import android.app.Dialog;
import android.content.Context;
import android.content.Intent;
-import android.content.IntentSender;
+import android.content.IntentSender.SendIntentException;
import android.location.Address;
import android.location.Geocoder;
import android.location.Location;
import android.widget.Toast;
import com.google.android.gms.common.ConnectionResult;
-import com.google.android.gms.common.GooglePlayServicesClient;
import com.google.android.gms.common.GooglePlayServicesUtil;
-import com.google.android.gms.location.LocationClient;
+import com.google.android.gms.common.api.GoogleApiClient;
+import com.google.android.gms.location.FusedLocationProviderApi;
+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.GoogleMap.OnMapLongClickListener;
import de.example.exampletdd.model.WeatherLocationDbHelper;
import de.example.exampletdd.model.WeatherLocationDbQueries;
-/**
- * {@link http://developer.android.com/training/location/retrieve-current.html}
- *
- */
public class MapActivity extends FragmentActivity implements
- GooglePlayServicesClient.ConnectionCallbacks,
- GooglePlayServicesClient.OnConnectionFailedListener {
+ GoogleApiClient.ConnectionCallbacks,
+ GoogleApiClient.OnConnectionFailedListener,
+ LocationListener {
private static final String TAG = "MapActivity";
- private static final int CONNECTION_FAILURE_RESOLUTION_REQUEST = 9000;
+ // Request code to use when launching the resolution activity
+ private static final int REQUEST_RESOLVE_ERROR = 1001;
private WeatherLocation mRestoreUI;
// Google Play Services Map
private GoogleMap mMap;
- // TODO: read and store from different threads
+ // TODO: read and store from different threads? Hopefully always from UI thread.
private Marker mMarker;
// Google Play Services Location
- // Stores the current instantiation of the location client in this object
- private LocationClient mLocationClient;
+ private GoogleApiClient mGoogleApiClient;
+ // Boolean to track whether the app is already resolving an error
+ // TODO: Store/read from UI thread?
+ private boolean mResolvingError;
@Override
protected void onCreate(final Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
this.setContentView(R.layout.weather_map);
- // Google Play Services Location
- /*
- * Create a new location client, using the enclosing class to
- * handle callbacks.
- */
- mLocationClient = new LocationClient(this, this, this);
-
+ // Google Play Services
+ // Restore resolving error (for example if user rotates the screen)
+ // It must be done (I guess) before onRestoreInstanceState because its value
+ // is used by onStart method.
+ if (savedInstanceState != null) {
+ mResolvingError = savedInstanceState.getBoolean("mResolvingError", false);
+ }
+ // Google Play Services Location
+ mGoogleApiClient = new GoogleApiClient.Builder(this)
+ .addApi(LocationServices.API)
+ .addConnectionCallbacks(this)
+ .addOnConnectionFailedListener(this)
+ .build();
// Google Play Services Map
final MapFragment mapFragment = (MapFragment) this.getFragmentManager()
.findFragmentById(R.id.map);
-
this.mMap = mapFragment.getMap();
this.mMap.setMyLocationEnabled(false);
this.mMap.getUiSettings().setCompassEnabled(false);
build();
savedInstanceState.putSerializable("WeatherLocation", location);
}
+
+ // Google Play Services
+ // To keep track of the boolean across activity restarts (such as when
+ // the user rotates the screen), save the boolean in the activity's saved
+ // instance data using onSaveInstanceState():
+ savedInstanceState.putBoolean("mResolvingError", this.mResolvingError);
super.onSaveInstanceState(savedInstanceState);
}
}
public void onClickGetLocation(final View v) {
+ // TODO: Somehow I should show a progress dialog.
// If Google Play Services is available
if (servicesConnected()) {
- if (mLocationClient.isConnected()) {
- // Get the current location
- // TODO: DO NOT USE IT!!! http://stackoverflow.com/questions/17265722/locationclient-does-not-update-getlastlocation-on-emulator
- // USE THIS INSTEAD: http://developer.android.com/reference/com/google/android/gms/location/LocationClient.html#requestLocationUpdates(com.google.android.gms.location.LocationRequest, com.google.android.gms.location.LocationListener)
- final Location currentLocation = mLocationClient.getLastLocation();
-
- if (currentLocation != null) {
- // Display the current location in the UI
- this.getAddressAndUpdateUI(currentLocation.getLatitude(), currentLocation.getLongitude());
- } else {
- // Location is not available
- // TODO: string resource
- Toast.makeText(this, "Location is not available.", Toast.LENGTH_LONG).show();
- }
+ if (this.mGoogleApiClient.isConnected()) {
+ // TODO: Hopefully there will be results even if location did not change...
+ final LocationRequest locationRequest = LocationRequest.create();
+ locationRequest.setPriority(LocationRequest.PRIORITY_HIGH_ACCURACY);
+ locationRequest.setInterval(1000);
+ final FusedLocationProviderApi fusedLocationApi = LocationServices.FusedLocationApi;
+ fusedLocationApi.requestLocationUpdates(mGoogleApiClient, locationRequest, this);
} else {
// TODO: string resource
Toast.makeText(this, "You are not yet connected to Google Play Services.", Toast.LENGTH_LONG).show();
}
}
- return new WeatherLocation.Builder().
- setLatitude(latitude).setLongitude(longitude).
- setCity(city).setCountry(country).
- build();
+ return new WeatherLocation.Builder()
+ .setLatitude(latitude).setLongitude(longitude)
+ .setCity(city).setCountry(country)
+ .build();
}
}
}
- /************************ Google Play Services ************************/
+ /*****************************************************************************************************
+ *
+ * Google Play Services
+ *
+ * ***************************************************************************************************/
/**
* Getting the address of the current location, using reverse geocoding only works if
// In Gingerbread and later, use Geocoder.isPresent() to see if a geocoder is available.
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.GINGERBREAD && Geocoder.isPresent()) {
- if (servicesConnected()) {
-
- // Start the background task
- final GetAddressTask geocoderAsyncTask = new GetAddressTask(this);
- geocoderAsyncTask.execute(latitude, longitude);
- }
+ // Start the background task
+ final GetAddressTask geocoderAsyncTask = new GetAddressTask(this);
+ geocoderAsyncTask.execute(latitude, longitude);
} else {
// No geocoder is present. Issue an error message.
// TODO: string resource
Toast.makeText(this, "Cannot get address. No geocoder available.", Toast.LENGTH_LONG).show();
- }
-
- // Default values
- final String city = this.getString(R.string.city_not_found);
- final String country = this.getString(R.string.country_not_found);
- final WeatherLocation weatherLocation = new WeatherLocation.Builder().
- setLatitude(latitude).setLongitude(longitude).
- setCity(city).setCountry(country).
- build();
-
- updateUI(weatherLocation);
+
+ // Default values
+ final String city = this.getString(R.string.city_not_found);
+ final String country = this.getString(R.string.country_not_found);
+ final WeatherLocation weatherLocation = new WeatherLocation.Builder().
+ setLatitude(latitude).setLongitude(longitude).
+ setCity(city).setCountry(country).
+ build();
+
+ updateUI(weatherLocation);
+ }
}
/**
// Display an error dialog
final Dialog dialog = GooglePlayServicesUtil.getErrorDialog(resultCode, this, 0);
if (dialog != null) {
- final GPlayServicesErrorDialogFragment errorFragment = new GPlayServicesErrorDialogFragment();
+ final GPlayServicesErrorDialogFragment errorFragment = new GPlayServicesErrorDialogFragment(this);
errorFragment.setDialog(dialog);
errorFragment.show(getSupportFragmentManager(), TAG);
}
}
}
- /************************ Google Play Services Location ************************/
+ /*****************************************************************************************************
+ *
+ * Google Play Services
+ *
+ * GoogleApiClient.ConnectionCallbacks
+ * GoogleApiClient.OnConnectionFailedListener
+ *
+ * ***************************************************************************************************/
/*
* Called when the Activity is started/restarted, even before it becomes visible.
* Connect the client. Don't re-start any requests here;
* instead, wait for onResume()
*/
- mLocationClient.connect();
+ if (!mResolvingError) {
+ mGoogleApiClient.connect();
+ }
}
/*
// Disconnecting the client invalidates it.
// After disconnect() is called, the client is considered "dead".
- mLocationClient.disconnect();
+ mGoogleApiClient.disconnect();
super.onStop();
}
+ @Override
+ public void onConnectionSuspended(int cause) {
+ // The connection has been interrupted.
+ // Disable any UI components that depend on Google APIs
+ // until onConnected() is called.
+
+ // TODO: What to do here? The same as onDisconnected?
+ }
+
@Override
public void onConnected(final Bundle bundle) {
// TODO: Why should some user care about this? Could I skip this message?
Toast.makeText(this, "Connected to Google Play Services.", Toast.LENGTH_SHORT).show();
}
- @Override
- public void onDisconnected() {
- // TODO: What should the user do in this case? Perhaps this method is called after onStop() by mLocationClient.disconnect()
- // TODO: string resource
- Toast.makeText(this, "Client disconnected from Google Play Services.", Toast.LENGTH_SHORT).show();
- }
-
/*
* Called by Location Services if the attempt to
* Location Services fails.
*/
@Override
- public void onConnectionFailed(final ConnectionResult connectionResult) {
+ public void onConnectionFailed(final ConnectionResult result) {
+ // TODO: Hopefully being called from UI see onDialogDismissed for concerns...
/*
* Google Play services can resolve some errors it detects.
* If the error has a resolution, try sending an Intent to
* start a Google Play services activity that can resolve
* error.
*/
- if (connectionResult.hasResolution()) {
+ if (mResolvingError) {
+ // Already attempting to resolve an error.
+ return;
+ } else if (result.hasResolution()) {
+ mResolvingError = true;
try {
// Start an Activity that tries to resolve the error
- connectionResult.startResolutionForResult(
- this, CONNECTION_FAILURE_RESOLUTION_REQUEST);
+ result.startResolutionForResult(this, REQUEST_RESOLVE_ERROR);
/*
* Thrown if Google Play services canceled the original
* PendingIntent
*/
- } catch (final IntentSender.SendIntentException e) {
- // Log the error
+ } catch (final SendIntentException e) {
+ // There was an error with the resolution intent. Try again.
+ mGoogleApiClient.connect();
}
} else {
+ // Show dialog using GooglePlayServicesUtil.getErrorDialog()
/*
* If no resolution is available, display a dialog to the
* user with the error.
*/
- showErrorDialog(connectionResult.getErrorCode());
+ showErrorDialog(result.getErrorCode());
+ mResolvingError = true;
}
}
switch (requestCode) {
// If the request code matches the code sent in onConnectionFailed
- case CONNECTION_FAILURE_RESOLUTION_REQUEST :
+ case REQUEST_RESOLVE_ERROR :
+ mResolvingError = false;
switch (resultCode) {
- // If Google Play services resolved the problem
- case Activity.RESULT_OK:
- // Log the result
- Log.d(TAG, "Error resolved. Please re-try operation");
+ // If Google Play services resolved the problem
+ case Activity.RESULT_OK:
+ // Log the result
+ Log.d(TAG, "Error resolved. Please re-try operation");
- // TODO: Should I call mLocationClient.connect() ? I GUESS SO!!!!
- // TODO: Display the result
- //mConnectionState.setText("Client connected");
- //mConnectionStatus.setText("Error resolved. Please re-try operation.");
- break;
- // If any other result was returned by Google Play services
- default:
- // Log the result
- Log.d(TAG, "Google Play services: unable to resolve connection error.");
-
- // TODO: Display the result
- //mConnectionState.setText("Client disconnected";
- //mConnectionStatus.setText("Google Play services: unable to resolve connection error.");
- break;
+ // Make sure the app is not already connected or attempting to connect
+ if (!mGoogleApiClient.isConnecting() && !mGoogleApiClient.isConnected()) {
+ mGoogleApiClient.connect();
+ }
+
+ // TODO: Display the result?
+ //mConnectionState.setText("Client connected");
+ //mConnectionStatus.setText("Error resolved. Please re-try operation.");
+ break;
+ // If any other result was returned by Google Play services
+ default:
+ // Log the result
+ Log.d(TAG, "Google Play services: unable to resolve connection error.");
+
+ // TODO: Display the result?
+ //mConnectionState.setText("Client disconnected";
+ //mConnectionStatus.setText("Google Play services: unable to resolve connection error.");
+ break;
}
// If any other request code was received
default:
// Get the error dialog from Google Play services
final Dialog errorDialog = GooglePlayServicesUtil.getErrorDialog(
- errorCode, this, CONNECTION_FAILURE_RESOLUTION_REQUEST);
+ errorCode, this, REQUEST_RESOLVE_ERROR);
// If Google Play services can provide an error dialog
if (errorDialog != null) {
// Create a new DialogFragment in which to show the error dialog
- final GPlayServicesErrorDialogFragment GPSErrorFragment = new GPlayServicesErrorDialogFragment();
+ final GPlayServicesErrorDialogFragment GPSErrorFragment = new GPlayServicesErrorDialogFragment(this);
// Set the dialog in the DialogFragment
GPSErrorFragment.setDialog(errorDialog);
// Show the error dialog in the DialogFragment
- GPSErrorFragment.show(this.getSupportFragmentManager(), TAG);
+ GPSErrorFragment.show(this.getSupportFragmentManager(), "GPlayServicesErrorDialog");
}
}
+
+ /* Called from GPlayServicesErrorDialogFragment when the dialog is dismissed. */
+ public void onDialogDismissed() {
+ mResolvingError = false;
+ }
+
+ /*****************************************************************************************************
+ *
+ * Google Play Services LocationListener
+ *
+ *****************************************************************************************************/
+ @Override
+ public void onLocationChanged(final Location location) {
+ // It was called from onClickGetLocation (UI thread) This method will run in the same thread (the UI thread)
+ // so, I do no think there should be any problem.
+
+ if (mGoogleApiClient.isConnected()) {
+ final FusedLocationProviderApi fusedLocationApi = LocationServices.FusedLocationApi;
+ // TODO: if user clicks many times onClickGetLocation I may not assure how many times
+ // onLocationChanged will be called. Is it a problem? AFAIK it isn't.
+ fusedLocationApi.removeLocationUpdates(mGoogleApiClient, this);
+ }
+
+ // Display the current location in the UI
+ // TODO: May location not be null?
+ this.getAddressAndUpdateUI(location.getLatitude(), location.getLongitude());
+ }
}
projects / JavaForFun / commitdiff