Reset aller Techniker ermöglicht

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

@@ -121,6 +121,19 @@ class ProjectActivity : AppCompatActivity() {
         }
 
         emptyCheck()
+
+        if (adminMode) {
+            reset_button.visibility = View.VISIBLE
+            reset_button.setOnClickListener {
+                MaterialDialog(this).show {
+                    message(text = "Möchtest du alle eingetragenen Techniker entfernen?")
+                    positiveButton(text = "Ja") {
+                        databaseReference.child("techniker").removeValue()
+                    }
+                    negativeButton(text = "Abbrechen")
+                }
+            }
+        }
     }
 
     private fun technikerExists(name: String): Boolean {

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

@@ -145,6 +145,18 @@
                     android:layout_gravity="center_vertical"
                     android:gravity="end">
 
+                    <ImageButton
+                        android:id="@+id/reset_button"
+                        style="@style/Widget.AppCompat.Button.Borderless"
+                        android:layout_width="45dp"
+                        android:layout_height="40dp"
+                        android:layout_gravity="end"
+                        android:contentDescription="Add Icon"
+                        android:scaleType="fitEnd"
+                        android:visibility="gone"
+                        android:src="@drawable/_icon_delete"
+                        tools:visibility="visible"/>
+
                     <ImageButton
                         android:id="@+id/add_button"
                         style="@style/Widget.AppCompat.Button.Borderless"