handle local group deleting

app/src/main/kotlin/com/simplemobiletools/contacts/pro/adapters/GroupsAdapter.kt

@@ -13,7 +13,7 @@ import com.simplemobiletools.contacts.pro.R
 import com.simplemobiletools.contacts.pro.activities.SimpleActivity
 import com.simplemobiletools.contacts.pro.dialogs.RenameGroupDialog
 import com.simplemobiletools.contacts.pro.extensions.config
-import com.simplemobiletools.contacts.pro.extensions.dbHelper
+import com.simplemobiletools.contacts.pro.extensions.groupsDB
 import com.simplemobiletools.contacts.pro.helpers.ContactsHelper
 import com.simplemobiletools.contacts.pro.helpers.GROUPS_TAB_MASK
 import com.simplemobiletools.contacts.pro.interfaces.RefreshContactsListener
@@ -92,7 +92,9 @@ class GroupsAdapter(activity: SimpleActivity, var groups: ArrayList<Group>, val
 
     private fun askConfirmDelete() {
         ConfirmationDialog(activity) {
-            deleteGroups()
+            Thread {
+                deleteGroups()
+            }.start()
         }
     }
 
@@ -105,18 +107,20 @@ class GroupsAdapter(activity: SimpleActivity, var groups: ArrayList<Group>, val
         val positions = getSelectedItemPositions()
         groupsToRemove.forEach {
             if (it.isPrivateSecretGroup()) {
-                activity.dbHelper.deleteGroup(it.id!!)
+                activity.groupsDB.deleteGroupId(it.id!!)
             } else {
                 ContactsHelper(activity).deleteGroup(it.id!!)
             }
         }
         groups.removeAll(groupsToRemove)
 
-        if (groups.isEmpty()) {
-            refreshListener?.refreshContacts(GROUPS_TAB_MASK)
-            finishActMode()
-        } else {
-            removeSelectedItems(positions)
+        activity.runOnUiThread {
+            if (groups.isEmpty()) {
+                refreshListener?.refreshContacts(GROUPS_TAB_MASK)
+                finishActMode()
+            } else {
+                removeSelectedItems(positions)
+            }
         }
     }
 

app/src/main/kotlin/com/simplemobiletools/contacts/pro/helpers/DBHelper.kt

@@ -6,7 +6,6 @@ import android.content.Context
 import android.database.sqlite.SQLiteDatabase
 import android.database.sqlite.SQLiteOpenHelper
 import android.graphics.BitmapFactory
-import android.text.TextUtils
 import com.google.gson.Gson
 import com.google.gson.reflect.TypeToken
 import com.simplemobiletools.commons.extensions.getBlobValue
@@ -80,14 +79,6 @@ class DBHelper private constructor(val context: Context) : SQLiteOpenHelper(cont
         db.execSQL("REPLACE INTO sqlite_sequence (name, seq) VALUES ('$GROUPS_TABLE_NAME', $FIRST_GROUP_ID)")
     }
 
-    fun deleteGroup(id: Long) = deleteGroups(arrayOf(id.toString()))
-
-    private fun deleteGroups(ids: Array<String>) {
-        val args = TextUtils.join(", ", ids)
-        val selection = "$GROUPS_TABLE_NAME.$COL_ID IN ($args)"
-        mDb.delete(GROUPS_TABLE_NAME, selection, null)
-    }
-
     fun addContactsToGroup(contacts: ArrayList<Contact>, groupId: Long) {
         contacts.forEach {
             val currentGroupIds = it.groups.map { it.id } as ArrayList<Long>