remove the deleted launchers from the list

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

@@ -17,7 +17,7 @@ import kotlinx.android.synthetic.main.activity_main.*
 import java.util.*
 import kotlin.comparisons.compareBy
 
-class MainActivity : SimpleActivity(), AddAppDialog.AddLaunchersInterface {
+class MainActivity : SimpleActivity(), AddAppDialog.AddLaunchersInterface, RecyclerAdapter.EditLaunchersInterface {
     lateinit var dbHelper: DbHelper
     lateinit var launchers: ArrayList<AppLauncher>
     lateinit var remainingLaunchers: ArrayList<AppLauncher>
@@ -91,6 +91,14 @@ class MainActivity : SimpleActivity(), AddAppDialog.AddLaunchersInterface {
         setupLaunchers()
     }
 
+    override fun launchersDeleted(indexes: List<Int>) {
+        val reversed = indexes.reversed()
+        for (index in reversed) {
+            launchers.removeAt(index)
+            launchers_holder.adapter.notifyItemRemoved(index)
+        }
+    }
+
     override fun onDestroy() {
         super.onDestroy()
         preferences.isFirstRun = false

app/src/main/kotlin/com/simplemobiletools/applauncher/adapters/RecyclerAdapter.kt

@@ -35,6 +35,8 @@ class RecyclerAdapter(val act: Activity, val launchers: List<AppLauncher>, val i
                         deleteIds.add(launchers[i].id.toString())
                     }
                     DbHelper(act).deleteLaunchers(deleteIds)
+                    actMode?.finish()
+                    (act as EditLaunchersInterface).launchersDeleted(positions)
                     return true
                 }
             }
@@ -113,4 +115,8 @@ class RecyclerAdapter(val act: Activity, val launchers: List<AppLauncher>, val i
             }
         }
     }
+
+    interface EditLaunchersInterface {
+        fun launchersDeleted(indexes: List<Int>)
+    }
 }