Java Codes for LayoutSheet Extension for MIT App Inventor 2
Changes in v3: Cancel option has been fixed, Modified the height to allow to be read in percentages, Border radius added to dialog
NOTE : Republishing this extension without giving link of the repo is prohibited
Docs : Download Extension : https://www.mediafire.com/file/u3itmd1fcctuwrh/LayoutSheet_v3.aix/file