How to use Glide to download images to device internal storage

Issue

I have a recyclerview that uses Glide to display images from Firebase Realtime database. In the recyclerview I also have a download button. When a user clicks the button, want the image from Firebase to be downloaded into the device internal storage.

Adapter class

    class NatureAdapter(private val mContext: Context, private val natureList: ArrayList<Nature>) : RecyclerView.Adapter<NatureAdapter.ViewHolder>() {
    override fun onCreateViewHolder(parent: ViewGroup, viewType: Int): ViewHolder {
        val view = LayoutInflater.from(parent.context).inflate(R.layout.nature_image_view, parent, false)
        return ViewHolder(view)
    }

    override fun onBindViewHolder(holder: ViewHolder, position: Int) {
        

        Glide.with(mContext)
            .load(natureList[position].space)
            .into(holder.imageView)
    }

    override fun getItemCount(): Int {
        return natureList.size
    }

    inner class ViewHolder(itemView: View) : RecyclerView.ViewHolder(itemView) {
        var imageView: ImageView = itemView.findViewById(R.id.NatureView)

    }

    companion object {
        private const val Tag = "RecyclerView"
    }
}

Data list class

   class Nature (var space: String? = null) {

}

Update

First error

e: C:\Users\Khumo Kwezi Mashapa\AndroidStudioProjects\MyNotepad\app\src\main\java\com\khumomashapa\notes\fragments\NatureWallpapers.kt: (65, 17): Unresolved reference: viewModel

Second error

e: C:\Users\Khumo Kwezi Mashapa\AndroidStudioProjects\MyNotepad\app\src\main\java\com\khumomashapa\notes\fragments\NatureWallpapers.kt: (120, 93): No value passed for parameter 'downloadImage'

Solution

You can also use Download Manager bruv. Just create an OnItemClick interface and simply implement this function in your main fragment or class.

override fun onItemClick(item: String, pos:Int) {
    abstractData = item
    positionItem = pos

    if (checkSelfPermission(requireActivity(), Manifest.permission.WRITE_EXTERNAL_STORAGE) == PackageManager.PERMISSION_GRANTED ){
       requestPermissions(arrayOf(Manifest.permission.WRITE_EXTERNAL_STORAGE), REQ_CODE)

    }else{

    startDownloading()
    }

    Toast.makeText(requireActivity(), "Saved to Internal storage/Pictures/AbstractWallpaper", Toast.LENGTH_LONG).show()

}

private fun startDownloading() {

    val request = DownloadManager.Request(Uri.parse(abstractData))
    request.setAllowedNetworkTypes(DownloadManager.Request.NETWORK_WIFI or DownloadManager.Request.NETWORK_MOBILE)
    request.setTitle("Abstract Wallpaper")
    request.setDescription("Your image is downloading")
    request.allowScanningByMediaScanner()
    request.setNotificationVisibility(DownloadManager.Request.VISIBILITY_VISIBLE_NOTIFY_COMPLETED)
    request.setDestinationInExternalPublicDir(Environment.DIRECTORY_PICTURES, "AbstractWallpapers")
    val manager = activity?.getSystemService(Context.DOWNLOAD_SERVICE) as DownloadManager
    manager.enqueue(request)

    Toast.makeText(requireActivity(), "Download is starting...", Toast.LENGTH_LONG).show()
}

Answered By - Khumo Mashapa