Hi Makas, Thanks for your suggestion, but when I tried changing it to singleTask, I still could not start my activity. It kept giving me NullPointerException as my activity expects a Bundle. I had even stored the values that I needed from the bundle in my OnSaveInstance method, but dint get it to work.
However when I tried using a service and created a new activity I was able to get my functionality running, but I would like to get the same activity which was created earlier to the foreground. I will look into this again by changing the launchModes and debugging and will let you know if that worked. Thanks, Prajakta On Sat, Mar 13, 2010 at 1:53 AM, Makas Tzavellas <[email protected]>wrote: > Hi Prajakta, > > By default, an activity will be "destroyed" (onDestroyed() will be > called) being called when the "back" button is called. E.g A calls B, > and user presses the "back" button, then activity B will be destroyed. > So from calling activity B again from activity A will create a new > instance of activity B (onCreate() will be called). > > So if I understand you right, you would like to use the same instance > of Activity B instead of recreating a new instance each time the > Activity is called from other activities. Therefore, you *might* want > to use "singleTask" as the Activity's "launchMode". > > You can find out more information from here. > > http://developer.android.com/guide/topics/fundamentals.html#lmodes > > On Mar 13, 9:25 am, Prajakta Shitole <[email protected]> wrote: > > Hi Jeffrey, > > > > Thanks for the suggestion but I have activities and not views. I have > > separate activities which are being called so I am not sure how I will be > > able to achieve the same thing that you have implemented. > > > > Thanks, > > Prajakta > > > > On Fri, Mar 12, 2010 at 10:19 AM, Jeffrey <[email protected]> > wrote: > > > What I have done with success in some of my apps is making several > > > parent views that hold each layout within a table layout, and use the > > > menu buttons to change the visibility of the parent view containing > > > the info you want them to see. Since the view is never really closed, > > > it's state is kept. Just use setVisibility(View.GONE) or View.VISIBILE > > > and it should keep everything good. > > > > > Just make sure that each button press hides all the other parent views > > > or else you will basically end up with two screens showing one after > > > the other. > > > > > On Mar 12, 7:21 am, TreKing <[email protected]> wrote: > > > > On Fri, Mar 12, 2010 at 12:28 AM, Prajakta Shitole < > [email protected] > > > >wrote: > > > > > > > One of my idea was to store the picture and the text view in the > > > service > > > > > and on click of a menu button navigate to another activity which > will > > > > > connect to the service and draw the stored pictures, text views in > its > > > > > activity. > > > > > > I haven't done anything like this but this seems like what you would > want > > > to > > > > do. > > > > > > ------------------------------------------------------------------------------------------------- > > > > TreKing - Chicago transit tracking app for Android-powered > deviceshttp:// > > > sites.google.com/site/rezmobileapps/treking > > > > > -- > > > You received this message because you are subscribed to the Google > > > Groups "Android Developers" group. > > > To post to this group, send email to > [email protected] > > > To unsubscribe from this group, send email to > > > [email protected]<android-developers%[email protected]> > <android-developers%[email protected]<android-developers%[email protected]> > > > > > 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 [email protected] > To unsubscribe from this group, send email to > [email protected]<android-developers%[email protected]> > 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 [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-developers?hl=en
