So in my app I am loading images using AsyncImage
@Compose
...
AsyncImage(model = link,
contentDescription = title,
...
And it loads the images in the app using jetpack compose. I've made a download button and when I click I want to download an image to the external storage with downloadManager.
...
val requestPermissionLauncher =
rememberLauncherForActivityResult(ActivityResultContracts.RequestPermission()
){ isGranted: Boolean ->
if(isGranted){
Log.i("Permission: ", "Granted")
}
else {
Log.i("Permission: ", "Denied")
}
}
IconButton(
onClick = {
if(Build.VERSION.SDK_INT >= Build.VERSION_CODES.Q)
{
if(ContextCompat.checkSelfPermission(context, Manifest.permission.WRITE_EXTERNAL_STORAGE) == PackageManager.PERMISSION_GRANTED)
{
// IF PERMISSION GRANTED DOWNLOAD IMAGE
fun downloading(link, title, context)
Toast.makeText(context, "Downloaded", Toast.LENGTH_SHORT).show()
}
else if(ContextCompat.checkSelfPermission(context, Manifest.permission.WRITE_EXTERNAL_STORAGE) == PackageManager.PERMISSION_GRANTED)
{
//PERMISSION HAS NOT BEEN ASKED YET
requestPermissionLauncher.launch(
Manifest.permission.WRITE_EXTERNAL_STORAGE
)
}
}
else{
// IF <= Build.VERSION_CODES.Q, NO NEED FOR PERMISSION
fun downloading(link, title, context)
Toast.makeText(context, "Downloaded", Toast.LENGTH_SHORT).show()
}
}) {
Icon(
Icons.Outlined.ArrowDropDown,
contentDescription = "Download Button",
)}
This is the function to download the image. But it doesn't do anything when I click the button. I have the permissions on the AndroidManifest.xml. I looked at my downloaded images and they are not there. The permission works fine and I'm not getting any errors. I just can't download the image.
fun downloading(imageLink:String, title:String, context: Context){
val request = DownloadManager.Request(Uri.parse(imageLink))
request.setAllowedNetworkTypes(DownloadManager.Request.NETWORK_WIFI or DownloadManager.Request.NETWORK_MOBILE)
request.setTitle("Download")
request.setDescription("Downloading Image")
request.setNotificationVisibility(DownloadManager.Request.VISIBILITY_VISIBLE_NOTIFY_COMPLETED)
request.setDestinationInExternalPublicDir(Environment.DIRECTORY_DOWNLOADS,
"${System.currentTimeMillis()}")
val manager = context.getSystemService(Context.DOWNLOAD_SERVICE) as DownloadManager
manager.enqueue(request)
}
AndroidManifest.xml
<uses-permission android:name="android.permission.INTERNET"/>
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"
android:maxSdkVersion="28" />
<uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE"/>
<uses-permission android:name="android.permission.ACCESS_DOWNLOAD_MANAGER" />
