[android-developers] Re: How do you manipulate content in an Activity from an external class or another Activity?
Or you could register a receiver in one activity and post Intents from another. That's how I do it. -- 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
Re: [android-developers] Re: How do you manipulate content in an Activity from an external class or another Activity?
Or you could use the View-Adapter pattern. The adapter is responsible for the data model changes and informs the view to redraw via notifications. -- 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
Re: [android-developers] Re: How do you manipulate content in an Activity from an external class or another Activity?
Or give the other class a Java interface reference for callbacks, while implementing the interface in the Android-aware code. 27.12.2010 0:00, Frank Weiss пишет: Or you could use the View-Adapter pattern. The adapter is responsible for the data model changes and informs the view to redraw via notifications. -- 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 -- Kostya Vasilyev -- WiFi Manager + pretty widget -- http://kmansoft.wordpress.com -- 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
[android-developers] Re: How do you manipulate content in an Activity from an external class or another Activity?
On Dec 21, 2:30 pm, Tobiah t...@tobiah.org wrote: Can one Activity manipulate the Views of another? Even with a class that is external to the Activity, it seems that I need to pass a pointer to the View in question around. I have a subclass of Application that I could use to keep the View pointers in. Will that work? Does it sound necessary? The other suggestions given in this post are better than your original concept for several reasons. For one thing a View is a heavy weight object for keeping in memory just to accomplish inter-Activity communication. In general you want to update the Model, not the View. When the Activity is re-started again it can update the View. For another thing, depending on the launchMode, you might have more than one instance of the this Activity (and thus its View). Thanks, Tobiah -- 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
Re: [android-developers] Re: How do you manipulate content in an Activity from an external class or another Activity?
It's also not very good to keep view references in the application because of their different lifetimes. A view is basically only good for as long as its Activity. The application object lives as long as the process, that is, much longer. -- Kostya Vasilyev -- http://kmansoft.wordpress.com 27.12.2010 1:18 пользователь jotobjects jotobje...@gmail.com написал: On Dec 21, 2:30 pm, Tobiah t...@tobiah.org wrote: Can one Activity manipulate the Views of another? Even with a class that is external to the Activity, it seems that I need to pass a pointer to the View in question around. I have a subclass of Application that I could use to keep the View pointers in. Will that work? Does it sound necessary? The other suggestions given in this post are better than your original concept for several reasons. For one thing a View is a heavy weight object for keeping in memory just to accomplish inter-Activity communication. In general you want to update the Model, not the View. When the Activity is re-started again it can update the View. For another thing, depending on the launchMode, you might have more than one instance of the this Activity (and thus its View). Thanks, Tobiah -- 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.comandroid-developers%2bunsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/android-developers?hl=en -- 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
