permanente Aktualisierung der Projekte

app/src/main/java/com/cyb3rko/techniklogger/MainActivity.kt

@@ -23,7 +23,9 @@ import com.cyb3rko.techniklogger.utils.About
 import com.google.firebase.database.*
 import es.dmoral.toasty.Toasty
 import kotlinx.android.synthetic.main.activity_main.*
+import me.ibrahimyilmaz.kiel.adapter.RecyclerViewAdapter
 import me.ibrahimyilmaz.kiel.adapter.RecyclerViewAdapter.Companion.adapterOf
+import me.ibrahimyilmaz.kiel.core.RecyclerViewHolder
 import java.text.SimpleDateFormat
 import java.util.*
 
@@ -45,6 +47,7 @@ class MainActivity : AppCompatActivity() {
         sharedPrefEditor.apply()
 
         databaseReference = FirebaseDatabase.getInstance().reference
+        databaseReference.keepSynced(true)
 
         if (sharedPref.getString("name", "") == "") {
             showNameDialog()
@@ -92,38 +95,6 @@ class MainActivity : AppCompatActivity() {
             )
         }
 
-        val listener = object: ChildEventListener {
-            override fun onChildAdded(snapshot: DataSnapshot, previousChildName: String?) {
-                try {
-                    data.add(
-                        data.size, ProjectViewState.ProjectEntry(
-                            snapshot.key!!,
-                            snapshot.child("name").value.toString(),
-                            snapshot.child("location").value.toString(),
-                            SimpleDateFormat("dd.MM.yyyy", Locale.GERMANY).parse(snapshot.child("date").value.toString())!!,
-                            snapshot.child("duration").value.toString(),
-                        )
-                    )
-                    data.sortBy { it.date }
-                    hideProgress()
-                    recycler_view.scheduleLayoutAnimation()
-                    adapter.notifyDataSetChanged()
-                } catch (exception: Exception) {
-                }
-
-            }
-
-            override fun onChildChanged(snapshot: DataSnapshot, previousChildName: String?) {}
-
-            override fun onChildRemoved(snapshot: DataSnapshot) {}
-
-            override fun onChildMoved(snapshot: DataSnapshot, previousChildName: String?) {}
-
-            override fun onCancelled(error: DatabaseError) {
-                Toast.makeText(applicationContext, "Abruf fehlgeschlagen", Toast.LENGTH_SHORT).show()
-            }
-        }
-
         adapter.submitList(data as List<ProjectViewState>?)
         val linearLayoutManager = LinearLayoutManager(applicationContext)
         linearLayoutManager.reverseLayout = true
@@ -131,7 +102,7 @@ class MainActivity : AppCompatActivity() {
         recycler_view.layoutManager = linearLayoutManager
         recycler_view.adapter = adapter
 
-        databaseReference.child("einsätze").addChildEventListener(listener)
+        databaseReference.child("einsätze").addChildEventListener(loadEntries(adapter))
 
         floatingActionButton.setOnClickListener {
             startActivity(Intent(applicationContext, EinsatzPusher::class.java))
@@ -206,6 +177,39 @@ class MainActivity : AppCompatActivity() {
         }
     }
 
+    private fun loadEntries(adapter: RecyclerViewAdapter<ProjectViewState, RecyclerViewHolder<ProjectViewState>>): ChildEventListener {
+        return object: ChildEventListener {
+            override fun onChildAdded(snapshot: DataSnapshot, previousChildName: String?) {
+                try {
+                    val element = ProjectViewState.ProjectEntry(
+                        snapshot.key!!,
+                        snapshot.child("name").value.toString(),
+                        snapshot.child("location").value.toString(),
+                        SimpleDateFormat("dd.MM.yyyy", Locale.GERMANY).parse(snapshot.child("date").value.toString())!!,
+                        snapshot.child("duration").value.toString(),
+                    )
+                    data.add(data.size, element)
+                    data.sortBy { it.date }
+                    hideProgress()
+                    adapter.notifyDataSetChanged()
+                    recycler_view.scheduleLayoutAnimation()
+                    recycler_view.scrollBy(0, -10000)
+                } catch (exception: Exception) {
+                }
+            }
+
+            override fun onChildChanged(snapshot: DataSnapshot, previousChildName: String?) {}
+
+            override fun onChildRemoved(snapshot: DataSnapshot) {}
+
+            override fun onChildMoved(snapshot: DataSnapshot, previousChildName: String?) {}
+
+            override fun onCancelled(error: DatabaseError) {
+                Toast.makeText(applicationContext, "Abruf fehlgeschlagen", Toast.LENGTH_SHORT).show()
+            }
+        }
+    }
+
     private fun hideProgress() {
         loading_animation.visibility = View.GONE
         loading_animation.cancelAnimation()