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Android fetch all music files And display in the list

I am having difficulty in importing music files in android. Problem is: I want to get all the music on the phone, but it doesn't work, only some of them are coming.
Hello, I am having difficulty in importing music files in android. Problem is: I want to get all the music on the phone, but it doesn't work, only some of them are coming.Why not coming ?
val arrayList: ArrayList<AudioModel> = ArrayList<AudioModel>()
val projection = arrayOf(
Audio.Media._ID,
Audio.Media.DISPLAY_NAME,
Audio.Media.DURATION,
Audio.Media.SIZE
)
val selection = Audio.Media.DISPLAY_NAME +
" >= ?"
val selectionArgs = arrayOf(TimeUnit.MILLISECONDS.convert(5, TimeUnit.MINUTES).toString())
val sortOrder = Audio.Media.DISPLAY_NAME + " ASC"
val cursor: Cursor? = activity?.contentResolver?.query(
MediaStore.Audio.Media.EXTERNAL_CONTENT_URI,
projection,
selection,
selectionArgs,
sortOrder
)
val idColumn = cursor!!.getColumnIndexOrThrow(Audio.Media._ID)
val nameColumn = cursor!!.getColumnIndexOrThrow(Audio.Media.DISPLAY_NAME)
val durationColumn = cursor!!.getColumnIndexOrThrow(Audio.Media.DURATION)
val sizeColumn = cursor!!.getColumnIndexOrThrow(Audio.Media.SIZE)
while (cursor.moveToNext()) {
val id = cursor.getLong(idColumn)
val name = cursor.getString(nameColumn)
val duration = cursor.getInt(durationColumn)
val size = cursor.getInt(sizeColumn)
val contentUri = ContentUris.withAppendedId(
Audio.Media.EXTERNAL_CONTENT_URI, id
)
// Stores column values and the contentUri in a local object
// that represents the media file.
arrayList.add(AudioModel(contentUri.toString(),name,duration))
}

Getting photo dimension of locally stored photo

I'd like to know photos width and height before loading a bitmap. I'm using latest approach of ContentResolver to query locally stored photos.
contentResolver.query(
collection,
projection,
selection,
selectionArgs,
sortOrder
)!!.use { cursor ->
while (cursor.moveToNext()) {
// Use an ID column from the projection to get
// a URI representing the media item itself.
val idColumn = cursor.getColumnIndex(MediaStore.Images.Media._ID)
val widthColumn = cursor.getColumnIndex(MediaStore.Images.Media.WIDTH)
val id: Long = cursor.getLong(idColumn)
val width: Int = cursor.getInt(widthColumn) //CRASH
}
Cursor is crashing on the selected line width:
IllegalStateException: Couldn't read row 0, col -1 from CursorWindow. Make sure the Cursor is initialized correctly before accessing data from it.
How am I supposed to do that then?

Try This
val projection = arrayOf(
MediaStore.Images.Media._ID,
MediaStore.Images.Media.WIDTH,
MediaStore.Images.Media.HEIGHT
)
val images: Uri = MediaStore.Images.Media.EXTERNAL_CONTENT_URI
contentResolver.query(
images,
projection,
null,
null,
null
)!!.use { cursor ->
if (cursor.count > 0) {
val idColumn = cursor.getColumnIndex(MediaStore.Images.Media._ID)
val widthColumn = cursor.getColumnIndex(MediaStore.Images.Media.WIDTH)
val heightColumn = cursor.getColumnIndex(MediaStore.Images.Media.HEIGHT)
while (cursor.moveToNext()) {
val id: Long = cursor.getLong(idColumn)
val width: Int = cursor.getInt(widthColumn)
val height: Int = cursor.getInt(heightColumn)
Log.e("tag", " width :: $width - height :: $height");
}
}
}

Display the album cover of an Audio file with Kotlin - Android

I've seen a lot of people ask questions related to this, but they were all written in Java and they all use the method getContentResolver().loadThumbnail(imageUri, thumbSize, null);, but how to use loadThumbnail() in Kotlin?
Here is my attempt:
while (cursor.moveToNext()) {
val id = cursor.getLong(idColumn)
val displayName = cursor.getString(displayNameColumn)
val album = cursor.getString(albumColumn)
val albumId = cursor.getLong(albumIdColumn)
val duration = cursor.getString(durationColumn)
val contentUri = ContentUris.withAppendedId(
MediaStore.Audio.Media.EXTERNAL_CONTENT_URI, id
)
val albumUri = ContentUris.withAppendedId(
MediaStore.Audio.Albums.EXTERNAL_CONTENT_URI, albumId
)
val albumCover = ContentResolver().loadThumbnail(
albumUri,
Size(100, 100),
null
)
val song = Song(id, displayName, album, albumId, duration, contentUri, albumUri,
albumCover.asImageBitmap())
songs += song
Log.v(TAG, "Added song：${song.displayName}")
}
Then Android studio prompted me with an error about ContentResolver():
Cannot create an instance of an abstract class
So how do I use loadThumbnail() appropriately?
Thank you!

code 2067 SQLITE_CONSTRAINT_UNIQUE when working with Android MediaStorage

The following code is used to save files from the app to downloads:
Uri collection = MediaStore.Downloads.EXTERNAL_CONTENT_URI;
ContentValues values = new ContentValues();
values.put(MediaStore.Downloads.DISPLAY_NAME, filename);
values.put(MediaStore.Downloads.MIME_TYPE, mimeType);
values.put(MediaStore.Downloads.RELATIVE_PATH, Environment.DIRECTORY_DOWNLOADS);
ContentResolver contentResolver = context.getApplicationContext().getContentResolver();
Uri uri = contentResolver.insert(collection, values);
OutputStream outputStream = context.getApplicationContext().getContentResolver().openOutputStream(uri, "w");
Everything is saved, however, if you delete the file from downloads manually, and then try to download it again from the application, an error appears:
android.database.sqlite.SQLiteConstraintException: UNIQUE constraint failed: files._data (code 2067 SQLITE_CONSTRAINT_UNIQUE[2067])
Is there a way to fix this or will I have to use unique names for each download?

This error happens because the machanism of OS: if we delete manually a file (media), its database will not be deleted immediately. Until we restart device.
Have a approach for this problem (still not be optimized - hope receiving sharing from people), such as:
Step 1: Get info of file via its name
Step 2: Ask OS to update its database via MediaScannerConnection.scanFile
Step 3: Use current code that has above problem
Codes for steps (collected on internet)
Step 1:
fun findByFileName(fileName: String): MutableList<FileInfo> {
val files = mutableListOf<FileInfo>()
val collection =
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.Q) {
MediaStore.Video.Media.getContentUri(MediaStore.VOLUME_EXTERNAL)
} else {
MediaStore.Video.Media.EXTERNAL_CONTENT_URI
}
val projection = arrayOf(
MediaStore.Video.Media._ID,
MediaStore.Video.Media.DISPLAY_NAME,
MediaStore.Video.Media.DURATION,
MediaStore.Video.Media.SIZE,
MediaStore.Video.Media.DATA
)
val selection = "${MediaStore.Video.Media.DISPLAY_NAME} LIKE ?"
val selectionArgs = arrayOf(
fileName
)
// Display videos in alphabetical order based on their display name.
val sortOrder = "${MediaStore.Video.Media.DISPLAY_NAME} ASC"
val query = context.contentResolver.query(
collection,
projection,
selection,
selectionArgs,
sortOrder
)
query?.use { cursor ->
// Cache column indices.
val idColumn = cursor.getColumnIndexOrThrow(MediaStore.Video.Media._ID)
val nameColumn =
cursor.getColumnIndexOrThrow(MediaStore.Video.Media.DISPLAY_NAME)
val durationColumn =
cursor.getColumnIndexOrThrow(MediaStore.Video.Media.DURATION)
val sizeColumn = cursor.getColumnIndexOrThrow(MediaStore.Video.Media.SIZE)
val dataColumn = cursor.getColumnIndexOrThrow(MediaStore.Video.Media.DATA)
while (cursor.moveToNext()) {
// Get values of columns for a given video.
val id = cursor.getLong(idColumn)
val name = cursor.getString(nameColumn)
val duration = cursor.getInt(durationColumn)
val size = cursor.getInt(sizeColumn)
val data = cursor.getStringOrNull(dataColumn)
val contentUri: Uri = ContentUris.withAppendedId(
MediaStore.Video.Media.EXTERNAL_CONTENT_URI,
id
)
// Stores column values and the contentUri in a local object
// that represents the media file.
files += FileInfo(contentUri, name, duration, size, data)
}
}
return files
}
data class FileInfo(
val uri: Uri,
val name: String,
val duration: Int,
val size: Int,
val data: String? = null
)
Step 2 + Step 3:
val exitedData = findByFileName(fileName = name)
if (exitedData != null) {
MediaScannerConnection.scanFile(context, arrayOf(exitedData.first().data.toString()), null, object: MediaScannerConnection.OnScanCompletedListener {
override fun onScanCompleted(path: String?, uri: Uri?) {
// Step 3
// Use current code have this problem
...
}
}
} else {
// Save file normally
// Use current code have this problem
...
}

Android contentResolver query with MediaStore returns empty cursor

I'm trying to get all the images on the device, for now my code is:
val imageProjection = arrayOf(
MediaStore.Images.Media._ID,
MediaStore.Images.Media.DISPLAY_NAME,
MediaStore.Images.Media.SIZE,
MediaStore.Images.Media.DATE_TAKEN,
)
val cursor = context.contentResolver.query(
MediaStore.Images.Media.EXTERNAL_CONTENT_URI,
imageProjection,
null,
null,
"${MediaStore.Images.Media.DATE_MODIFIED} DESC"
)
cursor?.use {
val idColumn = it.getColumnIndexOrThrow(MediaStore.Images.Media._ID)
val nameColumn = it.getColumnIndexOrThrow(MediaStore.Images.Media.DISPLAY_NAME)
val sizeColumn = it.getColumnIndexOrThrow(MediaStore.Images.Media.SIZE)
val dateColumn = it.getColumnIndexOrThrow(MediaStore.Images.Media.DATE_TAKEN)
while (it.moveToNext()) {
val id = it.getLong(idColumn)
val name = it.getString(nameColumn)
val size = it.getString(sizeColumn)
val date = it.getString(dateColumn)
Log.d("IMAGE", "$id $name $size $date")
}
}
The query does give me a Cursor, but the Cursor appears to be empty as the code never enter the while.
I've checked that i have the READ_EXTERNAL_STORAGE permission, and i do have it, but it still doesn't work, i also tried using MediaStore.Images.Media.INTERNAL_CONTENT_URI as the query uri, but that didn't change anything, the result is always an empty cursor.
Can someone give me an hint on what i'm doing wrong?