Adapter improving for grid view and refactoring

app/src/main/kotlin/com/simplemobiletools/dialer/activities/DialpadActivity.kt

@@ -263,7 +263,7 @@ class DialpadActivity : SimpleActivity() {
 
             if (hasRussianLocale) {
                 var currConvertedName = ""
-                convertedName.toLowerCase().forEach { char ->
+                convertedName.lowercase(Locale.getDefault()).forEach { char ->
                     val convertedChar = russianCharsMap.getOrElse(char) { char }
                     currConvertedName += convertedChar
                 }
@@ -279,13 +279,18 @@ class DialpadActivity : SimpleActivity() {
             try {
                 val name = filtered[position].getNameToDisplay()
                 val character = if (name.isNotEmpty()) name.substring(0, 1) else ""
-                FastScrollItemIndicator.Text(character.toUpperCase(Locale.getDefault()))
+                FastScrollItemIndicator.Text(character.uppercase(Locale.getDefault()))
             } catch (e: Exception) {
                 FastScrollItemIndicator.Text("")
             }
         })
 
-        ContactsAdapter(this, filtered, dialpad_list, null, text) {
+        ContactsAdapter(
+            activity = this,
+            contacts = filtered,
+            recyclerView = dialpad_list,
+            highlightText = text
+        ) {
             val contact = it as Contact
             if (config.showCallConfirmation) {
                 CallConfirmationDialog(this@DialpadActivity, contact.getNameToDisplay()) {
@@ -406,12 +411,14 @@ class DialpadActivity : SimpleActivity() {
                         }, longPressTimeout)
                     }
                 }
+
                 MotionEvent.ACTION_UP, MotionEvent.ACTION_CANCEL -> {
                     stopDialpadTone(char)
                     if (longClickable) {
                         longPressHandler.removeCallbacksAndMessages(null)
                     }
                 }
+
                 MotionEvent.ACTION_MOVE -> {
                     val viewContainsTouchEvent = if (event.rawX.isNaN() || event.rawY.isNaN()) {
                         false

app/src/main/kotlin/com/simplemobiletools/dialer/adapters/ContactsAdapter.kt

@@ -21,10 +21,7 @@ import com.simplemobiletools.commons.adapters.MyRecyclerViewAdapter
 import com.simplemobiletools.commons.dialogs.ConfirmationDialog
 import com.simplemobiletools.commons.dialogs.FeatureLockedDialog
 import com.simplemobiletools.commons.extensions.*
-import com.simplemobiletools.commons.helpers.PERMISSION_CALL_PHONE
-import com.simplemobiletools.commons.helpers.PERMISSION_WRITE_CONTACTS
-import com.simplemobiletools.commons.helpers.SimpleContactsHelper
-import com.simplemobiletools.commons.helpers.isOreoPlus
+import com.simplemobiletools.commons.helpers.*
 import com.simplemobiletools.commons.interfaces.ItemMoveCallback
 import com.simplemobiletools.commons.interfaces.ItemTouchHelperContract
 import com.simplemobiletools.commons.interfaces.StartReorderDragListener
@@ -43,9 +40,10 @@ class ContactsAdapter(
     activity: SimpleActivity,
     var contacts: MutableList<Contact>,
     recyclerView: MyRecyclerView,
-    val refreshItemsListener: RefreshItemsListener? = null,
     highlightText: String = "",
-    val showDeleteButton: Boolean = true,
+    private val refreshItemsListener: RefreshItemsListener? = null,
+    private val viewType: Int = VIEW_TYPE_LIST,
+    private val showDeleteButton: Boolean = true,
     private val enableDrag: Boolean = false,
     itemClick: (Any) -> Unit
 ) : MyRecyclerViewAdapter(activity, recyclerView, itemClick), ItemTouchHelperContract {
@@ -123,7 +121,17 @@ class ContactsAdapter(
         notifyDataSetChanged()
     }
 
-    override fun onCreateViewHolder(parent: ViewGroup, viewType: Int) = createViewHolder(R.layout.item_contact_without_number, parent)
+    override fun onCreateViewHolder(parent: ViewGroup, viewType: Int): ViewHolder {
+        val layout = when (viewType) {
+            VIEW_TYPE_GRID -> R.layout.item_contact_grid
+            else -> R.layout.item_contact_without_number
+        }
+        return createViewHolder(layout, parent)
+    }
+
+    override fun getItemViewType(position: Int): Int {
+        return viewType
+    }
 
     override fun onBindViewHolder(holder: ViewHolder, position: Int) {
         val contact = contacts[position]

app/src/main/kotlin/com/simplemobiletools/dialer/fragments/ContactsFragment.kt

@@ -15,7 +15,7 @@ import com.simplemobiletools.dialer.extensions.launchCreateNewContactIntent
 import com.simplemobiletools.dialer.extensions.startContactDetailsIntent
 import com.simplemobiletools.dialer.interfaces.RefreshItemsListener
 import kotlinx.android.synthetic.main.fragment_letters_layout.view.*
-import java.util.*
+import java.util.Locale
 
 class ContactsFragment(context: Context, attributeSet: AttributeSet) : MyViewPagerFragment(context, attributeSet), RefreshItemsListener {
     private var allContacts = ArrayList<Contact>()
@@ -82,7 +82,7 @@ class ContactsFragment(context: Context, attributeSet: AttributeSet) : MyViewPag
     }
 
     private fun gotContacts(contacts: ArrayList<Contact>) {
-        setupLetterFastscroller(contacts)
+        setupLetterFastScroller(contacts)
         if (contacts.isEmpty()) {
             fragment_placeholder.beVisible()
             fragment_placeholder_2.beVisible()
@@ -94,7 +94,12 @@ class ContactsFragment(context: Context, attributeSet: AttributeSet) : MyViewPag
 
             val currAdapter = fragment_list.adapter
             if (currAdapter == null) {
-                ContactsAdapter(activity as SimpleActivity, contacts, fragment_list, this) {
+                ContactsAdapter(
+                    activity = activity as SimpleActivity,
+                    contacts = contacts,
+                    recyclerView = fragment_list,
+                    refreshItemsListener = this
+                ) {
                     val contact = it as Contact
                     activity?.startContactDetailsIntent(contact)
                 }.apply {
@@ -110,12 +115,12 @@ class ContactsFragment(context: Context, attributeSet: AttributeSet) : MyViewPag
         }
     }
 
-    private fun setupLetterFastscroller(contacts: ArrayList<Contact>) {
+    private fun setupLetterFastScroller(contacts: ArrayList<Contact>) {
         letter_fastscroller.setupWithRecyclerView(fragment_list, { position ->
             try {
                 val name = contacts[position].getNameToDisplay()
                 val character = if (name.isNotEmpty()) name.substring(0, 1) else ""
-                FastScrollItemIndicator.Text(character.toUpperCase(Locale.getDefault()).normalizeString())
+                FastScrollItemIndicator.Text(character.uppercase(Locale.getDefault()).normalizeString())
             } catch (e: Exception) {
                 FastScrollItemIndicator.Text("")
             }
@@ -125,7 +130,7 @@ class ContactsFragment(context: Context, attributeSet: AttributeSet) : MyViewPag
     override fun onSearchClosed() {
         fragment_placeholder.beVisibleIf(allContacts.isEmpty())
         (fragment_list.adapter as? ContactsAdapter)?.updateItems(allContacts)
-        setupLetterFastscroller(allContacts)
+        setupLetterFastScroller(allContacts)
     }
 
     override fun onSearchQueryChanged(text: String) {
@@ -152,8 +157,9 @@ class ContactsFragment(context: Context, attributeSet: AttributeSet) : MyViewPag
 
         fragment_placeholder.beVisibleIf(filtered.isEmpty())
         (fragment_list.adapter as? ContactsAdapter)?.updateItems(filtered, text)
-        setupLetterFastscroller(filtered)
+        setupLetterFastScroller(filtered)
     }
+
     private fun requestReadContactsPermission() {
         activity?.handlePermission(PERMISSION_READ_CONTACTS) {
             if (it) {