add an About section

app/build.gradle

@@ -1,5 +1,6 @@
 apply plugin: 'com.android.application'
 apply plugin: 'kotlin-android'
+apply plugin: 'kotlin-android-extensions'
 
 android {
     compileSdkVersion 23
@@ -42,5 +43,6 @@ buildscript {
 
     dependencies {
         classpath "org.jetbrains.kotlin:kotlin-gradle-plugin:$kotlin_version"
+        classpath "org.jetbrains.kotlin:kotlin-android-extensions:$kotlin_version"
     }
 }

app/src/main/AndroidManifest.xml

@@ -8,12 +8,17 @@
         android:label="@string/app_name"
         android:supportsRtl="true"
         android:theme="@style/AppTheme">
-        <activity android:name=".MainActivity">
+        <activity android:name=".activities.MainActivity">
             <intent-filter>
                 <action android:name="android.intent.action.MAIN"/>
 
                 <category android:name="android.intent.category.LAUNCHER"/>
             </intent-filter>
         </activity>
+
+        <activity
+            android:name=".activities.AboutActivity"
+            android:label="@string/about"
+            android:parentActivityName=".activities.MainActivity"/>
     </application>
 </manifest>

app/src/main/kotlin/com/simplemobiletools/applauncher/MainActivity.kt

@@ -1,12 +0,0 @@
-package com.simplemobiletools.applauncher
-
-import android.os.Bundle
-import android.support.v7.app.AppCompatActivity
-
-class MainActivity : AppCompatActivity() {
-
-    override fun onCreate(savedInstanceState: Bundle?) {
-        super.onCreate(savedInstanceState)
-        setContentView(R.layout.activity_main)
-    }
-}

app/src/main/kotlin/com/simplemobiletools/applauncher/activities/AboutActivity.kt

@@ -0,0 +1,35 @@
+package com.simplemobiletools.applauncher.activities
+
+import android.os.Bundle
+import android.support.v7.app.AppCompatActivity
+import android.text.Html
+import android.text.method.LinkMovementMethod
+import com.simplemobiletools.applauncher.BuildConfig
+import com.simplemobiletools.applauncher.R
+import kotlinx.android.synthetic.main.activity_about.*
+import java.util.*
+
+class AboutActivity : AppCompatActivity() {
+
+    override fun onCreate(savedInstanceState: Bundle?) {
+        super.onCreate(savedInstanceState)
+        setContentView(R.layout.activity_about)
+
+        setupEmail()
+        setupCopyright()
+    }
+
+    private fun setupEmail() {
+        val email = getString(R.string.email)
+        val appName = getString(R.string.app_name)
+        val href = "<a href=\"mailto:$email?subject=$appName\">$email</a>"
+        about_email.text = Html.fromHtml(href)
+        about_email.movementMethod = LinkMovementMethod.getInstance()
+    }
+
+    private fun setupCopyright() {
+        val versionName = BuildConfig.VERSION_NAME
+        val year = Calendar.getInstance().get(Calendar.YEAR)
+        about_copyright.text = String.format(getString(R.string.copyright), versionName, year)
+    }
+}

app/src/main/kotlin/com/simplemobiletools/applauncher/activities/MainActivity.kt

@@ -0,0 +1,31 @@
+package com.simplemobiletools.applauncher.activities
+
+import android.content.Intent
+import android.os.Bundle
+import android.support.v7.app.AppCompatActivity
+import android.view.Menu
+import android.view.MenuItem
+import com.simplemobiletools.applauncher.R
+
+class MainActivity : AppCompatActivity() {
+
+    override fun onCreate(savedInstanceState: Bundle?) {
+        super.onCreate(savedInstanceState)
+        setContentView(R.layout.activity_main)
+    }
+
+    override fun onCreateOptionsMenu(menu: Menu?): Boolean {
+        menuInflater.inflate(R.menu.menu, menu)
+        return true
+    }
+
+    override fun onOptionsItemSelected(item: MenuItem?): Boolean {
+        when (item?.itemId) {
+            R.id.about -> {
+                startActivity(Intent(applicationContext, AboutActivity::class.java))
+                return true
+            }
+        }
+        return super.onOptionsItemSelected(item)
+    }
+}

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

@@ -0,0 +1,95 @@
+<?xml version="1.0" encoding="utf-8"?>
+<ScrollView
+    android:id="@+id/about_scrollview"
+    xmlns:android="http://schemas.android.com/apk/res/android"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent"
+    android:fillViewport="true">
+
+    <RelativeLayout
+        android:id="@+id/about_holder"
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:paddingBottom="@dimen/activity_margin"
+        android:paddingLeft="@dimen/activity_margin"
+        android:paddingTop="@dimen/activity_margin">
+
+        <TextView
+            android:id="@+id/about_website"
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"
+            android:autoLink="web"
+            android:text="@string/website"/>
+
+        <TextView
+            android:id="@+id/about_email_label"
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"
+            android:layout_below="@+id/about_website"
+            android:layout_marginTop="@dimen/activity_margin"
+            android:text="@string/email_label"/>
+
+        <TextView
+            android:id="@+id/about_email"
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"
+            android:layout_below="@+id/about_email_label"
+            android:text="@string/email"/>
+
+        <TextView
+            android:id="@+id/about_rate_us"
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"
+            android:layout_below="@+id/about_email"
+            android:layout_marginTop="@dimen/activity_margin"
+            android:paddingTop="@dimen/activity_margin"
+            android:text="@string/rate_us_underlined"
+            android:textColor="@color/colorPrimary"/>
+
+        <TextView
+            android:id="@+id/about_license"
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"
+            android:layout_below="@+id/about_rate_us"
+            android:layout_marginTop="@dimen/activity_margin"
+            android:paddingBottom="@dimen/activity_margin"
+            android:paddingTop="@dimen/activity_margin"
+            android:text="@string/third_party_licences_underlined"
+            android:textColor="@color/colorPrimary"/>
+
+        <TextView
+            android:id="@+id/about_follow_us"
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"
+            android:layout_below="@+id/about_license"
+            android:paddingBottom="@dimen/social_padding"
+            android:paddingTop="@dimen/activity_margin"
+            android:text="@string/follow_us"/>
+
+        <ImageView
+            android:id="@+id/about_facebook"
+            android:layout_width="@dimen/social_logo"
+            android:layout_height="@dimen/social_logo"
+            android:layout_below="@+id/about_follow_us"
+            android:src="@mipmap/facebook"/>
+
+        <ImageView
+            android:id="@+id/about_gplus"
+            android:layout_width="@dimen/social_logo"
+            android:layout_height="@dimen/social_logo"
+            android:layout_below="@+id/about_follow_us"
+            android:layout_marginLeft="@dimen/social_padding"
+            android:layout_toRightOf="@+id/about_facebook"
+            android:src="@mipmap/gplus"/>
+
+        <TextView
+            android:id="@+id/about_copyright"
+            android:layout_width="match_parent"
+            android:layout_height="match_parent"
+            android:layout_alignParentBottom="true"
+            android:layout_below="@+id/about_gplus"
+            android:gravity="center_horizontal|bottom"
+            android:paddingTop="@dimen/activity_margin"
+            android:text="v1.0\nCopyright © Simple Mobile Tools 2016"/>
+    </RelativeLayout>
+</ScrollView>

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

@@ -0,0 +1,8 @@
+<?xml version="1.0" encoding="utf-8"?>
+<menu xmlns:android="http://schemas.android.com/apk/res/android"
+      xmlns:app="http://schemas.android.com/apk/res-auto">
+    <item
+        android:id="@+id/about"
+        android:title="@string/about"
+        app:showAsAction="never"/>
+</menu>

app/src/main/res/values-sw600dp/dimens.xml

@@ -0,0 +1,4 @@
+<resources>
+    <dimen name="social_padding">12dp</dimen>
+    <dimen name="social_logo">50dp</dimen>
+</resources>

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

@@ -1,3 +1,5 @@
 <resources>
     <dimen name="activity_margin">16dp</dimen>
+    <dimen name="social_padding">8dp</dimen>
+    <dimen name="social_logo">40dp</dimen>
 </resources>

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

@@ -1,3 +1,17 @@
 <resources>
     <string name="app_name">Simple App Launcher</string>
+
+    <!-- About -->
+    <string name="about">About</string>
+    <string name="website">More simple apps and source code at:\nhttp://simplemobiletools.com</string>
+    <string name="email_label">Send your feedback or suggestions to:</string>
+    <string name="email" translatable="false">hello@simplemobiletools.com</string>
+    <string name="third_party_licences_underlined"><u>Third party licences</u></string>
+    <string name="rate_us_underlined"><u>Rate us in the Play Store</u></string>
+    <string name="follow_us">Follow us:</string>
+    <string name="copyright">v %1$s\nCopyright © Simple Mobile Tools %2$d</string>
+
+    <!-- Settings -->
+    <string name="settings">Settings</string>
+    <string name="dark_theme">Dark theme</string>
 </resources>