added about page

android_app/app/src/main/java/com/health/openscale/gui/preferences/AboutPreferences.java

@@ -0,0 +1,35 @@
+/* Copyright (C) 2014  olie.xdev <olie.xdev@googlemail.com>
+*
+*    This program is free software: you can redistribute it and/or modify
+*    it under the terms of the GNU General Public License as published by
+*    the Free Software Foundation, either version 3 of the License, or
+*    (at your option) any later version.
+*
+*    This program is distributed in the hope that it will be useful,
+*    but WITHOUT ANY WARRANTY; without even the implied warranty of
+*    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+*    GNU General Public License for more details.
+*
+*    You should have received a copy of the GNU General Public License
+*    along with this program.  If not, see <http://www.gnu.org/licenses/>
+*/
+package com.health.openscale.gui.preferences;
+
+import android.os.Bundle;
+import android.preference.PreferenceFragment;
+
+import com.health.openscale.BuildConfig;
+import com.health.openscale.R;
+
+public class AboutPreferences extends PreferenceFragment {
+    private static final String KEY_APP_VERSION = "pref_app_version";
+
+    @Override
+    public void onCreate(Bundle savedInstanceState) {
+        super.onCreate(savedInstanceState);
+
+        addPreferencesFromResource(R.xml.about_preferences);
+
+        findPreference(KEY_APP_VERSION).setSummary("v" + BuildConfig.VERSION_NAME);
+    }
+}

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

@@ -149,4 +149,8 @@
     <string name="label_estimate_lbw">Fettfreie Körpermassenschätzung</string>
     <string name="label_estimate_lbw_formula">Fettfreie Körpermassenformel</string>
     <string name="label_lbw">Fettfreie Körpermasse</string>
+    <string name="label_license">Lizenz</string>
+    <string name="label_maintainer">Hauptentwickler</string>
+    <string name="label_website">Webseite</string>
+    <string name="title_about">Info</string>
 </resources>

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

@@ -9,6 +9,7 @@
     <string name="title_users">Users</string>
     <string name="title_data">Data</string>
     <string name="title_measurements">Measurements</string>
+    <string name="title_about">About</string>
 
     <string name="action_settings">Settings</string>
     <string name="action_bluetooth_status">Bluetooth Status</string>
@@ -130,6 +131,10 @@
     <string name="label_category_measurement_database">Measurement database</string>
     <string name="label_category_misc">Miscellaneous</string>
 
+    <string name="label_maintainer">Maintainer</string>
+    <string name="label_website">Website</string>
+    <string name="label_license">License</string>
+
     <string name="label_estimate_water_formula">Body water formula</string>
     <string name="label_estimate_lbw_formula">Body lean body weight formula</string>
     <string name="label_estimate_fat_formula">Body fat formula</string>

android_app/app/src/main/res/xml/about_preferences.xml

@@ -0,0 +1,23 @@
+<?xml version="1.0" encoding="utf-8"?>
+<PreferenceScreen xmlns:android="http://schemas.android.com/apk/res/android">
+    <Preference
+        android:key="pref_app_version"
+        android:persistent="false"
+        android:selectable="false"
+        android:title="openScale" />
+    <Preference
+        android:persistent="false"
+        android:selectable="false"
+        android:title="@string/label_maintainer"
+        android:summary="olie.xdev &lt;olie.xdev@googlemail.com&gt;"/>
+    <Preference
+        android:persistent="false"
+        android:selectable="false"
+        android:title="@string/label_website"
+        android:summary="https://github.com/oliexdev/openScale"/>
+    <Preference
+        android:persistent="false"
+        android:selectable="false"
+        android:title="@string/label_license"
+        android:summary="GPLv3"/>
+</PreferenceScreen>

android_app/app/src/main/res/xml/header_preferences.xml

@@ -24,4 +24,8 @@
         android:fragment="com.health.openscale.gui.preferences.BackupPreferences"
         android:title="@string/label_backup"
         android:icon="@drawable/ic_preferences_backup"/>
+    <header
+        android:fragment="com.health.openscale.gui.preferences.AboutPreferences"
+        android:title="@string/title_about"
+        android:icon="@drawable/ic_preferences_about"/>
 </preference-headers>