72.5 Checking for Freeform Support

As outlined earlier in the chapter, Google is leaving the choice of whether to enable freeform multi-window mode to the individual Android device manufacturers. Since it only makes sense to use freeform on larger devices, there is no guarantee that freeform will be available on every device on which an app is likely to run. Fortunately all of the freeform specific methods and attributes are ignored by the system if freeform mode is not available on a device, so using these will not cause the app to crash on a non-freeform device. Situations might arise, however, where it may be useful to be able to detect if a device supports freeform multi-window mode. Fortunately, this can be achieved by checking for the freeform window management feature in the package manager. The following code example checks for freeform multi-window support and returns a Boolean value based on the result of the test:

fun checkFreeform(): Boolean {

   &...