add Licences section

app/src/main/AndroidManifest.xml

@@ -21,5 +21,10 @@
             android:name=".activities.AboutActivity"
             android:label="@string/about"
             android:parentActivityName=".activities.MainActivity"/>
+
+        <activity
+            android:name=".activities.LicenseActivity"
+            android:label="@string/third_party_licences"
+            android:parentActivityName=".activities.AboutActivity"/>
     </application>
 </manifest>

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

@@ -1,6 +1,7 @@
 package com.simplemobiletools.applauncher.activities
 
 import android.content.ActivityNotFoundException
+import android.content.Intent
 import android.os.Bundle
 import android.support.v7.app.AppCompatActivity
 import android.text.Html
@@ -21,9 +22,10 @@ class AboutActivity : AppCompatActivity() {
         setContentView(R.layout.activity_about)
 
         setupEmail()
-        setupCopyright()
         setupRateUs()
+        setupLicense()
         setupSocial()
+        setupCopyright()
     }
 
     private fun setupEmail() {
@@ -34,12 +36,6 @@ class AboutActivity : AppCompatActivity() {
         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)
-    }
-
     private fun setupRateUs() {
         if (preferences().isFirstRun) {
             about_rate_us.visibility = View.GONE
@@ -50,6 +46,12 @@ class AboutActivity : AppCompatActivity() {
         }
     }
 
+    private fun setupLicense() {
+        about_license.setOnClickListener {
+            startActivity(Intent(applicationContext, LicenseActivity::class.java))
+        }
+    }
+
     private fun setupSocial() {
         about_facebook.setOnClickListener {
             startActivity(viewIntent(getFacebookUrl()))
@@ -61,6 +63,12 @@ class AboutActivity : AppCompatActivity() {
         }
     }
 
+    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)
+    }
+
     private fun getFacebookUrl(): String {
         try {
             packageManager.getPackageInfo("com.facebook.katana", 0)

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

@@ -0,0 +1,19 @@
+package com.simplemobiletools.applauncher.activities
+
+import android.os.Bundle
+import android.support.v7.app.AppCompatActivity
+import com.simplemobiletools.applauncher.R
+import com.simplemobiletools.applauncher.extensions.viewIntent
+import kotlinx.android.synthetic.main.activity_license.*
+
+class LicenseActivity : AppCompatActivity() {
+
+    override fun onCreate(savedInstanceState: Bundle?) {
+        super.onCreate(savedInstanceState)
+        setContentView(R.layout.activity_license)
+
+        license_kotlin_title.setOnClickListener {
+            startActivity(viewIntent(getString(R.string.kotlin_url)))
+        }
+    }
+}

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

@@ -0,0 +1,36 @@
+<?xml version="1.0" encoding="utf-8"?>
+<ScrollView
+    android:id="@+id/license_holder"
+    xmlns:android="http://schemas.android.com/apk/res/android"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent">
+
+    <LinearLayout
+        android:id="@+id/license"
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:orientation="vertical"
+        android:padding="@dimen/activity_margin">
+
+        <TextView
+            android:id="@+id/license_notice"
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:text="@string/notice"/>
+
+        <TextView
+            android:id="@+id/license_kotlin_title"
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"
+            android:paddingTop="@dimen/activity_margin"
+            android:text="@string/kotlin_title"
+            android:textColor="@color/colorPrimary"/>
+
+        <TextView
+            android:id="@+id/license_kotlin_text"
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:text="@string/kotlin_text"/>
+
+    </LinearLayout>
+</ScrollView>

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

@@ -14,4 +14,11 @@
     <!-- Settings -->
     <string name="settings">Settings</string>
     <string name="dark_theme">Dark theme</string>
+
+    <!-- License -->
+    <string name="notice">This app uses the following third party libraries to make my life easier. Thank you.</string>
+    <string name="third_party_licences">Third party licences</string>
+    <string name="kotlin_title"><u>Kotlin (programming language)</u></string>
+    <string name="kotlin_text" translatable="false">Copyright 2010 - 2016 JetBrains s.r.o.\n\nLicensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with the License.You may obtain a copy of the License at\n\nhttp://www.apache.org/licenses/LICENSE-2.0\n\nUnless required by applicable law or agreed to in writing, software distributed under the License is distributed on an "AS IS" BASIS,WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.See the License for the specific language governing permissions and limitations under the License.</string>
+    <string name="kotlin_url" translatable="false">https://github.com/JetBrains/kotlin</string>
 </resources>