forceFallbackDrawMethod

A flag to force the fallback draw method, which may be useful in testing and debugging. The fallback is normally used only on API levels 21..28 whenever the library is unable to access the (hidden) classes and methods necessary for the primary method.

This flag should be set as early as possible, e.g., in an Application subclass.

This is a passive flag; changing it does not recreate existing library shadows. If it needs to be toggled at runtime, those shadows will need to be toggled as well. In order to ensure that the library's internals sync correctly, all active shadows in a given hierarchy must be disabled all at once first. Recreating the Activity or Dialog might be the easiest way to handle this.