Add About screen

app/src/main/AndroidManifest.xml

@@ -380,6 +380,13 @@
             android:parentActivityName=".activities.ControlCenterv2"
             android:screenOrientation="portrait"
             android:windowSoftInputMode="stateHidden" />
+        <activity
+            android:name=".activities.AboutActivity"
+            android:label="@string/about_activity_title"
+            android:parentActivityName=".activities.ControlCenterv2"
+            android:screenOrientation="portrait"
+            android:windowSoftInputMode="stateHidden" />
+
         <activity
             android:name=".activities.DbManagementActivity"
             android:label="@string/title_activity_db_management"

app/src/main/java/nodomain/freeyourgadget/gadgetbridge/activities/AboutActivity.java

@@ -0,0 +1,58 @@
+/*  Copyright (C) 2015-2020 abettenburg, Andreas Shimokawa, Carsten Pfeiffer,
+    Daniele Gobbetti, Lem Dulfo
+
+    This file is part of Gadgetbridge.
+
+    Gadgetbridge is free software: you can redistribute it and/or modify
+    it under the terms of the GNU Affero General Public License as published
+    by the Free Software Foundation, either version 3 of the License, or
+    (at your option) any later version.
+
+    Gadgetbridge 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 Affero General Public License for more details.
+
+    You should have received a copy of the GNU Affero General Public License
+    along with this program.  If not, see <http://www.gnu.org/licenses/>. */
+package nodomain.freeyourgadget.gadgetbridge.activities;
+
+import android.os.Bundle;
+import android.text.method.LinkMovementMethod;
+import android.view.Menu;
+import android.view.MenuInflater;
+import android.view.MenuItem;
+import android.widget.TextView;
+
+import androidx.appcompat.widget.SearchView;
+import androidx.core.app.NavUtils;
+import androidx.recyclerview.widget.LinearLayoutManager;
+import androidx.recyclerview.widget.RecyclerView;
+
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+import nodomain.freeyourgadget.gadgetbridge.R;
+
+
+
+public class AboutActivity extends AbstractGBActivity {
+    private static final Logger LOG = LoggerFactory.getLogger(AboutActivity.class);
+
+
+
+    @Override
+    protected void onCreate(Bundle savedInstanceState) {
+        super.onCreate(savedInstanceState);
+        setContentView(R.layout.activity_about);
+        TextView link1 = (TextView) findViewById(R.id.about4);
+        link1.setMovementMethod(LinkMovementMethod.getInstance());
+        TextView link2 = (TextView) findViewById(R.id.about5);
+        link2.setMovementMethod(LinkMovementMethod.getInstance());
+        TextView link3 = (TextView) findViewById(R.id.about6);
+        link3.setMovementMethod(LinkMovementMethod.getInstance());
+
+    }
+
+
+}

app/src/main/java/nodomain/freeyourgadget/gadgetbridge/activities/ControlCenterv2.java

@@ -297,6 +297,10 @@ public class ControlCenterv2 extends AppCompatActivity
                     GB.toast(getBaseContext(), "Error showing Changelog", Toast.LENGTH_LONG, GB.ERROR);
                 }
                 return true;
+            case R.id.about:
+                Intent aboutIntent = new Intent(this, AboutActivity.class);
+                startActivity(aboutIntent);
+                return true;
         }
 
         return true;

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

@@ -0,0 +1,94 @@
+<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:tools="http://schemas.android.com/tools"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent"
+    android:paddingLeft="@dimen/activity_horizontal_margin"
+    tools:context="nodomain.freeyourgadget.gadgetbridge.activities.AboutActivity">
+
+    <ScrollView
+        android:layout_width="match_parent"
+        android:layout_height="match_parent">
+
+        <LinearLayout
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"
+            android:orientation="vertical">
+
+            <TextView
+                android:id="@+id/about1"
+                android:layout_width="match_parent"
+                android:layout_height="wrap_content"
+                android:text="Gadgetbridge"
+                android:textAppearance="@style/TextAppearance.AppCompat.Large"
+                android:textColor="@color/accent" />
+
+            <TextView
+                android:id="@+id/about2"
+                android:layout_width="match_parent"
+                android:layout_height="wrap_content"
+                android:text="@string/about_description" />
+
+            <TextView
+                android:id="@+id/about3"
+                android:layout_width="match_parent"
+                android:layout_height="wrap_content"
+                android:text="Links"
+                android:textAppearance="@style/TextAppearance.AppCompat.Large"
+                android:textColor="@color/accent" />
+
+            <TextView
+                android:id="@+id/about4"
+                android:layout_width="match_parent"
+                android:layout_height="wrap_content"
+                android:text="@string/homepage_url" />
+
+            <TextView
+                android:id="@+id/about5"
+                android:layout_width="match_parent"
+                android:layout_height="wrap_content"
+                android:text="@string/codeberg_url" />
+
+            <TextView
+                android:id="@+id/about6"
+                android:layout_width="match_parent"
+                android:layout_height="wrap_content"
+                android:text="@string/fdroid_url" />
+
+            <TextView
+                android:id="@+id/about7"
+                android:layout_width="match_parent"
+                android:layout_height="wrap_content"
+                android:text="@string/about_contributors"
+                android:textAppearance="@style/TextAppearance.AppCompat.Large"
+                android:textColor="@color/accent" />
+
+            <TextView
+                android:id="@+id/about8"
+                android:layout_width="match_parent"
+                android:layout_height="wrap_content"
+                android:text="@string/about_core_team_title"
+                android:textColor="@color/accent" />
+
+            <TextView
+                android:id="@+id/about9"
+                android:layout_width="match_parent"
+                android:layout_height="wrap_content"
+                android:text="@string/about_core_team_members" />
+
+            <TextView
+                android:id="@+id/about10"
+                android:layout_width="match_parent"
+                android:layout_height="wrap_content"
+                android:text="@string/about_additional_device_support"
+                android:textColor="@color/accent" />
+
+            <TextView
+                android:id="@+id/about11"
+                android:layout_width="match_parent"
+                android:layout_height="wrap_content"
+                android:text="@string/about_additional_contributors" />
+
+        </LinearLayout>
+    </ScrollView>
+
+</RelativeLayout>

app/src/main/res/menu/activity_controlcenterv2_main_drawer.xml

@@ -36,5 +36,10 @@
             android:id="@+id/external_changelog"
             android:title="@string/changelog_full_title"
             android:icon="@drawable/ic_history_black" />
+        <item
+            android:id="@+id/about"
+            android:title="@string/about_title"
+            android:icon="@drawable/gadgetbridge_img" />
+
     </group>
 </menu>

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

@@ -865,6 +865,19 @@
     <string name="pref_qhybrid_title_widget_draw_circles">Draw widget circles</string>
     <string name="pref_qhybrid_save_raw_activity_files">Save raw activity files</string>
     <string name="hr_widget_last_notification">Last notification</string>
+    <string name="homepage_url" translatable="false">Homepage: <a href="https://gadgetbridge.org/">https://gadgetbridge.org/</a></string>
+    <string name="codeberg_url" translatable="false">Code: <a href="https://codeberg.org/Freeyourgadget/Gadgetbridge">https://codeberg.org/Freeyourgadget/Gadgetbridge</a></string>
+    <string name="fdroid_url" translatable="false">F-Droid: <a href="https://f-droid.org/packages/nodomain.freeyourgadget.gadgetbridge/">https://f-droid.org/packages/nodomain.freeyourgadget.gadgetbridge/</a></string>
+
+    <string name="about_title">About</string>
+    <string name="about_activity_title">About Gadgetbridge</string>
+    <string name="about_description">A free and cloudless replacement for your gadget vendors\' closed source Android applications.</string>
+    <string name="about_core_team_title">Core Team (in order of first code contribution)</string>
+    <string name="about_contributors">Contributors</string>
+    <string name="about_core_team_members" translatable="false"> Andreas Shimokawa\n Carsten Pfeiffer\n Daniele Gobbetti</string>
+    <string name="about_additional_device_support">Additional device support</string>
+    <string name="about_additional_contributors" translatable="false"> João Paulo Barraca (HPlus)\n Vitaly Svyastyn (NO.1 F1)\n Sami Alaoui (Teclast H30)\n “ladbsoft” (XWatch)\n Sebastian Kranz (ZeTime)\n Vadim Kaushan (ID115)\n “maxirnilian” (Lenovo Watch 9)\n “ksiwczynski”, “mkusnierz”, “mamutcho” (Lenovo Watch X Plus)\n Andreas Böhler (Casio GB-6900B)\n Jean-François Greffier (Mi Scale 2)\n Johannes Schmitt (BFH-16)\n Lukas Schwichtenberg (Makibes HR3)\n Daniel Dakhno (Fossil Q Hybrid, Fossil Hybrid HR)\n Gordon Williams (Bangle.js)\n Pavel Elagin (JYou Y5)\n Taavi Eomäe (iTag)</string>
+
     <plurals name="widget_alarm_target_hours">
         <item quantity="one">%d hour</item>
         <item quantity="two">%d hours</item>