How to Get an Uri of an Image Resource in Android

Get the URI of an image stored in drawable

You should use ContentResolver to open resource URIs:

Uri uri = Uri.parse("android.resource://your.package.here/drawable/image_name");
InputStream stream = getContentResolver().openInputStream(uri);

Also you can open file and content URIs using this method.

Android - Reference resource drawable as a URL

Local image resources do not have urls, they have URIs. So if you have image in drawable, you can parse them from resource id to URI.

Uri uri=Uri.parse("R.drawable.image");

However, if you can also put your images in asset folder of the package and access them using their URL. The URL of the image files would be "file:///android_asset/image.png"
You can use either of the option.

How to get URI on imageview with Glide

to get Uri change ur Glide implementation to:

Bitmap bitmap;

 Glide.with(getApplicationContext())
                .load(contentImageUrl)
                .asBitmap()
                .into(new SimpleTarget<Bitmap>() {
                    @Override
                    public void onResourceReady(Bitmap resource, GlideAnimation<? super Bitmap> glideAnimation) {
                        // you can do something with loaded bitmap here
                        contentImage.setImageBitmap(resource);
                        bitmap= resource;
                    }
                });

Now call the method;

    //get URI from bitmap
   Uri uri = getImageUri(getApplicationContext(),bitmap);

in getImageUri function:

public Uri getImageUri(Context inContext, Bitmap inImage) {
  ByteArrayOutputStream bytes = new ByteArrayOutputStream();
  inImage.compress(Bitmap.CompressFormat.JPEG, 100, bytes);
  String path = MediaStore.Images.Media.insertImage(MainActivity.this.getContentResolver(), inImage, UUID.randomUUID().toString() + ".png", "drawing");
  return Uri.parse(path);
} 

You need to add permission in manifest:

<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />

Also for runtime permission: Api>=23

ActivityCompat.requestPermissions(this, new String[]{Manifest.permission.WRITE_EXTERNAL_STORAGE}, 1);

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