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Androidology - Part 2 of 3 - Application Lifecycle

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Part 2 of 3 in an overview series on the Android platform. In this segment, Mike explains the application and process lifecycle as a user navigates through different applications.

Channel: Science & Technology
Uploaded: November 12, 2007 at 4:50 am
Author: androiddevelopers

Length: 08:15
Rating: 4.64
Views: 80184

Tags: android  development  mobile  

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Video Comments

wiicow (June 12, 2008 at 9:10 pm)
I sure hope it dosn't cost that much. other wise it can take a backseat with the iphone as far as i'm conserned.
pbpenguin5 (June 5, 2008 at 12:34 am)
ok thanks
morenoh149 (June 4, 2008 at 5:18 pm)
lol, I think he meant the hardware it'll run on. A phone with these capabilities may cost $400+. There are rumors that the first ones will be available early 2009.
Mastakilla91 (June 3, 2008 at 12:38 pm)
its open source -.-' ^^
pbpenguin5 (May 30, 2008 at 9:16 pm)
ok i do love this product right now, but does anyone know how much one of these will cost?
davidmaxwaterman (December 28, 2007 at 7:29 am)
ah, the 'extra credits' part of the NotepadCodeLab helps a lot. There's nothing like actual code and a debugger to explain things :)
davidmaxwaterman (December 28, 2007 at 2:17 am)
when the user's looking at the maps application and 'presses' back, why isn't there any state saved for the maps application? where does the maps application 'go'? what if the user had changed something that they would like to see again next time they launch maps? is this a different scenario and so the app needs to save its state in some other way?
davidmaxwaterman (December 27, 2007 at 2:12 pm)
..no, I'm wrong. The mail 'activity' that's in the activity manager part of the system process is the 'mail list' activity, and it's created *before* the mail process itself. If it was from some previous instance of the mail process it would have some saved state on it, but it doesn't....weird.Either I'm very confused, or it's a 'typo' on the video (or both).
davidmaxwaterman (December 27, 2007 at 2:06 pm)
Why does the activity manager in the system process have the mail icon at the start, when there's no mail process? Is it because the mail application has a service which has been killed - and will presumably be launched again when it is time to check mail? If that's the case, why doesn't it have any state saved in it? ...but then there's nothing in the 'mail process' when it's created (should have something to represent a server along side the activity, no?).It's confusing me. Any ideas?
samunai (December 4, 2007 at 7:13 pm)
I know, these guys know lot about me and their information hunger is getting bigger and bigger. BUT I LOVE GOOGLE!!!11 The applications they are developing are very good documented, so everyone can learn their products fast => google gets more popular...

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