Monospace tabular numbers in Android TextViews

Question

I have a custom font which has variable-width numeric glyphs by default, and I would like to use the font's monospace tabular numbers feature in an Android TextView so that numbers align vertically.

That is, change something like this:

to something like this:

Answer 1

To select a font's tabular number feature, use TextView's fontFeatureSettings with tnum:

<TextView
    ...
    android:fontFeatureSettings="tnum"
    android:text="1111.11\n2222.22"
    />

Requires API level 21.