start adding Search at the Select Contact screen

app/src/main/AndroidManifest.xml

@@ -144,8 +144,7 @@
 
         <activity
             android:name=".activities.InsertOrEditContactActivity"
-            android:label="@string/select_contact"
+            android:label="@string/select_contact">
-            android:parentActivityName=".activities.MainActivity">
 
             <meta-data
                 android:name="android.app.default_searchable"
@@ -175,6 +174,14 @@
             android:name=".activities.SelectContactActivity"
             android:label="@string/select_contact">
 
+            <meta-data
+                android:name="android.app.default_searchable"
+                android:resource="@xml/searchable"/>
+
+            <intent-filter>
+                <action android:name="android.intent.action.SEARCH"/>
+            </intent-filter>
+
             <intent-filter>
                 <action android:name="android.intent.action.PICK"/>
                 <category android:name="android.intent.category.DEFAULT"/>

app/src/main/kotlin/com/simplemobiletools/contacts/pro/activities/SelectContactActivity.kt

@@ -1,11 +1,15 @@
 package com.simplemobiletools.contacts.pro.activities
 
+import android.app.SearchManager
+import android.content.Context
 import android.content.Intent
 import android.net.Uri
 import android.os.Bundle
 import android.provider.ContactsContract
 import android.view.Menu
 import android.view.MenuItem
+import androidx.appcompat.widget.SearchView
+import androidx.core.view.MenuItemCompat
 import com.simplemobiletools.commons.extensions.*
 import com.simplemobiletools.commons.helpers.PERMISSION_READ_CONTACTS
 import com.simplemobiletools.commons.helpers.PERMISSION_WRITE_CONTACTS
@@ -22,6 +26,9 @@ import kotlinx.android.synthetic.main.activity_select_contact.*
 
 class SelectContactActivity : SimpleActivity() {
     private var specialMimeType: String? = null
+    private var isSearchOpen = false
+    private var searchMenuItem: MenuItem? = null
+    private var contactsIgnoringSearch = ArrayList<Contact>()
 
     override fun onCreate(savedInstanceState: Bundle?) {
         super.onCreate(savedInstanceState)
@@ -55,8 +62,14 @@ class SelectContactActivity : SimpleActivity() {
         }
     }
 
+    override fun onStop() {
+        super.onStop()
+        searchMenuItem?.collapseActionView()
+    }
+
     override fun onCreateOptionsMenu(menu: Menu): Boolean {
         menuInflater.inflate(R.menu.menu_select_activity, menu)
+        setupSearch(menu)
         updateMenuItemColors(menu)
         return true
     }
@@ -70,6 +83,52 @@ class SelectContactActivity : SimpleActivity() {
         return true
     }
 
+    private fun setupSearch(menu: Menu) {
+        val searchManager = getSystemService(Context.SEARCH_SERVICE) as SearchManager
+        searchMenuItem = menu.findItem(R.id.search)
+        (searchMenuItem!!.actionView as SearchView).apply {
+            setSearchableInfo(searchManager.getSearchableInfo(componentName))
+            isSubmitButtonEnabled = false
+            queryHint = getString(R.string.search_contacts)
+            setOnQueryTextListener(object : SearchView.OnQueryTextListener {
+                override fun onQueryTextSubmit(query: String) = false
+
+                override fun onQueryTextChange(newText: String): Boolean {
+                    if (isSearchOpen) {
+                        onSearchQueryChanged(newText)
+                    }
+                    return true
+                }
+            })
+        }
+
+        MenuItemCompat.setOnActionExpandListener(searchMenuItem, object : MenuItemCompat.OnActionExpandListener {
+            override fun onMenuItemActionExpand(item: MenuItem?): Boolean {
+                onSearchOpened()
+                isSearchOpen = true
+                return true
+            }
+
+            override fun onMenuItemActionCollapse(item: MenuItem?): Boolean {
+                onSearchClosed()
+                isSearchOpen = false
+                return true
+            }
+        })
+    }
+
+    private fun onSearchQueryChanged(text: String) {
+
+    }
+
+    private fun onSearchOpened() {
+        contactsIgnoringSearch = (select_contact_list.adapter as? SelectContactsAdapter)?.contacts ?: ArrayList()
+    }
+
+    private fun onSearchClosed() {
+
+    }
+
     private fun showSortingDialog() {
         ChangeSortingDialog(this) {
             initContacts()

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

@@ -22,7 +22,7 @@ import com.simplemobiletools.contacts.pro.models.Contact
 import kotlinx.android.synthetic.main.item_add_favorite_with_number.view.*
 import java.util.*
 
-class SelectContactsAdapter(val activity: SimpleActivity, val contacts: List<Contact>, private val selectedContacts: ArrayList<Contact>, private val allowPickMultiple: Boolean,
+class SelectContactsAdapter(val activity: SimpleActivity, val contacts: ArrayList<Contact>, private val selectedContacts: ArrayList<Contact>, private val allowPickMultiple: Boolean,
                             private val recyclerView: MyRecyclerView, private val itemClick: ((Contact) -> Unit)? = null) : RecyclerView.Adapter<SelectContactsAdapter.ViewHolder>() {
     private val itemViews = SparseArray<View>()
     private val selectedPositions = HashSet<Int>()

app/src/main/res/menu/menu_select_activity.xml

@@ -1,6 +1,12 @@
 <?xml version="1.0" encoding="utf-8"?>
 <menu xmlns:android="http://schemas.android.com/apk/res/android"
       xmlns:app="http://schemas.android.com/apk/res-auto">
+    <item
+        android:id="@+id/search"
+        android:icon="@drawable/ic_search_vector"
+        android:title="@string/search"
+        app:actionViewClass="androidx.appcompat.widget.SearchView"
+        app:showAsAction="collapseActionView|ifRoom"/>
     <item
         android:id="@+id/sort"
         android:icon="@drawable/ic_sort_vector"