Clash Royale CLAN TAG#URR8PPP

How do I get the MIME Type from a URI with scheme == “android.resource”

I know how to get the MIME Type from an URI when the scheme is "content" or "file". However, I cannot find any solution when the scheme is "android.resource". For example, I have res/raw/video.mp4.

res/raw/video.mp4

val uri = Uri.parse("android.resource://$packageName/$R.raw.video")


The uri is good because I can do the following

videoView.setVideoURI(uri)
videoView.start()


Given such an URI, how can I get its mime type (should be "video/mp4" in this case)?

1 Answer
1

You can use MediaMetadataRetriever for media file:

val uri = Uri.parse("android.resource://$context.packageName/$R.raw.video")
val retriever = MediaMetadataRetriever()
val mimeType = try
retriever.setDataSource(context, uri)
retriever.extractMetadata(MediaMetadataRetriever.METADATA_KEY_MIMETYPE)
catch (e: Exception)
null

Log.d(TAG, "MIME type: $mimeType")


For any other type:

val resId = R.raw.video
val resUri = Uri.parse("android.resource://$context.packageName/$resId")

val mimeType = tryGetMediaMimetype(context, resUri)
?: tryGetImageMimetype(context.resources, resId)
?: tryGetMimeTypeFromExtension(context.resources, resId)
Log.d(TAG, "MIME type: $mimeType")

...

fun tryGetMediaMimetype(context: Context, uri: Uri): String?
val retriever = MediaMetadataRetriever()
return try
retriever.setDataSource(context, uri)
retriever.extractMetadata(MediaMetadataRetriever.METADATA_KEY_MIMETYPE)
catch (e: Exception)
null



fun tryGetImageMimetype(resource: Resources, resId: Int): String?
val options = BitmapFactory.Options()
options.inJustDecodeBounds = true
return try
BitmapFactory.decodeResource(resource, resId, options)
options.outMimeType
catch (e: OutOfMemoryError)
return null



fun tryGetMimeTypeFromExtension(resource: Resources, resId: Int): String?
val value = TypedValue()
resource.getValue(resId, value, true)
val fileName = value.string.toString()

val dotIndex = fileName.lastIndexOf(".")
val extension = if (dotIndex >= 0)
fileName.substring(dotIndex + 1)
else null

return if (extension != null)
MimeTypeMap.getSingleton().getMimeTypeFromExtension(extension)
else null



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