Event Handler Mit App Inventor. Event handler for dragged events. Create your own android apps by dave wolber hal abelson liz looney.
Something like the examples shown in the tutorials chapter 16. There is nothing like the event handler for when a phone message is received. It is not reasonable to expect an eventhandler for what does not exist.
Programming your app to make decisions chapter 21.
After before or when the event happens can all call different event handlers. On the first call within a given drag the previous coordinates are the same as the starting coordinates. A button has been pressed the phone is being shaked the user is dragging her finger over a canvas etc. Programming your app to make decisions chapter 21.
