Create one flavor with Google Cast support and one (free) without

1 files changed, 953 insertions, 0 deletions

diff --git a/app/src/play/java/de/danoeh/antennapod/preferences/PreferenceController.java b/app/src/play/java/de/danoeh/antennapod/preferences/PreferenceController.java
new file mode 100644
index 000000000..183ef338a
--- /dev/null
+++ b/app/src/play/java/de/danoeh/antennapod/preferences/PreferenceController.java
@@ -0,0 +1,953 @@
+package de.danoeh.antennapod.preferences;
+
+import android.Manifest;
+import android.annotation.SuppressLint;
+import android.app.Activity;
+import android.app.TimePickerDialog;
+import android.content.ActivityNotFoundException;
+import android.content.Context;
+import android.content.Intent;
+import android.content.SharedPreferences;
+import android.content.pm.PackageManager;
+import android.content.res.Resources;
+import android.net.Uri;
+import android.net.wifi.WifiConfiguration;
+import android.net.wifi.WifiManager;
+import android.os.Build;
+import android.preference.CheckBoxPreference;
+import android.preference.EditTextPreference;
+import android.preference.ListPreference;
+import android.preference.Preference;
+import android.preference.PreferenceManager;
+import android.preference.PreferenceScreen;
+import android.support.design.widget.Snackbar;
+import android.support.v4.app.ActivityCompat;
+import android.support.v4.content.ContextCompat;
+import android.support.v7.app.AlertDialog;
+import android.text.Editable;
+import android.text.Html;
+import android.text.TextWatcher;
+import android.text.format.DateFormat;
+import android.util.Log;
+import android.widget.EditText;
+import android.widget.Toast;
+import android.widget.ListView;
+
+import com.afollestad.materialdialogs.MaterialDialog;
+import com.google.android.gms.common.ConnectionResult;
+import com.google.android.gms.common.GoogleApiAvailability;
+
+import org.apache.commons.lang3.ArrayUtils;
+
+import java.io.File;
+import java.util.ArrayList;
+import java.util.Arrays;
+import java.util.Calendar;
+import java.util.GregorianCalendar;
+import java.util.List;
+import java.util.concurrent.TimeUnit;
+
+import de.danoeh.antennapod.CrashReportWriter;
+import de.danoeh.antennapod.R;
+import de.danoeh.antennapod.activity.AboutActivity;
+import de.danoeh.antennapod.activity.DirectoryChooserActivity;
+import de.danoeh.antennapod.activity.MainActivity;
+import de.danoeh.antennapod.activity.PreferenceActivity;
+import de.danoeh.antennapod.activity.PreferenceActivityGingerbread;
+import de.danoeh.antennapod.activity.StatisticsActivity;
+import de.danoeh.antennapod.asynctask.OpmlExportWorker;
+import de.danoeh.antennapod.core.preferences.GpodnetPreferences;
+import de.danoeh.antennapod.core.preferences.UserPreferences;
+import de.danoeh.antennapod.core.service.GpodnetSyncService;
+import de.danoeh.antennapod.core.util.Converter;
+import de.danoeh.antennapod.core.util.StorageUtils;
+import de.danoeh.antennapod.core.util.flattr.FlattrUtils;
+import de.danoeh.antennapod.dialog.AuthenticationDialog;
+import de.danoeh.antennapod.dialog.AutoFlattrPreferenceDialog;
+import de.danoeh.antennapod.dialog.GpodnetSetHostnameDialog;
+import de.danoeh.antennapod.dialog.ProxyDialog;
+import de.danoeh.antennapod.dialog.VariableSpeedDialog;
+
+/**
+ * Sets up a preference UI that lets the user change user preferences.
+ */
+
+public class PreferenceController implements SharedPreferences.OnSharedPreferenceChangeListener {
+
+    private static final String TAG = "PreferenceController";
+
+    public static final String PREF_FLATTR_SETTINGS = "prefFlattrSettings";
+    public static final String PREF_FLATTR_AUTH = "pref_flattr_authenticate";
+    public static final String PREF_FLATTR_REVOKE = "prefRevokeAccess";
+    public static final String PREF_AUTO_FLATTR_PREFS = "prefAutoFlattrPrefs";
+    public static final String PREF_OPML_EXPORT = "prefOpmlExport";
+    public static final String STATISTICS = "statistics";
+    public static final String PREF_ABOUT = "prefAbout";
+    public static final String PREF_CHOOSE_DATA_DIR = "prefChooseDataDir";
+    public static final String AUTO_DL_PREF_SCREEN = "prefAutoDownloadSettings";
+    public static final String PREF_PLAYBACK_SPEED_LAUNCHER = "prefPlaybackSpeedLauncher";
+    public static final String PREF_GPODNET_LOGIN = "pref_gpodnet_authenticate";
+    public static final String PREF_GPODNET_SETLOGIN_INFORMATION = "pref_gpodnet_setlogin_information";
+    public static final String PREF_GPODNET_SYNC = "pref_gpodnet_sync";
+    public static final String PREF_GPODNET_LOGOUT = "pref_gpodnet_logout";
+    public static final String PREF_GPODNET_HOSTNAME = "pref_gpodnet_hostname";
+    public static final String PREF_EXPANDED_NOTIFICATION = "prefExpandNotify";
+    public static final String PREF_PROXY = "prefProxy";
+    public static final String PREF_KNOWN_ISSUES = "prefKnownIssues";
+    public static final String PREF_FAQ = "prefFaq";
+    public static final String PREF_SEND_CRASH_REPORT = "prefSendCrashReport";
+
+    private final PreferenceUI ui;
+
+    private CheckBoxPreference[] selectedNetworks;
+
+    private static final String[] EXTERNAL_STORAGE_PERMISSIONS = {
+            Manifest.permission.READ_EXTERNAL_STORAGE,
+            Manifest.permission.WRITE_EXTERNAL_STORAGE };
+    private static final int PERMISSION_REQUEST_EXTERNAL_STORAGE = 41;
+
+    public PreferenceController(PreferenceUI ui) {
+        this.ui = ui;
+        PreferenceManager.getDefaultSharedPreferences(ui.getActivity().getApplicationContext())
+            .registerOnSharedPreferenceChangeListener(this);
+    }
+
+    @Override
+    public void onSharedPreferenceChanged(SharedPreferences sharedPreferences, String key) {
+        if(key.equals(UserPreferences.PREF_SONIC)) {
+            CheckBoxPreference prefSonic = (CheckBoxPreference) ui.findPreference(UserPreferences.PREF_SONIC);
+            if(prefSonic != null) {
+                prefSonic.setChecked(sharedPreferences.getBoolean(UserPreferences.PREF_SONIC, false));
+            }
+        }
+    }
+
+    /**
+     * Returns the preference activity that should be used on this device.
+     *
+     * @return PreferenceActivity if the API level is greater than 10, PreferenceActivityGingerbread otherwise.
+     */
+    public static Class<? extends Activity> getPreferenceActivity() {
+        if (Build.VERSION.SDK_INT > 10) {
+            return PreferenceActivity.class;
+        } else {
+            return PreferenceActivityGingerbread.class;
+        }
+    }
+
+    public void onCreate() {
+        final Activity activity = ui.getActivity();
+
+        if (android.os.Build.VERSION.SDK_INT < Build.VERSION_CODES.JELLY_BEAN) {
+            // disable expanded notification option on unsupported android versions
+            ui.findPreference(PreferenceController.PREF_EXPANDED_NOTIFICATION).setEnabled(false);
+            ui.findPreference(PreferenceController.PREF_EXPANDED_NOTIFICATION).setOnPreferenceClickListener(
+                    preference -> {
+                        Toast toast = Toast.makeText(activity,
+                                R.string.pref_expand_notify_unsupport_toast, Toast.LENGTH_SHORT);
+                        toast.show();
+                        return true;
+                    }
+            );
+        }
+        ui.findPreference(PreferenceController.PREF_FLATTR_REVOKE).setOnPreferenceClickListener(
+                preference -> {
+                    FlattrUtils.revokeAccessToken(activity);
+                    checkItemVisibility();
+                    return true;
+                }
+        );
+        ui.findPreference(PreferenceController.PREF_ABOUT).setOnPreferenceClickListener(
+                preference -> {
+                    activity.startActivity(new Intent(activity, AboutActivity.class));
+                    return true;
+                }
+        );
+        ui.findPreference(PreferenceController.STATISTICS).setOnPreferenceClickListener(
+                preference -> {
+                    activity.startActivity(new Intent(activity, StatisticsActivity.class));
+                    return true;
+                }
+        );
+        ui.findPreference(PreferenceController.PREF_OPML_EXPORT).setOnPreferenceClickListener(
+                preference -> {
+                    new OpmlExportWorker(activity).executeAsync();
+                    return true;
+                }
+        );
+        ui.findPreference(PreferenceController.PREF_CHOOSE_DATA_DIR).setOnPreferenceClickListener(
+                preference -> {
+                    if (Build.VERSION_CODES.KITKAT <= Build.VERSION.SDK_INT &&
+                            Build.VERSION.SDK_INT <= Build.VERSION_CODES.LOLLIPOP_MR1) {
+                        showChooseDataFolderDialog();
+                    } else {
+                        int readPermission = ActivityCompat.checkSelfPermission(
+                                activity, Manifest.permission.READ_EXTERNAL_STORAGE);
+                        int writePermission = ActivityCompat.checkSelfPermission(
+                                activity, Manifest.permission.WRITE_EXTERNAL_STORAGE);
+                        if (readPermission == PackageManager.PERMISSION_GRANTED &&
+                                writePermission == PackageManager.PERMISSION_GRANTED) {
+                            openDirectoryChooser();
+                        } else {
+                            requestPermission();
+                        }
+                    }
+                    return true;
+                }
+        );
+        ui.findPreference(PreferenceController.PREF_CHOOSE_DATA_DIR)
+                .setOnPreferenceClickListener(
+                        preference -> {
+                            if (Build.VERSION.SDK_INT >= 19) {
+                                showChooseDataFolderDialog();
+                            } else {
+                                Intent intent = new Intent(activity, DirectoryChooserActivity.class);
+                                activity.startActivityForResult(intent,
+                                        DirectoryChooserActivity.RESULT_CODE_DIR_SELECTED);
+                            }
+                            return true;
+                        }
+                );
+        ui.findPreference(UserPreferences.PREF_THEME)
+                .setOnPreferenceChangeListener(
+                        (preference, newValue) -> {
+                            Intent i = new Intent(activity, MainActivity.class);
+                            i.setFlags(Intent.FLAG_ACTIVITY_CLEAR_TASK
+                                    | Intent.FLAG_ACTIVITY_NEW_TASK);
+                            activity.finish();
+                            activity.startActivity(i);
+                            return true;
+                        }
+                );
+        ui.findPreference(UserPreferences.PREF_HIDDEN_DRAWER_ITEMS)
+                .setOnPreferenceClickListener(preference -> {
+                    showDrawerPreferencesDialog();
+                    return true;
+                });
+
+        ui.findPreference(UserPreferences.PREF_COMPACT_NOTIFICATION_BUTTONS)
+                .setOnPreferenceClickListener(preference -> {
+                    showNotificationButtonsDialog();
+                    return true;
+                });
+
+        ui.findPreference(UserPreferences.PREF_UPDATE_INTERVAL)
+                .setOnPreferenceClickListener(preference -> {
+                    showUpdateIntervalTimePreferencesDialog();
+                    return true;
+                });
+
+        ui.findPreference(UserPreferences.PREF_ENABLE_AUTODL).setOnPreferenceChangeListener(
+                (preference, newValue) -> {
+                    if (newValue instanceof Boolean) {
+                        boolean enabled = (Boolean) newValue;
+                        ui.findPreference(UserPreferences.PREF_EPISODE_CACHE_SIZE).setEnabled(enabled);
+                        ui.findPreference(UserPreferences.PREF_ENABLE_AUTODL_ON_BATTERY).setEnabled(enabled);
+                        ui.findPreference(UserPreferences.PREF_ENABLE_AUTODL_WIFI_FILTER).setEnabled(enabled);
+                        setSelectedNetworksEnabled(enabled && UserPreferences.isEnableAutodownloadWifiFilter());
+                    }
+                    return true;
+                });
+        ui.findPreference(UserPreferences.PREF_ENABLE_AUTODL_WIFI_FILTER)
+                .setOnPreferenceChangeListener(
+                        (preference, newValue) -> {
+                            if (newValue instanceof Boolean) {
+                                setSelectedNetworksEnabled((Boolean) newValue);
+                                return true;
+                            } else {
+                                return false;
+                            }
+                        }
+                );
+        ui.findPreference(UserPreferences.PREF_PARALLEL_DOWNLOADS)
+                .setOnPreferenceChangeListener(
+                        (preference, o) -> {
+                            if (o instanceof String) {
+                                try {
+                                    int value = Integer.parseInt((String) o);
+                                    if (1 <= value && value <= 50) {
+                                        setParallelDownloadsText(value);
+                                        return true;
+                                    }
+                                } catch (NumberFormatException e) {
+                                    return false;
+                                }
+                            }
+                            return false;
+                        }
+                );
+        // validate and set correct value: number of downloads between 1 and 50 (inclusive)
+        final EditText ev = ((EditTextPreference) ui.findPreference(UserPreferences.PREF_PARALLEL_DOWNLOADS)).getEditText();
+        ev.addTextChangedListener(new TextWatcher() {
+            @Override
+            public void beforeTextChanged(CharSequence s, int start, int count, int after) {
+            }
+
+            @Override
+            public void onTextChanged(CharSequence s, int start, int before, int count) {
+            }
+
+            @Override
+            public void afterTextChanged(Editable s) {
+                if (s.length() > 0) {
+                    try {
+                        int value = Integer.parseInt(s.toString());
+                        if (value <= 0) {
+                            ev.setText("1");
+                        } else if (value > 50) {
+                            ev.setText("50");
+                        }
+                    } catch (NumberFormatException e) {
+                        ev.setText("6");
+                    }
+                    ev.setSelection(ev.getText().length());
+                }
+            }
+        });
+        ui.findPreference(UserPreferences.PREF_EPISODE_CACHE_SIZE)
+                .setOnPreferenceChangeListener(
+                        (preference, o) -> {
+                            if (o instanceof String) {
+                                setEpisodeCacheSizeText(UserPreferences.readEpisodeCacheSize((String) o));
+                            }
+                            return true;
+                        }
+                );
+        ui.findPreference(PreferenceController.PREF_PLAYBACK_SPEED_LAUNCHER)
+                .setOnPreferenceClickListener(preference -> {
+                    VariableSpeedDialog.showDialog(activity);
+                    return true;
+                });
+        ui.findPreference(PreferenceController.PREF_GPODNET_SETLOGIN_INFORMATION)
+                .setOnPreferenceClickListener(preference -> {
+                    AuthenticationDialog dialog = new AuthenticationDialog(activity,
+                            R.string.pref_gpodnet_setlogin_information_title, false, false, GpodnetPreferences.getUsername(),
+                            null) {
+
+                        @Override
+                        protected void onConfirmed(String username, String password, boolean saveUsernamePassword) {
+                            GpodnetPreferences.setPassword(password);
+                        }
+                    };
+                    dialog.show();
+                    return true;
+                });
+        ui.findPreference(PreferenceController.PREF_GPODNET_SYNC).
+                setOnPreferenceClickListener(preference -> {
+                    GpodnetSyncService.sendSyncIntent(ui.getActivity().getApplicationContext());
+                    Toast toast = Toast.makeText(ui.getActivity(), R.string.pref_gpodnet_sync_started,
+                            Toast.LENGTH_SHORT);
+                    toast.show();
+                    return true;
+                });
+        ui.findPreference(PreferenceController.PREF_GPODNET_LOGOUT).setOnPreferenceClickListener(
+                preference -> {
+                    GpodnetPreferences.logout();
+                    Toast toast = Toast.makeText(activity, R.string.pref_gpodnet_logout_toast, Toast.LENGTH_SHORT);
+                    toast.show();
+                    updateGpodnetPreferenceScreen();
+                    return true;
+                });
+        ui.findPreference(PreferenceController.PREF_GPODNET_HOSTNAME).setOnPreferenceClickListener(
+                preference -> {
+                    GpodnetSetHostnameDialog.createDialog(activity).setOnDismissListener(dialog -> updateGpodnetPreferenceScreen());
+                    return true;
+                });
+
+        ui.findPreference(PreferenceController.PREF_AUTO_FLATTR_PREFS)
+                .setOnPreferenceClickListener(preference -> {
+                    AutoFlattrPreferenceDialog.newAutoFlattrPreferenceDialog(activity,
+                            new AutoFlattrPreferenceDialog.AutoFlattrPreferenceDialogInterface() {
+                                @Override
+                                public void onCancelled() {
+
+                                }
+
+                                @Override
+                                public void onConfirmed(boolean autoFlattrEnabled, float autoFlattrValue) {
+                                    UserPreferences.setAutoFlattrSettings(autoFlattrEnabled, autoFlattrValue);
+                                    checkItemVisibility();
+                                }
+                            });
+                    return true;
+                });
+        ui.findPreference(UserPreferences.PREF_IMAGE_CACHE_SIZE).setOnPreferenceChangeListener(
+                (preference, o) -> {
+                    if (o instanceof String) {
+                        int newValue = Integer.parseInt((String) o) * 1024 * 1024;
+                        if (newValue != UserPreferences.getImageCacheSize()) {
+                            AlertDialog.Builder dialog = new AlertDialog.Builder(ui.getActivity());
+                            dialog.setTitle(android.R.string.dialog_alert_title);
+                            dialog.setMessage(R.string.pref_restart_required);
+                            dialog.setPositiveButton(android.R.string.ok, null);
+                            dialog.show();
+                        }
+                        return true;
+                    }
+                    return false;
+                }
+        );
+        ui.findPreference(PREF_PROXY).setOnPreferenceClickListener(preference -> {
+            ProxyDialog dialog = new ProxyDialog(ui.getActivity());
+            dialog.createDialog().show();
+            return true;
+        });
+        ui.findPreference(PREF_KNOWN_ISSUES).setOnPreferenceClickListener(preference -> {
+            openInBrowser("https://github.com/AntennaPod/AntennaPod/labels/bug");
+            return true;
+        });
+        ui.findPreference(PREF_FAQ).setOnPreferenceClickListener(preference -> {
+            openInBrowser("http://antennapod.org/faq.html");
+            return true;
+        });
+        ui.findPreference(PREF_SEND_CRASH_REPORT).setOnPreferenceClickListener(preference -> {
+            Intent emailIntent = new Intent(Intent.ACTION_SEND);
+            emailIntent.setType("text/plain");
+            emailIntent.putExtra(Intent.EXTRA_EMAIL, new String[]{"Martin.Fietz@gmail.com"});
+            emailIntent.putExtra(Intent.EXTRA_SUBJECT, "AntennaPod Crash Report");
+            emailIntent.putExtra(Intent.EXTRA_TEXT, "Please describe what you were doing when the app crashed");
+            // the attachment
+            emailIntent.putExtra(Intent.EXTRA_STREAM, Uri.fromFile(CrashReportWriter.getFile()));
+            String intentTitle = ui.getActivity().getString(R.string.send_email);
+            ui.getActivity().startActivity(Intent.createChooser(emailIntent, intentTitle));
+            return true;
+        });
+        //checks whether Google Play Services is installed on the device (condition necessary for Cast support)
+        ui.findPreference(UserPreferences.PREF_CAST_ENABLED).setOnPreferenceChangeListener((preference, o) -> {
+            if (o instanceof Boolean && ((Boolean) o)) {
+                final int googlePlayServicesCheck = GoogleApiAvailability.getInstance()
+                        .isGooglePlayServicesAvailable(ui.getActivity());
+                if (googlePlayServicesCheck == ConnectionResult.SUCCESS) {
+                    return true;
+                } else {
+                    GoogleApiAvailability.getInstance()
+                            .getErrorDialog(ui.getActivity(), googlePlayServicesCheck, 0)
+                            .show();
+                    return false;
+                }
+            }
+            return true;
+        });
+        buildEpisodeCleanupPreference();
+        buildSmartMarkAsPlayedPreference();
+        buildAutodownloadSelectedNetworsPreference();
+        setSelectedNetworksEnabled(UserPreferences.isEnableAutodownloadWifiFilter());
+    }
+
+    private void openInBrowser(String url) {
+        try {
+            Intent myIntent = new Intent(Intent.ACTION_VIEW, Uri.parse(url));
+            ui.getActivity().startActivity(myIntent);
+        } catch (ActivityNotFoundException e) {
+            Toast.makeText(ui.getActivity(), R.string.pref_no_browser_found, Toast.LENGTH_LONG).show();
+            Log.e(TAG, Log.getStackTraceString(e));
+        }
+    }
+
+    public void onResume() {
+        checkItemVisibility();
+        setUpdateIntervalText();
+        setParallelDownloadsText(UserPreferences.getParallelDownloads());
+        setEpisodeCacheSizeText(UserPreferences.getEpisodeCacheSize());
+        setDataFolderText();
+        updateGpodnetPreferenceScreen();
+    }
+
+    @SuppressLint("NewApi")
+    public void onActivityResult(int requestCode, int resultCode, Intent data) {
+        if (resultCode == Activity.RESULT_OK &&
+                requestCode == DirectoryChooserActivity.RESULT_CODE_DIR_SELECTED) {
+            String dir = data.getStringExtra(DirectoryChooserActivity.RESULT_SELECTED_DIR);
+
+            File path;
+            if(dir != null) {
+                path = new File(dir);
+            } else {
+                path = ui.getActivity().getExternalFilesDir(null);
+            }
+            String message = null;
+            final Context context= ui.getActivity().getApplicationContext();
+            if(!path.exists()) {
+                message = String.format(context.getString(R.string.folder_does_not_exist_error), dir);
+            } else if(!path.canRead()) {
+                message = String.format(context.getString(R.string.folder_not_readable_error), dir);
+            } else if(!path.canWrite()) {
+                message = String.format(context.getString(R.string.folder_not_writable_error), dir);
+            }
+
+            if(message == null) {
+                Log.d(TAG, "Setting data folder: " + dir);
+                UserPreferences.setDataFolder(dir);
+                setDataFolderText();
+            } else {
+                AlertDialog.Builder ab = new AlertDialog.Builder(ui.getActivity());
+                ab.setMessage(message);
+                ab.setPositiveButton(android.R.string.ok, null);
+                ab.show();
+            }
+        }
+    }
+
+
+    private void updateGpodnetPreferenceScreen() {
+        final boolean loggedIn = GpodnetPreferences.loggedIn();
+        ui.findPreference(PreferenceController.PREF_GPODNET_LOGIN).setEnabled(!loggedIn);
+        ui.findPreference(PreferenceController.PREF_GPODNET_SETLOGIN_INFORMATION).setEnabled(loggedIn);
+        ui.findPreference(PreferenceController.PREF_GPODNET_SYNC).setEnabled(loggedIn);
+        ui.findPreference(PreferenceController.PREF_GPODNET_LOGOUT).setEnabled(loggedIn);
+        if(loggedIn) {
+            String format = ui.getActivity().getString(R.string.pref_gpodnet_login_status);
+            String summary = String.format(format, GpodnetPreferences.getUsername(),
+                    GpodnetPreferences.getDeviceID());
+            ui.findPreference(PreferenceController.PREF_GPODNET_LOGOUT).setSummary(Html.fromHtml(summary));
+        } else {
+            ui.findPreference(PreferenceController.PREF_GPODNET_LOGOUT).setSummary(null);
+        }
+        ui.findPreference(PreferenceController.PREF_GPODNET_HOSTNAME).setSummary(GpodnetPreferences.getHostname());
+    }
+
+    private String[] getUpdateIntervalEntries(final String[] values) {
+        final Resources res = ui.getActivity().getResources();
+        String[] entries = new String[values.length];
+        for (int x = 0; x < values.length; x++) {
+            Integer v = Integer.parseInt(values[x]);
+            switch (v) {
+                case 0:
+                    entries[x] = res.getString(R.string.pref_update_interval_hours_manual);
+                    break;
+                case 1:
+                    entries[x] = v + " " + res.getString(R.string.pref_update_interval_hours_singular);
+                    break;
+                default:
+                    entries[x] = v + " " + res.getString(R.string.pref_update_interval_hours_plural);
+                    break;
+
+            }
+        }
+        return entries;
+    }
+
+    private void buildEpisodeCleanupPreference() {
+        final Resources res = ui.getActivity().getResources();
+
+        ListPreference pref = (ListPreference) ui.findPreference(UserPreferences.PREF_EPISODE_CLEANUP);
+        String[] values = res.getStringArray(
+                R.array.episode_cleanup_values);
+        String[] entries = new String[values.length];
+        for (int x = 0; x < values.length; x++) {
+            int v = Integer.parseInt(values[x]);
+            if (v == UserPreferences.EPISODE_CLEANUP_QUEUE) {
+                entries[x] = res.getString(R.string.episode_cleanup_queue_removal);
+            } else if (v == UserPreferences.EPISODE_CLEANUP_NULL){
+                entries[x] = res.getString(R.string.episode_cleanup_never);
+            } else if (v == 0) {
+                entries[x] = res.getString(R.string.episode_cleanup_after_listening);
+            } else {
+                entries[x] = res.getQuantityString(R.plurals.episode_cleanup_days_after_listening, v, v);
+            }
+        }
+        pref.setEntries(entries);
+    }
+
+    private void buildSmartMarkAsPlayedPreference() {
+        final Resources res = ui.getActivity().getResources();
+
+        ListPreference pref = (ListPreference) ui.findPreference(UserPreferences.PREF_SMART_MARK_AS_PLAYED_SECS);
+        String[] values = res.getStringArray(R.array.smart_mark_as_played_values);
+        String[] entries = new String[values.length];
+        for (int x = 0; x < values.length; x++) {
+            if(x == 0) {
+                entries[x] = res.getString(R.string.pref_smart_mark_as_played_disabled);
+            } else {
+                Integer v = Integer.parseInt(values[x]);
+                if(v < 60) {
+                    entries[x] = res.getQuantityString(R.plurals.time_seconds_quantified, v, v);
+                } else {
+                    v /= 60;
+                    entries[x] = res.getQuantityString(R.plurals.time_minutes_quantified, v, v);
+                }
+            }
+        }
+        pref.setEntries(entries);
+    }
+
+    private void setSelectedNetworksEnabled(boolean b) {
+        if (selectedNetworks != null) {
+            for (Preference p : selectedNetworks) {
+                p.setEnabled(b);
+            }
+        }
+    }
+
+    @SuppressWarnings("deprecation")
+    private void checkItemVisibility() {
+        boolean hasFlattrToken = FlattrUtils.hasToken();
+        ui.findPreference(PreferenceController.PREF_FLATTR_SETTINGS).setEnabled(FlattrUtils.hasAPICredentials());
+        ui.findPreference(PreferenceController.PREF_FLATTR_AUTH).setEnabled(!hasFlattrToken);
+        ui.findPreference(PreferenceController.PREF_FLATTR_REVOKE).setEnabled(hasFlattrToken);
+        ui.findPreference(PreferenceController.PREF_AUTO_FLATTR_PREFS).setEnabled(hasFlattrToken);
+
+        boolean autoDownload = UserPreferences.isEnableAutodownload();
+        ui.findPreference(UserPreferences.PREF_EPISODE_CACHE_SIZE).setEnabled(autoDownload);
+        ui.findPreference(UserPreferences.PREF_ENABLE_AUTODL_ON_BATTERY).setEnabled(autoDownload);
+        ui.findPreference(UserPreferences.PREF_ENABLE_AUTODL_WIFI_FILTER).setEnabled(autoDownload);
+        setSelectedNetworksEnabled(autoDownload && UserPreferences.isEnableAutodownloadWifiFilter());
+
+        ui.findPreference(PREF_SEND_CRASH_REPORT).setEnabled(CrashReportWriter.getFile().exists());
+
+        if (Build.VERSION.SDK_INT >= 16) {
+            ui.findPreference(UserPreferences.PREF_SONIC).setEnabled(true);
+        } else {
+            Preference prefSonic = ui.findPreference(UserPreferences.PREF_SONIC);
+            prefSonic.setSummary("[Android 4.1+]\n" + prefSonic.getSummary());
+        }
+    }
+
+    private void setUpdateIntervalText() {
+        Context context = ui.getActivity().getApplicationContext();
+        String val;
+        long interval = UserPreferences.getUpdateInterval();
+        if(interval > 0) {
+            int hours = (int) TimeUnit.MILLISECONDS.toHours(interval);
+            String hoursStr = context.getResources().getQuantityString(R.plurals.time_hours_quantified, hours, hours);
+            val = String.format(context.getString(R.string.pref_autoUpdateIntervallOrTime_every), hoursStr);
+        } else {
+            int[] timeOfDay = UserPreferences.getUpdateTimeOfDay();
+            if(timeOfDay.length == 2) {
+                Calendar cal = new GregorianCalendar();
+                cal.set(Calendar.HOUR_OF_DAY, timeOfDay[0]);
+                cal.set(Calendar.MINUTE, timeOfDay[1]);
+                String timeOfDayStr = DateFormat.getTimeFormat(context).format(cal.getTime());
+                val = String.format(context.getString(R.string.pref_autoUpdateIntervallOrTime_at),
+                        timeOfDayStr);
+            } else {
+                val = context.getString(R.string.pref_smart_mark_as_played_disabled);
+            }
+        }
+        String summary = context.getString(R.string.pref_autoUpdateIntervallOrTime_sum) + "\n"
+                + String.format(context.getString(R.string.pref_current_value), val);
+        ui.findPreference(UserPreferences.PREF_UPDATE_INTERVAL).setSummary(summary);
+    }
+
+    private void setParallelDownloadsText(int downloads) {
+        final Resources res = ui.getActivity().getResources();
+
+        String s = Integer.toString(downloads)
+                    + res.getString(R.string.parallel_downloads_suffix);
+        ui.findPreference(UserPreferences.PREF_PARALLEL_DOWNLOADS).setSummary(s);
+    }
+
+    private void setEpisodeCacheSizeText(int cacheSize) {
+        final Resources res = ui.getActivity().getResources();
+
+        String s;
+        if (cacheSize == res.getInteger(
+                R.integer.episode_cache_size_unlimited)) {
+            s = res.getString(R.string.pref_episode_cache_unlimited);
+        } else {
+            s = Integer.toString(cacheSize)
+                    + res.getString(R.string.episodes_suffix);
+        }
+        ui.findPreference(UserPreferences.PREF_EPISODE_CACHE_SIZE).setSummary(s);
+    }
+
+    private void setDataFolderText() {
+        File f = UserPreferences.getDataFolder(null);
+        if (f != null) {
+            ui.findPreference(PreferenceController.PREF_CHOOSE_DATA_DIR)
+                    .setSummary(f.getAbsolutePath());
+        }
+    }
+
+    private void buildAutodownloadSelectedNetworsPreference() {
+        final Activity activity = ui.getActivity();
+
+        if (selectedNetworks != null) {
+            clearAutodownloadSelectedNetworsPreference();
+        }
+        // get configured networks
+        WifiManager wifiservice = (WifiManager) activity.getSystemService(Context.WIFI_SERVICE);
+        List<WifiConfiguration> networks = wifiservice.getConfiguredNetworks();
+
+        if (networks != null) {
+            selectedNetworks = new CheckBoxPreference[networks.size()];
+            List<String> prefValues = Arrays.asList(UserPreferences
+                    .getAutodownloadSelectedNetworks());
+            PreferenceScreen prefScreen = (PreferenceScreen) ui.findPreference(PreferenceController.AUTO_DL_PREF_SCREEN);
+            Preference.OnPreferenceClickListener clickListener = preference -> {
+                if (preference instanceof CheckBoxPreference) {
+                    String key = preference.getKey();
+                    List<String> prefValuesList = new ArrayList<>(
+                            Arrays.asList(UserPreferences
+                                    .getAutodownloadSelectedNetworks())
+                    );
+                    boolean newValue = ((CheckBoxPreference) preference)
+                            .isChecked();
+                    Log.d(TAG, "Selected network " + key + ". New state: " + newValue);
+
+                    int index = prefValuesList.indexOf(key);
+                    if (index >= 0 && !newValue) {
+                        // remove network
+                        prefValuesList.remove(index);
+                    } else if (index < 0 && newValue) {
+                        prefValuesList.add(key);
+                    }
+
+                    UserPreferences.setAutodownloadSelectedNetworks(
+                            prefValuesList.toArray(new String[prefValuesList.size()])
+                    );
+                    return true;
+                } else {
+                    return false;
+                }
+            };
+            // create preference for each known network. attach listener and set
+            // value
+            for (int i = 0; i < networks.size(); i++) {
+                WifiConfiguration config = networks.get(i);
+
+                CheckBoxPreference pref = new CheckBoxPreference(activity);
+                String key = Integer.toString(config.networkId);
+                pref.setTitle(config.SSID);
+                pref.setKey(key);
+                pref.setOnPreferenceClickListener(clickListener);
+                pref.setPersistent(false);
+                pref.setChecked(prefValues.contains(key));
+                selectedNetworks[i] = pref;
+                prefScreen.addPreference(pref);
+            }
+        } else {
+            Log.e(TAG, "Couldn't get list of configure Wi-Fi networks");
+        }
+    }
+
+    private void clearAutodownloadSelectedNetworsPreference() {
+        if (selectedNetworks != null) {
+            PreferenceScreen prefScreen = (PreferenceScreen) ui.findPreference(PreferenceController.AUTO_DL_PREF_SCREEN);
+
+            for (CheckBoxPreference network : selectedNetworks) {
+                if (network != null) {
+                    prefScreen.removePreference(network);
+                }
+            }
+        }
+    }
+
+    private void showDrawerPreferencesDialog() {
+        final Context context = ui.getActivity();
+        final List<String> hiddenDrawerItems = UserPreferences.getHiddenDrawerItems();
+        final String[] navTitles = context.getResources().getStringArray(R.array.nav_drawer_titles);
+        final String[] NAV_DRAWER_TAGS = MainActivity.NAV_DRAWER_TAGS;
+        boolean[] checked = new boolean[MainActivity.NAV_DRAWER_TAGS.length];
+        for(int i=0; i < NAV_DRAWER_TAGS.length; i++) {
+            String tag = NAV_DRAWER_TAGS[i];
+            if(!hiddenDrawerItems.contains(tag)) {
+                checked[i] = true;
+            }
+        }
+        AlertDialog.Builder builder = new AlertDialog.Builder(context);
+        builder.setTitle(R.string.drawer_preferences);
+        builder.setMultiChoiceItems(navTitles, checked, (dialog, which, isChecked) -> {
+            if (isChecked) {
+                hiddenDrawerItems.remove(NAV_DRAWER_TAGS[which]);
+            } else {
+                hiddenDrawerItems.add(NAV_DRAWER_TAGS[which]);
+            }
+        });
+        builder.setPositiveButton(R.string.confirm_label, (dialog, which) -> {
+            UserPreferences.setHiddenDrawerItems(hiddenDrawerItems);
+        });
+        builder.setNegativeButton(R.string.cancel_label, null);
+        builder.create().show();
+    }
+
+    private void showNotificationButtonsDialog() {
+        final Context context = ui.getActivity();
+        final List<Integer> preferredButtons = UserPreferences.getCompactNotificationButtons();
+        final String[] allButtonNames = context.getResources().getStringArray(
+                R.array.compact_notification_buttons_options);
+        boolean[] checked = new boolean[allButtonNames.length]; // booleans default to false in java
+
+        for(int i=0; i < checked.length; i++) {
+            if(preferredButtons.contains(i)) {
+                checked[i] = true;
+            }
+        }
+
+        AlertDialog.Builder builder = new AlertDialog.Builder(context);
+        builder.setTitle(String.format(context.getResources().getString(
+                R.string.pref_compact_notification_buttons_dialog_title), 2));
+        builder.setMultiChoiceItems(allButtonNames, checked, (dialog, which, isChecked) -> {
+            checked[which] = isChecked;
+
+            if (isChecked) {
+                if (preferredButtons.size() < 2) {
+                    preferredButtons.add(which);
+                } else {
+                    // Only allow a maximum of two selections. This is because the notification
+                    // on the lock screen can only display 3 buttons, and the play/pause button
+                    // is always included.
+                    checked[which] = false;
+                    ListView selectionView = ((AlertDialog) dialog).getListView();
+                    selectionView.setItemChecked(which, false);
+                    Snackbar.make(
+                            selectionView,
+                            String.format(context.getResources().getString(
+                                    R.string.pref_compact_notification_buttons_dialog_error), 2),
+                            Snackbar.LENGTH_SHORT).show();
+                }
+            } else {
+                preferredButtons.remove((Integer) which);
+            }
+        });
+        builder.setPositiveButton(R.string.confirm_label, (dialog, which) -> {
+            UserPreferences.setCompactNotificationButtons(preferredButtons);
+        });
+        builder.setNegativeButton(R.string.cancel_label, null);
+        builder.create().show();
+    }
+
+    // CHOOSE DATA FOLDER
+
+    private void requestPermission() {
+        ActivityCompat.requestPermissions(ui.getActivity(), EXTERNAL_STORAGE_PERMISSIONS,
+                PERMISSION_REQUEST_EXTERNAL_STORAGE);
+    }
+
+    private void openDirectoryChooser() {
+        Activity activity = ui.getActivity();
+        Intent intent = new Intent(activity, DirectoryChooserActivity.class);
+        activity.startActivityForResult(intent, DirectoryChooserActivity.RESULT_CODE_DIR_SELECTED);
+    }
+
+    private void showChooseDataFolderDialog() {
+        Context context = ui.getActivity();
+        File dataFolder =  UserPreferences.getDataFolder(null);
+        if(dataFolder == null) {
+            new MaterialDialog.Builder(ui.getActivity())
+                    .title(R.string.error_label)
+                    .content(R.string.external_storage_error_msg)
+                    .neutralText(android.R.string.ok)
+                    .show();
+            return;
+        }
+        String dataFolderPath = dataFolder.getAbsolutePath();
+        int selectedIndex = -1;
+        File[] mediaDirs = ContextCompat.getExternalFilesDirs(context, null);
+        List<String> folders = new ArrayList<>(mediaDirs.length);
+        List<CharSequence> choices = new ArrayList<>(mediaDirs.length);
+        for(int i=0; i < mediaDirs.length; i++) {
+            File dir = mediaDirs[i];
+            if(dir == null || !dir.exists() || !dir.canRead() || !dir.canWrite()) {
+                continue;
+            }
+            String path = mediaDirs[i].getAbsolutePath();
+            folders.add(path);
+            if(dataFolderPath.equals(path)) {
+                selectedIndex = i;
+            }
+            int index = path.indexOf("Android");
+            String choice;
+            if(index >= 0) {
+                choice = path.substring(0, index);
+            } else {
+                choice = path;
+            }
+            long bytes = StorageUtils.getFreeSpaceAvailable(path);
+            String freeSpace = String.format(context.getString(R.string.free_space_label),
+                    Converter.byteToString(bytes));
+            choices.add(Html.fromHtml("<html><small>" + choice
+                    + " [" + freeSpace + "]" + "</small></html>"));
+        }
+        if(choices.size() == 0) {
+            new MaterialDialog.Builder(ui.getActivity())
+                    .title(R.string.error_label)
+                    .content(R.string.external_storage_error_msg)
+                    .neutralText(android.R.string.ok)
+                    .show();
+            return;
+        }
+        MaterialDialog dialog = new MaterialDialog.Builder(ui.getActivity())
+                .title(R.string.choose_data_directory)
+                .content(R.string.choose_data_directory_message)
+                .items(choices.toArray(new CharSequence[choices.size()]))
+                .itemsCallbackSingleChoice(selectedIndex, (dialog1, itemView, which, text) -> {
+                    String folder = folders.get(which);
+                    Log.d(TAG, "data folder: " + folder);
+                    UserPreferences.setDataFolder(folder);
+                    setDataFolderText();
+                    return true;
+                })
+                .negativeText(R.string.cancel_label)
+                .cancelable(true)
+                .build();
+        dialog.show();
+    }
+
+    // UPDATE TIME/INTERVAL DIALOG
+
+    private void showUpdateIntervalTimePreferencesDialog() {
+        final Context context = ui.getActivity();
+
+        MaterialDialog.Builder builder = new MaterialDialog.Builder(context);
+        builder.title(R.string.pref_autoUpdateIntervallOrTime_title);
+        builder.content(R.string.pref_autoUpdateIntervallOrTime_message);
+        builder.positiveText(R.string.pref_autoUpdateIntervallOrTime_Interval);
+        builder.negativeText(R.string.pref_autoUpdateIntervallOrTime_TimeOfDay);
+        builder.neutralText(R.string.pref_autoUpdateIntervallOrTime_Disable);
+        builder.onPositive((dialog, which) -> {
+            AlertDialog.Builder builder1 = new AlertDialog.Builder(context);
+            builder1.setTitle(context.getString(R.string.pref_autoUpdateIntervallOrTime_Interval));
+            final String[] values = context.getResources().getStringArray(R.array.update_intervall_values);
+            final String[] entries = getUpdateIntervalEntries(values);
+            long currInterval = UserPreferences.getUpdateInterval();
+            int checkedItem = -1;
+            if(currInterval > 0) {
+                String currIntervalStr = String.valueOf(TimeUnit.MILLISECONDS.toHours(currInterval));
+                checkedItem = ArrayUtils.indexOf(values, currIntervalStr);
+            }
+            builder1.setSingleChoiceItems(entries, checkedItem, (dialog1, which1) -> {
+                int hours = Integer.parseInt(values[which1]);
+                UserPreferences.setUpdateInterval(hours);
+                dialog1.dismiss();
+                setUpdateIntervalText();
+            });
+            builder1.setNegativeButton(context.getString(R.string.cancel_label), null);
+            builder1.show();
+        });
+        builder.onNegative((dialog, which) -> {
+            int hourOfDay = 7, minute = 0;
+            int[] updateTime = UserPreferences.getUpdateTimeOfDay();
+            if (updateTime.length == 2) {
+                hourOfDay = updateTime[0];
+                minute = updateTime[1];
+            }
+            TimePickerDialog timePickerDialog = new TimePickerDialog(context,
+                    (view, selectedHourOfDay, selectedMinute) -> {
+                        if (view.getTag() == null) { // onTimeSet() may get called twice!
+                            view.setTag("TAGGED");
+                            UserPreferences.setUpdateTimeOfDay(selectedHourOfDay, selectedMinute);
+                            setUpdateIntervalText();
+                        }
+                    }, hourOfDay, minute, DateFormat.is24HourFormat(context));
+            timePickerDialog.setTitle(context.getString(R.string.pref_autoUpdateIntervallOrTime_TimeOfDay));
+            timePickerDialog.show();
+        });
+        builder.onNeutral((dialog, which) -> {
+            UserPreferences.setUpdateInterval(0);
+            setUpdateIntervalText();
+        });
+        builder.show();
+    }
+
+
+    public interface PreferenceUI {
+
+        /**
+         * Finds a preference based on its key.
+         */
+        Preference findPreference(CharSequence key);
+
+        Activity getActivity();
+    }
+}