Develop Reference

Get Uri of recorded video CameraX

I am recording a video with the camerax library, I would like to retrieve the uri of the recorded file to open it with InputStream but it keeps giving me FILENOTFOUND
This is the code I use to start recording the video
contentValues = ContentValues().apply {
put(MediaStore.Video.Media.DISPLAY_NAME, currentFile!!.name)
put(MediaStore.MediaColumns.MIME_TYPE, "video/mp4")
put(MediaStore.MediaColumns.RELATIVE_PATH, "Movies/" + DataHolder.getInstance().albumName)
put(MediaStore.MediaColumns.DATE_TAKEN, System.currentTimeMillis())
}
requireContext().contentResolver.run {
val mediaStoreOutput = MediaStoreOutputOptions.Builder(
requireActivity().contentResolver,
MediaStore.Video.Media.EXTERNAL_CONTENT_URI)
.setContentValues(contentValues)
.build()
currentRecording = videoCapture.output.prepareRecording(requireActivity(), mediaStoreOutput)
.apply { withAudioEnabled() }
.start(mainThreadExecutor, captureListener)
val resolver = requireContext().contentResolver
currentUri = resolver.insert(MediaStore.Video.Media.EXTERNAL_CONTENT_URI, contentValues)
And this is when I try to initialize InputStream:
try {
val resolver: ContentResolver = requireContext().getContentResolver()
val fis: InputStream? = resolver.openInputStream(currentUri!!)
}
catch (e: Exception) {
Log.e("asd", "Error File not found")
}

Try using this path instead:
val path = app.externalMediaDirs[0].absolutePath
val dir = File(path, "/videos")
if (!dir.exists()) {
val success = dir.mkdirs()
if (!success) {
return
// error/no file found
}
}
val file = File(dir , name)
It has become tricky in the new sdk versions to write to storage
In this way you are placing the video in a directory you can later fetch it from

Android Chromecast Sender won't update title and images

I've followed the instruction from Google on how to cast media metadata to chromecast, the initial loading is fine, it will show the title, image and play the stream, but my problem is that I am streaming a live audio stream and need to update the metadata from time to time without having to buffer the audio again.
This is a sample of my code:
override fun loadMediaLoadRequestData(request: PlatformBridgeApis.MediaLoadRequestData?)
{
if (request == null) return
val remoteMediaClient: RemoteMediaClient = remoteMediaClient ?: return
val mediaLoadRequest = getMediaLoadRequestData(request)
remoteMediaClient.load(mediaLoadRequest)
}
fun getMediaLoadRequestData(request: PlatformBridgeApis.MediaLoadRequestData): MediaLoadRequestData {
val mediaInfo = getMediaInfo(request.mediaInfo)
return MediaLoadRequestData.Builder()
.setMediaInfo(mediaInfo)
.setAutoplay(request.shouldAutoplay)
.setCurrentTime(request.currentTime)
.build()
}
fun getMediaInfo(mediaInfo: PlatformBridgeApis.MediaInfo?): MediaInfo? {
if (mediaInfo == null) return null
val streamType = getStreamType(mediaInfo.streamType)
val metadata = getMediaMetadata(mediaInfo.mediaMetadata)
val mediaTracks = mediaInfo.mediaTracks.map { getMediaTrack(it) }
val customData = JSONObject(mediaInfo.customDataAsJson ?: "{}")
return MediaInfo.Builder(mediaInfo.contentId)
.setStreamType(streamType)
.setContentType(mediaInfo.contentType)
.setMetadata(metadata)
.setMediaTracks(mediaTracks)
.setStreamDuration(mediaInfo.streamDuration)
.setCustomData(customData)
.build()
}
Does anyone have any suggestion on how to modify loadMediaLoadRequestData in order to trigger the Chromecast receiver to update only the MediaMetadata and not have the stream buffer again?

android Writing to internal storage is not supported

I am try to take photo in private folder and save to public media store.
val takePictureContract = registerForActivityResult(ActivityResultContracts.TakePicture()) { success ->
if (success) {
uri?.let { fileUri ->
val contentValues = ContentValues().apply {
put(MediaStore.MediaColumns.DISPLAY_NAME, "pic_${System.currentTimeMillis()}")
put(MediaStore.MediaColumns.MIME_TYPE, "image/jpeg")
}
val mediaUri = contentResolver.insert(
MediaStore.Images.Media.INTERNAL_CONTENT_URI,
contentValues
)
mediaUri?.let { mUri ->
contentResolver.openOutputStream(mUri)?.use { os ->
contentResolver.openInputStream(fileUri)?.use { inputStream ->
inputStream.copyTo(os)
}
}
}
}
}
}
fun takePic() {
val currentTimeMillis = System.currentTimeMillis()
val folder = File(filesDir, "images")
val file = File(folder, "pic_${currentTimeMillis}")
folder.mkdirs()
uri = FileProvider.getUriForFile(this, "${packageName}.provider", file)
takePictureContract.launch(uri)
}
But after take photo, I have this error message. What's wrong with my code?
Error message I get is :
java.lang.UnsupportedOperationException: Writing to internal storage is not supported
If change INTERNAL_CONTENT_URI to EXTERNAL_CONTENT_URI, and require permission WRITE_EXTERNAL_STORAGE, I can save photo success.

Deleting physical file using Android content provider MediaStore.Files.getContentUri(VOLUME_NAME_EXTERNAL)

My current Android Application stores pdf files on external storage using
val contentUri = MediaStore.Files.getContentUri(VOLUME_NAME_EXTERNAL)
The application creates a sub folder in the standard Documents folder.
My manifest contains
android:requestLegacyExternalStorage = true
For Android 30 I request the following
val intent = Intent(Settings.ACTION_MANAGE_APP_ALL_FILES_ACCESS_PERMISSION)
val uri = Uri.fromParts("package", packageName, null)
intent.data = uri
startActivity(intent)
I have a background worker that attempts to clear all down loaded files, the code I employ is as follows:-
#RequiresApi(Build.VERSION_CODES.Q)
override suspend fun doActualFlowedWork(): Result {
if (hasSdkHigherThan(Build.VERSION_CODES.P)) {
clearDownloadFiles()
} else {
clearDownloadLegacyFiles()
}
return result ?: Result.success()
}
#Suppress("BlockingMethodInNonBlockingContext")
#RequiresApi(Build.VERSION_CODES.Q)
private fun clearDownloadFiles() {
val resolver = context.contentResolver
val relativeLocation = "${Environment.DIRECTORY_DOCUMENTS}${MY_SUB_FOLDER}"
val contentUri = MediaStore.Files.getContentUri(VOLUME_NAME_EXTERNAL)
resolver.query(
contentUri,
arrayOf(MediaStore.MediaColumns._ID, MediaStore.MediaColumns.DISPLAY_NAME, MediaStore.MediaColumns.RELATIVE_PATH),
"${MediaStore.MediaColumns.RELATIVE_PATH}=?",
arrayOf(relativeLocation),
null
).use { cursor ->
cursor?.let {
while (it.moveToNext()) {
val idIndex = cursor.getColumnIndex(MediaStore.MediaColumns._ID)
val displayNameIndex = cursor.getColumnIndex(MediaStore.MediaColumns.DISPLAY_NAME)
val relativePathNameIndex = cursor.getColumnIndex(MediaStore.MediaColumns.RELATIVE_PATH)
if (cursor.getString(relativePathNameIndex) == relativeLocation) {
val fileContentUri = MediaStore.Files.getContentUri(VOLUME_NAME_EXTERNAL, cursor.getLong(idIndex))
val count = context.contentResolver.delete(fileContentUri, null, null)
if (count == 0) Timber.e("FAILED to clear downloaded file = ${cursor.getString(displayNameIndex)}")
else Timber.i("Cleared downloaded file = ${cursor.getString(displayNameIndex)}")
}
}
}
}
}
#Suppress("DEPRECATION")
private fun clearDownloadLegacyFiles() {
val documentsFolder = File(Environment.getExternalStorageDirectory(), Environment.DIRECTORY_DOCUMENTS)
if (!documentsFolder.exists()) return
val mendeleyLiteSubFolder = File(Environment.getExternalStorageDirectory(), "${Environment.DIRECTORY_DOCUMENTS}$MY_SUB_FOLDER")
if (!mendeleyLiteSubFolder.exists()) return
val downloadFiles = mendeleyLiteSubFolder.listFiles()
downloadFiles?.forEach { downloadFile ->
if (downloadFile.exists()) downloadFile.delete()
Timber.i("Clearing downloaded file = $downloadFile")
}
}
This clear down worker completes OK, with the logs showing the files have been deleted
however when I use Android Studio Device File Explorer to view my Document sub folder the physical pdf files are still present.
Are my expectations incorrect?
What does this code achieve context.contentResolver.delete(fileContentUri, null, null)?
How do I delete physical files from my sub folder?

Android Exoplayer - Different URLs for different video quality and change manually

I am using exoplayer in my application. I am using it to play video from a url. What i am trying to do is that i have three different urls for high,medium and low quality of same the video, and i would like to let the user to be able to change the video quality manually.
{
"lowQualityUrl":"string url",
"mediumQualityUrl":"string url",
"highQualityUrl":"string url"
}
In JWplayer there is an option to add different sources/url for different qualities. Is there something similar that can be done in exoplayer...?
Edit : I don't want to play videos one after another. I just want to switch to a different quality of the same video, like in youtube. But instead of using a single url for the source, what i have are 3 different urls for 3 qualities(low,medium,high) of the same video.

I found a solution or rather a workaround for the issue. I am using the exoplayer inside a recylcerview. This code might need some optimization.
I got this idea from another answer which was under this question,which had this github link, but i think the author deleted it.
What i did was create a class for keeping all the urls for a particular video. Then showing a Spinner above the exoplayer, and when user selects a particular quality then i prepare the exoplayer with the new URL, and then seekto to the previously playing position. You can ignore the StringUtils methods.
VideoPlayerConfig.kt
object VideoPlayerConfig {
//Minimum Video you want to buffer while Playing
val MIN_BUFFER_DURATION = 3000
//Max Video you want to buffer during PlayBack
val MAX_BUFFER_DURATION = 5000
//Min Video you want to buffer before start Playing it
val MIN_PLAYBACK_START_BUFFER = 1500
//Min video You want to buffer when user resumes video
val MIN_PLAYBACK_RESUME_BUFFER = 5000
}
VideoQuality.kt
You can change this class according to your need. I need to store exactly 3 urls for low,medium and high quality urls. And i needed to show them in that order as well in the spinner.
class VideoQuality {
private val videoQualityUrls = HashMap<String, String>()
companion object {
val LOW = getStringResource(R.string.low)
val MEDIUM = getStringResource(R.string.medium)
val HIGH = getStringResource(R.string.high)
}
val qualityArray
get() = arrayListOf<String>().apply {
if (hasQuality(LOW)) add(LOW)
if (hasQuality(MEDIUM)) add(MEDIUM)
if (hasQuality(HIGH)) add(HIGH)
}
var defaultVideoQuality: String? = HIGH
var lowQuality: String?
set(value) {
setVideoQualityUrl(LOW, value)
}
get() = videoQualityUrls[LOW] ?: ""
var mediumQuality: String?
set(value) {
setVideoQualityUrl(MEDIUM, value)
}
get() = videoQualityUrls[MEDIUM] ?: ""
var highQuality: String?
set(value) {
setVideoQualityUrl(HIGH, value)
}
get() = videoQualityUrls[HIGH] ?: ""
private fun setVideoQualityUrl(quality: String?, url: String?) {
if (url != null && quality != null) {
videoQualityUrls[quality] = url
}
}
private fun hasQuality(quality: String?): Boolean {
if (videoQualityUrls[quality] == null) {
return false
}
return true
}
fun getVideoQualityUrl(quality: String?): String? {
return videoQualityUrls[quality]
}
}
Methods to implement for the exoplayer
private fun initializePlayer() {
if (exoPlayer == null) {
val loadControl = DefaultLoadControl.Builder()
.setBufferDurationsMs(2 * VideoPlayerConfig.MIN_BUFFER_DURATION, 2 * VideoPlayerConfig.MAX_BUFFER_DURATION, VideoPlayerConfig.MIN_PLAYBACK_START_BUFFER, VideoPlayerConfig.MIN_PLAYBACK_RESUME_BUFFER)
.createDefaultLoadControl()
//Create a default TrackSelector
val videoTrackSelectionFactory = AdaptiveTrackSelection.Factory()
val trackSelector = DefaultTrackSelector(videoTrackSelectionFactory)
exoPlayer = ExoPlayerFactory.newSimpleInstance(itemView.context, DefaultRenderersFactory(itemView.context), trackSelector, loadControl)
exoPlayer!!.addListener(PlayEventListener())
val videoQualityInfo:VideoQuality = videoListVideoDataHolderData!!.videoQualityUrls //Just an object that i created and stored in a dataHolder for this view.
val url = videoQualityInfo.getVideoQualityUrl(videoQualityInfo.defaultVideoQuality) ?: ""
preparePlayer(url)
}
}
private fun preparePlayer(url: String) {
if (url.isNotEmpty()) {
val mediaSource = buildMediaSource(StringUtils.makeHttpUrl(url))
exoPlayer?.prepare(mediaSource)
videoView.player = exoPlayer
} else {
Log.d(APPTAG, "NO DEFAULT URL")
}
}
private fun buildMediaSource(url: String): ProgressiveMediaSource {
val mUri: Uri = Uri.parse(url)
val dataSourceFactory = DefaultDataSourceFactory(
itemView.context,
Util.getUserAgent(itemView.context, getStringResource(R.string.app_name))
)
val videoSource = ProgressiveMediaSource.Factory(dataSourceFactory)
.createMediaSource(mUri)
return videoSource
}
And then in the Spinner/QualitySelector's OnItemSelectedListener
videoQualitySpinner.onItemSelectedListener = object : AdapterView.OnItemSelectedListener {
override fun onNothingSelected(parent: AdapterView<*>?) {
}
override fun onItemSelected(parent: AdapterView<*>?, view: View?, position: Int, id: Long) {
val currentTime = exoPlayer?.currentPosition
val isReadyToPlay = exoPlayer?.playWhenReady
val urlToBuild = when (videoQualityUrls.qualityArray[position]) {
VideoQuality.LOW -> videoQualityUrls.lowQuality
VideoQuality.MEDIUM -> videoQualityUrls.mediumQuality
else -> videoQualityUrls.highQuality
}
Log.d(APPTAG, "VIDEO DETAILS :::: ${currentTime} ${isReadyToPlay} ${urlToBuild}")
if (!urlToBuild.isNullOrEmpty()) {
val mediaSource = buildMediaSource(StringUtils.makeHttpUrl(urlToBuild))
exoPlayer?.prepare(mediaSource)
exoPlayer?.playWhenReady = isReadyToPlay ?: false
exoPlayer?.seekTo(currentTime ?: 0)
}
}
}