add refresh gesture to GradesFragment

app/src/main/java/org/mosad/seil0/projectlaogai/fragments/GradesFragment.kt

@@ -30,7 +30,6 @@ import android.view.ViewGroup
 import android.widget.TextView
 import androidx.core.content.res.ResourcesCompat
 import androidx.fragment.app.Fragment
-import androidx.swiperefreshlayout.widget.SwipeRefreshLayout
 import kotlinx.android.synthetic.main.fragment_grades.*
 import kotlinx.coroutines.*
 import org.mosad.seil0.projectlaogai.R
@@ -49,8 +48,6 @@ import kotlin.system.measureTimeMillis
  */
 class GradesFragment : Fragment() {
 
-    private lateinit var refreshLayoutGrades: SwipeRefreshLayout
-
     private lateinit var parser: QISPOSParser
 
     override fun onCreateView(inflater: LayoutInflater, container: ViewGroup?, savedInstanceState: Bundle?): View? {
@@ -60,9 +57,8 @@ class GradesFragment : Fragment() {
     override fun onViewCreated(view: View, savedInstanceState: Bundle?) {
         super.onViewCreated(view, savedInstanceState)
 
-        refreshLayoutGrades = view.findViewById(R.id.refreshLayout_Grades)
-        refreshLayoutGrades.isEnabled = false // disable swipe
-        refreshLayoutGrades.setProgressBackgroundColorSchemeColor(Preferences.themeSecondary)
+        refreshLayout_Grades.setProgressBackgroundColorSchemeColor(Preferences.themeSecondary)
+        initActions()
 
         parser = QISPOSParser(context!!)// init the parser
 
@@ -74,6 +70,21 @@ class GradesFragment : Fragment() {
         }
     }
 
+    /**
+     * initialize the actions
+     */
+    private fun initActions() = GlobalScope.launch(Dispatchers.Default) {
+        refreshLayout_Grades.setOnRefreshListener {
+            linLayout_Grades.removeAllViews() // clear layout
+            // TODO add loading textView
+
+            GlobalScope.launch(Dispatchers.Default) {
+                CacheController.updateGrades(context!!).join()
+                addGrades()
+            }
+        }
+    }
+
     /**
      * check if the credentials are set, if not show a login dialog
      */
@@ -210,7 +221,7 @@ class GradesFragment : Fragment() {
             }
 
         }
-        println("startup completed in $addGradesTime ms")
+        println("added grades in $addGradesTime ms")
     }
 
 }

app/src/main/java/org/mosad/seil0/projectlaogai/fragments/MensaFragment.kt

@@ -58,7 +58,7 @@ class MensaFragment : Fragment() {
 
         refreshLayout_Mensa.setProgressBackgroundColorSchemeColor(Preferences.themeSecondary)
 
-        refreshAction() // init actions
+        initActions() // init actions
 
         GlobalScope.launch(Dispatchers.Default) {
             val dayCurrent =  if(NotRetardedCalendar.getDayOfWeekIndex() == 6) 0 else NotRetardedCalendar.getDayOfWeekIndex()
@@ -113,15 +113,12 @@ class MensaFragment : Fragment() {
     }
 
     /**
-     * initialize the refresh action
+     * initialize the actions
      */
-    private fun refreshAction() = GlobalScope.launch(Dispatchers.Default) {
-        withContext(Dispatchers.Main) {
-            // set the refresh listener
-            refreshLayout_Mensa.setOnRefreshListener {
-                updateMensaScreen()
-            }
-
+    private fun initActions() {
+        // set the refresh listener
+        refreshLayout_Mensa.setOnRefreshListener {
+            updateMensaScreen()
         }
     }
 

app/src/main/java/org/mosad/seil0/projectlaogai/fragments/TimeTableFragment.kt

@@ -75,7 +75,7 @@ class TimeTableFragment : Fragment() {
     /**
      * initialize the actions
      */
-    private fun initActions() = GlobalScope.launch(Dispatchers.Main) {
+    private fun initActions() {
 
         refreshLayout_Timetable.setOnRefreshListener {
             runBlocking { TimetableController.update(context!!).joinAll() }

app/src/main/res/layouts/fragments/layout/fragment_grades.xml

@@ -3,13 +3,13 @@
     xmlns:tools="http://schemas.android.com/tools"
     android:layout_width="match_parent"
     android:layout_height="match_parent"
+    android:background="?themePrimary"
     tools:context=".fragments.GradesFragment">
 
     <androidx.swiperefreshlayout.widget.SwipeRefreshLayout
         android:id="@+id/refreshLayout_Grades"
         android:layout_width="match_parent"
-        android:layout_height="match_parent"
-        android:background="?themePrimary">
+        android:layout_height="match_parent">
 
         <ScrollView
             android:id="@+id/scrollView_Grades"