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The source code is released under:
GNU General Public License
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package com.ymelo.gpsdatacollector.app; //from ww w . j av a2 s . c om import android.app.Activity; import android.app.Dialog; import android.content.Context; import android.content.Intent; import android.content.IntentSender; import android.content.SharedPreferences; import android.location.Address; import android.location.Geocoder; import android.location.Location; import android.os.*; import android.support.v4.app.DialogFragment; import android.support.v4.app.Fragment; import android.util.Log; import android.view.LayoutInflater; import android.view.View; import android.view.ViewGroup; import android.widget.Button; import android.widget.ImageView; 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.location.LocationListener; import com.google.android.gms.location.LocationRequest; import com.ymelo.gpsdatacollector.app.utils.FileUtils; import com.ymelo.gpsdatacollector.app.utils.FragmentFix; import com.ymelo.gpsdatacollector.app.utils.LocationUtils; import java.io.FileOutputStream; import java.io.IOException; import java.util.List; import java.util.Locale; /** * Created by yohann on 04/01/15. */ public class RecordFragment extends FragmentFix implements LocationListener, GooglePlayServicesClient.ConnectionCallbacks, GooglePlayServicesClient.OnConnectionFailedListener{ private static final int RECORDING_BLINK_LEVEL_OFF = 0; private static final int RECORDING_BLINK_LEVEL_ON = 1; protected static final long DELAY_RECORDING_BLINK = 1000; public static final String TAG = "RecordFragment"; private boolean mIsRecording = false; // A request to connect to Location Services private LocationRequest mLocationRequest; // Stores the current instantiation of the location client in this object private LocationClient mLocationClient; // Handle to SharedPreferences for this app SharedPreferences mPrefs; // Handle to a SharedPreferences editor SharedPreferences.Editor mEditor; /* * Note if updates have been turned on. Starts out as "false"; is set to "true" in the * method handleRequestSuccess of LocationUpdateReceiver. * */ boolean mUpdatesRequested = false; private ImageView mRecording; private Button mStartStopRecording; Runnable mRecordingBlinkOn, mRecordingBlinkOff; private Handler mHandler; private String mFileName; @Override public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) { View rootView = inflater.inflate(R.layout.fragment_record, container, false); mRecording = (ImageView) rootView.findViewById(R.id.record_img_recording); mStartStopRecording = (Button) rootView.findViewById(R.id.record_btn_start_stop); mStartStopRecording.setOnClickListener(new View.OnClickListener() { @Override public void onClick(View v) { mIsRecording = !mIsRecording; if(mIsRecording) { mStartStopRecording.setText(getString(R.string.stop_recording)); mRecording.setVisibility(View.VISIBLE); startUpdates(null); } else { stopUpdates(null); mStartStopRecording.setText(getString(R.string.start_recording)); mRecording.setVisibility(View.GONE); } } }); return rootView; } /* * Initialize the Activity */ @Override public void onAttach(Activity activity) { super.onAttach(activity); // Create a new global location parameters object mLocationRequest = LocationRequest.create(); /* * Set the update interval */ mLocationRequest.setInterval(LocationUtils.UPDATE_INTERVAL_IN_MILLISECONDS); // Use high accuracy mLocationRequest.setPriority(LocationRequest.PRIORITY_HIGH_ACCURACY); // Set the interval ceiling to one minute mLocationRequest.setFastestInterval(LocationUtils.FAST_INTERVAL_CEILING_IN_MILLISECONDS); // Note that location updates are off until the user turns them on mUpdatesRequested = false; // Open Shared Preferences mPrefs = activity.getSharedPreferences(LocationUtils.SHARED_PREFERENCES, Context.MODE_PRIVATE); // Get an editor mEditor = mPrefs.edit(); /* * Create a new location client, using the enclosing class to * handle callbacks. */ mLocationClient = new LocationClient(activity, this, this); } /* * Called when the Activity is no longer visible at all. * Stop updates and disconnect. */ @Override public void onStop() { // If the client is connected if (mLocationClient.isConnected()) { // stopPeriodicUpdates(); } // After disconnect() is called, the client is considered "dead". // mLocationClient.disconnect(); super.onStop(); } /* * Called when the Activity is going into the background. * Parts of the UI may be visible, but the Activity is inactive. */ @Override public void onPause() { // Save the current setting for updates mEditor.putBoolean(LocationUtils.KEY_UPDATES_REQUESTED, mUpdatesRequested); mEditor.commit(); super.onPause(); } /* * Called when the Activity is restarted, even before it becomes visible. */ @Override public void onStart() { super.onStart(); /* * Connect the client. Don't re-start any requests here; * instead, wait for onResume() */ mLocationClient.connect(); } /* * Called when the system detects that this Activity is now visible. */ @Override public void onResume() { super.onResume(); // If the app already has a setting for getting location updates, get it if (mPrefs.contains(LocationUtils.KEY_UPDATES_REQUESTED)) { mUpdatesRequested = mPrefs.getBoolean(LocationUtils.KEY_UPDATES_REQUESTED, false); // Otherwise, turn off location updates until requested } else { mEditor.putBoolean(LocationUtils.KEY_UPDATES_REQUESTED, false); mEditor.commit(); } } /* * 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 public void onActivityResult(int requestCode, int resultCode, Intent intent) { // Choose what to do based on the request code switch (requestCode) { // If the request code matches the code sent in onConnectionFailed case LocationUtils.CONNECTION_FAILURE_RESOLUTION_REQUEST : switch (resultCode) { // If Google Play services resolved the problem case Activity.RESULT_OK: // Log the result Log.d(LocationUtils.APPTAG, getString(R.string.resolved)); break; // If any other result was returned by Google Play services default: // Log the result Log.d(LocationUtils.APPTAG, getString(R.string.no_resolution)); break; } // If any other request code was received default: // Report that this Activity received an unknown requestCode Log.d(LocationUtils.APPTAG, getString(R.string.unknown_activity_request_code, requestCode)); break; } } /** * 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 int resultCode = GooglePlayServicesUtil.isGooglePlayServicesAvailable(getActivity()); // If Google Play services is available if (ConnectionResult.SUCCESS == resultCode) { // In debug mode, log the status Log.d(LocationUtils.APPTAG, getString(R.string.play_services_available)); // Continue return true; // Google Play services was not available for some reason } else { // Display an error dialog Dialog dialog = GooglePlayServicesUtil.getErrorDialog(resultCode, getActivity(), 0); if (dialog != null) { ErrorDialogFragment errorFragment = new ErrorDialogFragment(); errorFragment.setDialog(dialog); // errorFragment.show(getChildFragmentManager(), LocationUtils.APPTAG); } return false; } } /** * Invoked by the "Get Location" button. * * Calls getLastLocation() to get the current location * * @param v The view object associated with this method, in this case a Button. */ public void getLocation(View v) { // If Google Play Services is available if (servicesConnected()) { // Get the current location Location currentLocation = mLocationClient.getLastLocation(); } } /** * Invoked by the "Get Address" button. * Get the address of the current location, using reverse geocoding. This only works if * a geocoding service is available. * * @param v The view object associated with this method, in this case a Button. */ public void getAddress(View v) { // 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()) { // No geocoder is present. Issue an error message Toast.makeText(getActivity(), R.string.no_geocoder_available, Toast.LENGTH_LONG).show(); return; } if (servicesConnected()) { // Get the current location Location currentLocation = mLocationClient.getLastLocation(); // Start the background task (new GetAddressTask(getActivity())).execute(currentLocation); } } private void startRecordingAnimation() { if(mHandler == null) { mHandler = new Handler(Looper.getMainLooper()); mRecordingBlinkOn = new Runnable() { @Override public void run() { if(mRecording != null) { mRecording.setImageLevel(RECORDING_BLINK_LEVEL_ON); mHandler.postDelayed(mRecordingBlinkOff, DELAY_RECORDING_BLINK); } } }; mRecordingBlinkOff = new Runnable() { @Override public void run() { if(mRecording != null) { mRecording.setImageLevel(RECORDING_BLINK_LEVEL_OFF); mHandler.postDelayed(mRecordingBlinkOn, DELAY_RECORDING_BLINK); } } }; } mHandler.postDelayed(mRecordingBlinkOn, 0); } public void stopRecordingAnimation() { if(mHandler != null) { mHandler.removeCallbacks(mRecordingBlinkOff); mHandler.removeCallbacks(mRecordingBlinkOn); if(mRecording != null) { mRecording.setImageLevel(RECORDING_BLINK_LEVEL_OFF); } } } /** * Invoked by the "Start Updates" button * Sends a request to start location updates * * @param v The view object associated with this method, in this case a Button. */ public void startUpdates(View v) { mUpdatesRequested = true; mFileName = "gps_" + System.currentTimeMillis(); if (servicesConnected()) { startPeriodicUpdates(); // mRecording.setVisibility(View.VISIBLE); startRecordingAnimation(); } } /** * Invoked by the "Stop Updates" button * Sends a request to remove location updates * request them. * * @param v The view object associated with this method, in this case a Button. */ public void stopUpdates(View v) { mUpdatesRequested = false; if (servicesConnected()) { stopPeriodicUpdates(); // mRecording.setVisibility(View.GONE); stopRecordingAnimation(); } } /* * Called by Location Services when the request to connect the * client finishes successfully. At this point, you can * request the current location or start periodic updates */ @Override public void onConnected(Bundle bundle) { // startUpdates(null); // if (mUpdatesRequested) { // startPeriodicUpdates(); // } } /* * Called by Location Services if the connection to the * location client drops because of an error. */ @Override public void onDisconnected() { } /* * Called by Location Services if the attempt to * Location Services fails. */ @Override public void onConnectionFailed(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( getActivity(), LocationUtils.CONNECTION_FAILURE_RESOLUTION_REQUEST); /* * Thrown if Google Play services canceled the original * PendingIntent */ } catch (IntentSender.SendIntentException e) { // Log the error e.printStackTrace(); } } else { // If no resolution is available, display a dialog to the user with the error. showErrorDialog(connectionResult.getErrorCode()); } } /** * Report location updates to the UI. * * @param location The updated location. */ @Override public void onLocationChanged(Location location) { String coords = LocationUtils.getLatLng(getActivity(), location); try { Activity activity = getActivity(); if(activity != null) { //TODO: do on another thread FileOutputStream out = FileUtils.getFileWriter(getActivity().getApplicationContext(), mFileName); out.write(coords.getBytes()); out.write("\n".getBytes()); out.close(); Log.d(TAG, coords); } } catch (IOException e) { Log.e("file writter", e.toString()); } } /** * In response to a request to start updates, send a request * to Location Services */ private void startPeriodicUpdates() { mLocationClient.requestLocationUpdates(mLocationRequest, this); } /** * In response to a request to stop updates, send a request to * Location Services */ private void stopPeriodicUpdates() { mLocationClient.removeLocationUpdates(this); } /** * An AsyncTask that calls getFromLocation() in the background. * The class uses the following generic types: * Location - A {@link android.location.Location} object containing the current location, * passed as the input parameter to doInBackground() * Void - indicates that progress units are not used by this subclass * String - An address passed to onPostExecute() */ protected class GetAddressTask extends AsyncTask<Location, Void, String> { // Store the context passed to the AsyncTask when the system instantiates it. Context localContext; // Constructor called by the system to instantiate the task public GetAddressTask(Context context) { // Required by the semantics of AsyncTask super(); // Set a Context for the background task localContext = context; } /** * Get a geocoding service instance, pass latitude and longitude to it, format the returned * address, and return the address to the UI thread. */ @Override protected String doInBackground(Location... params) { /* * Get a new geocoding service instance, set for localized addresses. This example uses * android.location.Geocoder, but other geocoders that conform to address standards * can also be used. */ Geocoder geocoder = new Geocoder(localContext, Locale.getDefault()); // Get the current location from the input parameter list Location location = params[0]; // Create a list to contain the result address List<Address> addresses = null; // Try to get an address for the current location. Catch IO or network problems. try { /* * Call the synchronous getFromLocation() method with the latitude and * longitude of the current location. Return at most 1 address. */ addresses = geocoder.getFromLocation(location.getLatitude(), location.getLongitude(), 1 ); // Catch network or other I/O problems. } catch (IOException exception1) { // Log an error and return an error message Log.e(LocationUtils.APPTAG, getString(R.string.IO_Exception_getFromLocation)); // print the stack trace exception1.printStackTrace(); // Return an error message return (getString(R.string.IO_Exception_getFromLocation)); // Catch incorrect latitude or longitude values } catch (IllegalArgumentException exception2) { // Construct a message containing the invalid arguments String errorString = getString( R.string.illegal_argument_exception, location.getLatitude(), location.getLongitude() ); // Log the error and print the stack trace Log.e(LocationUtils.APPTAG, errorString); exception2.printStackTrace(); // return errorString; } // If the reverse geocode returned an address if (addresses != null && addresses.size() > 0) { // Get the first address Address address = addresses.get(0); // Format the first line of address String addressText = getString(R.string.address_output_string, // If there's a street address, add it address.getMaxAddressLineIndex() > 0 ? address.getAddressLine(0) : "", // Locality is usually a city address.getLocality(), // The country of the address address.getCountryName() ); // Return the text return addressText; // If there aren't any addresses, post a message } else { return getString(R.string.no_address_found); } } /** * A method that's called once doInBackground() completes. Set the text of the * UI element that displays the address. This method runs on the UI thread. */ @Override protected void onPostExecute(String address) { } } /** * Show a dialog returned by Google Play services for the * connection error code * * @param errorCode An error code returned from onConnectionFailed */ private void showErrorDialog(int errorCode) { // Get the error dialog from Google Play services Dialog errorDialog = GooglePlayServicesUtil.getErrorDialog( errorCode, getActivity(), LocationUtils.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 ErrorDialogFragment errorFragment = new ErrorDialogFragment(); // Set the dialog in the DialogFragment errorFragment.setDialog(errorDialog); // Show the error dialog in the DialogFragment errorFragment.show(getFragmentManager(), LocationUtils.APPTAG); } } /** * Define a DialogFragment to display the error dialog generated in * showErrorDialog. */ public static class ErrorDialogFragment extends DialogFragment { // Global field to contain the error dialog private Dialog mDialog; /** * Default constructor. Sets the dialog field to null */ public ErrorDialogFragment() { super(); mDialog = null; } /** * Set the dialog to display * * @param dialog An error dialog */ public void setDialog(Dialog dialog) { mDialog = dialog; } /* * This method must return a Dialog to the DialogFragment. */ @Override public Dialog onCreateDialog(Bundle savedInstanceState) { return mDialog; } } }