[android-developers] Re: How to close all activities in Activity stack and start a new one
What just came in my mind, if it would suite your requirements: Start activities with startActivityForResult. When an activity started, register for broadcast and send the broadcast from your timer service. The last started activity recieves broadcast and calls its finish with result code, which you passes back to previous activity in stack. Once activity receives the code it also calls its finish passing result code to its previous etc. The last activity (A) starts your (E). It might be better to put the logic in one place, either in activity class, the other will inherit, or in deligate class, if you use different kind of activities (list, map etc) and cannot inherit single one. Oh, yeah, and dont forget to unregister broadcast once an activity is paused. I guess, you cannot use this approach, if top activity in the stack is pause, therefore, you might try to use preferences to put a flag close there. When activity is resumed it can check the flag and call its finish with result code to inform parent activities to close. It would be interested if anyone knows other way. Regards, nakvic On Oct 9, 11:11 am, Jiang webs...@yahoo.cn wrote: When some activities is created, such as A-B-C-D, and in a timer, I need to close all activities in Ativity stack in the order D-C-B-A (the timer don't know what activities have been created), and then start a new Activity E. How to implement this feature? Thanks. -- 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 to close all activities in Activity stack and start a new one
The Nope, sorry response from Dianne was her overly terse way of saying that you cannot implement this feature, since it is not supported -- nor is it likely to ever be supported. Why? Because it is not according to the design of the Activity lifecycle. Indeed: 9 times out of 10, when a developer asks a question like yours, a little further probing reveals that the developer does not really need to do such a thing after all. The illusion that you do need to do it will evaporate upon close study of http://developer.android.com/reference/android/app/Activity.html#ActivityLifecycle. My suspicion is that all you really need to do is call finish() on each Activity, popping them off the stack in the natural order (that is why it is a stack, after all). Then start E. Actually, I think Dianne would say not 9 times of 10, but 10-x times out of 10, where x is some very small number, like the probability of being hit by lightning on a clear day during the dry season while standing on the floor of the Grand Canyon on one foot while whistling Dixie;) On Oct 9, 2:11 am, Jiang webs...@yahoo.cn wrote: When some activities is created, such as A-B-C-D, and in a timer, I need to close all activities in Ativity stack in the order D-C-B-A (the timer don't know what activities have been created), and then start a new Activity E. How to implement this feature? Thanks. -- 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
