prefetch all Last Modified values, not folder by folder

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

@@ -909,6 +909,8 @@ class MainActivity : SimpleActivity(), DirectoryOperationsListener {
         val favoritePaths = getFavoritePaths()
         val dirPathsToRemove = ArrayList<String>()
 
+        val lastModifieds = if (isRPlus()) mLastMediaFetcher!!.getLastModifieds() else HashMap<String, Long>()
+
         try {
             for (directory in dirs) {
                 if (mShouldStopFetching || isDestroyed || isFinishing) {
@@ -927,7 +929,9 @@ class MainActivity : SimpleActivity(), DirectoryOperationsListener {
                         grouping and GROUP_BY_LAST_MODIFIED_DAILY != 0 ||
                         grouping and GROUP_BY_LAST_MODIFIED_MONTHLY != 0
 
-                val curMedia = mLastMediaFetcher!!.getFilesFrom(directory.path, getImagesOnly, getVideosOnly, getProperDateTaken, getProperLastModified, getProperFileSize, favoritePaths, false)
+                val curMedia = mLastMediaFetcher!!.getFilesFrom(directory.path, getImagesOnly, getVideosOnly, getProperDateTaken, getProperLastModified,
+                    getProperFileSize, favoritePaths, false, lastModifieds)
+
                 val newDir = if (curMedia.isEmpty()) {
                     if (directory.path != tempFolderPath) {
                         dirPathsToRemove.add(directory.path)
@@ -1019,7 +1023,9 @@ class MainActivity : SimpleActivity(), DirectoryOperationsListener {
                     grouping and GROUP_BY_LAST_MODIFIED_DAILY != 0 ||
                     grouping and GROUP_BY_LAST_MODIFIED_MONTHLY != 0
 
-            val newMedia = mLastMediaFetcher!!.getFilesFrom(folder, getImagesOnly, getVideosOnly, getProperDateTaken, getProperLastModified, getProperFileSize, favoritePaths, false)
+            val newMedia = mLastMediaFetcher!!.getFilesFrom(folder, getImagesOnly, getVideosOnly, getProperDateTaken, getProperLastModified,
+                getProperFileSize, favoritePaths, false, lastModifieds)
+
             if (newMedia.isEmpty()) {
                 continue
             }

app/src/main/kotlin/com/simplemobiletools/gallery/pro/asynctasks/GetMediaAsynctask.kt

@@ -5,6 +5,7 @@ import android.os.AsyncTask
 import com.simplemobiletools.commons.helpers.SORT_BY_DATE_MODIFIED
 import com.simplemobiletools.commons.helpers.SORT_BY_DATE_TAKEN
 import com.simplemobiletools.commons.helpers.SORT_BY_SIZE
+import com.simplemobiletools.commons.helpers.isRPlus
 import com.simplemobiletools.gallery.pro.extensions.config
 import com.simplemobiletools.gallery.pro.extensions.getFavoritePaths
 import com.simplemobiletools.gallery.pro.helpers.*
@@ -32,19 +33,23 @@ class GetMediaAsynctask(val context: Context, val mPath: String, val isPickImage
         val getProperFileSize = fileSorting and SORT_BY_SIZE != 0
         val favoritePaths = context.getFavoritePaths()
         val getVideoDurations = context.config.showThumbnailVideoDuration
+        val lastModifieds = if (isRPlus()) mediaFetcher.getLastModifieds() else HashMap<String, Long>()
         val media = if (showAll) {
             val foldersToScan = mediaFetcher.getFoldersToScan().filter { it != RECYCLE_BIN && it != FAVORITES && !context.config.isFolderProtected(it) }
             val media = ArrayList<Medium>()
             foldersToScan.forEach {
-                val newMedia = mediaFetcher.getFilesFrom(it, isPickImage, isPickVideo, getProperDateTaken, getProperLastModified, getProperFileSize, favoritePaths, getVideoDurations)
+                val newMedia = mediaFetcher.getFilesFrom(it, isPickImage, isPickVideo, getProperDateTaken, getProperLastModified, getProperFileSize,
+                    favoritePaths, getVideoDurations, lastModifieds)
                 media.addAll(newMedia)
             }
 
             mediaFetcher.sortMedia(media, context.config.getFolderSorting(SHOW_ALL))
             media
         } else {
-            mediaFetcher.getFilesFrom(mPath, isPickImage, isPickVideo, getProperDateTaken, getProperLastModified, getProperFileSize, favoritePaths, getVideoDurations)
+            mediaFetcher.getFilesFrom(mPath, isPickImage, isPickVideo, getProperDateTaken, getProperLastModified, getProperFileSize, favoritePaths,
+                getVideoDurations, lastModifieds)
         }
+
         return mediaFetcher.groupMedia(media, pathToUse)
     }
 

app/src/main/kotlin/com/simplemobiletools/gallery/pro/extensions/Context.kt

@@ -869,6 +869,7 @@ fun Context.getDirectorySortingValue(media: ArrayList<Medium>, path: String, nam
 
 fun Context.updateDirectoryPath(path: String) {
     val mediaFetcher = MediaFetcher(applicationContext)
+    val lastModifieds = mediaFetcher.getFolderLastModifieds(path)
     val getImagesOnly = false
     val getVideosOnly = false
     val hiddenString = getString(R.string.hidden)
@@ -889,7 +890,8 @@ fun Context.updateDirectoryPath(path: String) {
 
     val getProperFileSize = config.directorySorting and SORT_BY_SIZE != 0
     val favoritePaths = getFavoritePaths()
-    val curMedia = mediaFetcher.getFilesFrom(path, getImagesOnly, getVideosOnly, getProperDateTaken, getProperLastModified, getProperFileSize, favoritePaths, false)
+    val curMedia = mediaFetcher.getFilesFrom(path, getImagesOnly, getVideosOnly, getProperDateTaken, getProperLastModified, getProperFileSize,
+        favoritePaths, false, lastModifieds)
     val directory = createDirectoryFromMedia(path, curMedia, albumCovers, hiddenString, includedFolders, getProperFileSize)
     updateDBDirectory(directory)
 }

app/src/main/kotlin/com/simplemobiletools/gallery/pro/helpers/MediaFetcher.kt

@@ -22,7 +22,8 @@ class MediaFetcher(val context: Context) {
     var shouldStop = false
 
     fun getFilesFrom(curPath: String, isPickImage: Boolean, isPickVideo: Boolean, getProperDateTaken: Boolean, getProperLastModified: Boolean,
-                     getProperFileSize: Boolean, favoritePaths: ArrayList<String>, getVideoDurations: Boolean): ArrayList<Medium> {
+                     getProperFileSize: Boolean, favoritePaths: ArrayList<String>, getVideoDurations: Boolean,
+                     lastModifieds: HashMap<String, Long> = HashMap<String, Long>()): ArrayList<Medium> {
         val filterMedia = context.config.filterMedia
         if (filterMedia == 0) {
             return ArrayList()
@@ -35,7 +36,8 @@ class MediaFetcher(val context: Context) {
                 curMedia.addAll(newMedia)
             }
         } else {
-            val newMedia = getMediaInFolder(curPath, isPickImage, isPickVideo, filterMedia, getProperDateTaken, getProperLastModified, getProperFileSize, favoritePaths, getVideoDurations)
+            val newMedia = getMediaInFolder(curPath, isPickImage, isPickVideo, filterMedia, getProperDateTaken, getProperLastModified, getProperFileSize,
+                favoritePaths, getVideoDurations, lastModifieds)
             curMedia.addAll(newMedia)
         }
 
@@ -223,7 +225,8 @@ class MediaFetcher(val context: Context) {
     }
 
     private fun getMediaInFolder(folder: String, isPickImage: Boolean, isPickVideo: Boolean, filterMedia: Int, getProperDateTaken: Boolean,
-                                 getProperLastModified: Boolean, getProperFileSize: Boolean, favoritePaths: ArrayList<String>, getVideoDurations: Boolean): ArrayList<Medium> {
+                                 getProperLastModified: Boolean, getProperFileSize: Boolean, favoritePaths: ArrayList<String>,
+                                 getVideoDurations: Boolean, lastModifieds: HashMap<String, Long>): ArrayList<Medium> {
         val media = ArrayList<Medium>()
         val isRecycleBin = folder == RECYCLE_BIN
         val deletedMedia = if (isRecycleBin) {
@@ -238,7 +241,6 @@ class MediaFetcher(val context: Context) {
         val showHidden = config.shouldShowHidden
         val showPortraits = filterMedia and TYPE_PORTRAITS != 0
         val dateTakens = if (getProperDateTaken && !isRecycleBin) getFolderDateTakens(folder) else HashMap()
-        val lastModifieds = if (getProperLastModified && !isRecycleBin && isRPlus()) getFolderLastModifieds(folder) else HashMap()
         val fileSizes = if (checkProperFileSize || checkFileExistence) getFolderSizes(folder) else HashMap()
 
         val files = when (folder) {
@@ -472,7 +474,7 @@ class MediaFetcher(val context: Context) {
         return dateTakens
     }
 
-    private fun getFolderLastModifieds(folder: String): HashMap<String, Long> {
+    fun getFolderLastModifieds(folder: String): HashMap<String, Long> {
         val lastModifieds = HashMap<String, Long>()
         if (folder != FAVORITES) {
             val projection = arrayOf(
@@ -501,15 +503,31 @@ class MediaFetcher(val context: Context) {
             }
         }
 
-        val lastModifiedValues = if (folder == FAVORITES) {
+        return lastModifieds
-            context.dateTakensDB.getAllDateTakens()
-        } else {
-            context.dateTakensDB.getDateTakensFromPath(folder)
     }
 
-        lastModifiedValues.forEach {
+    fun getLastModifieds(): HashMap<String, Long> {
-            if (!lastModifieds.containsKey(it.fullPath)) {
+        val lastModifieds = HashMap<String, Long>()
-                lastModifieds[it.fullPath] = it.lastModified
+        val projection = arrayOf(
+            Images.Media.DATA,
+            Images.Media.DATE_MODIFIED
+        )
+
+        val uri = Files.getContentUri("external")
+
+        val cursor = context.contentResolver.query(uri, projection, null, null, null)
+        cursor?.use {
+            if (cursor.moveToFirst()) {
+                do {
+                    try {
+                        val lastModified = cursor.getLongValue(Images.Media.DATE_MODIFIED) * 1000
+                        if (lastModified != 0L) {
+                            val path = cursor.getStringValue(Images.Media.DATA)
+                            lastModifieds[path] = lastModified
+                        }
+                    } catch (e: Exception) {
+                    }
+                } while (cursor.moveToNext())
             }
         }