implemented most functionality. notifications cannot be turned off

.idea/dictionaries/naresh.xml

@@ -0,0 +1,9 @@
+<component name="ProjectDictionaryState">
+  <dictionary name="naresh">
+    <words>
+      <w>elektro</w>
+      <w>hsdsans</w>
+      <w>weblog</w>
+    </words>
+  </dictionary>
+</component>

app/build.gradle

@@ -35,16 +35,19 @@ android {
 dependencies {
 
     implementation "org.jetbrains.kotlin:kotlin-stdlib:$kotlin_version"
-    implementation 'androidx.core:core-ktx:1.2.0'
-    implementation 'androidx.appcompat:appcompat:1.1.0'
-    implementation 'com.google.android.material:material:1.1.0'
-    implementation 'androidx.constraintlayout:constraintlayout:1.1.3'
-    implementation 'androidx.lifecycle:lifecycle-livedata-ktx:2.2.0'
-    implementation 'androidx.lifecycle:lifecycle-viewmodel-ktx:2.2.0'
-    testImplementation 'junit:junit:4.+'
-    androidTestImplementation 'androidx.test.ext:junit:1.1.1'
-    androidTestImplementation 'androidx.test.espresso:espresso-core:3.2.0'
+    implementation 'androidx.core:core-ktx:1.3.2'
+    implementation 'androidx.appcompat:appcompat:1.2.0'
+    implementation 'com.google.android.material:material:1.3.0'
+    implementation 'androidx.constraintlayout:constraintlayout:2.0.4'
+    implementation 'androidx.lifecycle:lifecycle-livedata-ktx:2.3.0'
+    implementation 'androidx.lifecycle:lifecycle-viewmodel-ktx:2.3.0'
+    implementation 'androidx.swiperefreshlayout:swiperefreshlayout:1.1.0'
+    testImplementation 'junit:junit:4.13.2'
+    androidTestImplementation 'androidx.test.ext:junit:1.1.2'
+    androidTestImplementation 'androidx.test.espresso:espresso-core:3.3.0'
     implementation 'com.android.volley:volley:1.2.0'
-    implementation "com.squareup.okhttp3:okhttp:4.9.0"
+    implementation "androidx.work:work-runtime-ktx:2.5.0"
+
+
 
 }

app/src/main/AndroidManifest.xml

@@ -1,7 +1,8 @@
 <?xml version="1.0" encoding="utf-8"?>
 <manifest xmlns:android="http://schemas.android.com/apk/res/android"
     package="com.nareshkumarrao.eiweblog">
-    <uses-permission android:name="android.permission.INTERNET"/>
+
+    <uses-permission android:name="android.permission.INTERNET" />
 
     <application
         android:allowBackup="true"
@@ -10,6 +11,14 @@
         android:roundIcon="@mipmap/ic_launcher_round"
         android:supportsRtl="true"
         android:theme="@style/Theme.EIWeblog">
+        <activity
+            android:name=".AboutActivity"
+            android:theme="@style/Theme.EIWeblog.NoActionBar"
+            android:parentActivityName=".MainActivity" />
+        <activity
+            android:name=".NotificationSettingsActivity"
+            android:theme="@style/Theme.EIWeblog.NoActionBar"
+            android:parentActivityName=".MainActivity" />
         <activity
             android:name=".MainActivity"
             android:label="@string/app_name"
@@ -19,9 +28,7 @@
 
                 <category android:name="android.intent.category.LAUNCHER" />
             </intent-filter>
-
         </activity>
-
     </application>
 
 </manifest>

app/src/main/java/com/nareshkumarrao/eiweblog/AboutActivity.kt

@@ -0,0 +1,36 @@
+package com.nareshkumarrao.eiweblog
+
+import android.content.Intent
+import android.net.Uri
+import android.os.Bundle
+import android.view.View
+import androidx.appcompat.app.AppCompatActivity
+import androidx.appcompat.widget.AppCompatButton
+import androidx.appcompat.widget.Toolbar
+
+
+class AboutActivity : AppCompatActivity() {
+    override fun onCreate(savedInstanceState: Bundle?) {
+        super.onCreate(savedInstanceState)
+        setContentView(R.layout.activity_about)
+
+        val aboutToolbar = this.findViewById<Toolbar>(R.id.about_toolbar)
+        setSupportActionBar(aboutToolbar)
+        supportActionBar?.setDisplayHomeAsUpEnabled(true)
+        supportActionBar?.setDisplayShowTitleEnabled(false)
+    }
+
+    fun sendBeer(view: View) {
+        startActivity( Intent(
+                Intent.ACTION_VIEW,
+                Uri.parse("https://paypal.me/naresh97")
+        ))
+    }
+
+    fun githubRepo(view: View){
+        startActivity( Intent(
+                Intent.ACTION_VIEW,
+                Uri.parse("https://github.com/naresh97/ei-weblog-android")
+        ))
+    }
+}

app/src/main/java/com/nareshkumarrao/eiweblog/MainActivity.kt

@@ -1,17 +1,23 @@
 package com.nareshkumarrao.eiweblog
 
+import android.app.NotificationChannel
+import android.app.NotificationManager
+import android.content.Context
+import android.content.Intent
+import android.os.Build
 import android.os.Bundle
-import android.util.Log
 import android.view.Menu
+import android.view.MenuItem
 import android.view.View
 import androidx.appcompat.app.AppCompatActivity
 import androidx.appcompat.widget.Toolbar
 import androidx.viewpager.widget.ViewPager
-import com.android.volley.VolleyLog
+import androidx.work.PeriodicWorkRequestBuilder
+import androidx.work.WorkManager
+import androidx.work.WorkRequest
 import com.google.android.material.tabs.TabLayout
-import com.nareshkumarrao.eiweblog.ui.main.Article
 import com.nareshkumarrao.eiweblog.ui.main.SectionsPagerAdapter
-import okhttp3.OkHttpClient
+import java.util.concurrent.TimeUnit
 
 
 class MainActivity : AppCompatActivity() {
@@ -26,50 +32,32 @@ class MainActivity : AppCompatActivity() {
         val tabs: TabLayout = findViewById(R.id.tabs)
         tabs.setupWithViewPager(viewPager)
 
-        val myToolbar = findViewById<View>(R.id.toolbar) as Toolbar
+        val myToolbar = findViewById<View>(R.id.about_toolbar) as Toolbar
         setSupportActionBar(myToolbar)
 
-        VolleyLog.DEBUG = true
+        Utilities.createNotificationChannel(this)
 
-        /*val queue = Volley.newRequestQueue(this)
-        val url = "https://www.reddit.com"
-        val stringRequest = StringRequest(
-            Request.Method.GET, url,
-            { response ->
-                Log.d("XMLLIST", "got response!")
-                Log.d("XMLLIST", "$response")
-            },
-            { error -> Log.e("XMLLIST", error.toString()) })
-        stringRequest.retryPolicy = DefaultRetryPolicy(
-            DefaultRetryPolicy.DEFAULT_TIMEOUT_MS * 2,
-            DefaultRetryPolicy.DEFAULT_MAX_RETRIES,
-            DefaultRetryPolicy.DEFAULT_BACKOFF_MULT
-        )
-        queue.add(stringRequest)*/
+        val uploadWorkRequest: WorkRequest =
+            PeriodicWorkRequestBuilder<UpdateWorker>(1, TimeUnit.HOURS)
+                .build()
+        WorkManager.getInstance(this).enqueue(uploadWorkRequest)
 
-        val thread = Thread {
-            try {
-                Log.d("XMLLIST", "Starting network request thread.")
-                val client = OkHttpClient()
-                val request = okhttp3.Request.Builder().url("https://google.com/").build()
-                val response = client.newCall(request).execute()
-                Log.d("XMLLIST", response.toString())
-            } catch (e: Exception) {
-                e.printStackTrace()
-            }
-        }
 
-        thread.start()
 
     }
 
-    fun logArticles(articles: List<Article>){
-        Log.i("XMLLIST", articles.toString())
-    }
-
     override fun onCreateOptionsMenu(menu: Menu?): Boolean {
-        //Utilities.weblogXML(baseContext, ::logArticles)
         menuInflater.inflate(R.menu.toolbar_menu, menu);
         return true;
     }
+
+    fun showNotificationSettings(item: MenuItem){
+        val intent = Intent(this, NotificationSettingsActivity::class.java)
+        startActivity(intent)
+    }
+
+    fun showAbout(item: MenuItem){
+        val intent = Intent(this, AboutActivity::class.java)
+        startActivity(intent)
+    }
 }

app/src/main/java/com/nareshkumarrao/eiweblog/NotificationSettingsActivity.kt

@@ -0,0 +1,17 @@
+package com.nareshkumarrao.eiweblog
+
+import androidx.appcompat.app.AppCompatActivity
+import android.os.Bundle
+import androidx.appcompat.widget.Toolbar
+
+class NotificationSettingsActivity : AppCompatActivity() {
+    override fun onCreate(savedInstanceState: Bundle?) {
+        super.onCreate(savedInstanceState)
+        setContentView(R.layout.activity_notification_settings)
+
+        val notificationsToolbar = this.findViewById<Toolbar>(R.id.notification_toolbar)
+        setSupportActionBar(notificationsToolbar)
+        supportActionBar?.setDisplayHomeAsUpEnabled(true)
+        supportActionBar?.setDisplayShowTitleEnabled(false)
+    }
+}

app/src/main/java/com/nareshkumarrao/eiweblog/UpdateWorker.kt

@@ -0,0 +1,36 @@
+package com.nareshkumarrao.eiweblog
+
+import android.content.Context
+import androidx.work.Worker
+import androidx.work.WorkerParameters
+import java.math.BigInteger
+import java.security.MessageDigest
+
+class UpdateWorker(private val context: Context, workerParams: WorkerParameters) : Worker(context, workerParams) {
+    override fun doWork(): Result {
+
+        Utilities.weblogList(context) { articles ->
+            val lastArticle = Utilities.getLatestRelevantArticle(articles)!!
+            val hashString = lastArticle.title + lastArticle.content + lastArticle.date
+            val oldHash = md5(hashString)
+
+            Utilities.fetchWeblogXML(applicationContext){newArticles ->
+                val lastNewArticle = Utilities.getLatestRelevantArticle(newArticles)!!
+                val newHashString = lastNewArticle.title + lastNewArticle.content + lastNewArticle.date
+                val newHash = md5(newHashString)
+
+                if(oldHash != newHash){
+                    Utilities.sendNotification(context, lastNewArticle, newArticles.size)
+                }
+            }
+        }
+
+        return Result.success()
+    }
+
+    private fun md5(input:String): String {
+        val md = MessageDigest.getInstance("MD5")
+        return BigInteger(1, md.digest(input.toByteArray())).toString(16).padStart(32, '0')
+    }
+
+}

app/src/main/java/com/nareshkumarrao/eiweblog/Utilities.kt

@@ -1,35 +1,74 @@
 package com.nareshkumarrao.eiweblog
 
-import android.content.ContentValues
+import android.app.NotificationChannel
+import android.app.NotificationManager
+import android.app.PendingIntent
+import android.content.Intent
 import android.content.Context
+import android.os.Build
 import android.util.Log
 import android.util.Xml
+import androidx.core.app.NotificationCompat
+import androidx.core.app.NotificationManagerCompat
+import androidx.core.text.HtmlCompat
 import com.android.volley.Request
-import com.android.volley.Response
 import com.android.volley.toolbox.StringRequest
 import com.android.volley.toolbox.Volley
 import com.nareshkumarrao.eiweblog.ui.main.Article
 import org.xmlpull.v1.XmlPullParser
 import java.io.StringReader
 
+
 internal object Utilities {
-    fun weblogXML(context: Context, function: (d: List<Article>) -> Unit) {
+
+    fun weblogList(context: Context?, function: (d: List<Article>) -> Unit){
+        val sharedPref = context?.getSharedPreferences(context?.getString(R.string.preference_file_key), Context.MODE_PRIVATE)
+        val weblogResponse = sharedPref?.getString( context?.getString(R.string.weblog_response_key), null)
+        if (weblogResponse == null){
+            fetchWeblogXML(context, function)
+            return
+        }
+
+        val parser: XmlPullParser = Xml.newPullParser()
+        parser.setFeature(XmlPullParser.FEATURE_PROCESS_NAMESPACES, false)
+        parser.setInput(  StringReader(weblogResponse) )
+        parser.nextTag()
+        function(parseXML(parser))
+    }
+
+    fun fetchWeblogXML(context: Context?, function: (d: List<Article>) -> Unit) {
 
         val queue = Volley.newRequestQueue(context)
 
-        val url = "https://www.google.com"
+        val url = context?.getString(R.string.weblog_xml_url)
 
         val stringRequest = StringRequest(Request.Method.GET, url,
                 { response ->
-                    Log.d("XMLLIST", "got response!")
-                    // Display the first 500 characters of the response string.
-                    Log.d("XMLLIST", "$response")
+                    val responseStr = String(response.toByteArray(Charsets.ISO_8859_1), Charsets.UTF_8)
+
+                    val sharedPref = context?.getSharedPreferences(context?.getString(R.string.preference_file_key), Context.MODE_PRIVATE)
+                    if (sharedPref != null) {
+                        with (sharedPref.edit()) {
+                            putString(context?.getString(R.string.weblog_response_key), responseStr)
+                            apply()
+                        }
+                    }
+
+
+
+                    val parser: XmlPullParser = Xml.newPullParser()
+                    parser.setFeature(XmlPullParser.FEATURE_PROCESS_NAMESPACES, false)
+                    //Log.d("XMLLIST", responseStr )
+                    parser.setInput(  StringReader(responseStr) )
+                    parser.nextTag()
+
+                    val articles = parseXML(parser)
+                    function(articles)
+
                 },
                 { error -> Log.e("XMLLIST", error.toString()) })
 
-
         queue.add(stringRequest)
-        Log.e("XMLLIST", "Adding request to queue from: $url")
     }
 
     private fun parseXML(parser: XmlPullParser): List<Article> {
@@ -56,7 +95,7 @@ internal object Utilities {
                 continue
             }
             if (parser.name == "z:row") {
-                articles.add(parseZROW(parser))
+                parseZROW(parser)?.let { articles.add(it) }
             } else {
                 parseSkip(parser)
             }
@@ -64,16 +103,21 @@ internal object Utilities {
         return articles
     }
 
-    private fun parseZROW(parser: XmlPullParser): Article {
+    private fun parseZROW(parser: XmlPullParser): Article? {
         parser.require(XmlPullParser.START_TAG, null, "z:row")
         val title = parser.getAttributeValue(null, "ows_Title")
         val content = parser.getAttributeValue(null, "ows_Body")
         val date = parser.getAttributeValue(null, "ows_Created")
         val author = parser.getAttributeValue(null, "ows_Autor2")
+        val category = parser.getAttributeValue(null, "ows_Kategorie")
         parser.nextTag()
-        parser.require(XmlPullParser.END_TAG, null, "link")
+        parser.require(XmlPullParser.END_TAG, null, "z:row")
+
+        if(title == null || content == null || date == null || author == null || category == null){
+            return null
+        }
 
-        return Article(title, content, date, author)
+        return Article(title, content, date, author, category)
     }
 
     private fun parseSkip(parser: XmlPullParser) {
@@ -88,4 +132,49 @@ internal object Utilities {
             }
         }
     }
+
+    fun sendNotification(context: Context?, article: Article, id:Int) {
+        val intent = Intent(context, MainActivity::class.java).apply {
+            flags = Intent.FLAG_ACTIVITY_NEW_TASK or Intent.FLAG_ACTIVITY_CLEAR_TASK
+        }
+        val pendingIntent: PendingIntent = PendingIntent.getActivity(context, 0, intent, 0)
+
+        var builder = NotificationCompat.Builder(context!!, context.getString(R.string.channel_id))
+            .setSmallIcon(R.drawable.ic_stat_name)
+            .setContentTitle(article.title)
+            .setStyle(NotificationCompat.BigTextStyle()
+                .bigText(HtmlCompat.fromHtml(article.content, HtmlCompat.FROM_HTML_MODE_COMPACT)))
+            .setContentIntent(pendingIntent)
+            .setPriority(NotificationCompat.PRIORITY_DEFAULT)
+            .setAutoCancel(true)
+
+        with(NotificationManagerCompat.from(context)) {
+            // notificationId is a unique int for each notification that you must define
+            notify(id, builder.build())
+        }
+
+    }
+
+    fun createNotificationChannel(context: Context?){
+        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {
+            val name = context?.getString(R.string.channel_name)
+            val descriptionText = context?.getString(R.string.channel_description)
+            val importance = NotificationManager.IMPORTANCE_DEFAULT
+            val channel = NotificationChannel(context?.getString(R.string.channel_id), name, importance).apply {
+                description = descriptionText
+            }
+            val notificationManager: NotificationManager = context?.getSystemService(Context.NOTIFICATION_SERVICE) as NotificationManager
+            notificationManager.createNotificationChannel(channel)
+        }
+    }
+
+    fun getLatestRelevantArticle(articles: List<Article>): Article? {
+        val sortedArticles = articles.sortedByDescending { it.date }
+        for (article in sortedArticles){
+            if( article.category == "Lehre" || article.category == "Prüfung" || article.category == "Sonstiges"){
+                return article
+            }
+        }
+        return null
+    }
 }

app/src/main/java/com/nareshkumarrao/eiweblog/ui/main/ItemArticleAdapter.kt

@@ -1,26 +1,38 @@
 package com.nareshkumarrao.eiweblog.ui.main
 
+import android.os.Build
+import android.text.Html
+import android.text.util.Linkify
 import android.view.LayoutInflater
 import android.view.ViewGroup
 import android.widget.TextView
+import androidx.core.text.HtmlCompat
 import androidx.recyclerview.widget.RecyclerView
 import com.nareshkumarrao.eiweblog.R
+import org.w3c.dom.Text
 
-data class Article(val title: String, val content: String, val date: String, val author: String)
+data class Article(val title: String, val content: String, val date: String, val author: String, val category: String)
 
 class ItemArticleAdapter(private val articles: List<Article>) : RecyclerView.Adapter<ItemArticleAdapter.ViewHolder>() {
     inner class ViewHolder(inflater: LayoutInflater, parent: ViewGroup) : RecyclerView.ViewHolder(inflater.inflate(R.layout.item_article, parent, false)) {
         private var title: TextView? = null
         private var content: TextView? = null
+        private var date: TextView? = null
+        private var author: TextView? = null
 
         init {
             title = itemView.findViewById(R.id.titleText)
             content = itemView.findViewById(R.id.contentText)
+            date = itemView.findViewById(R.id.dateText)
+            author = itemView.findViewById(R.id.authorText)
         }
 
         fun bind(article: Article) {
             title?.text = article.title
-            content?.text = article.content
+            content?.text = HtmlCompat.fromHtml(article.content, HtmlCompat.FROM_HTML_MODE_COMPACT)
+            content?.let { Linkify.addLinks(it, Linkify.WEB_URLS) };
+            author?.text = article.author
+            date?.text = article.date
         }
 
     }

app/src/main/java/com/nareshkumarrao/eiweblog/ui/main/SectionsFragment.kt

@@ -7,11 +7,23 @@ import android.view.ViewGroup
 import androidx.fragment.app.Fragment
 import androidx.recyclerview.widget.LinearLayoutManager
 import androidx.recyclerview.widget.RecyclerView
+import androidx.swiperefreshlayout.widget.SwipeRefreshLayout
 import com.nareshkumarrao.eiweblog.R
+import com.nareshkumarrao.eiweblog.Utilities
+
+class SectionsFragment() : Fragment() {
+
+    private var swipeRefreshLayout: SwipeRefreshLayout? = null
 
-class SectionsFragment : Fragment() {
     override fun onCreateView(inflater: LayoutInflater, container: ViewGroup?, savedInstanceState: Bundle?): View? {
-        return inflater.inflate(R.layout.fragment_sections, container, false)
+        val rootView = inflater.inflate(R.layout.fragment_sections, container, false)
+
+        this.swipeRefreshLayout = rootView.findViewById<SwipeRefreshLayout>(R.id.sectionsSwipeRefresh)
+        this.swipeRefreshLayout?.setOnRefreshListener {
+            Utilities.fetchWeblogXML(this.context, ::updateView)
+        }
+
+        return rootView
     }
 
     override fun onViewCreated(view: View, savedInstanceState: Bundle?) {
@@ -20,12 +32,36 @@ class SectionsFragment : Fragment() {
             layoutManager = LinearLayoutManager(activity)
             adapter = ItemArticleAdapter(listOf())
         }
+        Utilities.weblogList(this.context, ::updateView)
+    }
 
+    companion object {
+        private const val ARG_SECTION_NAME = "section_title"
+
+        @JvmStatic
+        fun newInstance(title: String): SectionsFragment {
+            return SectionsFragment().apply {
+                arguments = Bundle().apply {
+                    putString(ARG_SECTION_NAME, title)
+                }
+            }
+        }
     }
-    fun updateView(get_articles: List<Article>){
+
+    private fun updateView(get_articles: List<Article>){
+        this.swipeRefreshLayout?.isRefreshing=false
+        var articles: MutableList<Article> = mutableListOf()
+        val title = arguments?.getString(ARG_SECTION_NAME) ?: return
+        for (article in get_articles){
+            if(article.category == title){
+                articles.add(article)
+            }
+        }
+        articles.sortByDescending { it.date }
+
         view?.findViewById<RecyclerView>(R.id.sectionsRecylerView)?.apply {
             layoutManager = LinearLayoutManager(activity)
-            adapter = ItemArticleAdapter(get_articles)
+            adapter = ItemArticleAdapter(articles)
         }
     }
 }

app/src/main/java/com/nareshkumarrao/eiweblog/ui/main/SectionsPagerAdapter.kt

@@ -16,7 +16,7 @@ class SectionsPagerAdapter(private val context: Context, fm: FragmentManager)
     : FragmentPagerAdapter(fm) {
 
     override fun getItem(position: Int): Fragment {
-        return SectionsFragment()
+        return SectionsFragment.newInstance( context.resources.getString(TAB_TITLES[position]) )
     }
 
     override fun getPageTitle(position: Int): CharSequence? {

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

@@ -0,0 +1,7 @@
+<?xml version="1.0" encoding="utf-8"?>
+<shape xmlns:android="http://schemas.android.com/apk/res/android"
+    android:shape="rectangle">
+    <gradient android:startColor="@android:color/transparent"
+        android:endColor="#EEEEEEEE"
+        android:angle="90"/>
+</shape>

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

@@ -0,0 +1,116 @@
+<?xml version="1.0" encoding="utf-8"?>
+<androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:app="http://schemas.android.com/apk/res-auto"
+    xmlns:tools="http://schemas.android.com/tools"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent"
+    tools:context=".AboutActivity">
+
+    <androidx.appcompat.widget.Toolbar
+        android:id="@+id/about_toolbar"
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+
+        app:contentInsetStart="0px"
+        app:layout_constraintStart_toStartOf="parent"
+        app:layout_constraintTop_toTopOf="parent">
+
+
+
+        <TextView
+            android:id="@+id/title"
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:fontFamily="@font/hsdsans_elektro"
+            android:minHeight="?actionBarSize"
+            android:padding="@dimen/appbar_padding"
+            android:text="@string/about_title"
+            android:textAppearance="@style/TextAppearance.Widget.AppCompat.Toolbar.Title"
+            android:textColor="@color/black"
+            android:textSize="25sp"
+            android:paddingStart="0px"
+            android:paddingLeft="0px"
+            tools:ignore="RtlSymmetry" />
+
+    </androidx.appcompat.widget.Toolbar>
+
+    <ScrollView
+        android:layout_width="match_parent"
+        android:layout_height="0dp"
+        android:fadeScrollbars="false"
+        app:layout_constraintBottom_toBottomOf="parent"
+        app:layout_constraintEnd_toEndOf="parent"
+        app:layout_constraintStart_toStartOf="parent"
+        app:layout_constraintTop_toBottomOf="@+id/about_toolbar">
+
+        <androidx.constraintlayout.widget.ConstraintLayout
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content">
+
+            <View
+                android:layout_width="match_parent"
+                android:layout_height="5dp"
+                app:layout_constraintTop_toTopOf="parent"
+                android:background="@drawable/toolbar_dropshadow"/>
+
+            <TextView
+                android:id="@+id/textView2"
+                android:layout_width="0dp"
+                android:layout_height="wrap_content"
+                android:layout_marginStart="16dp"
+                android:layout_marginLeft="16dp"
+                android:layout_marginTop="16dp"
+                android:layout_marginEnd="16dp"
+                android:layout_marginRight="16dp"
+                android:text="@string/about_text"
+                android:textColor="@color/black"
+                android:textSize="14sp"
+                app:layout_constraintEnd_toEndOf="parent"
+                app:layout_constraintHorizontal_bias="0.0"
+                app:layout_constraintStart_toStartOf="parent"
+                app:layout_constraintTop_toTopOf="parent" />
+
+            <Button
+                android:id="@+id/button2"
+                android:layout_width="wrap_content"
+                android:layout_height="wrap_content"
+                android:layout_marginTop="20dp"
+                android:layout_marginBottom="16dp"
+                android:background="#FFFFFF"
+                android:onClick="githubRepo"
+                android:text="GitHub Repository"
+                android:textColor="@color/white"
+                app:backgroundTint="@color/black"
+                app:layout_constraintBottom_toBottomOf="parent"
+                app:layout_constraintStart_toStartOf="@+id/textView"
+                app:layout_constraintTop_toBottomOf="@+id/textView" />
+
+            <TextView
+                android:id="@+id/textView"
+                android:layout_width="0dp"
+                android:layout_height="wrap_content"
+                android:layout_marginTop="16dp"
+                android:text="@string/license_info"
+                android:textColor="@color/black"
+                android:textSize="14sp"
+                app:layout_constraintEnd_toEndOf="@+id/textView2"
+                app:layout_constraintHorizontal_bias="0.0"
+                app:layout_constraintStart_toStartOf="@+id/button"
+                app:layout_constraintTop_toBottomOf="@+id/button" />
+
+            <Button
+                android:id="@+id/button"
+                android:layout_width="wrap_content"
+                android:layout_height="wrap_content"
+                android:layout_marginTop="20dp"
+                android:onClick="sendBeer"
+                android:text="@string/send_beer"
+                android:textColor="@color/white"
+                app:backgroundTint="@color/fh_red"
+                app:layout_constraintStart_toStartOf="@+id/textView2"
+                app:layout_constraintTop_toBottomOf="@+id/textView2" />
+
+        </androidx.constraintlayout.widget.ConstraintLayout>
+    </ScrollView>
+
+</androidx.constraintlayout.widget.ConstraintLayout>

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

@@ -14,7 +14,7 @@
         android:theme="@style/Theme.EIWeblog.AppBarOverlay">
 
         <androidx.appcompat.widget.Toolbar
-            android:id="@+id/toolbar"
+            android:id="@+id/about_toolbar"
             app:contentInsetStart="0px"
             android:layout_width="match_parent"
             android:layout_height="wrap_content">

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

@@ -0,0 +1,63 @@
+<?xml version="1.0" encoding="utf-8"?>
+<androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:app="http://schemas.android.com/apk/res-auto"
+    xmlns:tools="http://schemas.android.com/tools"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent"
+    tools:context=".NotificationSettingsActivity">
+
+    <androidx.appcompat.widget.Toolbar
+        android:id="@+id/notification_toolbar"
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+
+        app:contentInsetStart="0px"
+        app:layout_constraintStart_toStartOf="parent"
+        app:layout_constraintTop_toTopOf="parent">
+
+
+
+        <TextView
+            android:id="@+id/title"
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:fontFamily="@font/hsdsans_elektro"
+            android:minHeight="?actionBarSize"
+            android:padding="@dimen/appbar_padding"
+            android:text="@string/notifications_title"
+            android:textAppearance="@style/TextAppearance.Widget.AppCompat.Toolbar.Title"
+            android:textColor="@color/black"
+            android:textSize="25sp"
+            android:paddingStart="0px"
+            android:paddingLeft="0px"
+            tools:ignore="RtlSymmetry" />
+
+    </androidx.appcompat.widget.Toolbar>
+
+    <androidx.appcompat.widget.SwitchCompat
+        android:id="@+id/switch1"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:layout_marginEnd="32dp"
+        android:layout_marginRight="32dp"
+        app:layout_constraintBottom_toBottomOf="@+id/textView4"
+        app:layout_constraintEnd_toEndOf="parent"
+        app:layout_constraintTop_toTopOf="@+id/textView4" />
+
+    <TextView
+        android:id="@+id/textView4"
+        android:layout_width="0dp"
+        android:layout_height="wrap_content"
+        android:layout_marginStart="32dp"
+        android:layout_marginLeft="32dp"
+        android:layout_marginTop="32dp"
+        android:layout_marginEnd="32dp"
+        android:layout_marginRight="32dp"
+        android:text="@string/enable_notifications"
+        android:textColor="@color/black"
+        android:textSize="18sp"
+        app:layout_constraintEnd_toStartOf="@+id/switch1"
+        app:layout_constraintStart_toStartOf="parent"
+        app:layout_constraintTop_toBottomOf="@+id/notification_toolbar" />
+
+</androidx.constraintlayout.widget.ConstraintLayout>

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

@@ -3,8 +3,16 @@
     xmlns:android="http://schemas.android.com/apk/res/android" android:layout_width="match_parent"
     android:layout_height="match_parent">
 
-    <androidx.recyclerview.widget.RecyclerView
-        android:id="@+id/sectionsRecylerView"
-        android:layout_width="match_parent"
-        android:layout_height="match_parent" />
+    <androidx.swiperefreshlayout.widget.SwipeRefreshLayout
+        android:id="@+id/sectionsSwipeRefresh"
+        android:layout_height="match_parent"
+        android:layout_width="match_parent">
+
+        <androidx.recyclerview.widget.RecyclerView
+            android:id="@+id/sectionsRecylerView"
+            android:layout_width="match_parent"
+            android:layout_height="match_parent" />
+
+    </androidx.swiperefreshlayout.widget.SwipeRefreshLayout>
+
 </androidx.constraintlayout.widget.ConstraintLayout>

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

@@ -1,6 +1,12 @@
 <?xml version="1.0" encoding="utf-8"?>
 <menu xmlns:app="http://schemas.android.com/apk/res-auto"
     xmlns:android="http://schemas.android.com/apk/res/android">
-    <item android:title="@string/notifications" app:showAsAction="never"/>
-    <item android:title="@string/about" app:showAsAction="never"/>
+    <item
+        android:onClick="showNotificationSettings"
+        android:title="@string/notifications"
+        app:showAsAction="never" />
+    <item
+        android:onClick="showAbout"
+        android:title="@string/about"
+        app:showAsAction="never" />
 </menu>

app/src/main/res/mipmap-anydpi-v26/ic_launcher.xml

@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
 <adaptive-icon xmlns:android="http://schemas.android.com/apk/res/android">
-    <background android:drawable="@drawable/ic_launcher_background" />
-    <foreground android:drawable="@drawable/ic_launcher_foreground" />
+    <background android:drawable="@color/ic_launcher_background"/>
+    <foreground android:drawable="@mipmap/ic_launcher_foreground"/>
 </adaptive-icon>

app/src/main/res/mipmap-anydpi-v26/ic_launcher_round.xml

@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
 <adaptive-icon xmlns:android="http://schemas.android.com/apk/res/android">
-    <background android:drawable="@drawable/ic_launcher_background" />
-    <foreground android:drawable="@drawable/ic_launcher_foreground" />
+    <background android:drawable="@color/ic_launcher_background"/>
+    <foreground android:drawable="@mipmap/ic_launcher_foreground"/>
 </adaptive-icon>

app/src/main/res/values-night/themes.xml

@@ -1,16 +0,0 @@
-<resources xmlns:tools="http://schemas.android.com/tools">
-    <!-- Base application theme. -->
-    <style name="Theme.EIWeblog" parent="Theme.MaterialComponents.DayNight.DarkActionBar">
-        <!-- Primary brand color. -->
-        <item name="colorPrimary">@color/purple_200</item>
-        <item name="colorPrimaryVariant">@color/purple_700</item>
-        <item name="colorOnPrimary">@color/black</item>
-        <!-- Secondary brand color. -->
-        <item name="colorSecondary">@color/teal_200</item>
-        <item name="colorSecondaryVariant">@color/teal_200</item>
-        <item name="colorOnSecondary">@color/black</item>
-        <!-- Status bar color. -->
-        <item name="android:statusBarColor" tools:targetApi="l">?attr/colorPrimaryVariant</item>
-        <!-- Customize your theme here. -->
-    </style>
-</resources>

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

@@ -0,0 +1,4 @@
+<?xml version="1.0" encoding="utf-8"?>
+<resources>
+    <color name="ic_launcher_background">#FFFFFF</color>
+</resources>

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

@@ -5,8 +5,30 @@
     <string name="tab_sonstiges">Sonstiges</string>
     <string name="hsd_symbol">HSD</string>
     <string name="weblog_xml_url"><![CDATA[
-        https://ei.hs-duesseldorf.de/weblog/_vti_bin/owssvr.dll?Cmd=Display&List=%7B169417ED-6982-4CDA-9CAC-F63FCB1757EF%7D&XMLDATA=TRUE&RowLimit=0&Queue=*
+        https://ei.hs-duesseldorf.de/weblog/_vti_bin/owssvr.dll?Cmd=Display&List=%7B169417ED-6982-4CDA-9CAC-F63FCB1757EF%7D&XMLDATA=TRUE&RowLimit=0&Query=*
     ]]></string>
     <string name="notifications">Benachrichtigungen</string>
     <string name="about">Information</string>
+    <string name="preference_file_key">com.nareshkumarrao.eiweblog.preferences</string>
+    <string name="weblog_response_key">weblog_response</string>
+    <string name="tab_veranstaltungen">Veranstaltungen</string>
+    <string name="about_text">
+        My name is Naresh and I am doing my Master\'s in Automation at the HSD.\n
+        \nI wrote this app because I was unsatisfied with the EI weblog that was always silently being
+        updated. The other option would be to develop enough self-discipline to check it regulary.
+        Yeah no thanks.\n
+        \nI put too many hours of work into this app, and if you like it and found it useful, I would really
+        appreciate it if you bought me a beer, or maybe a tasty döner.
+    </string>
+    <string name="about_title">Information</string>
+    <string name="send_beer">Send me €5 for beer on PayPal</string>
+    <string name="license_info">This project is developed open-source and is to be distributed freely
+        as contained within the terms of the GPLv3 license. More information about the license and the
+        source code of this project can be found on its GitHub repository.
+    </string>
+    <string name="channel_name">EI Weblog Notifications</string>
+    <string name="channel_description">Latest updates from the EI Weblog</string>
+    <string name="channel_id">com.nareshkumarrao.eiweblog.update</string>
+    <string name="notifications_title">Benachrichtigungen</string>
+    <string name="enable_notifications">Notify me when new updates are posted to the weblog</string>
 </resources>

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

@@ -1,6 +1,6 @@
 <resources xmlns:tools="http://schemas.android.com/tools">
     <!-- Base application theme. -->
-    <style name="Theme.EIWeblog" parent="Theme.MaterialComponents.DayNight.DarkActionBar">
+    <style name="Theme.EIWeblog" parent="Theme.MaterialComponents.Light.DarkActionBar">
         <!-- Primary brand color. -->
         <item name="colorPrimary">@color/purple_500</item>
         <item name="colorPrimaryVariant">@color/purple_700</item>
@@ -12,11 +12,14 @@
         <!-- Status bar color. -->
         <item name="android:statusBarColor" tools:targetApi="l">?attr/colorPrimaryVariant</item>
         <!-- Customize your theme here. -->
+        <item name="android:forceDarkAllowed" tools:targetApi="q">false</item>
     </style>
 
     <style name="Theme.EIWeblog.NoActionBar">
         <item name="windowActionBar">false</item>
         <item name="windowNoTitle">true</item>
+        <item name="android:forceDarkAllowed" tools:targetApi="q">false</item>
+
     </style>
 
     <style name="Theme.EIWeblog.AppBarOverlay" parent="ThemeOverlay.AppCompat.Light" />

images/launcher.svg

@@ -0,0 +1,82 @@
+<?xml version="1.0" encoding="UTF-8" standalone="no"?>
+<svg
+   xmlns:dc="http://purl.org/dc/elements/1.1/"
+   xmlns:cc="http://creativecommons.org/ns#"
+   xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#"
+   xmlns:svg="http://www.w3.org/2000/svg"
+   xmlns="http://www.w3.org/2000/svg"
+   xmlns:sodipodi="http://sodipodi.sourceforge.net/DTD/sodipodi-0.dtd"
+   xmlns:inkscape="http://www.inkscape.org/namespaces/inkscape"
+   width="186.17953mm"
+   height="186.18573mm"
+   viewBox="0 0 186.17954 186.18573"
+   version="1.1"
+   id="svg8"
+   inkscape:export-filename="/home/naresh/Pictures/EI.png"
+   inkscape:export-xdpi="69.848534"
+   inkscape:export-ydpi="69.848534"
+   inkscape:version="1.0.2 (1.0.2+r75+1)"
+   sodipodi:docname="launcher.svg">
+  <defs
+     id="defs2" />
+  <sodipodi:namedview
+     id="base"
+     pagecolor="#ffffff"
+     bordercolor="#666666"
+     borderopacity="1.0"
+     inkscape:pageopacity="0.0"
+     inkscape:pageshadow="2"
+     inkscape:zoom="0.35"
+     inkscape:cx="271.00222"
+     inkscape:cy="-215.6691"
+     inkscape:document-units="mm"
+     inkscape:current-layer="layer2"
+     inkscape:document-rotation="0"
+     showgrid="false"
+     inkscape:window-width="1920"
+     inkscape:window-height="957"
+     inkscape:window-x="0"
+     inkscape:window-y="27"
+     inkscape:window-maximized="1" />
+  <metadata
+     id="metadata5">
+    <rdf:RDF>
+      <cc:Work
+         rdf:about="">
+        <dc:format>image/svg+xml</dc:format>
+        <dc:type
+           rdf:resource="http://purl.org/dc/dcmitype/StillImage" />
+        <dc:title></dc:title>
+      </cc:Work>
+    </rdf:RDF>
+  </metadata>
+  <g
+     inkscape:groupmode="layer"
+     id="layer2"
+     inkscape:label="Layer 2"
+     transform="translate(-20.145545,-54.038641)">
+    <circle
+       style="fill:none;stroke:#e60028;stroke-width:7.937;stroke-miterlimit:4;stroke-dasharray:190.488, 7.937;stroke-dashoffset:0;stroke-opacity:1"
+       id="path840"
+       cx="113.23561"
+       cy="147.13202"
+       r="89.120903" />
+  </g>
+  <g
+     inkscape:label="Layer 1"
+     inkscape:groupmode="layer"
+     id="layer1"
+     transform="translate(-20.145545,-54.038641)">
+    <text
+       xml:space="preserve"
+       style="font-style:normal;font-weight:normal;font-size:111.943px;line-height:1.25;font-family:sans-serif;fill:#000000;fill-opacity:1;stroke:none;stroke-width:2.79858"
+       x="57.510078"
+       y="188.86467"
+       id="text835"><tspan
+         sodipodi:role="line"
+         id="tspan833"
+         x="57.510078"
+         y="188.86467"
+         style="font-style:normal;font-variant:normal;font-weight:normal;font-stretch:normal;font-family:'HSD Sans';-inkscape-font-specification:'HSD Sans';stroke-width:2.79858">EI</tspan></text>
+  </g>
+</svg>