Java tutorial
/* * Copyright 2012 Google Inc. * * Licensed under the Apache License, Version 2.0 (the "License"); you may not * use this file except in compliance with the License. You may obtain a copy of * the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the * License for the specific language governing permissions and limitations under * the License. */ package br.com.bioscada.apps.biotracks.fragments; import android.accounts.Account; import android.accounts.AccountManager; import android.app.Activity; import android.app.AlertDialog; import android.app.Dialog; import android.content.DialogInterface; import android.os.Bundle; import android.support.v4.app.FragmentActivity; import android.view.View; import android.widget.AdapterView; import android.widget.ArrayAdapter; import android.widget.RadioButton; import android.widget.RadioGroup; import android.widget.Spinner; import com.google.android.lib.mytracks.util.FileUtils; import java.util.ArrayList; import br.com.bioscada.apps.biotracks.Constants; import br.com.bioscada.apps.biotracks.R; import br.com.bioscada.apps.biotracks.io.file.TrackFileFormat; import br.com.bioscada.apps.biotracks.util.AccountUtils; import br.com.bioscada.apps.biotracks.util.PreferencesUtils; /** * A DialogFragment to export a track. * * @author Jimmy Shih */ public class ExportDialogFragment extends AbstractMyTracksDialogFragment { /** * Export types. * * @author Jimmy Shih */ public enum ExportType { GOOGLE_DRIVE(R.string.export_google_drive), GOOGLE_MAPS(R.string.export_google_maps), GOOGLE_FUSION_TABLES( R.string.export_google_fusion_tables), GOOGLE_SPREADSHEET( R.string.export_google_spreadsheets), EXTERNAL_STORAGE(R.string.export_external_storage); final int resId; ExportType(int resId) { this.resId = resId; } } /** * Interface for caller of this dialog fragment. * * @author Jimmy Shih */ public interface ExportCaller { /** * Called when export is done. * * @param exportType the export type * @param trackFileFormat the track file format * @param account the account */ public void onExportDone(ExportType exportType, TrackFileFormat trackFileFormat, Account account); } public static final String EXPORT_DIALOG_TAG = "export"; private static final String KEY_HIDE_DRIVE = "hideDrive"; public static ExportDialogFragment newInstance(boolean hideDrive) { Bundle bundle = new Bundle(); bundle.putBoolean(KEY_HIDE_DRIVE, hideDrive); ExportDialogFragment fragment = new ExportDialogFragment(); fragment.setArguments(bundle); return fragment; } private ExportCaller caller; private Account[] accounts; private ArrayList<ExportType> exportTypeOptionsList; // UI elements private Spinner exportTypeOptions; private RadioGroup exportGoogleMapsOptions; private RadioGroup exportGoogleFusionTablesOptions; private RadioGroup exportExternalStorageOptions; private Spinner accountSpinner; @Override public void onAttach(Activity activity) { super.onAttach(activity); try { caller = (ExportCaller) activity; } catch (ClassCastException e) { throw new ClassCastException( activity.toString() + " must implement " + ExportCaller.class.getSimpleName()); } } @Override protected Dialog createDialog() { FragmentActivity fragmentActivity = getActivity(); accounts = AccountManager.get(fragmentActivity).getAccountsByType(Constants.ACCOUNT_TYPE); // Get views View view = fragmentActivity.getLayoutInflater().inflate(R.layout.export, null); exportTypeOptions = (Spinner) view.findViewById(R.id.export_type_options); exportGoogleMapsOptions = (RadioGroup) view.findViewById(R.id.export_google_maps_options); exportGoogleFusionTablesOptions = (RadioGroup) view.findViewById(R.id.export_google_fusion_tables_options); exportExternalStorageOptions = (RadioGroup) view.findViewById(R.id.export_external_storage_options); accountSpinner = (Spinner) view.findViewById(R.id.export_account); // Setup exportTypeOptions setupExportTypeOptions(fragmentActivity); // Setup exportGoogleMapsOptions boolean exportGoogleMapsPublic = PreferencesUtils.getBoolean(fragmentActivity, R.string.export_google_maps_public_key, PreferencesUtils.EXPORT_GOOGLE_MAPS_PUBLIC_DEFAULT); exportGoogleMapsOptions .check(exportGoogleMapsPublic ? R.id.export_google_maps_public : R.id.export_google_maps_unlisted); // Setup exportGoogleFusionTablesOptions boolean exportGoogleFusionTablesPublic = PreferencesUtils.getBoolean(fragmentActivity, R.string.export_google_fusion_tables_public_key, PreferencesUtils.EXPORT_GOOGLE_FUSION_TABLES_PUBLIC_DEFAULT); exportGoogleFusionTablesOptions .check(exportGoogleFusionTablesPublic ? R.id.export_google_fusion_tables_public : R.id.export_google_fusion_tables_private); // Setup exportExternalStorageOptions setExternalStorageOption((RadioButton) view.findViewById(R.id.export_external_storage_kml), TrackFileFormat.KML); setExternalStorageOption((RadioButton) view.findViewById(R.id.export_external_storage_gpx), TrackFileFormat.GPX); setExternalStorageOption((RadioButton) view.findViewById(R.id.export_external_storage_csv), TrackFileFormat.CSV); setExternalStorageOption((RadioButton) view.findViewById(R.id.export_external_storage_tcx), TrackFileFormat.TCX); TrackFileFormat trackFileFormat = TrackFileFormat .valueOf(PreferencesUtils.getString(fragmentActivity, R.string.export_external_storage_format_key, PreferencesUtils.EXPORT_EXTERNAL_STORAGE_FORMAT_DEFAULT)); exportExternalStorageOptions.check(getExternalStorageFormatId(trackFileFormat)); // Setup accountSpinner AccountUtils.setupAccountSpinner(fragmentActivity, accountSpinner, accounts); return new AlertDialog.Builder(fragmentActivity).setNegativeButton(R.string.generic_cancel, null) .setPositiveButton(R.string.menu_export, new DialogInterface.OnClickListener() { @Override public void onClick(DialogInterface dialog, int which) { FragmentActivity context = getActivity(); ExportType type = exportTypeOptionsList.get(exportTypeOptions.getSelectedItemPosition()); TrackFileFormat format = null; PreferencesUtils.setString(context, R.string.export_type_key, type.name()); if (type == ExportType.GOOGLE_MAPS) { PreferencesUtils.setBoolean(context, R.string.export_google_maps_public_key, exportGoogleMapsOptions .getCheckedRadioButtonId() == R.id.export_google_maps_public); } else if (type == ExportType.GOOGLE_FUSION_TABLES) { PreferencesUtils.setBoolean(context, R.string.export_google_fusion_tables_public_key, exportGoogleFusionTablesOptions .getCheckedRadioButtonId() == R.id.export_google_fusion_tables_public); } else if (type == ExportType.EXTERNAL_STORAGE) { format = getTrackFileFormat(exportExternalStorageOptions.getCheckedRadioButtonId()); PreferencesUtils.setString(context, R.string.export_external_storage_format_key, format.name()); } Account account; if (accounts.length == 0) { account = null; } else if (accounts.length == 1) { account = accounts[0]; } else { account = accounts[accountSpinner.getSelectedItemPosition()]; } AccountUtils.updateShareTrackAccountPreference(context, account); caller.onExportDone(type, format, account); } }).setTitle(R.string.export_title).setView(view).create(); } private void setupExportTypeOptions(FragmentActivity fragmentActivity) { boolean hideDrive = getArguments().getBoolean(KEY_HIDE_DRIVE); ExportType exportType = ExportType.valueOf(PreferencesUtils.getString(fragmentActivity, R.string.export_type_key, PreferencesUtils.EXPORT_TYPE_DEFAULT)); if (hideDrive && exportType == ExportType.GOOGLE_DRIVE) { exportType = ExportType.GOOGLE_MAPS; } exportTypeOptionsList = new ArrayList<ExportDialogFragment.ExportType>(); ArrayAdapter<CharSequence> adapter = new ArrayAdapter<CharSequence>(getActivity(), android.R.layout.simple_spinner_item); if (accounts.length > 0) { if (!hideDrive) { exportTypeOptionsList.add(ExportType.GOOGLE_DRIVE); } exportTypeOptionsList.add(ExportType.GOOGLE_MAPS); exportTypeOptionsList.add(ExportType.GOOGLE_FUSION_TABLES); exportTypeOptionsList.add(ExportType.GOOGLE_SPREADSHEET); } exportTypeOptionsList.add(ExportType.EXTERNAL_STORAGE); int selection = 0; for (int i = 0; i < exportTypeOptionsList.size(); i++) { ExportType type = exportTypeOptionsList.get(i); adapter.add(getString(type.resId)); if (type == exportType) { selection = i; } } adapter.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item); exportTypeOptions.setAdapter(adapter); exportTypeOptions.setSelection(selection); exportTypeOptions.setOnItemSelectedListener(new AdapterView.OnItemSelectedListener() { @Override public void onItemSelected(AdapterView<?> parent, View view, int position, long id) { ExportType type = exportTypeOptionsList.get(position); exportGoogleMapsOptions.setVisibility(type == ExportType.GOOGLE_MAPS ? View.VISIBLE : View.GONE); exportGoogleFusionTablesOptions .setVisibility(type == ExportType.GOOGLE_FUSION_TABLES ? View.VISIBLE : View.GONE); exportExternalStorageOptions .setVisibility(type == ExportType.EXTERNAL_STORAGE ? View.VISIBLE : View.GONE); accountSpinner.setVisibility( accounts.length > 1 && type != ExportType.EXTERNAL_STORAGE ? View.VISIBLE : View.GONE); } @Override public void onNothingSelected(AdapterView<?> parent) { // Safely ignore } }); } /** * Sets an external storage option. * * @param radioButton the radio button * @param trackFileFormat the track file format */ private void setExternalStorageOption(RadioButton radioButton, TrackFileFormat trackFileFormat) { radioButton.setText(getString(R.string.export_external_storage_option, trackFileFormat.name(), FileUtils.getPathDisplayName(trackFileFormat.getExtension()))); } /** * Gets the external storage format id from a track file format. * * @param trackFileFormat the track file format */ private int getExternalStorageFormatId(TrackFileFormat trackFileFormat) { switch (trackFileFormat) { case KML: return R.id.export_external_storage_kml; case GPX: return R.id.export_external_storage_gpx; case CSV: return R.id.export_external_storage_csv; default: return R.id.export_external_storage_tcx; } } /** * Gets the track file format from an external storage format id. * * @param externalStorageFormatId the external storage format id */ private TrackFileFormat getTrackFileFormat(int externalStorageFormatId) { switch (externalStorageFormatId) { case R.id.export_external_storage_kml: return TrackFileFormat.KML; case R.id.export_external_storage_gpx: return TrackFileFormat.GPX; case R.id.export_external_storage_csv: return TrackFileFormat.CSV; default: return TrackFileFormat.TCX; } } }