import java.util.Locale;
import android.app.ActionBar;
-import android.database.Cursor;
-import android.database.sqlite.SQLiteDatabase;
+import android.app.Activity;
+import android.app.Dialog;
+import android.content.Context;
+import android.content.Intent;
+import android.content.IntentSender;
import android.location.Address;
import android.location.Geocoder;
+import android.location.Location;
import android.os.AsyncTask;
+import android.os.Build;
import android.os.Bundle;
import android.support.v4.app.DialogFragment;
import android.support.v4.app.FragmentActivity;
import android.util.Log;
import android.view.View;
import android.widget.TextView;
+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.maps.CameraUpdateFactory;
import com.google.android.gms.maps.GoogleMap;
import com.google.android.gms.maps.GoogleMap.OnMapLongClickListener;
import com.google.android.gms.maps.model.MarkerOptions;
import de.example.exampletdd.fragment.ErrorDialogFragment;
+import de.example.exampletdd.fragment.ProgressDialogFragment;
+import de.example.exampletdd.gms.GPlayServicesErrorDialogFragment;
import de.example.exampletdd.model.WeatherLocation;
-import de.example.exampletdd.model.WeatherLocationContract;
import de.example.exampletdd.model.WeatherLocationDbHelper;
import de.example.exampletdd.model.WeatherLocationDbQueries;
-public class MapActivity extends FragmentActivity {
+/**
+ * {@link http://developer.android.com/training/location/retrieve-current.html}
+ *
+ */
+public class MapActivity extends FragmentActivity implements
+ GooglePlayServicesClient.ConnectionCallbacks,
+ GooglePlayServicesClient.OnConnectionFailedListener {
+ private static final String TAG = "MapActivity";
+ private static final int CONNECTION_FAILURE_RESOLUTION_REQUEST = 9000;
+ private WeatherLocation mRestoreUI;
+
+ // Google Play Services Map
private GoogleMap mMap;
// TODO: read and store from different threads
private Marker mMarker;
- private WeatherLocation mRestoreUI;
+
+ // Google Play Services Location
+ // Stores the current instantiation of the location client in this object
+ private LocationClient mLocationClient;
@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 Map
final MapFragment mapFragment = (MapFragment) this.getFragmentManager()
.findFragmentById(R.id.map);
this.mMap = mapFragment.getMap();
this.mMap.setMyLocationEnabled(false);
this.mMap.getUiSettings().setCompassEnabled(false);
- this.mMap.setOnMapLongClickListener(new OnMapLongClickListener() {
-
- @Override
- public void onMapLongClick(final LatLng point) {
- final LocationAsyncTask geocoderAsyncTask = new LocationAsyncTask();
- geocoderAsyncTask.execute(point.latitude, point.longitude);
- }
- });
+ this.mMap.setOnMapLongClickListener(new MapActivityOnMapLongClickListener(this));
}
@Override
}
if (weatherLocation != null) {
- this.updateMap(weatherLocation);
+ this.updateUI(weatherLocation);
}
}
}
public void onClickGetLocation(final View v) {
-
+ // 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();
+ }
+ } else {
+ // TODO: string resource
+ Toast.makeText(this, "You are not yet connected to Google Play Services.", Toast.LENGTH_LONG).show();
+ }
+ }
}
-
+
private WeatherLocation queryDataBase() {
- final String selection = WeatherLocationContract.WeatherLocation.COLUMN_NAME_IS_SELECTED + " = ?";
- final String[] selectionArgs = { "1" };
- final String[] projection = {
- WeatherLocationContract.WeatherLocation._ID,
- WeatherLocationContract.WeatherLocation.COLUMN_NAME_CITY,
- WeatherLocationContract.WeatherLocation.COLUMN_NAME_COUNTRY,
- WeatherLocationContract.WeatherLocation.COLUMN_NAME_IS_SELECTED,
- WeatherLocationContract.WeatherLocation.COLUMN_NAME_LAST_CURRENT_UI_UPDATE,
- WeatherLocationContract.WeatherLocation.COLUMN_NAME_LAST_FORECAST_UI_UPDATE,
- WeatherLocationContract.WeatherLocation.COLUMN_NAME_LATITUDE,
- WeatherLocationContract.WeatherLocation.COLUMN_NAME_LONGITUDE
- };
final WeatherLocationDbHelper dbHelper = new WeatherLocationDbHelper(this);
try {
- final WeatherLocationDbQueries queryDb = new WeatherLocationDbQueries(dbHelper);
- final WeatherLocationDbQueries.DoQuery doQuery = new WeatherLocationDbQueries.DoQuery() {
-
- @Override
- public WeatherLocation doQuery(final Cursor cursor) {
- String city = cursor.getString(cursor.
- getColumnIndexOrThrow(WeatherLocationContract.WeatherLocation.COLUMN_NAME_CITY));
- String country = cursor.getString(cursor.
- getColumnIndexOrThrow(WeatherLocationContract.WeatherLocation.COLUMN_NAME_COUNTRY));
- double latitude = cursor.getDouble(cursor.
- getColumnIndexOrThrow(WeatherLocationContract.WeatherLocation.COLUMN_NAME_LATITUDE));
- double longitude = cursor.getDouble(cursor.
- getColumnIndexOrThrow(WeatherLocationContract.WeatherLocation.COLUMN_NAME_LONGITUDE));
-
- return new WeatherLocation.Builder().
- setCity(city).setCountry(country).
- setLatitude(latitude).setLongitude(longitude).
- build();
- }
-
- };
-
- return queryDb.queryDataBase(
- WeatherLocationContract.WeatherLocation.TABLE_NAME, projection,
- selectionArgs, selection, doQuery);
+ final WeatherLocationDbQueries queryDb = new WeatherLocationDbQueries(dbHelper);
+ return queryDb.queryDataBase(this);
} finally {
dbHelper.close();
}
}
- private void updateMap(final WeatherLocation weatherLocation) {
+ private void updateUI(final WeatherLocation weatherLocation) {
final TextView city = (TextView) this.findViewById(R.id.weather_map_city);
final TextView country = (TextView) this.findViewById(R.id.weather_map_country);
this.mMap.animateCamera(CameraUpdateFactory.zoomTo(8), 2000, null);
}
- private class LocationAsyncTask extends AsyncTask<Object, Void, WeatherLocation> {
- private static final String TAG = "LocationAsyncTask";
+ private class GetAddressTask extends AsyncTask<Object, Void, WeatherLocation> {
+ private static final String TAG = "GetAddressTask";
+ // Store the context passed to the AsyncTask when the system instantiates it.
+ private final Context localContext;
+ private final DialogFragment newFragment;
+ private GetAddressTask(final Context context) {
+ this.localContext = context;
+ this.newFragment = ProgressDialogFragment.newInstance(
+ R.string.progress_dialog_get_remote_data,
+ this.localContext.getString(R.string.progress_dialog_generic_message));
+ }
+
+ @Override
+ protected void onPreExecute() {
+ // TODO: The same with Overview and Current? I guess so...
+ final FragmentActivity activity = (FragmentActivity) this.localContext;
+ this.newFragment.show(activity.getSupportFragmentManager(), "progressDialog");
+ }
+
@Override
protected WeatherLocation doInBackground(final Object... params) {
final double latitude = (Double) params[0];
try {
weatherLocation = this.getLocation(latitude, longitude);
} catch (final IOException e) {
- Log.e(TAG, "LocationAsyncTask doInBackground exception: ", e);
+ Log.e(TAG, "GetAddressTask doInBackground exception: ", e);
}
return weatherLocation;
@Override
protected void onPostExecute(final WeatherLocation weatherLocation) {
+ this.newFragment.dismiss();
+
// TODO: Is AsyncTask calling this method even when RunTimeException in doInBackground method?
// I hope so, otherwise I must catch(Throwable) in doInBackground method :(
if (weatherLocation == null) {
+ final FragmentActivity activity = (FragmentActivity) this.localContext;
// TODO: if user changed activity, where is this going to appear?
final DialogFragment newFragment = ErrorDialogFragment.newInstance(R.string.error_dialog_location_error);
- newFragment.show(MapActivity.this.getSupportFragmentManager(),
- "errorDialog");
+ newFragment.show(activity.getSupportFragmentManager(), "errorDialog");
return;
}
- MapActivity.this.updateMap(weatherLocation);
+ final MapActivity activity = (MapActivity) this.localContext;
+ activity.updateUI(weatherLocation);
}
-
+
private WeatherLocation getLocation(final double latitude, final double longitude) throws IOException {
- final Geocoder geocoder = new Geocoder(MapActivity.this, Locale.US);
+ // TODO: i18n Locale.getDefault()
+ final Geocoder geocoder = new Geocoder(this.localContext, Locale.US);
final List<Address> addresses = geocoder.getFromLocation(latitude, longitude, 1);
// Default values
- String city = MapActivity.this.getString(R.string.city_not_found);
- String country = MapActivity.this.getString(R.string.country_not_found);
+ String city = this.localContext.getString(R.string.city_not_found);
+ String country = this.localContext.getString(R.string.country_not_found);
if (addresses == null || addresses.size() <= 0) {
if (addresses.get(0).getLocality() != null) {
city = addresses.get(0).getLocality();
}
}
+
+ private class MapActivityOnMapLongClickListener implements OnMapLongClickListener {
+ // Store the context passed to the AsyncTask when the system instantiates it.
+ private final Context localContext;
+
+ private MapActivityOnMapLongClickListener(final Context context) {
+ this.localContext = context;
+ }
+
+ @Override
+ public void onMapLongClick(final LatLng point) {
+ final MapActivity activity = (MapActivity) this.localContext;
+ activity.getAddressAndUpdateUI(point.latitude, point.longitude);
+ }
+
+ }
+
+ /************************ Google Play Services ************************/
+
+ /**
+ * Getting the address of the current location, using reverse geocoding only works if
+ * a geocoding service is available.
+ *
+ */
+ private void getAddressAndUpdateUI(final double latitude, final double longitude) {
+
+ // 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);
+ }
+ } 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);
+ }
+
+ /**
+ * Verify that Google Play services is available before making a request.
+ *
+ * @return true if Google Play services is available, otherwise false
+ */
+ private boolean servicesConnected() {
+
+ // Check that Google Play services is available
+ final int resultCode = GooglePlayServicesUtil.isGooglePlayServicesAvailable(this);
+
+ // If Google Play services is available
+ if (ConnectionResult.SUCCESS == resultCode) {
+ // In debug mode, log the status
+ Log.d(TAG, "Google Play Services is available.");
+
+ // Continue
+ return true;
+ // Google Play services was not available for some reason
+ } else {
+ // Display an error dialog
+ final Dialog dialog = GooglePlayServicesUtil.getErrorDialog(resultCode, this, 0);
+ if (dialog != null) {
+ final GPlayServicesErrorDialogFragment errorFragment = new GPlayServicesErrorDialogFragment();
+ errorFragment.setDialog(dialog);
+ errorFragment.show(getSupportFragmentManager(), TAG);
+ }
+ return false;
+ }
+ }
+
+ /************************ Google Play Services Location ************************/
+
+ /*
+ * Called when the Activity is started/restarted, even before it becomes visible.
+ */
+ @Override
+ protected void onStart() {
+ super.onStart();
+
+ /*
+ * Connect the client. Don't re-start any requests here;
+ * instead, wait for onResume()
+ */
+ mLocationClient.connect();
+ }
+
+ /*
+ * Called when the Activity is no longer visible at all.
+ * Disconnect.
+ */
+ @Override
+ public void onStop() {
+
+ // Disconnecting the client invalidates it.
+ // After disconnect() is called, the client is considered "dead".
+ mLocationClient.disconnect();
+
+ super.onStop();
+ }
+
+ @Override
+ public void onConnected(final Bundle bundle) {
+ // TODO: Why should some user care about this? Could I skip this message?
+ // TODO: string resource
+ 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) {
+ /*
+ * 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()) {
+ try {
+ // Start an Activity that tries to resolve the error
+ connectionResult.startResolutionForResult(
+ this, CONNECTION_FAILURE_RESOLUTION_REQUEST);
+ /*
+ * Thrown if Google Play services canceled the original
+ * PendingIntent
+ */
+ } catch (final IntentSender.SendIntentException e) {
+ // Log the error
+ }
+ } else {
+ /*
+ * If no resolution is available, display a dialog to the
+ * user with the error.
+ */
+ showErrorDialog(connectionResult.getErrorCode());
+ }
+ }
+
+ /*
+ * Handle results returned to this Activity by other Activities started with
+ * startActivityForResult(). In particular, the method onConnectionFailed() in
+ * LocationUpdateRemover and LocationUpdateRequester may call startResolutionForResult() to
+ * start an Activity that handles Google Play services problems. The result of this
+ * call returns here, to onActivityResult.
+ */
+ @Override
+ protected void onActivityResult(final int requestCode, final int resultCode, final Intent intent) {
+
+ // Choose what to do based on the request code
+ switch (requestCode) {
+
+ // If the request code matches the code sent in onConnectionFailed
+ case CONNECTION_FAILURE_RESOLUTION_REQUEST :
+ 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");
+
+ // 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;
+ }
+ // If any other request code was received
+ default:
+ // TODO: show some error?
+ // Report that this Activity received an unknown requestCode
+ Log.d(TAG, "Received an unknown activity request code onActivityResult. Request code: " + requestCode);
+ break;
+ }
+ }
+
+ private void showErrorDialog(final int errorCode) {
+
+ // Get the error dialog from Google Play services
+ final Dialog errorDialog = GooglePlayServicesUtil.getErrorDialog(
+ errorCode, this, CONNECTION_FAILURE_RESOLUTION_REQUEST);
+
+ // 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();
+
+ // Set the dialog in the DialogFragment
+ GPSErrorFragment.setDialog(errorDialog);
+
+ // Show the error dialog in the DialogFragment
+ GPSErrorFragment.show(this.getSupportFragmentManager(), TAG);
+ }
+ }
}
projects / JavaForFun / commitdiff