Comment inline. -- Alive C. Kuo, Front-end Eng., Mozilla Corp. (Taiwan, Taipei)
Randy Lin <r...@mozilla.com> 於 2013/5/13 下午5:47 寫道： > 3. Handle the application switch case, i.e one application want speaker on > with headphone pluged-in, switch to another one, but there is no option for > users to switch back to headphone. this object may need to tracking the > application usage and recover it. If you have a speakerOn function I assume that you will also have a speakerOff function. Then in those app who wants to control the state of speaker, they should listen to 'visibilitychange' event to know the foreground/background state change(application switch you mean), and then according to that, enable or disable speaker. The only thing I wonder: there may exist one race condition, if App A is brought to background after App B is brought to foreground. When that happens, the speaker(I guess it's global?) will be disabled by App A when it gets notified it's now background after App A enables it. > > Randy > _______________________________________________ > dev-b2g mailing list > dev-b2g@lists.mozilla.org > https://lists.mozilla.org/listinfo/dev-b2g _______________________________________________ dev-b2g mailing list dev-b2g@lists.mozilla.org https://lists.mozilla.org/listinfo/dev-b2g
