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I was working on an app where i remove a portrait image's background (on-device) and download it upon being created. I have created the background removed bitmap of ARGB_8888 type and i was just about to convert it to a png and download it on the user's device, but even after running the download code, it keeps showing no such downloaded file when i check in my device's gallery but using Log statements i am able to see that the download has happened smoothly.

My button that listens to clicking event for downloading is :

downloadbtn.setOnClickListener { lifecycleScope.launch(Dispatchers.Default) { Log.v("BeforByteStream", "Inside download onclick coroutine") requestRuntimePermissions() // Permission already granted, proceed with downloading downloadToStorage(outputBitmapdnld) } }

My downloading code from bitmap is :

private fun downloadToStorage(outputBitmapdnld: Bitmap) { val bytes = ByteArrayOutputStream().use { stream -> outputBitmapdnld.compress(Bitmap.CompressFormat.PNG, 100, stream) stream.toByteArray() } Log.v("AfterByteStream", "Successfully converted to Bytestream!") if (Environment.getExternalStorageState() == Environment.MEDIA_MOUNTED) { // External storage is available //Toast.makeText(this@ImageStaging, "External storage is available!", Toast.LENGTH_SHORT).show() // Proceed with saving the image Log.v("InsideIf", "External storage is available!") val directory = Environment.getExternalStoragePublicDirectory(Environment.DIRECTORY_DOWNLOADS) Log.v("DirectoryAccess", "Directory successfully accessed!") val fileName = "bgremove69.png" val file = File(directory, fileName) if (!file.exists()) { file.createNewFile() } FileOutputStream(file).use { fos -> fos.write(bytes) } Log.v("FileWritten", "File is directly downloaded to folder supposedly...") } else { // External storage is not available Toast.makeText(this@ImageStaging, "External storage is not available", Toast.LENGTH_SHORT).show() } }

I have successfully asked for image read and write storage permissions from my previous post : Android: Run Time Permissions not working - App Settings Showing No Requested Permissions even when asked for (WRITE_EXTERNAL_STORAGE)

Even after clicking on the download button and after getting the Log output saying "File is directly downloaded to folder supposedly...", I am still not finding the image in my downloads directory.

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Use this code to save in the gallery :

 fun saveImage(image: Bitmap, url:(String) -> Unit): String? { var savedImagePath: String? = null val imageFileName = "JPEG_" + UUID.randomUUID().toString() + ".jpg" val storageDir = File( Environment.getExternalStoragePublicDirectory(Environment.DIRECTORY_PICTURES) .toString() + "/zigap" ) var success = true if (!storageDir.exists()) { success = storageDir.mkdirs() } if (success) { val imageFile = File(storageDir, imageFileName) savedImagePath = imageFile.absolutePath try { val fOut: OutputStream = FileOutputStream(imageFile) image.compress(Bitmap.CompressFormat.JPEG, 100, fOut) fOut.close() } catch (e: Exception) { e.printStackTrace() } // Add the image to the system gallery url(savedImagePath) galleryAddPic(savedImagePath) //Toast.makeText(this, "IMAGE SAVED", Toast.LENGTH_LONG).show() // to make this working, need to manage coroutine, as this execution is something off the main thread } return savedImagePath } private fun galleryAddPic(imagePath: String?) { imagePath?.let { path -> val mediaScanIntent = Intent(Intent.ACTION_MEDIA_SCANNER_SCAN_FILE) val f = File(path) val contentUri: Uri = Uri.fromFile(f) mediaScanIntent.data = contentUri MainRepository.application.sendBroadcast(mediaScanIntent) } }
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I just modified this to download my png image, and it works.

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