Good info. This actually explains some of the "buggy" behavior I've seen, not on my own apps, but on various others on my own devices. Especially when I apply an update and then the screen widget stops working with an "App not installed" error popping up.
On Sunday, June 3, 2012 10:57:37 PM UTC-4, Dianne Hackborn wrote: > > This is an overview I wrote last year on the things you shouldn't change > in your app if you want updates to go smoothly: > http://android-developers.blogspot.com/2011/06/things-that-cannot-change.html > > On Sun, Jun 3, 2012 at 4:09 AM, Kostya Vasilyev <kmans...@gmail.com>wrote: > >> >> 03.06.2012 14:22, David Ross написал: >> >> Sadly, this does not work at all well. Just as when you have a widget >>> and you uninstall the app you get the horrid "Problem Loading Widget" >>> message, the same thing happens when the user accepts the update from >>> the Play site. >>> >> >> Never seen this with my own widgets, or other installed widgets on any of >> my phones. >> >> Now, if the updated package uses a different class name for "the same" >> widgets, the home screen won't know this, and the user will get the message >> you describe. >> >> So, pick those class names carefully, and don't change them :) >> >> Besides, package updates happen all the time during development >> (run/debug), and they doesn't cause existing widgets to go sour. >> >> In fact, the launcher will update all of them just after the installation >> is complete to ensure consistency with new code and assets. >> >> >> Also watch out for irritating things like ghost widgets on lower API >>> levels (1.6) when unexpected things happen like there's not enough >>> home screen space for your widget. I keep my own track of the widgets >>> so I can detect and ignore ghost widgets. >>> >> >> I've seen ghost widget ids on my Galaxy Nexus with 4.0.4, so don't throw >> that code away just yet :) >> >> >> -- >> Kostya Vasilyev >> >> >> -- >> You received this message because you are subscribed to the Google >> Groups "Android Developers" group. >> To post to this group, send email to android-developers@** >> googlegroups.com <android-developers@googlegroups.com> >> To unsubscribe from this group, send email to >> android-developers+**unsubscr...@googlegroups.com<android-developers%2bunsubscr...@googlegroups.com> >> For more options, visit this group at >> http://groups.google.com/**group/android-developers?hl=en<http://groups.google.com/group/android-developers?hl=en> >> > > > > -- > Dianne Hackborn > Android framework engineer > hack...@android.com > > Note: please don't send private questions to me, as I don't have time to > provide private support, and so won't reply to such e-mails. All such > questions should be posted on public forums, where I and others can see and > answer them. > > -- You received this message because you are subscribed to the Google Groups "Android Developers" group. To post to this group, send email to android-developers@googlegroups.com To unsubscribe from this group, send email to android-developers+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/android-developers?hl=en
