Rename R.string.send from strings.xml, and attrs like FullScreen, Element, FullW, to avoid possible clashes with another libraries in android projects.

Assign better-scoped names like ProgressButtonView_send or PBV_send

We need to do:

progressButtonView.setBackgroundTintMode(SRC_IN);
progressButtonView.setBackgroundTintList(colorStateList);

Expose these two methods, or create a public method called tintBackground that calls these two with a resolved color and/or a colorResId (tintBackgroundWithColorResId). Example calls:

progressButtonView.tintBackground(ContextCompat.getColor(ctx, R.color.red));
progressButtonView.tintBackgroundWithColorResId(R.color.red);

ProgressButtonView inherits from FrameLayout, and inside its creation method, it inflates another FrameLayout.
The result is

<FrameLayout>
    <FrameLayout>

use the <merge> tag to improve performance using only one FrameLayout

In my app, the spin color is white and the background is white too, we need to change the color of the spin.

As long as this is a library, it should not define very common strings like @string/send.

Maybe a customized name like progressButtonView_send or even hardcode the Send message

Component needs override setEnabled and call to children's setEnabled too.

Maybe there should be a ProgressButtonView subclass that overrides getLayoutId() with a new layout containing its own RelativeLayout root. That should fit some cases like FrameLayouts or ConstraintLayouts

one of our apps demand this feature

Text appears with AllCaps mode always on.

Please expose some methods to disable text capitalizations, and display lowercase text

Button width and height inside the ProgressButtonView may vary. Specially width. Allow the user to override it.

Don't know if it was removed already. If not, remove it

setBackgroundColor works fine but setText doesn't
Sample code

public void showOrderCompleted(Order order) {
    int color = ContextCompat.getColor(this, R.color.red);
    btnComplete.setBackgroundColor(color);
    btnComplete.setText(R.string.delivered);
}

Call recycle() to keep the thing efficient

To update UI in UIThread, novoda-espresso-support branch

See this thread

maybe just viewrule.callOnUIThread(...)

Add examples of projects using this lib in README.md file. There are plenty of them.

When there is a backgroundDrawable defined, it overwrites background color resource.
A good solution could be to remove the default background resource.
Or to make the parameter optional in the style method

For example, in ViewWithBackgroundColorTest, 1) succeeds but since it takes a while when 2) is executed, the view still has the progressButtonView_tint_mode text.

1) onView(withText(R.string.progressButtonView_tint_mode)).perform(click());
2) onView(withText(R.string.progressButtonView_visibility_response)).check(matches(isDisplayed()));

Simply waiting is enough to make the tests pass.

users may forget to add the progressBarTintMode attribute when they try to tint the ProgressBar. Maybe a default value like "SRC_ATOP" would make lib usage more intuitive

Update the README to add Kotlin code examples of each code snippet aswell

• Example usage of an XML Drawable as background.
• UI Tests to check it works as expected

Espresso tests had to be disabled. It Would be good to make them work again.

Possible solutions / example repos:
this one seems to work
Link with doc and examples
Sample project that seems to work too

Add two setTypeface methods to ProgressButtonView:

public void setTypeface(Typeface tf) {
    button.setTypeface(tf);
}

public void setTypeface(Typeface tf, int style) {
    button.setTypeface(tf, int style);
}