add basic search to media view, related to #48

app/src/main/AndroidManifest.xml

@@ -55,7 +55,17 @@
 
         <activity
             android:name=".activities.MediaActivity"
-            android:parentActivityName=".activities.MainActivity"/>
+            android:parentActivityName=".activities.MainActivity">
+
+            <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"

app/src/main/kotlin/com/simplemobiletools/gallery/activities/MediaActivity.kt

@@ -1,13 +1,17 @@
 package com.simplemobiletools.gallery.activities
 
 import android.app.Activity
+import android.app.SearchManager
 import android.app.WallpaperManager
+import android.content.Context
 import android.content.Intent
 import android.graphics.Bitmap
 import android.net.Uri
 import android.os.Bundle
 import android.os.Handler
+import android.support.v4.view.MenuItemCompat
 import android.support.v7.widget.GridLayoutManager
+import android.support.v7.widget.SearchView
 import android.view.Menu
 import android.view.MenuItem
 import android.view.ViewGroup
@@ -60,6 +64,7 @@ class MediaActivity : SimpleActivity(), MediaAdapter.MediaOperationsListener {
     private var mLastMediaHandler = Handler()
     private var mCurrAsyncTask: GetMediaAsynctask? = null
     private var mZoomListener: MyRecyclerView.MyZoomListener? = null
+    private var mSearchMenuItem: MenuItem? = null
 
     companion object {
         var mMedia = ArrayList<Medium>()
@@ -130,6 +135,11 @@ class MediaActivity : SimpleActivity(), MediaAdapter.MediaOperationsListener {
         }
     }
 
+    override fun onStop() {
+        super.onStop()
+        MenuItemCompat.collapseActionView(mSearchMenuItem)
+    }
+
     override fun onDestroy() {
         super.onDestroy()
         if (config.showAll)
@@ -150,6 +160,33 @@ class MediaActivity : SimpleActivity(), MediaAdapter.MediaOperationsListener {
         }
     }
 
+    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 {
+                    searchQueryChanged(newText)
+                    return true
+                }
+            })
+        }
+    }
+
+    private fun searchQueryChanged(text: String) {
+        Thread {
+            val filtered = mMedia.filter { it.name.contains(text, true) } as ArrayList
+            filtered.sortBy { !it.name.startsWith(text, true) }
+            runOnUiThread {
+                (media_grid.adapter as? MediaAdapter)?.updateMedia(filtered)
+            }
+        }.start()
+    }
+
     private fun tryloadGallery() {
         handlePermission(PERMISSION_WRITE_STORAGE) {
             if (it) {
@@ -260,6 +297,7 @@ class MediaActivity : SimpleActivity(), MediaAdapter.MediaOperationsListener {
             findItem(R.id.toggle_filename).isVisible = config.viewTypeFiles == VIEW_TYPE_GRID
         }
 
+        setupSearch(menu)
         return true
     }
 

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

@@ -2,15 +2,21 @@
 <menu xmlns:android="http://schemas.android.com/apk/res/android"
       xmlns:app="http://schemas.android.com/apk/res-auto">
     <item
-        android:id="@+id/sort"
+        android:id="@+id/search"
-        android:icon="@drawable/ic_sort"
+        android:icon="@drawable/ic_search"
-        android:title="@string/sort_by"
+        android:title="@string/search"
-        app:showAsAction="ifRoom"/>
+        app:actionViewClass="android.support.v7.widget.SearchView"
+        app:showAsAction="collapseActionView|ifRoom"/>
     <item
         android:id="@+id/toggle_filename"
         android:icon="@drawable/ic_label"
         android:title="@string/toggle_filename"
         app:showAsAction="ifRoom"/>
+    <item
+        android:id="@+id/sort"
+        android:icon="@drawable/ic_sort"
+        android:title="@string/sort_by"
+        app:showAsAction="ifRoom"/>
     <item
         android:id="@+id/filter"
         android:icon="@drawable/ic_filter"

app/src/main/res/xml/searchable.xml

@@ -0,0 +1,5 @@
+<?xml version="1.0" encoding="utf-8"?>
+<searchable
+    xmlns:android="http://schemas.android.com/apk/res/android"
+    android:hint="@string/search"
+    android:label="@string/app_name"/>