got gpx export working - yay (#14)

app/build.gradle

@@ -22,9 +22,9 @@ android {
 
 dependencies {
     compile fileTree(include: ['*.jar'], dir: 'libs')
-    compile 'com.android.support:appcompat-v7:25.1.1'
+    compile 'com.android.support:appcompat-v7:25.2.0'
-    compile 'com.android.support:design:25.1.1'
+    compile 'com.android.support:design:25.2.0'
-    compile 'com.android.support:cardview-v7:25.1.1'
+    compile 'com.android.support:cardview-v7:25.2.0'
     compile 'org.osmdroid:osmdroid-android:5.6.4'
     compile 'com.google.code.gson:gson:2.8.0'
 }

app/src/main/AndroidManifest.xml

@@ -25,6 +25,7 @@
             android:name=".MainActivity"
             android:label="@string/app_name"
             android:theme="@style/TrackbookAppTheme.NoActionBar"
+            android:resizeableActivity="true"
             android:launchMode="singleTop">
             <intent-filter>
                 <action android:name="android.intent.action.MAIN" />
@@ -39,6 +40,7 @@
             android:name=".InfosheetActivity"
             android:label="@string/title_activity_infosheet"
             android:parentActivityName=".MainActivity"
+            android:resizeableActivity="true"
             android:configChanges="keyboardHidden|orientation|screenSize|screenLayout">
 
 

app/src/main/java/org/y20k/trackbook/MainActivity.java

@@ -18,9 +18,9 @@ package org.y20k.trackbook;
 
 import android.Manifest;
 import android.annotation.TargetApi;
+import android.app.Activity;
 import android.content.BroadcastReceiver;
 import android.content.Context;
-import android.content.DialogInterface;
 import android.content.Intent;
 import android.content.IntentFilter;
 import android.content.SharedPreferences;
@@ -34,12 +34,12 @@ import android.support.annotation.Nullable;
 import android.support.design.widget.FloatingActionButton;
 import android.support.design.widget.Snackbar;
 import android.support.design.widget.TabLayout;
+import android.support.v4.app.DialogFragment;
 import android.support.v4.app.Fragment;
 import android.support.v4.app.FragmentManager;
 import android.support.v4.app.FragmentPagerAdapter;
 import android.support.v4.content.ContextCompat;
 import android.support.v4.content.LocalBroadcastManager;
-import android.support.v7.app.AlertDialog;
 import android.support.v7.app.AppCompatActivity;
 import android.support.v7.widget.Toolbar;
 import android.util.SparseArray;
@@ -51,6 +51,7 @@ import android.widget.Button;
 import android.widget.LinearLayout;
 import android.widget.Toast;
 
+import org.y20k.trackbook.helpers.DialogHelper;
 import org.y20k.trackbook.helpers.LogHelper;
 import org.y20k.trackbook.helpers.NotificationHelper;
 import org.y20k.trackbook.helpers.TrackbookKeys;
@@ -256,6 +257,64 @@ public class MainActivity extends AppCompatActivity implements TrackbookKeys {
     }
 
 
+    /* Handles FloatingActionButton dialog results */
+    public void onFloatingActionButtonResult(int requestCode, int resultCode) {
+        switch(requestCode) {
+            case RESULT_SAVE_DIALOG:
+                if (resultCode == Activity.RESULT_OK) {
+                    // user chose SAVE
+                    handleStateAfterSave();
+                } else if (resultCode == Activity.RESULT_CANCELED){
+                    LogHelper.v(LOG_TAG, "Save dialog result: CANCEL");
+                }
+                break;
+            case RESULT_CLEAR_DIALOG:
+                if (resultCode == Activity.RESULT_OK) {
+                    // user chose CLEAR
+                    handleStateAfterClear();
+                } else if (resultCode == Activity.RESULT_CANCELED){
+                    LogHelper.v(LOG_TAG, "Clear map: User chose CANCEL.");
+                }
+                break;
+        }
+    }
+
+
+    /* Handles the visual state after a save action */
+    private void handleStateAfterSave() {
+        // display and update track tab
+        mSelectedTab = FRAGMENT_ID_TRACK;
+        mViewPager.setCurrentItem(mSelectedTab);
+
+        // dismiss notification
+        NotificationHelper.stop();
+
+        // hide Floating Action Button sub menu
+        showFloatingActionButtonMenu(false);
+
+        // update Floating Action Button icon
+        mFloatingActionButtonState = FAB_STATE_DEFAULT;
+        setFloatingActionButtonState();
+    }
+
+
+    /* Handles the visual state after a save action */
+    private void handleStateAfterClear() {
+        // notify user
+        Toast.makeText(this, getString(R.string.toast_message_track_clear), Toast.LENGTH_LONG).show();
+
+        // dismiss notification
+        NotificationHelper.stop();
+
+        // hide Floating Action Button sub menu
+        showFloatingActionButtonMenu(false);
+
+        // update Floating Action Button icon
+        mFloatingActionButtonState = FAB_STATE_DEFAULT;
+        setFloatingActionButtonState();
+    }
+
+
     /* Loads state of Floating Action Button from preferences */
     private void loadFloatingActionButtonState(Context context) {
         SharedPreferences settings = PreferenceManager.getDefaultSharedPreferences(context);
@@ -348,7 +407,9 @@ public class MainActivity extends AppCompatActivity implements TrackbookKeys {
                 mFloatingActionButtonSubMenu1.setOnClickListener(new View.OnClickListener() {
                     @Override
                     public void onClick(View view) {
-                        handleButtonSaveAndClearClick();
+                        MainActivityMapFragment mainActivityMapFragment = (MainActivityMapFragment) mSectionsPagerAdapter.getFragment(FRAGMENT_ID_MAP);
+                        mainActivityMapFragment.onActivityResult(RESULT_SAVE_DIALOG, Activity.RESULT_OK, getIntent());
+                        handleStateAfterSave();
                     }
                 });
             }
@@ -356,24 +417,16 @@ public class MainActivity extends AppCompatActivity implements TrackbookKeys {
                 mFloatingActionButtonSubMenu2.setOnClickListener(new View.OnClickListener() {
                     @Override
                     public void onClick(View view) {
-                        // ask user to confirm the clear action
+                        int dialogTitle = -1;
-                        AlertDialog.Builder builder = new AlertDialog.Builder(MainActivity.this);
+                        String dialogMessage = getString(R.string.dialog_clear_content);
-                        builder.setMessage(R.string.dialog_clear_content);
+                        int dialogPositiveButton = R.string.dialog_clear_action_clear;
-                        builder.setNegativeButton(R.string.dialog_default_action_cancel, new DialogInterface.OnClickListener() {
+                        int dialogNegativeButton = R.string.dialog_default_action_cancel;
-                            @Override
+
-                            public void onClick(DialogInterface dialogInterface, int i) {
+                        // show delete dialog - results are handles by onActivityResult
-                                // do nothing
+                        MainActivityMapFragment mainActivityMapFragment = (MainActivityMapFragment) mSectionsPagerAdapter.getFragment(FRAGMENT_ID_MAP);
-                            }
+                        DialogFragment dialogFragment = DialogHelper.newInstance(dialogTitle, dialogMessage, dialogPositiveButton, dialogNegativeButton);
-                        });
+                        dialogFragment.setTargetFragment(mainActivityMapFragment, RESULT_CLEAR_DIALOG);
-                        builder.setPositiveButton(R.string.dialog_clear_action_clear, new DialogInterface.OnClickListener() {
+                        dialogFragment.show(getSupportFragmentManager(), "ClearDialog");
-                            @Override
-                            public void onClick(DialogInterface dialogInterface, int i) {
-                                // clear current track
-                                handleButtonClearClick();
-                            }
-                        });
-                        AlertDialog dialog = builder.create();
-                        dialog.show();
                     }
                 });
             }
@@ -465,46 +518,46 @@ public class MainActivity extends AppCompatActivity implements TrackbookKeys {
     }
 
 
-    /* Handles tap on the save and clear button */
+//    /* Handles tap on the save and clear button */
-    private void handleButtonSaveAndClearClick() {
+//    private void handleButtonSaveAndClearClick() {
-        // clear map and save track
+//        // clear map and save track
-        MainActivityMapFragment mainActivityMapFragment = (MainActivityMapFragment) mSectionsPagerAdapter.getFragment(FRAGMENT_ID_MAP);
+//        MainActivityMapFragment mainActivityMapFragment = (MainActivityMapFragment) mSectionsPagerAdapter.getFragment(FRAGMENT_ID_MAP);
-        mainActivityMapFragment.clearMap(true);
+//        mainActivityMapFragment.clearMap(true);
-
+//
-        // display and update track tab
+//        // display and update track tab
-        mSelectedTab = FRAGMENT_ID_TRACK;
+//        mSelectedTab = FRAGMENT_ID_TRACK;
-        mViewPager.setCurrentItem(mSelectedTab);
+//        mViewPager.setCurrentItem(mSelectedTab);
-
+//
-        // dismiss notification
+//        // dismiss notification
-        NotificationHelper.stop();
+//        NotificationHelper.stop();
-
+//
-        // hide Floating Action Button sub menu
+//        // hide Floating Action Button sub menu
-        showFloatingActionButtonMenu(false);
+//        showFloatingActionButtonMenu(false);
-
+//
-        // update Floating Action Button icon
+//        // update Floating Action Button icon
-        mFloatingActionButtonState = FAB_STATE_DEFAULT;
+//        mFloatingActionButtonState = FAB_STATE_DEFAULT;
-        setFloatingActionButtonState();
+//        setFloatingActionButtonState();
-    }
+//    }
 
 
-    /* Handles tap on the clear button */
+//    /* Handles tap on the clear button */
-    private void handleButtonClearClick() {
+//    private void handleButtonClearClick() {
-        // clear map, do not save track
+//        // clear map, do not save track
-        MainActivityMapFragment mainActivityMapFragment = (MainActivityMapFragment) mSectionsPagerAdapter.getFragment(FRAGMENT_ID_MAP);
+//        MainActivityMapFragment mainActivityMapFragment = (MainActivityMapFragment) mSectionsPagerAdapter.getFragment(FRAGMENT_ID_MAP);
-        mainActivityMapFragment.clearMap(false);
+//        mainActivityMapFragment.clearMap(false);
-
+//
-        // dismiss notification
+//        // dismiss notification
-        NotificationHelper.stop();
+//        NotificationHelper.stop();
-
+//
-        // hide Floating Action Button sub menu
+//        // hide Floating Action Button sub menu
-        showFloatingActionButtonMenu(false);
+//        showFloatingActionButtonMenu(false);
-
+//
-        // update Floating Action Button icon
+//        // update Floating Action Button icon
-        mFloatingActionButtonState = FAB_STATE_DEFAULT;
+//        mFloatingActionButtonState = FAB_STATE_DEFAULT;
-        setFloatingActionButtonState();
+//        setFloatingActionButtonState();
-
+//
-        Toast.makeText(this, getString(R.string.toast_message_track_clear), Toast.LENGTH_LONG).show();
+//        Toast.makeText(this, getString(R.string.toast_message_track_clear), Toast.LENGTH_LONG).show();
-    }
+//    }
 
 
     /* Set state of FloatingActionButton */

app/src/main/java/org/y20k/trackbook/MainActivityMapFragment.java

@@ -348,6 +348,35 @@ public class MainActivityMapFragment extends Fragment implements TrackbookKeys {
     }
 
 
+    @Override
+    public void onActivityResult(int requestCode, int resultCode, Intent data) {
+        super.onActivityResult(requestCode, resultCode, data);
+        switch(requestCode) {
+            case RESULT_SAVE_DIALOG:
+                if (resultCode == Activity.RESULT_OK) {
+                    // user chose SAVE - clear map and save track
+                    clearMap(true);
+                    // FloatingActionButton state is already being handled in MainActivity
+                    // ((MainActivity)mActivity).onFloatingActionButtonResult(requestCode, resultCode);
+                    LogHelper.v(LOG_TAG, "Save dialog result: SAVE");
+                } else if (resultCode == Activity.RESULT_CANCELED){
+                    LogHelper.v(LOG_TAG, "Save dialog result: CANCEL");
+                }
+                break;
+            case RESULT_CLEAR_DIALOG:
+                if (resultCode == Activity.RESULT_OK) {
+                    // User chose CLEAR - clear map, do not save track
+                    clearMap(false);
+                    // handle FloatingActionButton state in MainActivity
+                    ((MainActivity)mActivity).onFloatingActionButtonResult(requestCode, resultCode);
+                } else if (resultCode == Activity.RESULT_CANCELED){
+                    LogHelper.v(LOG_TAG, "Clear dialog result: CANCEL");
+                }
+                break;
+        }
+    }
+
+
     @Override
     public void onSaveInstanceState(Bundle outState) {
         outState.putBoolean(INSTANCE_FIRST_START, mFirstStart);
@@ -389,7 +418,7 @@ public class MainActivityMapFragment extends Fragment implements TrackbookKeys {
 
 
     /* Removes track crumbs from map */
-    public void clearMap(boolean saveTrack) {
+    private void clearMap(boolean saveTrack) {
 
         // clear map
         if (mTrackOverlay != null) {

app/src/main/java/org/y20k/trackbook/MainActivityTrackFragment.java

@@ -19,7 +19,6 @@ package org.y20k.trackbook;
 import android.app.Activity;
 import android.content.BroadcastReceiver;
 import android.content.Context;
-import android.content.DialogInterface;
 import android.content.Intent;
 import android.content.IntentFilter;
 import android.location.Location;
@@ -28,9 +27,10 @@ import android.os.Bundle;
 import android.support.annotation.NonNull;
 import android.support.annotation.Nullable;
 import android.support.design.widget.BottomSheetBehavior;
+import android.support.v4.app.DialogFragment;
 import android.support.v4.app.Fragment;
+import android.support.v4.app.FragmentActivity;
 import android.support.v4.content.LocalBroadcastManager;
-import android.support.v7.app.AlertDialog;
 import android.view.LayoutInflater;
 import android.view.View;
 import android.view.ViewGroup;
@@ -48,7 +48,9 @@ import org.osmdroid.views.overlay.ItemizedIconOverlay;
 import org.osmdroid.views.overlay.compass.CompassOverlay;
 import org.osmdroid.views.overlay.compass.InternalCompassOrientationProvider;
 import org.y20k.trackbook.core.Track;
+import org.y20k.trackbook.helpers.DialogHelper;
 import org.y20k.trackbook.helpers.DropdownAdapter;
+import org.y20k.trackbook.helpers.ExportHelper;
 import org.y20k.trackbook.helpers.LogHelper;
 import org.y20k.trackbook.helpers.MapHelper;
 import org.y20k.trackbook.helpers.StorageHelper;
@@ -69,7 +71,7 @@ public class MainActivityTrackFragment extends Fragment implements AdapterView.O
 
 
     /* Main class variables */
-    private Activity mActivity;
+    private FragmentActivity mActivity;
     private View mRootView;
     private MapView mMapView;
     private LinearLayout mOnboardingView;
@@ -175,8 +177,10 @@ public class MainActivityTrackFragment extends Fragment implements AdapterView.O
         mTrackManagementLayout = (LinearLayout) mRootView.findViewById(R.id.track_management_layout);
         mDropdown = (Spinner) mRootView.findViewById(R.id.track_selector);
 
-        //
+        // attach listeners to export and delete buttons
+        ImageButton exportButton = (ImageButton) mRootView.findViewById(R.id.export_button);
         ImageButton deleteButton = (ImageButton) mRootView.findViewById(R.id.delete_button);
+        exportButton.setOnClickListener(getExportButtonListener());
         deleteButton.setOnClickListener(getDeleteButtonListener());
 
         // get views for statistics sheet
@@ -291,6 +295,34 @@ public class MainActivityTrackFragment extends Fragment implements AdapterView.O
     }
 
 
+
+    @Override
+    public void onActivityResult(int requestCode, int resultCode, Intent data) {
+        super.onActivityResult(requestCode, resultCode, data);
+        switch(requestCode) {
+            case RESULT_DELETE_DIALOG:
+                if (resultCode == Activity.RESULT_OK) {
+                    LogHelper.v(LOG_TAG, "Delete dialog result: DELETE");
+                } else if (resultCode == Activity.RESULT_CANCELED){
+                    LogHelper.v(LOG_TAG, "Delete dialog result: CANCEL");
+                }
+                break;
+            case RESULT_EXPORT_DIALOG:
+                if (resultCode == Activity.RESULT_OK) {
+                    // User chose EXPORT
+                    ExportHelper exportHelper = new ExportHelper(mActivity);
+                    exportHelper.exportToGpx(mTrack);
+                } else if (resultCode == Activity.RESULT_CANCELED){
+                    // User chose CANCEL
+                    LogHelper.v(LOG_TAG, "Export to GPX: User chose CANCEL.");
+                }
+                break;
+        }
+    }
+
+
+
+
     /* Displays map and statistics for track */
     private void displayTrack() {
         GeoPoint position;
@@ -360,9 +392,11 @@ public class MainActivityTrackFragment extends Fragment implements AdapterView.O
                 switch (newState) {
                     case BottomSheetBehavior.STATE_EXPANDED:
                         // statistics sheet expanded
+                        mTrackManagementLayout.setVisibility(View.INVISIBLE);
                         break;
                     case BottomSheetBehavior.STATE_COLLAPSED:
                         // statistics sheet collapsed
+                        mTrackManagementLayout.setVisibility(View.VISIBLE);
                         mStatisticsSheetBehavior.setState(BottomSheetBehavior.STATE_COLLAPSED);
                         break;
                     case BottomSheetBehavior.STATE_HIDDEN:
@@ -376,6 +410,12 @@ public class MainActivityTrackFragment extends Fragment implements AdapterView.O
             @Override
             public void onSlide(@NonNull View bottomSheet, float slideOffset) {
                 // react to dragging events
+                if (slideOffset < 0.5f) {
+                    mTrackManagementLayout.setVisibility(View.VISIBLE);
+                } else {
+                    mTrackManagementLayout.setVisibility(View.INVISIBLE);
+                }
+
             }
         };
     }
@@ -386,26 +426,54 @@ public class MainActivityTrackFragment extends Fragment implements AdapterView.O
         return new View.OnClickListener() {
             @Override
             public void onClick(View view) {
-                // ask user to confirm the delete action
+                // get text elements for delete dialog
+                int dialogTitle = R.string.dialog_delete_title;
                 String dialogMessage = getString(R.string.dialog_delete_content) + " " + mTrack.getTrackDuration() + " | " + mTrack.getTrackDistance();
-                AlertDialog.Builder builder = new AlertDialog.Builder(mActivity);
+                int dialogPositiveButton = R.string.dialog_delete_action_delete;
-                builder.setTitle(R.string.dialog_delete_title);
+                int dialogNegativeButton = R.string.dialog_default_action_cancel;
-                builder.setMessage(dialogMessage);
+
-                builder.setNegativeButton(R.string.dialog_default_action_cancel, new DialogInterface.OnClickListener() {
+                // show delete dialog - results are handles by onActivityResult
-                    @Override
+                DialogFragment dialogFragment = DialogHelper.newInstance(dialogTitle, dialogMessage, dialogPositiveButton, dialogNegativeButton);
-                    public void onClick(DialogInterface dialogInterface, int i) {
+                dialogFragment.setTargetFragment(MainActivityTrackFragment.this, RESULT_DELETE_DIALOG);
-                        // do nothing
+                dialogFragment.show(mActivity.getSupportFragmentManager(), "DeleteDialog");
             }
-                });
+        };
-                builder.setPositiveButton(R.string.dialog_delete_action_delete, new DialogInterface.OnClickListener() {
-                    @Override
-                    public void onClick(DialogInterface dialogInterface, int i) {
-                        // delete current track
-                        // TODO implement
     }
-                });
+
-                AlertDialog dialog = builder.create();
+
-                dialog.show();
+    /* Creates OnClickListener for the export button - needed in onCreateView */
+    private View.OnClickListener getExportButtonListener() {
+        return new View.OnClickListener() {
+            @Override
+            public void onClick(View view) {
+                // dialog text components
+                int dialogTitle;
+                String dialogMessage;
+                int dialogPositiveButton;
+                int dialogNegativeButton;
+
+                // create an ExportHelper
+                final ExportHelper exportHelper = new ExportHelper(mActivity);
+
+                // get text elements for delete dialog
+                if (exportHelper.gpxFileExists(mTrack)) {
+                    // CASE: OVERWRITE - GPX file exists
+                    dialogTitle = R.string.dialog_export_title_overwrite;
+                    dialogMessage = getString(R.string.dialog_export_content_overwrite) + " (" + mTrack.getTrackDuration() + " | " + mTrack.getTrackDistance() + ")";
+                    dialogPositiveButton = R.string.dialog_export_action_overwrite;
+                    dialogNegativeButton = R.string.dialog_default_action_cancel;
+                } else {
+                    // CASE: EXPORT - GPX file does NOT yet exits
+                    dialogTitle = R.string.dialog_export_title_export;
+                    dialogMessage = getString(R.string.dialog_export_content_export) + " (" + mTrack.getTrackDuration() + " | " + mTrack.getTrackDistance() + ")";
+                    dialogPositiveButton = R.string.dialog_export_action_export;
+                    dialogNegativeButton = R.string.dialog_default_action_cancel;
+                }
+
+                // show delete dialog - results are handles by onActivityResult
+                DialogFragment dialogFragment = DialogHelper.newInstance(dialogTitle, dialogMessage, dialogPositiveButton, dialogNegativeButton);
+                dialogFragment.setTargetFragment(MainActivityTrackFragment.this, RESULT_EXPORT_DIALOG);
+                dialogFragment.show(mActivity.getSupportFragmentManager(), "ExportDialog");
             }
         };
     }

app/src/main/java/org/y20k/trackbook/helpers/DialogHelper.java

@@ -0,0 +1,80 @@
+/**
+ * DialogHelper.java
+ * Implements the DialogHelper class
+ * A DialogHelper creates a customizable alert dialog
+ *
+ * This file is part of
+ * TRACKBOOK - Movement Recorder for Android
+ *
+ * Copyright (c) 2016-17 - Y20K.org
+ * Licensed under the MIT-License
+ * http://opensource.org/licenses/MIT
+ *
+ * Trackbook uses osmdroid - OpenStreetMap-Tools for Android
+ * https://github.com/osmdroid/osmdroid
+ */
+
+package org.y20k.trackbook.helpers;
+
+import android.app.Activity;
+import android.app.AlertDialog;
+import android.app.Dialog;
+import android.content.DialogInterface;
+import android.os.Bundle;
+import android.support.annotation.NonNull;
+import android.support.v4.app.DialogFragment;
+
+
+/**
+ * DialogHelper class
+ */
+public class DialogHelper extends DialogFragment implements TrackbookKeys {
+
+    /* Constructs a new instance */
+    public static DialogHelper newInstance(int title, String message, int positiveButton, int negativeButton) {
+        DialogHelper fragment = new DialogHelper();
+        Bundle args = new Bundle();
+        args.putInt(ARG_DIALOG_TITLE, title);
+        args.putString(ARG_DIALOG_MESSAGE, message);
+        args.putInt(ARG_DIALOG_BUTTON_POSITIVE, positiveButton);
+        args.putInt(ARG_DIALOG_BUTTON_NEGATIVE, negativeButton);
+        fragment.setArguments(args);
+        return fragment;
+    }
+
+
+    @NonNull
+    @Override
+    public Dialog onCreateDialog(Bundle savedInstanceState) {
+        Bundle args = getArguments();
+
+        // get text elements
+        int title = args.getInt(ARG_DIALOG_TITLE);
+        String message = args.getString(ARG_DIALOG_MESSAGE);
+        int positiveButton = args.getInt(ARG_DIALOG_BUTTON_POSITIVE);
+        int negativeButton = args.getInt(ARG_DIALOG_BUTTON_NEGATIVE);
+
+        // build dialog
+        AlertDialog.Builder dialogBuilder = new AlertDialog.Builder(getActivity());
+        if (title != -1) {
+            dialogBuilder.setTitle(title);
+        }
+        dialogBuilder.setTitle(message);
+        dialogBuilder.setPositiveButton(positiveButton,
+                new DialogInterface.OnClickListener() {
+                    public void onClick(DialogInterface dialog, int whichButton) {
+                        getTargetFragment().onActivityResult(getTargetRequestCode(), Activity.RESULT_OK, getActivity().getIntent());
+                    }
+                }
+        );
+        dialogBuilder.setNegativeButton(negativeButton,
+                new DialogInterface.OnClickListener() {
+                    public void onClick(DialogInterface dialog, int whichButton) {
+                        getTargetFragment().onActivityResult(getTargetRequestCode(), Activity.RESULT_CANCELED, getActivity().getIntent());
+                    }
+                }
+        );
+
+        return dialogBuilder.create();
+    }
+}

app/src/main/java/org/y20k/trackbook/helpers/ExportHelper.java

@@ -0,0 +1,186 @@
+/**
+ * ExportHelper.java
+ * Implements the ExportHelper class
+ * A ExportHelper can convert Track object into a GPX string
+ *
+ * This file is part of
+ * TRACKBOOK - Movement Recorder for Android
+ *
+ * Copyright (c) 2016-17 - Y20K.org
+ * Licensed under the MIT-License
+ * http://opensource.org/licenses/MIT
+ *
+ * Trackbook uses osmdroid - OpenStreetMap-Tools for Android
+ * https://github.com/osmdroid/osmdroid
+ */
+
+package org.y20k.trackbook.helpers;
+
+import android.content.Context;
+import android.location.Location;
+import android.os.Environment;
+import android.widget.Toast;
+
+import org.y20k.trackbook.R;
+import org.y20k.trackbook.core.Track;
+import org.y20k.trackbook.core.WayPoint;
+
+import java.io.BufferedWriter;
+import java.io.File;
+import java.io.FileWriter;
+import java.io.IOException;
+import java.text.DateFormat;
+import java.text.SimpleDateFormat;
+import java.util.Date;
+import java.util.Locale;
+
+/**
+ * ExportHelper class
+ */
+public class ExportHelper implements TrackbookKeys {
+
+    /* Define log tag */
+    private static final String LOG_TAG = ExportHelper.class.getSimpleName();
+
+
+    /* Main class variables */
+//    private final Track mTrack;
+    private final Context mContext;
+    private File mFolder;
+
+
+    /* Constructor */
+    public ExportHelper(Context context) {
+        mContext = context;
+        mFolder = Environment.getExternalStoragePublicDirectory(Environment.DIRECTORY_DOWNLOADS);
+    }
+
+
+    /* Checks if a GPX file for given track is already present */
+    public boolean gpxFileExists(Track track) {
+        return createFile(track).exists();
+    }
+
+
+    /* Exports given track to GPX */
+    public boolean exportToGpx(Track track) {
+
+        // create "Download" folder if necessary
+        if (mFolder != null && !mFolder.exists()) {
+            LogHelper.v(LOG_TAG, "Creating new folder: " + mFolder.toString());
+            mFolder.mkdirs();
+        }
+
+        // get file for given track
+        File gpxFile = createFile(track);
+
+        // get GPX string representation for given track
+        String gpxString = createGpxString(track);
+
+        // write GPX file
+        if (writeGpxToFile(gpxString, gpxFile)) {
+            String toastMessage = mContext.getResources().getString(R.string.toast_message_export_success) + " " + gpxFile.toString();
+            Toast.makeText(mContext, toastMessage, Toast.LENGTH_LONG).show();
+            return true;
+        } else {
+            String toastMessage = mContext.getResources().getString(R.string.toast_message_export_fail) + " " + gpxFile.toString();
+            Toast.makeText(mContext, toastMessage, Toast.LENGTH_LONG).show();
+            return false;
+        }
+    }
+
+
+    /* Return a GPX filepath for a given track */
+    private File createFile(Track track) {
+        Date recordingStart = track.getRecordingStart();
+        DateFormat dateFormat = new SimpleDateFormat("yyyy-MM-dd-HH-mm-ss", Locale.US);
+        return new File(mFolder, dateFormat.format(recordingStart) + FILE_TYPE_GPX_EXTENSION);
+    }
+
+
+    /* Writes given GPX string to Download folder */
+    private boolean writeGpxToFile (String gpxString, File gpxFile) {
+        // write track
+        try (BufferedWriter bw = new BufferedWriter(new FileWriter(gpxFile))) {
+            LogHelper.v(LOG_TAG, "Saving track to external storage: " + gpxFile.toString());
+            bw.write(gpxString);
+            return true;
+        } catch (IOException e) {
+            LogHelper.e(LOG_TAG, "Unable to saving track to external storage (IOException): " + gpxFile.toString());
+            return false;
+        }
+    }
+
+
+    /* Creates GPX formatted string */
+    private String createGpxString(Track track) {
+        String gpxString;
+
+        // add header
+        gpxString = "<?xml version=\"1.0\" encoding=\"UTF-8\" standalone=\"no\" ?>\n" +
+                    "<gpx version=\"1.1\" creator=\"Transistor App (Android)\"\n" +
+                    "     xmlns:xsi=\"http://www.w3.org/2001/XMLSchema-instance\"\n" +
+                    "     xsi:schemaLocation=\"http://www.topografix.com/GPX/1/1 http://www.topografix.com/GPX/1/1/gpx.xsd\">\n";
+
+        // add track
+        gpxString = gpxString + addTrack(track);
+
+        // add closing tag
+        gpxString = gpxString + "</gpx>\n";
+
+        return gpxString;
+    }
+
+
+    /* Creates Track */
+    private String addTrack(Track track) {
+        StringBuilder gpxTrack = new StringBuilder("");
+        DateFormat dateFormat = new SimpleDateFormat("yyyy-MM-dd'T'HH:mm:ssZ");
+
+        // add opening track tag
+        gpxTrack.append("\t<trk>\n");
+
+        // add name to track
+        gpxTrack.append("\t\t<name>");
+        gpxTrack.append("test");
+        gpxTrack.append("</name>\n");
+
+        // add opening track segment tag
+        gpxTrack.append("\t\t<trkseg>\n");
+
+        // add route point
+        for (WayPoint wayPoint:track.getWayPoints()) {
+            // get location from waypoint
+            Location location = wayPoint.getLocation();
+
+            // add longitude and latitude
+            gpxTrack.append("\t\t\t<trkpt lat=\"");
+            gpxTrack.append(location.getLatitude());
+            gpxTrack.append("\" lon=\"");
+            gpxTrack.append(location.getLongitude());
+            gpxTrack.append("\">\n");
+
+            // add time
+            gpxTrack.append("\t\t\t\t<time>");
+            gpxTrack.append(dateFormat.format(new Date(location.getTime())));
+            gpxTrack.append("</time>\n");
+
+            // add altitude
+            gpxTrack.append("\t\t\t\t<ele>");
+            gpxTrack.append(location.getAltitude());
+            gpxTrack.append("</ele>\n");
+
+            // add closing tag
+            gpxTrack.append("\t\t\t</trkpt>\n");
+        }
+
+        // add closing track segment tag
+        gpxTrack.append("\t\t<trkseg>\n");
+
+        // add closing track tag
+        gpxTrack.append("\t</trk>\n");
+
+        return gpxTrack.toString();
+    }
+
+}

app/src/main/java/org/y20k/trackbook/helpers/GpxHelper.java

@@ -1,110 +0,0 @@
-/**
- * GpxHelper.java
- * Implements the GpxHelper class
- * A GpxHelper can convert Track object into a GPX string
- *
- * This file is part of
- * TRACKBOOK - Movement Recorder for Android
- *
- * Copyright (c) 2016-17 - Y20K.org
- * Licensed under the MIT-License
- * http://opensource.org/licenses/MIT
- *
- * Trackbook uses osmdroid - OpenStreetMap-Tools for Android
- * https://github.com/osmdroid/osmdroid
- */
-
-package org.y20k.trackbook.helpers;
-
-import android.location.Location;
-
-import org.y20k.trackbook.core.Track;
-import org.y20k.trackbook.core.WayPoint;
-
-import java.text.DateFormat;
-import java.text.SimpleDateFormat;
-import java.util.Date;
-
-/**
- * GpxHelper class
- */
-public class GpxHelper {
-
-    /* Define log tag */
-    private static final String LOG_TAG = GpxHelper.class.getSimpleName();
-
-
-    /* Main class variables */
-    private final Track mTrack;
-
-
-    /* Constructor */
-    public GpxHelper(Track track) {
-        mTrack = track;
-    }
-
-
-    /* Creates GPX formatted string */
-    public String createGpxString() {
-        String gpxString;
-
-        // add header
-        gpxString = "<?xml version=\"1.0\" encoding=\"UTF-8\" standalone=\"no\" ?>\n" +
-                    "<gpx version=\"1.1\" creator=\"Transistor App (Android)\"\n" +
-                    "     xmlns:xsi=\"http://www.w3.org/2001/XMLSchema-instance\"\n" +
-                    "     xsi:schemaLocation=\"http://www.topografix.com/GPX/1/1 http://www.topografix.com/GPX/1/1/gpx.xsd\">\n";
-
-        // add track
-        gpxString = gpxString + addTrack();
-
-        // add closing tag
-        gpxString = gpxString + "</gpx>\n";
-
-        // todo remove
-        LogHelper.v(LOG_TAG, "GPX output:\n" + gpxString);
-
-        return gpxString;
-    }
-
-
-    /* Creates Track */
-    private String addTrack() {
-        StringBuilder gpxTrack = new StringBuilder("");
-        DateFormat dateFormat = new SimpleDateFormat("yyyy-MM-dd'T'HH:mm:ssZ");
-
-        // add opening route tag
-        gpxTrack.append("\t<rte>\n");
-
-        // add route point
-        for (WayPoint wayPoint:mTrack.getWayPoints()) {
-            // get location from waypoint
-            Location location = wayPoint.getLocation();
-
-            // add longitude and latitude
-            gpxTrack.append("\t\t<rtept lat=\"");
-            gpxTrack.append(location.getLatitude());
-            gpxTrack.append("\" lon=\"");
-            gpxTrack.append(location.getLongitude());
-            gpxTrack.append("\">\n");
-
-            // add time
-            gpxTrack.append("\t\t\t<time>");
-            gpxTrack.append(dateFormat.format(new Date(location.getTime())));
-            gpxTrack.append("</time>\n");
-
-            // add altitude
-            gpxTrack.append("\t\t\t<ele>");
-            gpxTrack.append(location.getAltitude());
-            gpxTrack.append("</ele>\n");
-
-            // add closing tag
-            gpxTrack.append("\t\t</rtept>\n");
-        }
-
-        // add closing route tag
-        gpxTrack.append("\t</rte>\n");
-
-        return gpxTrack.toString();
-    }
-
-}

app/src/main/java/org/y20k/trackbook/helpers/LogHelper.java

@@ -26,7 +26,7 @@ import android.util.Log;
  */
 public final class LogHelper {
 
-    private final static boolean mTesting = false;
+    private final static boolean mTesting = true;
 
     public static void d(final String tag, String message) {
         // include logging only in debug versions

app/src/main/java/org/y20k/trackbook/helpers/StorageHelper.java

@@ -36,11 +36,9 @@ import java.io.FileWriter;
 import java.io.IOException;
 import java.text.DateFormat;
 import java.text.SimpleDateFormat;
-import java.util.ArrayList;
 import java.util.Arrays;
 import java.util.Comparator;
 import java.util.Date;
-import java.util.List;
 import java.util.Locale;
 
 
@@ -64,17 +62,17 @@ public class StorageHelper implements TrackbookKeys {
         mActivity = activity;
 
         // get "tracks" folder
-        mFolder  = mActivity.getExternalFilesDir(DIRECTORY_NAME);
+        mFolder  = mActivity.getExternalFilesDir(TRACKS_DIRECTORY_NAME);
         // mFolder = getTracksDirectory();
 
-        // create folder if necessary
+        // create "tracks" folder if necessary
         if (mFolder != null && !mFolder.exists()) {
             LogHelper.v(LOG_TAG, "Creating new folder: " + mFolder.toString());
-            mFolder.mkdir();
+            mFolder.mkdirs();
         }
 
         // create temp file object
-        mTempFile = new File(mFolder.toString() + "/" + FILE_NAME_TEMP + FILE_TYPE_EXTENSION);
+        mTempFile = new File(mFolder.toString() + "/" + FILE_NAME_TEMP + FILE_TYPE_TRACKBOOK_EXTENSION);
 
         // delete old track - exclude temp file
         deleteOldTracks(false);
@@ -96,9 +94,6 @@ public class StorageHelper implements TrackbookKeys {
     /* Saves track object to file */
     public boolean saveTrack(@Nullable Track track, int fileType) {
 
-        // get "tracks" folder
-        mFolder = mActivity.getExternalFilesDir(DIRECTORY_NAME);
-
         Date recordingStart = null;
         if (track != null) {
             recordingStart = track.getRecordingStart();
@@ -109,11 +104,11 @@ public class StorageHelper implements TrackbookKeys {
             String fileName;
             if (fileType == FILE_TEMP_TRACK) {
                 // case: temp file
-                fileName = FILE_NAME_TEMP + FILE_TYPE_EXTENSION;
+                fileName = FILE_NAME_TEMP + FILE_TYPE_TRACKBOOK_EXTENSION;
             } else {
                 // case: regular file
                 DateFormat dateFormat = new SimpleDateFormat("yyyy-MM-dd-HH-mm-ss", Locale.US);
-                fileName = dateFormat.format(recordingStart) + FILE_TYPE_EXTENSION;
+                fileName = dateFormat.format(recordingStart) + FILE_TYPE_TRACKBOOK_EXTENSION;
             }
             File file = new File(mFolder.toString() + "/" +  fileName);
 
@@ -196,21 +191,21 @@ public class StorageHelper implements TrackbookKeys {
     }
 
 
-    /* Gets a list of tracks based on their file names */
+//    /* Gets a list of tracks based on their file names */
-    public List<String> getListOfTracks() {
+//    public List<String> getListOfTracks() {
-        List<String> listOfTracks = new ArrayList<String>();
+//        List<String> listOfTracks = new ArrayList<String>();
-
+//
-        // get files and sort them
+//        // get files and sort them
-        File[] files = mFolder.listFiles();
+//        File[] files = mFolder.listFiles();
-        files = sortFiles(files);
+//        files = sortFiles(files);
-
+//
-        for (File file : files) {
+//        for (File file : files) {
-            listOfTracks.add(file.getName());
+//            listOfTracks.add(file.getName());
-        }
+//        }
-
+//
-        // TODO HANDLE CASE: EMPTY FILE LIST
+//        // TODO HANDLE CASE: EMPTY FILE LIST
-        return listOfTracks;
+//        return listOfTracks;
-    }
+//    }
 
 
     // loads file and parses it into a track
@@ -252,14 +247,11 @@ public class StorageHelper implements TrackbookKeys {
     /* Gets most current track from directory */
     private File getMostCurrentTrack() {
 
-        // get "tracks" folder
-        mFolder  = mActivity.getExternalFilesDir(DIRECTORY_NAME);
-
         if (mFolder != null && mFolder.isDirectory()) {
             // get files and sort them
             File[] files = mFolder.listFiles();
             files = sortFiles(files);
-            if (files.length > 0 && files[0].getName().endsWith(FILE_TYPE_EXTENSION) && !files[0].equals(mTempFile)){
+            if (files.length > 0 && files[0].getName().endsWith(FILE_TYPE_TRACKBOOK_EXTENSION) && !files[0].equals(mTempFile)){
                 // return latest track
                 return files[0];
             }
@@ -282,9 +274,6 @@ public class StorageHelper implements TrackbookKeys {
     /* Gets the last track from directory */
     private void deleteOldTracks(boolean includeTempFile) {
 
-        // get "tracks" folder
-        mFolder  = mActivity.getExternalFilesDir(DIRECTORY_NAME);
-
         if (mFolder != null && mFolder.isDirectory()) {
             LogHelper.v(LOG_TAG, "Deleting older recordings.");
 
@@ -298,7 +287,7 @@ public class StorageHelper implements TrackbookKeys {
             // keep the latest ten (mMaxTrackFiles) track files
             int index = MAXIMUM_TRACK_FILES;
             // iterate through array
-            while (index < numberOfFiles && files[index].getName().endsWith(FILE_TYPE_EXTENSION) && !files[index].equals(mTempFile)) {
+            while (index < numberOfFiles && files[index].getName().endsWith(FILE_TYPE_TRACKBOOK_EXTENSION) && !files[index].equals(mTempFile)) {
                 files[index].delete();
                 index++;
             }
@@ -321,8 +310,8 @@ public class StorageHelper implements TrackbookKeys {
             public int compare(File file1, File file2) {
 
                 // discard temp file and files not ending with ".trackbook"
-                boolean file1IsTrack = file1.getName().endsWith(FILE_TYPE_EXTENSION) && !file1.equals(mTempFile);
+                boolean file1IsTrack = file1.getName().endsWith(FILE_TYPE_TRACKBOOK_EXTENSION) && !file1.equals(mTempFile);
-                boolean file2IsTrack = file2.getName().endsWith(FILE_TYPE_EXTENSION) && !file2.equals(mTempFile);
+                boolean file2IsTrack = file2.getName().endsWith(FILE_TYPE_TRACKBOOK_EXTENSION) && !file2.equals(mTempFile);
 
                 // note: "greater" means higher index in array
                 if (!file1IsTrack && file2IsTrack) {
@@ -353,7 +342,7 @@ public class StorageHelper implements TrackbookKeys {
 
     /* Return a write-able sub-directory from external storage  */
     private File getTracksDirectory() {
-        File[] storage = mActivity.getExternalFilesDirs(DIRECTORY_NAME);
+        File[] storage = mActivity.getExternalFilesDirs(TRACKS_DIRECTORY_NAME);
         for (File file : storage) {
             if (file != null) {
                 String state = EnvironmentCompat.getStorageState(file);

app/src/main/java/org/y20k/trackbook/helpers/TrackbookKeys.java

@@ -1,7 +1,7 @@
 /**
  * TrackbookKeys.java
  * Implements the keys used throughout the app
- * This class hosts all keys used to control Trackbook's state
+ * This interface hosts all keys used to control Trackbook's state
  *
  * This file is part of
  * TRACKBOOK - Movement Recorder for Android
@@ -41,6 +41,11 @@ public interface TrackbookKeys {
     String EXTRA_SAVE_FINISHED = "SAVE_FINISHED";
 
     /* ARGS */
+    String ARG_DIALOG_TITLE = "ArgDialogTitle";
+    String ARG_DIALOG_MESSAGE = "ArgDialogMessage";
+    String ARG_DIALOG_BUTTON_POSITIVE = "ArgDialogButtonPositive";
+    String ARG_DIALOG_BUTTON_NEGATIVE = "ArgDialogButtonNegative";
+
 //    String ARG_PERMISSIONS_GRANTED = "ArgPermissionsGranted";
 //    String ARG_TRACKING_STATE = "ArgTrackingState";
 //    String ARG_TRACK = "ArgTrack";
@@ -94,8 +99,17 @@ public interface TrackbookKeys {
     int FILE_MOST_CURRENT_TRACK = 1;
     int NEW_DROPDOWN_ITEM = -1;
 
-    String DIRECTORY_NAME = "tracks";
+    int RESULT_SAVE_DIALOG = 1;
-    String FILE_TYPE_EXTENSION = ".trackbook";
+    int RESULT_CLEAR_DIALOG = 2;
+    int RESULT_DELETE_DIALOG = 3;
+    int RESULT_EXPORT_DIALOG = 4;
+
+    int STORAGE_TRACKS = 1;
+    int STORAGE_DOWNLOADS = 2;
+
+    String TRACKS_DIRECTORY_NAME = "tracks";
+    String FILE_TYPE_GPX_EXTENSION = ".gpx";
+    String FILE_TYPE_TRACKBOOK_EXTENSION = ".trackbook";
     String FILE_NAME_TEMP = "temp";
 
 

app/src/main/res/drawable/ic_export_white_24dp.xml

@@ -0,0 +1,9 @@
+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+        android:width="24dp"
+        android:height="24dp"
+        android:viewportWidth="24.0"
+        android:viewportHeight="24.0">
+    <path
+        android:pathData="M9,3L5,6.99h3L8,14h2L10,6.99h3L9,3zM16,17.01L16,10h-2v7.01h-3L15,21l4,-3.99h-3z"
+        android:fillColor="@color/trackbook_white" />
+</vector>

app/src/main/res/layout/fragment_main_track.xml

@@ -38,12 +38,24 @@
                 android:gravity="start|center"
                 android:theme="@style/TrackbookAppTheme.PopupOverlay"
                 android:contentDescription="@string/descr_track_selector" />
+            <ImageButton
+                android:visibility="visible"
+                android:id="@+id/export_button"
+                android:layout_width="wrap_content"
+                android:layout_height="wrap_content"
+                android:layout_gravity="end|center"
+                android:layout_marginStart="@dimen/activity_horizontal_margin"
+                android:layout_marginEnd="@dimen/activity_horizontal_margin"
+                android:background="@drawable/ic_export_white_24dp"
+                android:contentDescription="@string/descr_export_button" />
             <ImageButton
                 android:visibility="gone"
                 android:id="@+id/delete_button"
                 android:layout_width="wrap_content"
                 android:layout_height="wrap_content"
                 android:layout_gravity="end|center"
+                android:layout_marginStart="@dimen/activity_horizontal_margin"
+                android:layout_marginEnd="@dimen/activity_horizontal_margin"
                 android:background="@drawable/ic_delete_forever_white_24dp"
                 android:contentDescription="@string/descr_delete_button" />
         </LinearLayout>

app/src/main/res/values-de/strings.xml

@@ -40,6 +40,12 @@
     <string name="dialog_delete_title">Aufzeichnung löschen?</string>
     <string name="dialog_delete_content">Diese Aufzeichnung löschen:</string>
     <string name="dialog_delete_action_delete">Löschen</string>
+    <string name="dialog_export_title_export">Export Recording as GPX?</string>
+    <string name="dialog_export_content_export">Export this recording as GPX track.</string>
+    <string name="dialog_export_action_export">Export</string>
+    <string name="dialog_export_title_overwrite">Export and Overwrite?</string>
+    <string name="dialog_export_content_overwrite">File already exists. Export and overwrite this recording as GPX track.</string>
+    <string name="dialog_export_action_overwrite">Export and Overwrite</string>
 
     <!-- toast messages -->
     <string name="toast_message_permissions_granted">Berechtigungen erteilt.</string>
@@ -52,6 +58,8 @@
     <string name="toast_message_save_track">Aufzeichnung wird gespeichert.</string>
     <string name="toast_message_last_location_age_one_hour">über eine Stunde</string>
     <string name="toast_message_track_clear">Aufzeichnung zurückgesetzt.</string>
+    <string name="toast_message_export_success">GPX export successful:</string>
+    <string name="toast_message_export_fail">GPX export failed:</string>
 
     <!-- map markers -->
     <string name="marker_description_source">Quelle</string>
@@ -81,8 +89,8 @@
     <string name="layout_onboarding_button_okay">Alles klar!</string>
 
     <!-- track tab onboarding -->
-    <string name="track_tab_onboarding_h1_part_1">Your recorded tracks</string>
+    <string name="track_tab_onboarding_h1_part_1">Bewegungsaufzeichnungen</string>
-    <string name="track_tab_onboarding_h1_part_2">… will show up here.</string>
+    <string name="track_tab_onboarding_h1_part_2">… werden hier erscheinen.</string>
 
     <!-- infosheet about -->
     <string name="infosheet_about_h1_about">Über Trackbook</string>
@@ -126,6 +134,7 @@
     <string name="descr_statistics_sheet_p_recording_start_value">Wert: Start der Aufzeichnung</string>
     <string name="descr_statistics_sheet_p_recording_end_value">Wert: Ende der Aufzeichnung</string>
     <string name="descr_track_selector">Auswahl-Menü für weitere Aufzeichnungen</string>
+    <string name="descr_export_button">Button Track Exportierem</string>
     <string name="descr_delete_button">Button Track Löschen</string>
 
 </resources>

app/src/main/res/values-ja/strings.xml

@@ -32,6 +32,12 @@
     <string name="dialog_delete_title">記録を削除しますか?</string>
     <string name="dialog_delete_content">次の記録を削除:</string>
     <string name="dialog_delete_action_delete">Delete</string>
+    <string name="dialog_export_title_export">Export Recording as GPX?</string>
+    <string name="dialog_export_content_export">Export this recording as GPX track.</string>
+    <string name="dialog_export_action_export">Export</string>
+    <string name="dialog_export_title_overwrite">Export and Overwrite?</string>
+    <string name="dialog_export_content_overwrite">File already exists. Export and overwrite this recording as GPX track.</string>
+    <string name="dialog_export_action_overwrite">Export and Overwrite</string>
 
     <string name="toast_message_permissions_granted">アクセス許可を付与しました。</string>
     <string name="toast_message_unable_to_start_app">Trackbook を起動できません。</string>
@@ -43,6 +49,8 @@
     <string name="toast_message_save_track">現在のトレースを保存しています。</string>
     <string name="toast_message_last_location_age_one_hour">1 時間以上</string>
     <string name="toast_message_track_clear">現在のトレース データを削除しました。</string>
+    <string name="toast_message_export_success">GPX export successful:</string>
+    <string name="toast_message_export_fail">GPX export failed:</string>
 
     <string name="marker_description_source">ソース</string>
     <string name="marker_description_time">時間</string>
@@ -111,6 +119,7 @@
     <string name="descr_statistics_sheet_p_recording_start_value">値: 記録の開始</string>
     <string name="descr_statistics_sheet_p_recording_end_value">値: 記録の終了</string>
     <string name="descr_track_selector">ドロップダウン メニューでさらにトレース</string>
+    <string name="descr_export_button">Track export button</string>
     <string name="descr_delete_button">トレース削除ボタン</string>
 
 </resources>

app/src/main/res/values-nl/strings.xml

@@ -30,6 +30,12 @@
     <string name="dialog_delete_title">Delete Recording?</string>
     <string name="dialog_delete_content">Delete the following recording:</string>
     <string name="dialog_delete_action_delete">Delete</string>
+    <string name="dialog_export_title_export">Export Recording as GPX?</string>
+    <string name="dialog_export_content_export">Export this recording as GPX track.</string>
+    <string name="dialog_export_action_export">Export</string>
+    <string name="dialog_export_title_overwrite">Export and Overwrite?</string>
+    <string name="dialog_export_content_overwrite">File already exists. Export and overwrite this recording as GPX track.</string>
+    <string name="dialog_export_action_overwrite">Export and Overwrite</string>
 
     <string name="toast_message_permissions_granted">Rechten verleend.</string>
     <string name="toast_message_unable_to_start_app">Trackbook kan niet worden gestart.</string>
@@ -41,6 +47,8 @@
     <string name="toast_message_save_track">Bezig met opslaan van huidige baan.</string>
     <string name="toast_message_last_location_age_one_hour">langer dan één uur</string>
     <string name="toast_message_track_clear">Huidige baangegevens verwijderd.</string>
+    <string name="toast_message_export_success">GPX export successful:</string>
+    <string name="toast_message_export_fail">GPX export failed:</string>
 
     <string name="marker_description_source">Bron</string>
     <string name="marker_description_time">Tijd</string>
@@ -109,6 +117,7 @@
     <string name="descr_statistics_sheet_p_recording_start_value">Waarde: beginnen met bijhouden</string>
     <string name="descr_statistics_sheet_p_recording_end_value">Waarde: stoppen met bijhouden</string>
     <string name="descr_track_selector">Uitrolmenu voor verdere banen</string>
+    <string name="descr_export_button">Track export button</string>
     <string name="descr_delete_button">Baan - verwijderknop</string>
 
 </resources>

app/src/main/res/values/strings.xml

@@ -38,8 +38,14 @@
     <string name="dialog_clear_content">Clear Recording?</string>
     <string name="dialog_clear_action_clear">Clear</string>
     <string name="dialog_delete_title">Delete Recording?</string>
-    <string name="dialog_delete_content">Delete the following recording:</string>
+    <string name="dialog_delete_content">Delete this recording:</string>
     <string name="dialog_delete_action_delete">Delete</string>
+    <string name="dialog_export_title_export">Export Recording as GPX?</string>
+    <string name="dialog_export_content_export">Export this recording as GPX track.</string>
+    <string name="dialog_export_action_export">Export</string>
+    <string name="dialog_export_title_overwrite">Export and Overwrite?</string>
+    <string name="dialog_export_content_overwrite">File already exists. Export and overwrite this recording as GPX track.</string>
+    <string name="dialog_export_action_overwrite">Export and Overwrite</string>
 
     <!-- toast messages -->
     <string name="toast_message_permissions_granted">Permissions granted.</string>
@@ -52,6 +58,8 @@
     <string name="toast_message_save_track">Saving current track.</string>
     <string name="toast_message_last_location_age_one_hour">over one hour</string>
     <string name="toast_message_track_clear">Current track data removed.</string>
+    <string name="toast_message_export_success">GPX export successful:</string>
+    <string name="toast_message_export_fail">GPX export failed:</string>
 
     <!-- map markers -->
     <string name="marker_description_source">Source</string>
@@ -126,6 +134,7 @@
     <string name="descr_statistics_sheet_p_recording_start_value">Value: start of recording</string>
     <string name="descr_statistics_sheet_p_recording_end_value">Value: end of recording</string>
     <string name="descr_track_selector">Dropdown menu for further tracks</string>
+    <string name="descr_export_button">Track export button</string>
     <string name="descr_delete_button">Track delete button</string>
 
 </resources>

build.gradle

@@ -5,7 +5,7 @@ buildscript {
         jcenter()
     }
     dependencies {
-        classpath 'com.android.tools.build:gradle:2.2.3'
+        classpath 'com.android.tools.build:gradle:2.3.2'
 
         // NOTE: Do not place your application dependencies here; they belong
         // in the individual module build.gradle files

gradle/wrapper/gradle-wrapper.properties

@@ -1,6 +1,6 @@
-#Mon Aug 22 10:55:02 CEST 2016
+#Fri Mar 03 15:35:49 CET 2017
 distributionBase=GRADLE_USER_HOME
 distributionPath=wrapper/dists
 zipStoreBase=GRADLE_USER_HOME
 zipStorePath=wrapper/dists
-distributionUrl=https\://services.gradle.org/distributions/gradle-2.14.1-all.zip
+distributionUrl=https\://services.gradle.org/distributions/gradle-3.3-all.zip