Hi, I also have a basic problem? How could I share a object reference, e.g., a class instance, between two activities. In the Bundle's member methods, no method support putting object reference.
Thanks On Feb 15, 10:57 pm, Tote <[email protected]> wrote: > Typically you call your current activity's startActivity() method to > switch to another activity. That method can accept an instance of > Intent class, which in turn enables you to put some data in the intent > object before you call startActivity. Check out the documentation of > Bundle class and you'll see that it's got a lot of put... methods (and > the corresponding get... methods, too). So for example you could call > putIntArray method which adds an int array to the bundle. E.g.: > > int[] ia = {1, 2, 3}; > > Intent i = new Intent(); > Bundle b = i.getExtras(); > b.putIntArray("myIntArray", ia); > startActivity(i, MyActivity2.class); > > Similarly, on the receiving end you can use getIntArray to get your > data. The disadvantage of this solution is that whenever the data > changes on one end you've got to update the other end, too, because it > doesn't happen automatically. > > Another approach would be to use a singleton to store information that > shall survive activity changes. In this case both ends access the same > information and since no two activities can live at the same time you > don't even need to bother with synchronization issues. > > On Feb 15, 11:58 am, madcoder <[email protected]> wrote: > > > Could you give a more detailed example - I too would like to see how > > an array (of ints, for example) can be accessed in activity 2 from > > activity one. As it is now, I'm loading that data every time I start > > a new activity - and it's quite slow! > > > Thanks > > > On Feb 14, 7:32 pm, Ganesan V <[email protected]> wrote: > > > > U can use Indent class of MyActivity from MyActivity2. > > > > Ganesh. > > > > On Sat, Feb 14, 2009 at 2:05 AM, Alex55 <[email protected]> wrote: > > > > > Hello guys, > > > > > I have a very basic question regarding Activities in Android. > > > > > Can I share data types a cross Activities in Android? > > > > > Let's say I have 2 activities, MyActivity.java and MyActivity2.java. I > > > > have declared some Strings and Arrays on MyActivity that I would like > > > > to access from MyActivity2, is this possible? If so, how can I > > > > accomplish this? > > > > > I know its a very basic question, but believe it or not I've had a > > > > hard time figuring this one out! > > > > > Many thanks for your prompt response, > > > > > Alex > > --~--~---------~--~----~------------~-------~--~----~ You received this message because you are subscribed to the Google Groups "Android Beginners" 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-beginners?hl=en -~----------~----~----~----~------~----~------~--~---
