start migrating search related functionality into SearchActivity

app/src/main/AndroidManifest.xml

@@ -36,14 +36,6 @@
             android:name=".activities.MainActivity"
             android:resizeableActivity="true">
 
-            <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"/>
@@ -81,6 +73,21 @@
 
         </activity>
 
+        <activity
+            android:name=".activities.SearchActivity"
+            android:label="@string/search"
+            android:parentActivityName=".activities.MainActivity"
+            android:resizeableActivity="true">
+
+            <meta-data
+                android:name="android.app.default_searchable"
+                android:resource="@xml/searchable"/>
+
+            <intent-filter>
+                <action android:name="android.intent.action.SEARCH"/>
+            </intent-filter>
+        </activity>
+
         <activity
             android:name=".activities.ViewPagerActivity"
             android:configChanges="orientation|keyboardHidden|screenSize"

app/src/main/kotlin/com/simplemobiletools/gallery/pro/activities/MainActivity.kt

@@ -1,9 +1,7 @@
 package com.simplemobiletools.gallery.pro.activities
 
 import android.app.Activity
-import android.app.SearchManager
 import android.content.ClipData
-import android.content.Context
 import android.content.Intent
 import android.net.Uri
 import android.os.Bundle
@@ -14,8 +12,6 @@ import android.view.MenuItem
 import android.view.ViewGroup
 import android.widget.FrameLayout
 import android.widget.Toast
-import androidx.appcompat.widget.SearchView
-import androidx.core.view.MenuItemCompat
 import androidx.recyclerview.widget.RecyclerView
 import com.simplemobiletools.commons.dialogs.ConfirmationDialog
 import com.simplemobiletools.commons.dialogs.CreateNewFolderDialog
@@ -65,7 +61,6 @@ class MainActivity : SimpleActivity(), DirectoryOperationsListener {
     private var mIsPasswordProtectionPending = false
     private var mWasProtectionHandled = false
     private var mShouldStopFetching = false
-    private var mIsSearchOpen = false
     private var mLatestMediaId = 0L
     private var mLatestMediaDateId = 0L
     private var mCurrentPathPrefix = ""                 // used at "Group direct subfolders" for navigation
@@ -73,7 +68,6 @@ class MainActivity : SimpleActivity(), DirectoryOperationsListener {
     private var mLastMediaHandler = Handler()
     private var mTempShowHiddenHandler = Handler()
     private var mZoomListener: MyRecyclerView.MyZoomListener? = null
-    private var mSearchMenuItem: MenuItem? = null
     private var mDirs = ArrayList<Directory>()
 
     private var mStoredAnimateGifs = true
@@ -224,8 +218,6 @@ class MainActivity : SimpleActivity(), DirectoryOperationsListener {
 
     override fun onStop() {
         super.onStop()
-        mSearchMenuItem?.collapseActionView()
-
         if (config.temporarilyShowHidden || config.tempSkipDeleteConfirmation) {
             mTempShowHiddenHandler.postDelayed({
                 config.temporarilyShowHidden = false
@@ -276,7 +268,6 @@ class MainActivity : SimpleActivity(), DirectoryOperationsListener {
                 findItem(R.id.reduce_column_count).isVisible = config.viewTypeFolders == VIEW_TYPE_GRID && config.dirColumnCnt > 1
                 findItem(R.id.hide_the_recycle_bin).isVisible = useBin && config.showRecycleBinAtFolders
                 findItem(R.id.show_the_recycle_bin).isVisible = useBin && !config.showRecycleBinAtFolders
-                setupSearch(this)
             }
         }
 
@@ -288,6 +279,7 @@ class MainActivity : SimpleActivity(), DirectoryOperationsListener {
 
     override fun onOptionsItemSelected(item: MenuItem): Boolean {
         when (item.itemId) {
+            R.id.search -> launchSearchActivity()
             R.id.sort -> showSortingDialog()
             R.id.filter -> showFilterMediaDialog()
             R.id.open_camera -> launchCamera()
@@ -331,43 +323,6 @@ class MainActivity : SimpleActivity(), DirectoryOperationsListener {
         }
     }
 
-    private fun setupSearch(menu: Menu) {
-        val searchManager = getSystemService(Context.SEARCH_SERVICE) as SearchManager
-        mSearchMenuItem = menu.findItem(R.id.search)
-        (mSearchMenuItem?.actionView as? SearchView)?.apply {
-            setSearchableInfo(searchManager.getSearchableInfo(componentName))
-            isSubmitButtonEnabled = false
-            setOnQueryTextListener(object : SearchView.OnQueryTextListener {
-                override fun onQueryTextSubmit(query: String) = false
-
-                override fun onQueryTextChange(newText: String): Boolean {
-                    if (mIsSearchOpen) {
-                        setupAdapter(mDirs, newText)
-                    }
-                    return true
-                }
-            })
-        }
-
-        MenuItemCompat.setOnActionExpandListener(mSearchMenuItem, object : MenuItemCompat.OnActionExpandListener {
-            override fun onMenuItemActionExpand(item: MenuItem?): Boolean {
-                mIsSearchOpen = true
-                directories_refresh_layout.isEnabled = false
-                return true
-            }
-
-            // this triggers on device rotation too, avoid doing anything
-            override fun onMenuItemActionCollapse(item: MenuItem?): Boolean {
-                if (mIsSearchOpen) {
-                    mIsSearchOpen = false
-                    directories_refresh_layout.isEnabled = config.enablePullToRefresh
-                    setupAdapter(mDirs, "")
-                }
-                return true
-            }
-        })
-    }
-
     private fun startNewPhotoFetcher() {
         if (isNougatPlus()) {
             val photoFetcher = NewPhotoFetcher()
@@ -467,6 +422,12 @@ class MainActivity : SimpleActivity(), DirectoryOperationsListener {
         }
     }
 
+    private fun launchSearchActivity() {
+        Intent(this, SearchActivity::class.java).apply {
+            startActivity(this)
+        }
+    }
+
     private fun showSortingDialog() {
         ChangeSortingDialog(this, true, false) {
             directories_grid.adapter = null

app/src/main/kotlin/com/simplemobiletools/gallery/pro/activities/SearchActivity.kt

@@ -0,0 +1,59 @@
+package com.simplemobiletools.gallery.pro.activities
+
+import android.app.SearchManager
+import android.content.Context
+import android.os.Bundle
+import android.view.Menu
+import android.view.MenuItem
+import androidx.appcompat.widget.SearchView
+import androidx.core.view.MenuItemCompat
+import com.simplemobiletools.gallery.pro.R
+
+class SearchActivity : SimpleActivity() {
+    private var mIsSearchOpen = false
+    private var mSearchMenuItem: MenuItem? = null
+
+    override fun onCreate(savedInstanceState: Bundle?) {
+        super.onCreate(savedInstanceState)
+        setContentView(R.layout.activity_search)
+    }
+
+    override fun onStop() {
+        super.onStop()
+        mSearchMenuItem?.collapseActionView()
+    }
+
+    override fun onCreateOptionsMenu(menu: Menu): Boolean {
+        menuInflater.inflate(R.menu.menu_search, menu)
+        setupSearch(menu)
+        return true
+    }
+
+    private fun setupSearch(menu: Menu) {
+        val searchManager = getSystemService(Context.SEARCH_SERVICE) as SearchManager
+        mSearchMenuItem = menu.findItem(R.id.search)
+        (mSearchMenuItem?.actionView as? SearchView)?.apply {
+            setSearchableInfo(searchManager.getSearchableInfo(componentName))
+            isSubmitButtonEnabled = false
+            setOnQueryTextListener(object : SearchView.OnQueryTextListener {
+                override fun onQueryTextSubmit(query: String) = false
+
+                override fun onQueryTextChange(newText: String): Boolean {
+                    return true
+                }
+            })
+        }
+
+        MenuItemCompat.setOnActionExpandListener(mSearchMenuItem, object : MenuItemCompat.OnActionExpandListener {
+            override fun onMenuItemActionExpand(item: MenuItem?): Boolean {
+                return true
+            }
+
+            // this triggers on device rotation too, avoid doing anything
+            override fun onMenuItemActionCollapse(item: MenuItem?): Boolean {
+                return true
+            }
+        })
+        mSearchMenuItem?.expandActionView()
+    }
+}

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

@@ -0,0 +1,71 @@
+<?xml version="1.0" encoding="utf-8"?>
+<androidx.swiperefreshlayout.widget.SwipeRefreshLayout
+    xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:app="http://schemas.android.com/apk/res-auto"
+    android:id="@+id/media_refresh_layout"
+    android:layout_width="match_parent"
+    android:layout_height="wrap_content">
+
+    <RelativeLayout
+        android:id="@+id/media_holder"
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content">
+
+        <com.simplemobiletools.commons.views.MyTextView
+            android:id="@+id/media_empty_text_label"
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"
+            android:gravity="center_horizontal"
+            android:paddingLeft="@dimen/big_margin"
+            android:paddingTop="@dimen/activity_margin"
+            android:paddingRight="@dimen/big_margin"
+            android:text="@string/no_media_with_filters"
+            android:textSize="@dimen/bigger_text_size"
+            android:visibility="gone"/>
+
+        <com.simplemobiletools.commons.views.MyTextView
+            android:id="@+id/media_empty_text"
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:layout_below="@+id/media_empty_text_label"
+            android:layout_centerHorizontal="true"
+            android:background="?attr/selectableItemBackground"
+            android:padding="@dimen/activity_margin"
+            android:text="@string/change_filters_underlined"
+            android:textSize="@dimen/bigger_text_size"
+            android:visibility="gone"/>
+
+        <com.simplemobiletools.commons.views.MyRecyclerView
+            android:id="@+id/media_grid"
+            android:layout_width="match_parent"
+            android:layout_height="match_parent"
+            android:scrollbars="none"
+            app:layoutManager="com.simplemobiletools.commons.views.MyGridLayoutManager"
+            app:spanCount="@integer/media_columns_vertical_scroll"/>
+
+        <com.simplemobiletools.commons.views.FastScroller
+            android:id="@+id/media_vertical_fastscroller"
+            android:layout_width="wrap_content"
+            android:layout_height="match_parent"
+            android:layout_alignParentEnd="true"
+            android:paddingStart="@dimen/normal_margin"
+            android:visibility="gone">
+
+            <include layout="@layout/fastscroller_handle_vertical"/>
+
+        </com.simplemobiletools.commons.views.FastScroller>
+
+        <com.simplemobiletools.commons.views.FastScroller
+            android:id="@+id/media_horizontal_fastscroller"
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"
+            android:layout_alignParentStart="true"
+            android:layout_alignParentBottom="true"
+            android:paddingTop="@dimen/normal_margin"
+            android:visibility="gone">
+
+            <include layout="@layout/fastscroller_handle_horizontal"/>
+
+        </com.simplemobiletools.commons.views.FastScroller>
+    </RelativeLayout>
+</androidx.swiperefreshlayout.widget.SwipeRefreshLayout>

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

@@ -5,8 +5,7 @@
         android:id="@+id/search"
         android:icon="@drawable/ic_search"
         android:title="@string/search"
-        app:actionViewClass="androidx.appcompat.widget.SearchView"
+        app:showAsAction="always"/>
-        app:showAsAction="collapseActionView|ifRoom"/>
     <item
         android:id="@+id/open_camera"
         android:icon="@drawable/ic_camera"

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

@@ -0,0 +1,10 @@
+<?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"
+        android:title="@string/search"
+        app:actionViewClass="androidx.appcompat.widget.SearchView"
+        app:showAsAction="collapseActionView|ifRoom"/>
+</menu>