Android R - image very tiny

[Shakezulla57]

Expected behaviour

Should work the same as Android Q - Image should match view size.

Actual behaviour

On Android R preview the images show up very small - like 5x5 pixels.

Steps to reproduce

Using glide to get bitmap of remote image.

request.into(new SimpleTarget<Bitmap>() {
                    @Override
                    public void onResourceReady(Bitmap resource, Transition<? super Bitmap> transition) {
                        imageView.setImage(ImageSource.bitmap(resource));
                    }
                });

<com.davemorrissey.labs.subscaleview.SubsamplingScaleImageView
    xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent" />

Affected devices

Android R

Affected images

Any

[davemorrissey]

I have reproduced this in an emulator. It is happening because Android is reporting the screen pixel density is 2.75 pixels per inch, when the real value is 440. I suspect this is an emulator bug. Do you have a real device to test it on?

[Shakezulla57]

Unfortunately I do not. Hopefully you're right and I'll keep an eye on the R preview releases to see if it gets resolved on that end.

[davemorrissey]

I have installed the Android R developer preview on my old Pixel 2 and it is not affected by this problem. Everything seems to work as it should.

[OctoNezd]

It seems that this issue happens on emulators and some select devices (e.g. Nokia 6.1 on android 10 and higher on custom ROMs) because they report invalid ydpi and xdpi

[OctoNezd]

Perhaps use densityDpi if xdpi and ydpi are suspiciously low?