[MRG] Add reset settings option.

skunkworks_crow/src/main/java/org/odk/share/utilities/FileUtils.java

@@ -1,5 +1,6 @@
 package org.odk.share.utilities;
 
+import java.io.File;
 import java.util.Locale;
 
 public final class FileUtils {
@@ -15,4 +16,30 @@ public static String getFileExtension(String fileName) {
         }
         return fileName.substring(dotIndex + 1).toLowerCase(Locale.ROOT);
     }
+
+    /**
+     * Delete all contents under the path, would not remove the folder.
+     */
+    public static boolean deleteFolderContents(String path) {
+        boolean result = true;
+        File file = new File(path);
+        if (file.exists()) {
+            File[] files = file.listFiles();
+            if (files != null) {
+                for (File f : files) {
+                    result = deleteRecursive(f);
+                }
+            }
+        }
+        return result;
+    }
+
+    private static boolean deleteRecursive(File fileOrDirectory) {
+        if (fileOrDirectory.isDirectory()) {
+            for (File child : fileOrDirectory.listFiles()) {
+                deleteRecursive(child);
+            }
+        }
+        return fileOrDirectory.delete();
+    }
 }

skunkworks_crow/src/main/java/org/odk/share/views/ui/settings/PreferenceKeys.java

@@ -10,6 +10,7 @@ public class PreferenceKeys {
     public static final String KEY_HOTSPOT_PASSWORD = "hotspot_password";
     public static final String KEY_HOTSPOT_PWD_REQUIRE = "hotspot_pwd_require";
     public static final String KEY_ODK_DESTINATION_DIR = "odk_destination_dir";
+    public static final String KEY_RESET_SETTINGS = "reset_settings";
 
     private PreferenceKeys() {
 

skunkworks_crow/src/main/java/org/odk/share/views/ui/settings/SettingsActivity.java

@@ -1,5 +1,7 @@
 package org.odk.share.views.ui.settings;
 
+import android.app.ProgressDialog;
+import android.content.DialogInterface;
 import android.content.SharedPreferences;
 import android.os.Build;
 import android.os.Bundle;
@@ -13,14 +15,17 @@
 import android.view.View;
 import android.view.ViewGroup;
 import android.view.WindowManager;
+import android.widget.CheckBox;
 import android.widget.Toast;
 
+import androidx.appcompat.app.AlertDialog;
+import androidx.appcompat.widget.Toolbar;
+
 import com.google.android.material.textfield.TextInputLayout;
 
 import org.odk.share.R;
-
-import androidx.appcompat.app.AlertDialog;
-import androidx.appcompat.widget.Toolbar;
+import org.odk.share.application.Share;
+import org.odk.share.utilities.FileUtils;
 
 
 /**
@@ -31,9 +36,11 @@ public class SettingsActivity extends PreferenceActivity {
 
     EditTextPreference hotspotNamePreference;
     Preference hotspotPasswordPreference;
+    Preference resetPreference;
     CheckBoxPreference passwordRequirePreference;
     EditTextPreference odkDestinationDirPreference;
     private SharedPreferences prefs;
+    private ProgressDialog progressDialog;
 
     @Override
     protected void onCreate(Bundle savedInstanceState) {
@@ -56,6 +63,7 @@ public boolean onOptionsItemSelected(MenuItem item) {
     }
 
     private void addPreferences() {
+        resetPreference = findPreference(PreferenceKeys.KEY_RESET_SETTINGS);
         hotspotNamePreference = (EditTextPreference) findPreference(PreferenceKeys.KEY_HOTSPOT_NAME);
         hotspotPasswordPreference = findPreference(PreferenceKeys.KEY_HOTSPOT_PASSWORD);
         passwordRequirePreference = (CheckBoxPreference) findPreference(PreferenceKeys.KEY_HOTSPOT_PWD_REQUIRE);
@@ -77,6 +85,7 @@ private void addPreferences() {
         passwordRequirePreference.setOnPreferenceChangeListener(preferenceChangeListener());
         odkDestinationDirPreference.setOnPreferenceChangeListener(preferenceChangeListener());
 
+        resetPreference.setOnPreferenceClickListener(preferenceClickListener());
         hotspotPasswordPreference.setOnPreferenceClickListener(preferenceClickListener());
     }
 
@@ -86,6 +95,9 @@ private Preference.OnPreferenceClickListener preferenceClickListener() {
                 case PreferenceKeys.KEY_HOTSPOT_PASSWORD:
                     showPasswordDialog();
                     break;
+                case PreferenceKeys.KEY_RESET_SETTINGS:
+                    resetApplication();
+                    break;
             }
             return false;
         };
@@ -162,4 +174,86 @@ private void showPasswordDialog() {
         alertDialog.setCancelable(true);
         alertDialog.getWindow().setSoftInputMode(WindowManager.LayoutParams.SOFT_INPUT_STATE_ALWAYS_VISIBLE);
     }
+
+    /**
+     * Reset the application settings and the database.
+     */
+    private void resetApplication() {
+        View checkBoxView = View.inflate(this, R.layout.pref_reset_dialog, null);
+        CheckBox cbResetPref = checkBoxView.findViewById(R.id.cb_reset_pref);
+        CheckBox cbResetData = checkBoxView.findViewById(R.id.cb_clear_db);
+
+        AlertDialog.Builder builder = new AlertDialog.Builder(this);
+        AlertDialog resetDialog = builder.setTitle(getString(R.string.title_reset_settings))
+                .setView(checkBoxView)
+                .setCancelable(false)
+                .setPositiveButton(getString(R.string.ok), (DialogInterface dialog, int which) -> {
+                    progressDialog = new ProgressDialog(this);
+                    progressDialog.setTitle(getString(R.string.resetting));
+                    progressDialog.setMessage(getString(R.string.resetting_msg));
+                    progressDialog.setIndeterminate(true);
+                    progressDialog.setCancelable(false);
+                    progressDialog.show();
+                    dialog.dismiss();
+
+                    if (!cbResetData.isChecked() && !cbResetPref.isChecked()) {
+                        progressDialog.dismiss();
+                        Toast.makeText(this, getString(R.string.reset_select_nothing), Toast.LENGTH_LONG).show();
+                    } else {
+                        startRest(cbResetPref, cbResetData);
+                    }
+                })
+                .setNegativeButton(getString(R.string.cancel), (DialogInterface dialog, int which) -> {
+                    dialog.dismiss();
+                })
+                .create();
+        resetDialog.show();
+    }
+
+    /**
+     * Start resetting the application and presenting the reset result in an {@link AlertDialog}.
+     */
+    private void startRest(CheckBox cbResetPref, CheckBox cbResetData) {
+        StringBuilder stringBuilder = new StringBuilder();
+        if (cbResetData.isChecked()) {
+            stringBuilder.append(getString(R.string.reset_result_data,
+                    resetData() ? getString(R.string.reset_success) : getString(R.string.reset_failed)));
+        }
+
+        if (cbResetPref.isChecked()) {
+            stringBuilder.append(getString(R.string.reset_result_pref,
+                    resetPreference() ? getString(R.string.reset_success) : getString(R.string.reset_failed)));
+        }
+
+        progressDialog.dismiss();
+        new AlertDialog.Builder(this)
+                .setTitle(getString(R.string.reset_result))
+                .setMessage(stringBuilder.toString())
+                .setCancelable(false)
+                .setPositiveButton(getString(R.string.ok), (DialogInterface dialog, int which) -> {
+                    dialog.dismiss();
+                    finish();
+                })
+                .create()
+                .show();
+    }
+
+    /**
+     * Reset the preference by resetting the {@link SharedPreferences}.
+     */
+    private boolean resetPreference() {
+        SharedPreferences.Editor editor = prefs.edit();
+        editor.clear();
+        return editor.commit();
+    }
+
+    /**
+     * Removing the cache and database table by deleting the share
+     * folder and create a new one.
+     */
+    private boolean resetData() {
+        boolean result = FileUtils.deleteFolderContents(Share.ODK_ROOT);
+        Share.createODKDirs(this);
+        return result;
+    }
 }

skunkworks_crow/src/main/res/drawable/ic_refresh_black_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:fillColor="#FF000000"
+        android:pathData="M17.65,6.35C16.2,4.9 14.21,4 12,4c-4.42,0 -7.99,3.58 -7.99,8s3.57,8 7.99,8c3.73,0 6.84,-2.55 7.73,-6h-2.08c-0.82,2.33 -3.04,4 -5.65,4 -3.31,0 -6,-2.69 -6,-6s2.69,-6 6,-6c1.66,0 3.14,0.69 4.22,1.78L13,11h7V4l-2.35,2.35z"/>
+</vector>

skunkworks_crow/src/main/res/layout/pref_reset_dialog.xml

@@ -0,0 +1,30 @@
+<FrameLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    style="@style/MatchParentWidth">
+
+    <LinearLayout
+        style="@style/MatchParent"
+        android:orientation="vertical"
+        android:padding="4dp">
+
+        <CheckBox
+            android:id="@+id/cb_reset_pref"
+            style="?android:attr/textAppearanceMedium"
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"
+            android:layout_marginStart="6dp"
+            android:layout_marginEnd="6dp"
+            android:text="@string/reset_pref" />
+
+        <CheckBox
+            android:id="@+id/cb_clear_db"
+            style="?android:attr/textAppearanceMedium"
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"
+            android:layout_marginStart="6dp"
+            android:layout_marginTop="16dp"
+            android:layout_marginEnd="6dp"
+            android:layout_marginBottom="4dp"
+            android:text="@string/reset_database" />
+    </LinearLayout>
+
+</FrameLayout>

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

@@ -131,6 +131,17 @@
     <string name="odk_destination_dir_error">The destination should not be empty</string>
     <string name="location_permission_needed">Location Permission Needed</string>
     <string name="location_settings_dialog">Enable location from the settings.</string>
+    <string name="title_reset_settings">Reset Application</string>
+    <string name="reset_database"> Reset Database</string>
+    <string name="reset_pref"> Rest Preferences</string>
+    <string name="reset_select_nothing">Please select items to reset</string>
+    <string name="resetting">Resetting</string>
+    <string name="resetting_msg">Resetting application, please wait&#8230;</string>
+    <string name="reset_result">Reset Result</string>
+    <string name="reset_result_pref">Reset Preference: %s</string>
+    <string name="reset_result_data">Reset Database: %s \n</string>
+    <string name="reset_success">Success</string>
+    <string name="reset_failed">Failed</string>
 
     <string name="btn_refresh">Refresh</string>
     <string name="method_bluetooth">Bluetooth</string>

skunkworks_crow/src/main/res/xml/preferences_menu.xml

@@ -1,36 +1,43 @@
 <?xml version="1.0" encoding="utf-8"?>
-<PreferenceScreen xmlns:android="http://schemas.android.com/apk/res/android"
-    xmlns:app="http://schemas.android.com/apk/res-auto">
+<PreferenceScreen xmlns:android="http://schemas.android.com/apk/res/android">
+
+    <PreferenceCategory android:title="General Settings">
+        <EditTextPreference
+            android:defaultValue="@string/default_odk_destination_dir"
+            android:icon="@drawable/ic_sd_storage_black_24dp"
+            android:key="odk_destination_dir"
+            android:summary="@string/default_odk_destination_dir"
+            android:title="@string/title_odk_destination_dir" />
+
+        <Preference
+            android:icon="@drawable/ic_refresh_black_24dp"
+            android:key="reset_settings"
+            android:title="@string/title_reset_settings" />
+    </PreferenceCategory>
+
     <PreferenceCategory android:title="Hotspot Settings">
 
         <EditTextPreference
             android:defaultValue="@string/default_hotspot_ssid"
-            android:summary="@string/default_hotspot_ssid"
-            android:title="@string/title_hotspot_ssid"
+            android:icon="@drawable/ic_wifi_tethering_black_24dp"
             android:key="hotspot_name"
-            android:icon="@drawable/ic_wifi_tethering_black_24dp"/>
+            android:summary="@string/default_hotspot_ssid"
+            android:title="@string/title_hotspot_ssid" />
 
         <Preference
             android:defaultValue="@string/default_hotspot_password"
-            android:summary="********"
-            android:title="@string/title_hotspot_password"
-            android:key="hotspot_password"
             android:enabled="false"
-            android:icon="@drawable/ic_vpn_key_black_24dp"/>
+            android:icon="@drawable/ic_vpn_key_black_24dp"
+            android:key="hotspot_password"
+            android:summary="********"
+            android:title="@string/title_hotspot_password" />
 
         <CheckBoxPreference
             android:defaultValue="false"
+            android:icon="@drawable/ic_lock_black_24dp"
             android:key="hotspot_pwd_require"
             android:summary="@string/password_hotspot"
-            android:title="@string/set_password"
-            android:icon="@drawable/ic_lock_black_24dp"/>
-
-        <EditTextPreference
-            android:defaultValue="@string/default_odk_destination_dir"
-            android:summary="@string/default_odk_destination_dir"
-            android:title="@string/title_odk_destination_dir"
-            android:key="odk_destination_dir"
-            android:icon="@drawable/ic_sd_storage_black_24dp"/>
+            android:title="@string/set_password" />
 
     </PreferenceCategory>
 </PreferenceScreen>