I've got a NPE when updating the visibility of LoadingDots to Visible.

Stacktrace:
java.lang.NullPointerException: Attempt to invoke virtual method 'boolean android.animation.ValueAnimator.isRunning()' on a null object reference at com.eyalbira.loadingdots.LoadingDots.startAnimationIfAttached(LoadingDots.java:167) at com.eyalbira.loadingdots.LoadingDots.setVisibility(LoadingDots.java:148)

I have LoadingDots_auto_play=false. I checked the code and found the issue here:
private void startAnimationIfAttached() { if (mIsAttachedToWindow && !mAnimation.isRunning()) { mAnimation.start(); } }

It seems that mAnimation is null when autoplay is false. You've added check whether mAnimation is null anywhere you are invoking methods on it but here :)

Hey @EyalBira, thank you for creating loading-dots, this lib is awesome 🎉

@MilanVucic and I work with a company called CometChat creating tutorials. We are collaborating on a Kotlin tutorial called "Adding animated typing indicators to your Kotlin chat app" (exact title TBD) and we used loading-dots for the typing indicators!

Here's a snippet:

typingLayout is just a piece of the layout that contains the TextView for showing the people who are typing as well as this neat “3 dots jumping up and down” animation, for which I used this awesome 3rd party library. You can create your own too, but it’s just easier to use this one. If nobody is typing, the layout hides, and if people are typing, we simply format the message to resemble that state :

When we publish the tutorial in the coming days, is there any chance we can add a link to the README as a real-world (ish) example of loading-dots?

Is there a way to fill the whole width with "dots"? Currently I'm setting the dots by setting app:LoadingDots_dots_count="12" but is there a way to fill the entire remaining space?

The following error started when using sdk version 27:

error: duplicate value for resource 'attr/font' with config ''.

error: resource previously defined here.
Message{kind=ERROR, text=error: resource previously defined here., sources=[gradle/caches/transforms-1/files-1.1/loading-dots-1.0.2.aar/ddd106d4303848c11195e14406b44fa8/res/values/values.xml:4:5-61], original message=, tool name=Optional.of(AAPT)}

I'm trying to add this library to a project whose min SDK is 15 and testing it with an old phone with SDK 18 installed the animation does not work at all. The dots appear but there is no movement.

Any idea?