Updating yolo

.idea/misc.xml

@@ -1,8 +1,5 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <project version="4">
-  <component name="EntryPointsManager">
-    <entry_points version="2.0" />
-  </component>
   <component name="NullableNotNullManager">
     <option name="myDefaultNullable" value="android.support.annotation.Nullable" />
     <option name="myDefaultNotNull" value="android.support.annotation.NonNull" />
@@ -27,7 +24,7 @@
       </value>
     </option>
   </component>
-  <component name="ProjectRootManager" version="2" languageLevel="JDK_1_7" default="true" assert-keyword="true" jdk-15="true" project-jdk-name="1.8" project-jdk-type="JavaSDK">
+  <component name="ProjectRootManager" version="2" languageLevel="JDK_1_7" default="true" project-jdk-name="1.8" project-jdk-type="JavaSDK">
     <output url="file://$PROJECT_DIR$/build/classes" />
   </component>
   <component name="ProjectType">

.idea/modules.xml

@@ -2,8 +2,8 @@
 <project version="4">
   <component name="ProjectModuleManager">
     <modules>
-      <module fileurl="file://$PROJECT_DIR$/Hangman-game.iml" filepath="$PROJECT_DIR$/Hangman-game.iml" />
       <module fileurl="file://$PROJECT_DIR$/app/app.iml" filepath="$PROJECT_DIR$/app/app.iml" />
+      <module fileurl="file://$PROJECT_DIR$/hangman-game.iml" filepath="$PROJECT_DIR$/hangman-game.iml" />
     </modules>
   </component>
 </project>

app/build.gradle

@@ -1,11 +1,11 @@
 apply plugin: 'com.android.application'
 android {
-    compileSdkVersion 26
+    compileSdkVersion 27
-    buildToolsVersion "26.0.1"
+    buildToolsVersion "27.0.3"
     defaultConfig {
         applicationId "net.DeltaWings.Android.Hangman"
-        minSdkVersion 16
+        minSdkVersion 19
-        targetSdkVersion 26
+        targetSdkVersion 27
         versionCode 1
         versionName "1.0"
         testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner"
@@ -19,15 +19,12 @@ android {
     }
 }
 dependencies {
+    implementation 'com.android.support:support-v4:27.0.2'
     compile fileTree(include: ['*.jar'], dir: 'libs')
-    androidTestCompile('com.android.support.test.espresso:espresso-core:2.2.2', {
+    compile 'com.android.support:appcompat-v7:27.0.2'
-        exclude group: 'com.android.support', module: 'support-annotations'
-    })
-    compile 'com.android.support:appcompat-v7:26.1.0'
     compile 'com.android.support.constraint:constraint-layout:1.0.2'
-    compile 'com.android.support:design:26.1.0'
+    compile 'com.android.support:design:27.0.2'
-    compile 'com.android.support:support-vector-drawable:26.1.0'
+    compile 'com.android.support:support-vector-drawable:27.0.2'
-    testCompile 'junit:junit:4.12'
 }
 
 repositories {

app/src/main/AndroidManifest.xml

@@ -4,25 +4,28 @@
 
     <application
         android:allowBackup="true"
+        android:fullBackupContent="@xml/backup_descriptor"
         android:icon="@mipmap/ic_launcher"
         android:label="@string/app_name"
         android:roundIcon="@mipmap/ic_launcher_round"
         android:supportsRtl="true"
-        android:theme="@style/AppTheme"
+        android:theme="@style/AppTheme">
-        android:fullBackupContent="@xml/backup_descriptor">
         <activity
             android:name=".MainActivity"
-            android:label="@string/app_name"
+            android:label="@string/app_name">
-            android:theme="@style/AppTheme.NoActionBar">
             <intent-filter>
                 <action android:name="android.intent.action.MAIN"/>
 
                 <category android:name="android.intent.category.LAUNCHER"/>
             </intent-filter>
         </activity>
-        <activity android:name=".GameActivity"
+        <activity
-                  android:windowSoftInputMode="stateHidden|adjustResize">
+            android:name=".GameActivity"
-
+            android:windowSoftInputMode="stateHidden|adjustResize">
+        </activity>
+        <activity
+            android:name=".SettingsActivity"
+            android:label="@string/title_activity_settings">
         </activity>
     </application>
 

app/src/main/java/net/DeltaWings/Android/Hangman/AppCompatPreferenceActivity.java

@@ -0,0 +1,109 @@
+package net.DeltaWings.Android.Hangman;
+
+import android.content.res.Configuration;
+import android.os.Bundle;
+import android.preference.PreferenceActivity;
+import android.support.annotation.LayoutRes;
+import android.support.annotation.Nullable;
+import android.support.v7.app.ActionBar;
+import android.support.v7.app.AppCompatDelegate;
+import android.support.v7.widget.Toolbar;
+import android.view.MenuInflater;
+import android.view.View;
+import android.view.ViewGroup;
+
+/**
+ * A {@link android.preference.PreferenceActivity} which implements and proxies the necessary calls
+ * to be used with AppCompat.
+ */
+public abstract class AppCompatPreferenceActivity extends PreferenceActivity {
+
+	private AppCompatDelegate mDelegate;
+
+	@Override
+	protected void onCreate(Bundle savedInstanceState) {
+		getDelegate().installViewFactory();
+		getDelegate().onCreate(savedInstanceState);
+		super.onCreate(savedInstanceState);
+	}
+
+	@Override
+	protected void onPostCreate(Bundle savedInstanceState) {
+		super.onPostCreate(savedInstanceState);
+		getDelegate().onPostCreate(savedInstanceState);
+	}
+
+	public ActionBar getSupportActionBar() {
+		return getDelegate().getSupportActionBar();
+	}
+
+	public void setSupportActionBar(@Nullable Toolbar toolbar) {
+		getDelegate().setSupportActionBar(toolbar);
+	}
+
+	@Override
+	public MenuInflater getMenuInflater() {
+		return getDelegate().getMenuInflater();
+	}
+
+	@Override
+	public void setContentView(@LayoutRes int layoutResID) {
+		getDelegate().setContentView(layoutResID);
+	}
+
+	@Override
+	public void setContentView(View view) {
+		getDelegate().setContentView(view);
+	}
+
+	@Override
+	public void setContentView(View view, ViewGroup.LayoutParams params) {
+		getDelegate().setContentView(view, params);
+	}
+
+	@Override
+	public void addContentView(View view, ViewGroup.LayoutParams params) {
+		getDelegate().addContentView(view, params);
+	}
+
+	@Override
+	protected void onPostResume() {
+		super.onPostResume();
+		getDelegate().onPostResume();
+	}
+
+	@Override
+	protected void onTitleChanged(CharSequence title, int color) {
+		super.onTitleChanged(title, color);
+		getDelegate().setTitle(title);
+	}
+
+	@Override
+	public void onConfigurationChanged(Configuration newConfig) {
+		super.onConfigurationChanged(newConfig);
+		getDelegate().onConfigurationChanged(newConfig);
+	}
+
+	@Override
+	protected void onStop() {
+		super.onStop();
+		getDelegate().onStop();
+	}
+
+	@Override
+	protected void onDestroy() {
+		super.onDestroy();
+		getDelegate().onDestroy();
+	}
+
+	public void invalidateOptionsMenu() {
+		getDelegate().invalidateOptionsMenu();
+	}
+
+	private AppCompatDelegate getDelegate() {
+		if (mDelegate == null) {
+			mDelegate = AppCompatDelegate.create(this, null);
+		}
+		return mDelegate;
+	}
+}

app/src/main/java/net/DeltaWings/Android/Hangman/MainActivity.java

@@ -3,8 +3,9 @@ package net.DeltaWings.Android.Hangman;
 import android.content.Intent;
 import android.os.Bundle;
 import android.support.v7.app.AppCompatActivity;
-import android.support.v7.widget.Toolbar;
 import android.view.Menu;
+import android.view.MenuInflater;
+import android.view.MenuItem;
 import android.view.View;
 import android.widget.Toast;
 
@@ -18,9 +19,7 @@ public class MainActivity extends AppCompatActivity {
 
 	    super.onCreate(savedInstanceState);
 	    setContentView(R.layout.activity_main);
-	    Toolbar toolbar = findViewById(R.id.toolbar);
+
-	    toolbar.setTitle("Hangman");
-	    setSupportActionBar(toolbar);
 
 		//Multiplayer button
 	    findViewById(R.id.multiplayerButton).setOnClickListener(new View.OnClickListener() {
@@ -37,5 +36,29 @@ public class MainActivity extends AppCompatActivity {
 			    Toast.makeText(instance, "WIP", Toast.LENGTH_LONG).show();
 		    }
 	    });
+
     }
+
+	@Override
+	public boolean onCreateOptionsMenu(Menu menu) {
+		MenuInflater inflater = getMenuInflater();
+		inflater.inflate(R.menu.home, menu);
+		// return true so that the menu pop up is opened
+		return true;
+	}
+
+	@Override
+	public boolean onOptionsItemSelected(MenuItem item) {
+		switch (item.getItemId()) {
+			case R.id.navigation_options:
+				// EITHER CALL THE METHOD HERE OR DO THE FUNCTION DIRECTLY
+				startActivity(new Intent(instance, SettingsActivity.class));
+				overridePendingTransition(R.anim.fade_in, R.anim.fade_out);
+
+				return true;
+
+			default:
+				return super.onOptionsItemSelected(item);
+		}
+	}
 }

app/src/main/java/net/DeltaWings/Android/Hangman/SettingsActivity.java

@@ -0,0 +1,254 @@
+package net.DeltaWings.Android.Hangman;
+
+import android.annotation.TargetApi;
+import android.content.Context;
+import android.content.Intent;
+import android.content.res.Configuration;
+import android.media.Ringtone;
+import android.media.RingtoneManager;
+import android.net.Uri;
+import android.os.Build;
+import android.os.Bundle;
+import android.preference.ListPreference;
+import android.preference.Preference;
+import android.preference.PreferenceActivity;
+import android.support.v7.app.ActionBar;
+import android.preference.PreferenceFragment;
+import android.preference.PreferenceManager;
+import android.preference.RingtonePreference;
+import android.text.TextUtils;
+import android.view.MenuItem;
+
+import java.util.List;
+
+/**
+ * A {@link PreferenceActivity} that presents a set of application settings. On
+ * handset devices, settings are presented as a single list. On tablets,
+ * settings are split by category, with category headers shown to the left of
+ * the list of settings.
+ * <p>
+ * See <a href="http://developer.android.com/design/patterns/settings.html">
+ * Android Design: Settings</a> for design guidelines and the <a
+ * href="http://developer.android.com/guide/topics/ui/settings.html">Settings
+ * API Guide</a> for more information on developing a Settings UI.
+ */
+public class SettingsActivity extends AppCompatPreferenceActivity {
+
+	/**
+	 * A preference value change listener that updates the preference's summary
+	 * to reflect its new value.
+	 */
+	private static Preference.OnPreferenceChangeListener sBindPreferenceSummaryToValueListener = new Preference.OnPreferenceChangeListener() {
+		@Override
+		public boolean onPreferenceChange(Preference preference, Object value) {
+			String stringValue = value.toString();
+
+			if (preference instanceof ListPreference) {
+				// For list preferences, look up the correct display value in
+				// the preference's 'entries' list.
+				ListPreference listPreference = (ListPreference) preference;
+				int index = listPreference.findIndexOfValue(stringValue);
+
+				// Set the summary to reflect the new value.
+				preference.setSummary(
+						index >= 0
+								? listPreference.getEntries()[index]
+								: null);
+
+			} else if (preference instanceof RingtonePreference) {
+				// For ringtone preferences, look up the correct display value
+				// using RingtoneManager.
+				if (TextUtils.isEmpty(stringValue)) {
+					// Empty values correspond to 'silent' (no ringtone).
+					preference.setSummary(R.string.pref_ringtone_silent);
+
+				} else {
+					Ringtone ringtone = RingtoneManager.getRingtone(
+							preference.getContext(), Uri.parse(stringValue));
+
+					if (ringtone == null) {
+						// Clear the summary if there was a lookup error.
+						preference.setSummary(null);
+					} else {
+						// Set the summary to reflect the new ringtone display
+						// name.
+						String name = ringtone.getTitle(preference.getContext());
+						preference.setSummary(name);
+					}
+				}
+
+			} else {
+				// For all other preferences, set the summary to the value's
+				// simple string representation.
+				preference.setSummary(stringValue);
+			}
+			return true;
+		}
+	};
+
+	/**
+	 * Helper method to determine if the device has an extra-large screen. For
+	 * example, 10" tablets are extra-large.
+	 */
+	private static boolean isXLargeTablet(Context context) {
+		return (context.getResources().getConfiguration().screenLayout
+				& Configuration.SCREENLAYOUT_SIZE_MASK) >= Configuration.SCREENLAYOUT_SIZE_XLARGE;
+	}
+
+	/**
+	 * Binds a preference's summary to its value. More specifically, when the
+	 * preference's value is changed, its summary (line of text below the
+	 * preference title) is updated to reflect the value. The summary is also
+	 * immediately updated upon calling this method. The exact display format is
+	 * dependent on the type of preference.
+	 *
+	 * @see #sBindPreferenceSummaryToValueListener
+	 */
+	private static void bindPreferenceSummaryToValue(Preference preference) {
+		// Set the listener to watch for value changes.
+		preference.setOnPreferenceChangeListener(sBindPreferenceSummaryToValueListener);
+
+		// Trigger the listener immediately with the preference's
+		// current value.
+		sBindPreferenceSummaryToValueListener.onPreferenceChange(preference,
+				PreferenceManager
+						.getDefaultSharedPreferences(preference.getContext())
+						.getString(preference.getKey(), ""));
+	}
+
+	@Override
+	protected void onCreate(Bundle savedInstanceState) {
+		super.onCreate(savedInstanceState);
+		setupActionBar();
+	}
+
+	/**
+	 * Set up the {@link android.app.ActionBar}, if the API is available.
+	 */
+	private void setupActionBar() {
+		ActionBar actionBar = getSupportActionBar();
+		if (actionBar != null) {
+			// Show the Up button in the action bar.
+			actionBar.setDisplayHomeAsUpEnabled(true);
+		}
+	}
+
+	/**
+	 * {@inheritDoc}
+	 */
+	@Override
+	public boolean onIsMultiPane() {
+		return isXLargeTablet(this);
+	}
+
+	/**
+	 * {@inheritDoc}
+	 */
+	@Override
+	@TargetApi(Build.VERSION_CODES.HONEYCOMB)
+	public void onBuildHeaders(List<Header> target) {
+		loadHeadersFromResource(R.xml.pref_headers, target);
+	}
+
+	/**
+	 * This method stops fragment injection in malicious applications.
+	 * Make sure to deny any unknown fragments here.
+	 */
+	protected boolean isValidFragment(String fragmentName) {
+		return PreferenceFragment.class.getName().equals(fragmentName)
+				|| GeneralPreferenceFragment.class.getName().equals(fragmentName)
+				|| DataSyncPreferenceFragment.class.getName().equals(fragmentName)
+				|| NotificationPreferenceFragment.class.getName().equals(fragmentName);
+	}
+
+	/**
+	 * This fragment shows general preferences only. It is used when the
+	 * activity is showing a two-pane settings UI.
+	 */
+	@TargetApi(Build.VERSION_CODES.HONEYCOMB)
+	public static class GeneralPreferenceFragment extends PreferenceFragment {
+		@Override
+		public void onCreate(Bundle savedInstanceState) {
+			super.onCreate(savedInstanceState);
+			addPreferencesFromResource(R.xml.pref_general);
+			setHasOptionsMenu(true);
+
+			// Bind the summaries of EditText/List/Dialog/Ringtone preferences
+			// to their values. When their values change, their summaries are
+			// updated to reflect the new value, per the Android Design
+			// guidelines.
+			bindPreferenceSummaryToValue(findPreference("example_text"));
+			bindPreferenceSummaryToValue(findPreference("example_list"));
+		}
+
+		@Override
+		public boolean onOptionsItemSelected(MenuItem item) {
+			int id = item.getItemId();
+			if (id == android.R.id.home) {
+				startActivity(new Intent(getActivity(), SettingsActivity.class));
+				return true;
+			}
+			return super.onOptionsItemSelected(item);
+		}
+	}
+
+	/**
+	 * This fragment shows notification preferences only. It is used when the
+	 * activity is showing a two-pane settings UI.
+	 */
+	@TargetApi(Build.VERSION_CODES.HONEYCOMB)
+	public static class NotificationPreferenceFragment extends PreferenceFragment {
+		@Override
+		public void onCreate(Bundle savedInstanceState) {
+			super.onCreate(savedInstanceState);
+			addPreferencesFromResource(R.xml.pref_notification);
+			setHasOptionsMenu(true);
+
+			// Bind the summaries of EditText/List/Dialog/Ringtone preferences
+			// to their values. When their values change, their summaries are
+			// updated to reflect the new value, per the Android Design
+			// guidelines.
+			bindPreferenceSummaryToValue(findPreference("notifications_new_message_ringtone"));
+		}
+
+		@Override
+		public boolean onOptionsItemSelected(MenuItem item) {
+			int id = item.getItemId();
+			if (id == android.R.id.home) {
+				startActivity(new Intent(getActivity(), SettingsActivity.class));
+				return true;
+			}
+			return super.onOptionsItemSelected(item);
+		}
+	}
+
+	/**
+	 * This fragment shows data and sync preferences only. It is used when the
+	 * activity is showing a two-pane settings UI.
+	 */
+	@TargetApi(Build.VERSION_CODES.HONEYCOMB)
+	public static class DataSyncPreferenceFragment extends PreferenceFragment {
+		@Override
+		public void onCreate(Bundle savedInstanceState) {
+			super.onCreate(savedInstanceState);
+			addPreferencesFromResource(R.xml.pref_data_sync);
+			setHasOptionsMenu(true);
+
+			// Bind the summaries of EditText/List/Dialog/Ringtone preferences
+			// to their values. When their values change, their summaries are
+			// updated to reflect the new value, per the Android Design
+			// guidelines.
+			bindPreferenceSummaryToValue(findPreference("sync_frequency"));
+		}
+
+		@Override
+		public boolean onOptionsItemSelected(MenuItem item) {
+			int id = item.getItemId();
+			if (id == android.R.id.home) {
+				startActivity(new Intent(getActivity(), SettingsActivity.class));
+				return true;
+			}
+			return super.onOptionsItemSelected(item);
+		}
+	}
+}

app/src/main/res/anim/fade_in.xml

@@ -3,7 +3,7 @@
     android:fillAfter="true" >
 
     <alpha
-        android:duration="1000"
+        android:duration="250"
         android:fromAlpha="0.0"
         android:interpolator="@android:anim/accelerate_interpolator"
         android:toAlpha="1.0" />

app/src/main/res/anim/fade_out.xml

@@ -3,7 +3,7 @@
     android:fillAfter="true" >
 
     <alpha
-        android:duration="1000"
+        android:duration="250"
         android:fromAlpha="1.0"
         android:interpolator="@android:anim/accelerate_interpolator"
         android:toAlpha="0.0" />

app/src/main/res/drawable/ic_info_black_24dp.xml

@@ -0,0 +1,9 @@
+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+        android:width="24dp"
+        android:height="24dp"
+        android:viewportHeight="24.0"
+        android:viewportWidth="24.0">
+    <path
+        android:fillColor="#FF000000"
+        android:pathData="M12,2C6.48,2 2,6.48 2,12s4.48,10 10,10 10,-4.48 10,-10S17.52,2 12,2zm1,15h-2v-6h2v6zm0,-8h-2V7h2v2z"/>
+</vector>

app/src/main/res/drawable/ic_search_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="M15.5,14h-0.79l-0.28,-0.27C15.41,12.59 16,11.11 16,9.5 16,5.91 13.09,3 9.5,3S3,5.91 3,9.5 5.91,16 9.5,16c1.61,0 3.09,-0.59 4.23,-1.57l0.27,0.28v0.79l5,4.99L20.49,19l-4.99,-5zM9.5,14C7.01,14 5,11.99 5,9.5S7.01,5 9.5,5 14,7.01 14,9.5 11.99,14 9.5,14z"/>
+</vector>

app/src/main/res/drawable/ic_sync_black_24dp.xml

@@ -0,0 +1,9 @@
+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+        android:width="24dp"
+        android:height="24dp"
+        android:viewportHeight="24.0"
+        android:viewportWidth="24.0">
+    <path
+        android:fillColor="#FF000000"
+        android:pathData="M12 4V1L8 5l4 4V6c3.31 0 6 2.69 6 6 0 1.01,-.25 1.97,-.7 2.8l1.46 1.46C19.54 15.03 20 13.57 20 12c0,-4.42,-3.58,-8,-8,-8zm0 14c-3.31 0,-6,-2.69,-6,-6 0,-1.01.25,-1.97.7,-2.8L5.24 7.74C4.46 8.97 4 10.43 4 12c0 4.42 3.58 8 8 8v3l4,-4,-4,-4v3z"/>
+</vector>

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

@@ -9,31 +9,6 @@
     tools:layout_editor_absoluteX="0dp"
     tools:layout_editor_absoluteY="81dp">
 
-    <android.support.design.widget.AppBarLayout
-        android:id="@+id/appBarLayout"
-        android:layout_width="match_parent"
-        android:layout_height="wrap_content"
-        android:theme="@style/AppTheme.AppBarOverlay"
-        app:expanded="false"
-        app:layout_constraintLeft_toLeftOf="parent"
-        app:layout_constraintRight_toRightOf="parent"
-        tools:layout_editor_absoluteY="-2dp">
-
-        <android.support.v7.widget.Toolbar
-            android:id="@+id/toolbar"
-            android:layout_width="0dp"
-            android:layout_height="56dp"
-            android:layout_alignParentTop="true"
-            android:layout_toEndOf="@+id/relativeLayout"
-            android:layout_toRightOf="@+id/relativeLayout"
-            android:layout_weight="1"
-            android:background="?attr/colorPrimary"
-            app:popupTheme="@style/AppTheme.PopupOverlay"
-            tools:layout_editor_absoluteX="8dp"
-            tools:layout_editor_absoluteY="0dp" />
-
-    </android.support.design.widget.AppBarLayout>
-
     <LinearLayout
         android:layout_width="wrap_content"
         android:layout_height="wrap_content"

app/src/main/res/menu/home.xml

@@ -0,0 +1,13 @@
+<?xml version="1.0" encoding="utf-8"?>
+<menu xmlns:android="http://schemas.android.com/apk/res/android">
+
+    <item
+        android:id="@+id/navigation_options"
+        android:icon="@drawable/ic_home_black_24dp"
+        android:title="@string/action_settings"/>
+    <item
+        android:id="@+id/navigation_notifications"
+        android:icon="@drawable/ic_notifications_black_24dp"
+        android:title="@string/about"/>
+
+</menu>

app/src/main/res/menu/navigation.xml

@@ -1,19 +0,0 @@
-<?xml version="1.0" encoding="utf-8"?>
-<menu xmlns:android="http://schemas.android.com/apk/res/android">
-
-    <item
-        android:id="@+id/navigation_home"
-        android:icon="@drawable/ic_home_black_24dp"
-        android:title="@string/title_home" />
-
-    <item
-        android:id="@+id/navigation_dashboard"
-        android:icon="@drawable/ic_dashboard_black_24dp"
-        android:title="@string/title_dashboard" />
-
-    <item
-        android:id="@+id/navigation_notifications"
-        android:icon="@drawable/ic_notifications_black_24dp"
-        android:title="@string/title_notifications" />
-
-</menu>

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

@@ -8,4 +8,78 @@
     <string name="title_dashboard">Dashboard</string>
     <string name="title_notifications">Notifications</string>
     <string name="loading">Loading…</string>
+    <string name="about">About</string>
+    <string name="title_activity_settings">Settings</string>
+
+    <!-- Strings related to Settings -->
+
+    <!-- Example General settings -->
+    <string name="pref_header_general">General</string>
+
+    <string name="pref_title_social_recommendations">Enable social recommendations</string>
+    <string name="pref_description_social_recommendations">Recommendations for people to contact
+        based on your message history
+    </string>
+
+    <string name="pref_title_display_name">Display name</string>
+    <string name="pref_default_display_name">John Smith</string>
+
+    <string name="pref_title_add_friends_to_messages">Add friends to messages</string>
+    <string-array name="pref_example_list_titles">
+        <item>Always</item>
+        <item>When possible</item>
+        <item>Never</item>
+    </string-array>
+    <string-array name="pref_example_list_values">
+        <item>1</item>
+        <item>0</item>
+        <item>-1</item>
+    </string-array>
+
+    <!-- Example settings for Data & Sync -->
+    <string name="pref_header_data_sync">Data &amp; sync</string>
+
+    <string name="pref_title_sync_frequency">Sync frequency</string>
+    <string-array name="pref_sync_frequency_titles">
+        <item>15 minutes</item>
+        <item>30 minutes</item>
+        <item>1 hour</item>
+        <item>3 hours</item>
+        <item>6 hours</item>
+        <item>Never</item>
+    </string-array>
+    <string-array name="pref_sync_frequency_values">
+        <item>15</item>
+        <item>30</item>
+        <item>60</item>
+        <item>180</item>
+        <item>360</item>
+        <item>-1</item>
+    </string-array>
+
+    <string-array name="list_preference_entries">
+        <item>Entry 1</item>
+        <item>Entry 2</item>
+        <item>Entry 3</item>
+    </string-array>
+
+    <string-array name="list_preference_entry_values">
+        <item>1</item>
+        <item>2</item>
+        <item>3</item>
+    </string-array>
+
+    <string-array name="multi_select_list_preference_default_value"/>
+
+    <string name="pref_title_system_sync_settings">System sync settings</string>
+
+    <!-- Example settings for Notifications -->
+    <string name="pref_header_notifications">Notifications</string>
+
+    <string name="pref_title_new_message_notifications">New message notifications</string>
+
+    <string name="pref_title_ringtone">Ringtone</string>
+    <string name="pref_ringtone_silent">Silent</string>
+
+    <string name="pref_title_vibrate">Vibrate</string>
 </resources>

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

@@ -13,8 +13,8 @@
         <item name="windowNoTitle">true</item>
     </style>
 
-    <style name="AppTheme.AppBarOverlay" parent="ThemeOverlay.AppCompat.Dark.ActionBar" />
+    <style name="AppTheme.AppBarOverlay" parent="ThemeOverlay.AppCompat.Dark.ActionBar"/>
 
-    <style name="AppTheme.PopupOverlay" parent="ThemeOverlay.AppCompat.Light" />
+    <style name="AppTheme.PopupOverlay" parent="ThemeOverlay.AppCompat.Light"/>
 
 </resources>

app/src/main/res/xml/pref_data_sync.xml

@@ -0,0 +1,21 @@
+<PreferenceScreen xmlns:android="http://schemas.android.com/apk/res/android">
+
+    <!-- NOTE: Hide buttons to simplify the UI. Users can touch outside the dialog to
+         dismiss it. -->
+    <!-- NOTE: ListPreference's summary should be set to its value by the activity code. -->
+    <ListPreference
+        android:defaultValue="180"
+        android:entries="@array/pref_sync_frequency_titles"
+        android:entryValues="@array/pref_sync_frequency_values"
+        android:key="sync_frequency"
+        android:negativeButtonText="@null"
+        android:positiveButtonText="@null"
+        android:title="@string/pref_title_sync_frequency"/>
+
+    <!-- This preference simply launches an intent when selected. Use this UI sparingly, per
+         design guidelines. -->
+    <Preference android:title="@string/pref_title_system_sync_settings">
+        <intent android:action="android.settings.SYNC_SETTINGS"/>
+    </Preference>
+
+</PreferenceScreen>

app/src/main/res/xml/pref_general.xml

@@ -0,0 +1,33 @@
+<PreferenceScreen xmlns:android="http://schemas.android.com/apk/res/android">
+
+    <SwitchPreference
+        android:defaultValue="true"
+        android:key="example_switch"
+        android:summary="@string/pref_description_social_recommendations"
+        android:title="@string/pref_title_social_recommendations"/>
+
+    <!-- NOTE: EditTextPreference accepts EditText attributes. -->
+    <!-- NOTE: EditTextPreference's summary should be set to its value by the activity code. -->
+    <EditTextPreference
+        android:capitalize="words"
+        android:defaultValue="@string/pref_default_display_name"
+        android:inputType="textCapWords"
+        android:key="example_text"
+        android:maxLines="1"
+        android:selectAllOnFocus="true"
+        android:singleLine="true"
+        android:title="@string/pref_title_display_name"/>
+
+    <!-- NOTE: Hide buttons to simplify the UI. Users can touch outside the dialog to
+         dismiss it. -->
+    <!-- NOTE: ListPreference's summary should be set to its value by the activity code. -->
+    <ListPreference
+        android:defaultValue="-1"
+        android:entries="@array/pref_example_list_titles"
+        android:entryValues="@array/pref_example_list_values"
+        android:key="example_list"
+        android:negativeButtonText="@null"
+        android:positiveButtonText="@null"
+        android:title="@string/pref_title_add_friends_to_messages"/>
+
+</PreferenceScreen>

app/src/main/res/xml/pref_headers.xml

@@ -0,0 +1,20 @@
+<preference-headers xmlns:android="http://schemas.android.com/apk/res/android">
+
+    <!-- These settings headers are only used on tablets. -->
+
+    <header
+        android:fragment="net.DeltaWings.Android.Hangman.SettingsActivity$GeneralPreferenceFragment"
+        android:icon="@drawable/ic_info_black_24dp"
+        android:title="@string/pref_header_general"/>
+
+    <header
+        android:fragment="net.DeltaWings.Android.Hangman.SettingsActivity$NotificationPreferenceFragment"
+        android:icon="@drawable/ic_notifications_black_24dp"
+        android:title="@string/pref_header_notifications"/>
+
+    <header
+        android:fragment="net.DeltaWings.Android.Hangman.SettingsActivity$DataSyncPreferenceFragment"
+        android:icon="@drawable/ic_sync_black_24dp"
+        android:title="@string/pref_header_data_sync"/>
+
+</preference-headers>

app/src/main/res/xml/pref_notification.xml

@@ -0,0 +1,27 @@
+<PreferenceScreen xmlns:android="http://schemas.android.com/apk/res/android">
+
+    <!-- A 'parent' preference, which enables/disables child preferences (below)
+         when checked/unchecked. -->
+    <SwitchPreference
+        android:defaultValue="true"
+        android:key="notifications_new_message"
+        android:title="@string/pref_title_new_message_notifications"/>
+
+    <!-- Allows the user to choose a ringtone in the 'notification' category. -->
+    <!-- NOTE: This preference will be enabled only when the checkbox above is checked. -->
+    <!-- NOTE: RingtonePreference's summary should be set to its value by the activity code. -->
+    <RingtonePreference
+        android:defaultValue="content://settings/system/notification_sound"
+        android:dependency="notifications_new_message"
+        android:key="notifications_new_message_ringtone"
+        android:ringtoneType="notification"
+        android:title="@string/pref_title_ringtone"/>
+
+    <!-- NOTE: This preference will be enabled only when the checkbox above is checked. -->
+    <SwitchPreference
+        android:defaultValue="true"
+        android:dependency="notifications_new_message"
+        android:key="notifications_new_message_vibrate"
+        android:title="@string/pref_title_vibrate"/>
+
+</PreferenceScreen>

build.gradle

@@ -2,11 +2,10 @@
 
 buildscript {
     repositories {
-        jcenter()
         google()
     }
     dependencies {
-        classpath 'com.android.tools.build:gradle:2.3.3'
+        classpath 'com.android.tools.build:gradle:3.0.1'
 
         // NOTE: Do not place your application dependencies here; they belong
         // in the individual module build.gradle files
@@ -15,7 +14,6 @@ buildscript {
 
 allprojects {
     repositories {
-        jcenter()
         google()
     }
 }

gradle.properties

@@ -13,8 +13,8 @@
 # http://www.gradle.org/docs/current/userguide/multi_project_builds.html#sec:decoupled_projects
 # org.gradle.parallel=true
 #Mon Jan 29 13:40:57 CET 2018
-systemProp.https.proxyPort=8080
+#systemProp.https.proxyPort=8080
-systemProp.http.proxyHost=10.16.0.6
+#systemProp.http.proxyHost=10.16.0.6
 org.gradle.jvmargs=-Xmx1536m
-systemProp.https.proxyHost=10.16.0.6
+#systemProp.https.proxyHost=10.16.0.6
-systemProp.http.proxyPort=8080
+#systemProp.http.proxyPort=8080

gradle/wrapper/gradle-wrapper.properties

@@ -1,6 +1,6 @@
-#Mon Jan 22 23:59:18 CET 2018
+#Mon Jan 29 17:12:29 CET 2018
 distributionBase=GRADLE_USER_HOME
 distributionPath=wrapper/dists
 zipStoreBase=GRADLE_USER_HOME
 zipStorePath=wrapper/dists
-distributionUrl=https\://services.gradle.org/distributions/gradle-4.1-all.zip
+distributionUrl=https\://services.gradle.org/distributions/gradle-4.4.1-all.zip