thanks, it explains a lot, but the questions remain 1. assuming the "task killer app" are "legitimate", how come it shows "apps that are open" and i can just click "kill apps" to close them.... 2. even if the apps are "dormant" instead of "open", why wouldnt android just close them automatically... 3. do these "dormant" or "open" apps use up the battery ?
receiving email while listening to music seems to be what multitasking is all about but otherwise, for example, when you're done browsing and finished with your messages why would the browser and messaging apps be dormant (if not considered "open" )... you can still receive message even if the msging app is closed. On Sep 28, 8:25 pm, lbcoder <[email protected]> wrote: > It is not a question of simply *loading* the application... it is a > matter of multiple applications or services actually *doing work* at > the same time... sortof -- on uni-core processors it is impossible, > but the scheduler switches between processes SO FAST and FREQUENTLY > that you can't tell the difference (kind of like how your TV shows ~30 > frames per second, but your brain blends them into smooth motion). > > Now first, due to screen size, it is impractical to have multiple > *applications* running at the same time, and in fact, Android doesn't > allow this - applications shut down into a dormant state (and may even > be unloaded if resources are required) when they are obscured, so the > multitasking is more in the service domain, i.e. synchronization, > playing music, etc. > > The most obvious use of concurrent processing (aka multitasking) is > in, for example, synchronization. When you are running some program, > for example google maps, it will STILL synchronize with the servers > and you will get email notifications, despite some other program being > running. You'll also note similar things happening when you play music > using your media player... though the UI is unloaded, the player > service continues to run in the background, so you can start your > music player and then switch to some other application, and your music > continues to play without interruption. > > THAT is what multitasking is about. > > On Sep 28, 12:07 am, sonisoe <[email protected]> wrote: > > > > > am just a regular user, still dont quiet understand wht this multi- > > tasking is all about... i mean on pc you can open different apps/ > > windows so you dont have re-load particular apps when you want to > > switch back to these apps 'coz reloading takes a bit more time for the > > apps to open and - if the apps arent on the desk-top window - > > inconvenient 'coz you have to go to the start menu, go through list > > and sub-lists to find your apps... > > > but on mobile-phones (android in this case), dont feel the difference > > in re-loading time even if the apps are "closed", and, unlike the palm > > pre, its just like on pc which is inconvenient 'coz you have to open > > "app menu", find your apps, and tap to open... it doesnt actually feel > > like we're multitasking... > > > in fact multi-tasking only drains the battery... btw, am new to > > android just got my htc hero, and downloaded a "task killer app", i > > was way more surprised that when i opened this task-killer, sooooooo > > many apps were open.... so in short, multi-tasking isnt really > > necessary ? > > > (i still dont understand what "application management" in android is > > for otherthan "clearing data", but i'm afraid if i "clear data" for > > gmail, for example, it may erase all my mail in my handset) --~--~---------~--~----~------------~-------~--~----~ You received this message because you are subscribed to the Google Groups "Android Discuss" group. To post to this group, send email to [email protected] To unsubscribe from this group, send email to [email protected] For more options, visit this group at http://groups.google.com/group/android-discuss?hl=en -~----------~----~----~----~------~----~------~--~---
