map Activity")]
public class MapActivity : LocationTrackerActivity {
// Properties
protected override void OnCreate(Bundle savedInstanceState) {
base.OnCreate(savedInstanceState);
SetContentView(Resource.Layout.map_activity);
var mapFrag = new MapViewFragment();
var ft = FragmentManager.BeginTransaction();
ft.Add(Resource.Id.map_container, mapFrag);
ft.Commit();
}
}
}
Here is the fragment in the inherited activity:
using System;
using Android.App;
using Android.OS;
using Android.Views;
using Android.Gms.Maps;
namespace Maps.Droid {
public class MapViewFragment : Fragment, IOnMapReadyCallback {
// private Activity activity;
private GoogleMap map;
private MapActivity parent;
public override View OnCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
View view = inflater.Inflate(Resource.Layout.map_fragment, null);
parent = ((MapActivity)Activity);
MapFragment frag = this.FragmentManager.FindFragmentById<MapFragment>(Resource.Id.map);
frag.GetMapAsync(this);
return view;
}
public void OnMapReady(GoogleMap googleMap) {
if (googleMap != null) {
map = googleMap;
var zoomVariance = 0.2;
var defaultZoom = 16f;
var currentZoomLevel = map.CameraPosition.Zoom;
map.MapType = GoogleMap.MapTypeNormal;
map.MyLocationEnabled = true;
map.CameraChange += delegate (object sender, GoogleMap.CameraChangeEventArgs e) {
if (Math.Abs(e.Position.Zoom - currentZoomLevel) < zoomVariance) {
return;
}
currentZoomLevel = e.Position.Zoom;
Console.WriteLine("Zooming " + currentZoomLevel);
};
map.UiSettings.ZoomControlsEnabled = true;
map.UiSettings.CompassEnabled = true;
map.UiSettings.SetAllGesturesEnabled(true); // Zoom, Tilt, Scroll, Rotate
if (parent.canGetLocation()) {
// ***** PROBLEM HERE ******* canGetLocation is set to true just afterwards.
map.AnimateCamera(CameraUpdateFactory.NewLatLngZoom(parent.getLatLng(), defaultZoom)); // Mosaic coordinates
}
}
}
}
}
I was thinking of implementing a call back to LocationTrackerActivity. So when the location services become available the class MapActivity then would be able to load the MapViewFragment within that custom callback. This way the location services would be loaded before the map. Therefore, this part of the code would always execute :
if (parent.canGetLocation()) {
// ***** PROBLEM HERE ******* canGetLocation is set to true just afterwards.
map.AnimateCamera(CameraUpdateFactory.NewLatLngZoom(parent.getLatLng(), defaultZoom)); // Mosaic coordinates
}
However I have no idea how to customise a callback. Maybe there are better solutions to this problem?
The problem can be because of OnConnected method. That's my OnConnected method for FusedLocationProvider in Xamarin. You can take a look on it.
public async void OnConnected(Bundle bundle)
{
Location location = LocationServices.FusedLocationApi.GetLastLocation(apiClient);
if (location != null)
{
latitude = location.Latitude;
longitude = location.Longitude;
locRequest.SetPriority(100);
locRequest.SetFastestInterval(500);
locRequest.SetInterval(1000);
await LocationServices.FusedLocationApi.RequestLocationUpdates(apiClient, locRequest, this);
}
}
When it is connected, i set the latitude and longitude values. Then in my onMapReady method, i create a new LatLng variable with these latitude and longitude variables.
void IOnMapReadyCallback.OnMapReady(GoogleMap myMap)
{
this.myMap = myMap;
myMarker = new MarkerOptions();
locCoordinates = new LatLng(latitude, longitude);
myMap.MapType = GoogleMap.MapTypeNormal;
myMap.UiSettings.ZoomControlsEnabled = true;
myMap.AnimateCamera(CameraUpdateFactory.NewLatLngZoom(locCoordinates, 10));
}
UPDATE:
I have managed to find a solution. If the user has google play services then use FusedLocation Services, if the user does not then we use Android Location Services. Then we only have to interact with one object of the type LocationTracker and everything is done by this interface:
namespace Maps.Droid.LocationService {
public interface LocationInterface {
void startLocationServices();
void stopLocationServices();
void pauseLocationServices();
void resumeLocationServices();
double getLatitude();
double getLongitude();
bool canGetLocation();
}
}
using System;
using Android.App;
using Android.Gms.Location;
using Android.Gms.Common.Apis;
using Android.OS;
using Android.Gms.Maps.Model;
using Android.Widget;
using Android.Locations;
using Android.Gms.Common;
using Android.Gms.Maps;
namespace Maps.Droid.LocationService {
public class FusedLocation : Java.Lang.Object, GoogleApiClient.IConnectionCallbacks, GoogleApiClient.IOnConnectionFailedListener, Android.Gms.Location.ILocationListener {
private Activity activity;
private GoogleApiClient mGoogleApiClient;
private LocationRequest mLocationRequest;
private Location currentLocation;
private bool locationAvailable = false;
private GoogleMap map;
public FusedLocation(Activity activity) {
this.activity = activity;
mLocationRequest = new LocationRequest();
mLocationRequest.SetInterval(LocationTracker.MIN_TIME_BW_UPDATES);
mLocationRequest.SetFastestInterval(LocationTracker.MIN_TIME_BW_UPDATES / 2);
mLocationRequest.SetSmallestDisplacement(LocationTracker.MIN_DISTANCE_CHANGE_FOR_UPDATES);
mLocationRequest.SetPriority(LocationRequest.PriorityHighAccuracy);
mGoogleApiClient = new GoogleApiClient.Builder(Application.Context)
.AddConnectionCallbacks(this)
.AddOnConnectionFailedListener(this)
.AddApi(LocationServices.API)
.Build();
}
public Location getCurrentLocation() {
return currentLocation;
}
public void setMap(GoogleMap map) {
this.map = map;
}
public double getLatitude() {
return currentLocation.Latitude;
}
public double getLongitude() {
return currentLocation.Longitude;
}
public void OnResume() {
if (mGoogleApiClient.IsConnected) {
LocationServices.FusedLocationApi.RequestLocationUpdates(mGoogleApiClient, mLocationRequest, this);
}
}
public void OnPause() {
// Stop location updates to save battery, but don't disconnect the GoogleApiClient object.
if (mGoogleApiClient.IsConnected) {
LocationServices.FusedLocationApi.RemoveLocationUpdates(mGoogleApiClient, this);
}
}
public void OnStart() {
mGoogleApiClient?.Connect();
}
public void OnStop() {
// only stop if it's connected, otherwise we crash
if (mGoogleApiClient.IsConnected) {
mGoogleApiClient?.Disconnect();
}
}
public LatLng getLatLng() {
return new LatLng(currentLocation.Latitude, currentLocation.Longitude);
}
public bool canGetLocation() {
return locationAvailable && currentLocation != null;
}
public void OnConnected(Bundle connectionHint) {
// Get last known recent location. If the user launches the activity,
// moves to a new location, and then changes the device orientation, the original location
// is displayed as the activity is re-created.
currentLocation = LocationServices.FusedLocationApi.GetLastLocation(mGoogleApiClient);
if (currentLocation != null) {
locationAvailable = true;
LocationServices.FusedLocationApi.RequestLocationUpdates(mGoogleApiClient, mLocationRequest, this);
if (map != null) {
map.AnimateCamera(CameraUpdateFactory.NewLatLngZoom(getLatLng(), LocationTracker.DEFAULT_ZOOM));
}
}
}
public void OnConnectionSuspended(int cause) {
// GoogleApiClient will automatically attempt to restore the connection.
// Applications should disable UI components that require the service, and wait for a call to onConnected(Bundle) to re-enable them
if (cause == GoogleApiClient.ConnectionCallbacks.CauseServiceDisconnected) {
Toast.MakeText(activity, "Location Services disconnected. Please re-connect.", ToastLength.Long).Show();
} else if (cause == GoogleApiClient.ConnectionCallbacks.CauseNetworkLost) {
Toast.MakeText(activity, "Network lost. Please re-connect.", ToastLength.Long).Show();
}
}
public void OnLocationChanged(Location location) {
currentLocation = location;
}
public void OnConnectionFailed(ConnectionResult result) {
Console.WriteLine("Connection failed: " + result.ToString());
}
}
}
using System;
using Android.OS;
using Android.Locations;
using Android.Runtime;
using Android.App;
using Android.Content;
using Android.Widget;
using Android.Gms.Maps.Model;
using Java.Util.Concurrent;
namespace Maps.Droid.LocationService {
public class AndroidLocation : Java.Lang.Object, ILocationListener {
// Properties
private LocationManager locMgr;
private Activity activity;
private Location locationGPS, locationNetwork/*, locationPassive*/, currentLocation;
private bool locationAvailable = false;
private Android.Gms.Maps.GoogleMap map;
// UNCOMMNET
// private bool isPassiveEnabled = false; // Gets location from other apps that uses Location Services
// Initializer method (Constructor). Call this method onCreate
public AndroidLocation(Activity activity) {
this.activity = activity;
getLocation();
}
public Location getCurrentLocation() {
return currentLocation;
}
public void setMap(Android.Gms.Maps.GoogleMap map) {
this.map = map;
}
private Location getLocation() {
// Use Standard Android Location Service Provider
try {
locMgr = activity.GetSystemService(Context.LocationService) as LocationManager;
bool isGPSEnabled = locMgr.IsProviderEnabled(LocationManager.GpsProvider);
// Varying precision, Less power consuming. Combination of WiFi and Cellular data
bool isNetworkEnabled = locMgr.IsProviderEnabled(LocationManager.NetworkProvider);
// UNCOMMENT
// bool isPassiveEnabled = locMgr.IsProviderEnabled(LocationManager.GpsProvider);
// UNCOMMNET
//if (isPassiveEnabled) {
// locMgr.RequestLocationUpdates(LocationManager.PassiveProvider, MIN_TIME_BW_UPDATES, MIN_DISTANCE_CHANGE_FOR_UPDATES, this);
// locationPassive = locMgr.GetLastKnownLocation(LocationManager.PassiveProvider);
//}
if (isGPSEnabled) {
locMgr.RequestLocationUpdates(LocationManager.GpsProvider, LocationTracker.MIN_TIME_BW_UPDATES, LocationTracker.MIN_DISTANCE_CHANGE_FOR_UPDATES, this);
locationGPS = locMgr?.GetLastKnownLocation(LocationManager.GpsProvider);
}
if (isNetworkEnabled) {
locMgr.RequestLocationUpdates(LocationManager.NetworkProvider, LocationTracker.MIN_TIME_BW_UPDATES, LocationTracker.MIN_DISTANCE_CHANGE_FOR_UPDATES, this);
locationNetwork = locMgr?.GetLastKnownLocation(LocationManager.NetworkProvider);
}
// UNCOMMENT - Method must be implement if PassiveLocation is to be used
// currentLocation = getBestLocation(locationGPS, locationNetwork, locationPassive);
currentLocation = getBestLocation(locationNetwork, locationGPS);
if (currentLocation != null) {
locationAvailable = true;
if (map != null) {
map.AnimateCamera(Android.Gms.Maps.CameraUpdateFactory.NewLatLngZoom(getLatLng(), LocationTracker.DEFAULT_ZOOM));
}
}
} catch (Exception e) {
Console.WriteLine("ERROR: getLocation() " + e.ToString());
}
return currentLocation;
}
// Determines the most recent and/or most accurate location
private Location getBestLocation(Location loc1, Location loc2) {
if (loc1 == null || loc2 == null) {
return loc1 ?? loc2; // If either location is null then return the not null location
}
long time1 = TimeUnit.Milliseconds.ToSeconds(loc1.Time);
long time2 = TimeUnit.Milliseconds.ToSeconds(loc2.Time);
long twiceUpdate = (LocationTracker.MIN_TIME_BW_UPDATES / 1000) * 2;
if (Math.Abs(time1 - time2) > twiceUpdate) { // If location times are more than twiceUpdate apart
if (time1 > time2) { // More time value, most current time
return loc1;
} else {
return loc2;
}
} else {
float accuracy1 = loc1.Accuracy;
float accuracy2 = loc2.Accuracy;
// Smaller the value (meters), the greater the accuracy
if (accuracy1 < accuracy2) {
return loc1;
} else {
return loc2;
}
}
}
public void OnStop() {
locMgr = null;
}
public void OnPause() {
locMgr?.RemoveUpdates(this);
}
public void OnStart() {
}
public void OnResume() {
if (locMgr == null || currentLocation == null) {
getLocation();
}
}
public bool canGetLocation() {
return locationAvailable;
}
public LatLng getLatLng() {
return new LatLng(currentLocation.Latitude, currentLocation.Longitude);
}
public double getLatitude() {
return currentLocation.Latitude;
}
public double getLongitude() {
return currentLocation.Longitude;
}
public void OnLocationChanged(Location location) {
currentLocation = getBestLocation(currentLocation, location);
}
// User disabled a provider
public void OnProviderDisabled(string provider) {
getLocation(); // Check if all providers are disabled and pop up alertDialog if they are so
}
// User enabled a provider
public void OnProviderEnabled(string provider) {
getLocation(); // Update all available providers for getting the best provider available
}
public void OnStatusChanged(string provider, [GeneratedEnum] Availability status, Bundle extras) {
}
}
}
using Android.App;
using Android.Gms.Common;
using Android.Gms.Common.Apis;
using Android.Gms.Maps.Model;
using Android.Gms.Maps;
using Android.Locations;
using Android.Content;
using Android.Widget;
namespace Maps.Droid.LocationService {
public class LocationTracker {
public static long MIN_DISTANCE_CHANGE_FOR_UPDATES = 5; // 5 meters
public static long MIN_TIME_BW_UPDATES = 1000 * 15; // 15 seconds ok, 5 seconds really fast, 30s slow
public static float DEFAULT_ZOOM = 16f;
private bool hasGooglePlayServices;
public GoogleApiClient mGoogleApiClient;
private FusedLocation fusedLocation;
private AndroidLocation androidLocation;
private bool locationIsDisabled;
public LocationTracker(Activity activity) {
if (locationIsDisabled = isLocationDisabled(activity)) {
showSettingsAlert(activity);
} else {
hasGooglePlayServices = checkPlayServices(activity);
if (hasGooglePlayServices) {
fusedLocation = new FusedLocation(activity);
} else {
androidLocation = new AndroidLocation(activity);
}
}
}
private void showSettingsAlert(Activity activity) {
AlertDialog.Builder builder = new AlertDialog.Builder(activity);
builder.SetTitle("Location Services Not Active");
builder.SetMessage("Please enable Location Services and GPS");
builder.SetPositiveButton("OK", delegate {
// Show location settings when the user acknowledges the alert dialog
var intent = new Intent(Android.Provider.Settings.ActionLocationSourceSettings);
activity.StartActivity(intent);
});
builder.SetNegativeButton("Cancel", delegate {
Toast.MakeText(activity, "Location disabled by user", ToastLength.Short).Show();
});
AlertDialog alertDialog = builder.Create();
alertDialog.SetCanceledOnTouchOutside(false);
alertDialog.Show();
}
private bool isLocationDisabled(Activity activity) {
LocationManager locMgr = activity.GetSystemService(Context.LocationService) as LocationManager;
// More precise, More power consuming
bool isGPSEnabled = locMgr.IsProviderEnabled(LocationManager.GpsProvider);
// Varying precision, Less power consuming. Combination of WiFi and Cellular data
bool isNetworkEnabled = locMgr.IsProviderEnabled(LocationManager.NetworkProvider);
// UNCOMMENT
// bool isPassiveEnabled = locMgr.IsProviderEnabled(LocationManager.PassiveProvider);
// UNCOMMENT
// return !isGPSEnabled && !isNetworkEnabled && !isPassiveEnabled; // True only when the 3 location services are disabled
return !isGPSEnabled && !isNetworkEnabled; // True only when both location services are disabled
}
// Call this method at OnMapReady callback if initial zooming/animation on user's location is desired
public void setMap(GoogleMap map) {
if (locationIsDisabled) {
return;
}
if (hasGooglePlayServices) {
fusedLocation.setMap(map);
} else {
androidLocation.setMap(map);
}
}
public void OnResume() {
if (locationIsDisabled) {
return;
}
if (hasGooglePlayServices) {
fusedLocation.OnResume();
} else {
androidLocation.OnResume();
}
}
public void OnPause() {
if (locationIsDisabled) {
return;
}
if (hasGooglePlayServices) {
fusedLocation.OnPause();
} else {
androidLocation.OnPause();
}
}
public void OnStart() {
if (locationIsDisabled) {
return;
}
if (hasGooglePlayServices) {
fusedLocation.OnStart();
} else {
androidLocation.OnStart();
}
}
public void OnStop() {
if (locationIsDisabled) {
return;
}
if (hasGooglePlayServices) {
fusedLocation.OnStop();
} else {
androidLocation.OnStop();
}
}
private bool checkPlayServices(Activity activity) {
GoogleApiAvailability apiAvailability = GoogleApiAvailability.Instance;
int resultCode = apiAvailability.IsGooglePlayServicesAvailable(activity);
if (resultCode == ConnectionResult.Success) {
return true;
}
return false;
}
public double getLatitude() {
if (locationIsDisabled) {
return 0;
}
if (hasGooglePlayServices) {
return fusedLocation.getCurrentLocation() == null ? 0.0 : fusedLocation.getLatitude();
} else {
return androidLocation.getCurrentLocation() == null ? 0.0 : androidLocation.getLatitude();
}
}
public double getLongitude() {
if (locationIsDisabled) {
return 0;
}
if (hasGooglePlayServices) {
return fusedLocation.getCurrentLocation() == null ? 0.0 : fusedLocation.getLongitude();
} else {
return androidLocation.getCurrentLocation() == null ? 0.0 : androidLocation.getLongitude();
}
}
public bool canGetLocation() {
if (locationIsDisabled) {
return false;
}
if (hasGooglePlayServices) {
return fusedLocation.canGetLocation();
} else {
return androidLocation.canGetLocation();
}
}
public LatLng getLatLng() {
if (locationIsDisabled) {
return null;
}
LatLng latlng;
if (hasGooglePlayServices) {
latlng = fusedLocation.getLatLng();
} else {
latlng = androidLocation.getLatLng();
}
return latlng;
}
public Location getCurrentLocation() {
if (hasGooglePlayServices) {
return fusedLocation.getCurrentLocation();
} else {
return androidLocation.getCurrentLocation();
}
}
}
}
Then to use it on your fragment or activity:
Initialise it at OnCreate:
Location tracker = new LocationTracker(this.Activity);
make a referent for the life cycles:
public override void OnResume() {
base.OnResume();
tracker.OnResume();
}
public override void OnPause() {
base.OnPause();
tracker.OnPause();
}
public override void OnStart() {
base.OnStart();
tracker.OnStart();
}
public override void OnStop() {
base.OnStop();
tracker.OnStop();
}
if you want the animation to zoom at the users location in the beginning, then you have to add this line of code when you have the googlemap:
tracker.setMap(googleMap); // Invoke this method if zooming/animating to the user's location is desired
Spent many days on this solution. Hope it can help somebody!
I'm trying to build an extension to the team explorer in Visual Studio 2013. I've found the blog at http://31og.com/post/getting-start-with-a-team-explorer-plugin-for-vs-2013-part-3 which goes through the steps for adding a navigation item and a page but when I run the project I do not see the extension.
There are no errors in the output. I can see the constructor being called but nothing is added to team explorer.
Here is our current code:
namespace UoA.Cecil.VsTools.WindowPanes
{
using System;
using System.ComponentModel;
using System.ComponentModel.Composition;
using System.Drawing;
using System.Runtime.CompilerServices;
using Microsoft.TeamFoundation.Controls;
using Microsoft.VisualStudio.Shell;
[TeamExplorerNavigationItem(TeamExplorerGuids.TimesheetNavigationItem, 100)]
public class TimesheetTeamExplorerNavigationItem
: ITeamExplorerNavigationItem
{
private readonly IServiceProvider serviceProvider;
private bool isVisible;
[ImportingConstructor]
public TimesheetTeamExplorerNavigationItem([Import(typeof(SVsServiceProvider))] IServiceProvider serviceProvider)
{
this.serviceProvider = serviceProvider;
}
public event PropertyChangedEventHandler PropertyChanged;
public Image Image
{
get { return Resources.TimesheetImage; }
}
public bool IsVisible
{
get { return this.isVisible; }
private set
{
this.isVisible = value;
this.FirePropertyChanged();
}
}
public string Text
{
get { return "Timesheet"; }
}
public void Dispose()
{
}
public void Execute()
{
// Do something here
}
public T GetService<T>()
{
if (this.serviceProvider != null)
{
return (T)this.serviceProvider.GetService(typeof(T));
}
return default(T);
}
public void Invalidate()
{
}
private void FirePropertyChanged([CallerMemberName] string propertyName = null)
{
if (this.PropertyChanged != null)
{
this.PropertyChanged(this, new PropertyChangedEventArgs(propertyName));
}
}
}
}
Any ideas on why this would be happening?
You will be able to see the button often when you are connected to the Team Project. Verify if CurrentContext property is not null and carries your connected TFS context.
Alternatively, you can also verify if your serviceProvider field in the constructor is not null.
The visibility is usually handled in Invalidate method as below. I have implemented below for my Team Rooms extension.
public override void Invalidate()
{
if (CurrentContext != null && CurrentContext.HasCollection && CurrentContext.HasTeamProject)
{
IsVisible = true;
}
else
{
IsVisible = false;
}
}