WithSeekBarProgress: Matcher to check the value/progress of a SeekBar

WithSeekBarProgress.java

public static Matcher<View> withSeekbarProgress(final int expectedProgress) {
    return new BoundedMatcher<View, AppCompatSeekBar>(AppCompatSeekBar.class) {
        @Override
        public void describeTo(Description description) {
            description.appendText("expected: ");
            description.appendText("" + expectedProgress);
        }
        @Override
        public boolean matchesSafely(AppCompatSeekBar seekBar) {
            return seekBar.getProgress() == expectedProgress;
        }
    };
}

//how to use it
onView(withId(R.id.my_seekbar)).check(matches(withSeekbarProgress(100)));