How do you add or remove clips at runtime with Mecanim?

Symptoms

• I want to add or remove animation clips in the animation controller at runtime.

Cause

You are trying to do one of the following:

• Set up a new animation clip at runtime using Mecanim.
• Change or Remove an animation clip during runtime.

Resolution

It is not supported to add or remove clips at runtime with Mecanim, but you can override them with AnimatorOverrideController to dynamically change the animation clips.

Please see this article Animator state is reset when AnimationClips are replaced using an AnimatorControllerOverride which describes how the AnimatorOverrideController is used to override clips from a controller to change the dynamics of animations.

More Information

Also, watch Playable API that will allow you to play clips on Animator components without a controller.

This article applies to Unity version 5.1.1f1 and higher