IssueTracker

I have a ColorStateList color/my_color.xml defined like this:

<selector xmlns:android="http://schemas.android.com/apk/res/android">
    <item android:color="@color/my_other_color"/>
</selector>

And color/my_other_color.xml:

<selector xmlns:android="http://schemas.android.com/apk/res/android">
    <item android:color="?colorPrimary" android:alpha="0.2"/>
</selector>

When I get the default color for the first with:

AppCompatResources.getColorStateList(requireContext(), R.color.my_color).defaultColor

The results are:

• API < 21: #FFFF0000 (opaque red)
• API < 23: #33FF0000 (translucent red)
• API >= 23: #331565c0 (the right color)

Clearly something doesn't work pre API 23. I did a bit of debugging and it seems the issue is on these lines of ColorStateListInflaterCompat:

final TypedArray a = obtainAttributes(r, theme, attrs, R.styleable.ColorStateListItem);
final int baseColor = a.getColor(R.styleable.ColorStateListItem_android_color,
        Color.MAGENTA);
float alphaMod = 1.0f;
if (a.hasValue(R.styleable.ColorStateListItem_android_alpha)) {
    alphaMod = a.getFloat(R.styleable.ColorStateListItem_android_alpha, alphaMod);
} else if (a.hasValue(R.styleable.ColorStateListItem_alpha)) {
    alphaMod = a.getFloat(R.styleable.ColorStateListItem_alpha, alphaMod);
}

Why is a platform method used to resolve color value? Shouldn't AppCompatResources be used here, and if that fails, then TypedArray.getColor?