Create a Countdown Timer App || MIT App Inventor |
TheClockcomponenthasakeyevent,Clock.Timer,whichactsasanalarmclock,andonethatcangooffrepeatedly(unlessyouturnitoff).TheClock.,TheClockTimerrequiresaleapoffaith.ItrequiresyoutofallofftheendofyourcurrentEventblock,andacceptthatcontrolwillresumeinaCl...。參考影片的文章的如下: