Set B's finishOnTaskLaunch true. It may help you. On Jun 17, 2:23 am, Kostya Vasilyev <[email protected]> wrote: > Does anyone know if there is a way to start a new activity into an existing > task, so it becomes the new task root if it doesn't already exist within the > task? > > It might look like this: > > Let's say, the package has two activities, A (which is a LAUNCHER / MAIN) > and B (which is not). > > Now at some point, the task stack has either A, and B on top of it, or just > B all by itself. > > I'd like to launch A from outside the task (a status bar notification, etc.) > so that: > > - If A already exists with the task (A -> B), I'd like B to be finished. > > Settting FLAG_ACTIVITY_NEW_TASK | FLAG_ACTIVITY_CLEAR_TOP or > clearTaskOnLaunch does this quite nicely. > > - If the task only has B, I'd like B to also be finished, and A to become > the new task root. > > I'm having trouble finding anything that would let me implement this second > case. > > It seems to me that clearTaskOnLaunch for A in the manifest should do this, > but it doesn't: B stays within the task as its root, and A is launched on > top of it. > > Am I missing something and it can be done, or is this really not possible > with just something in the manifest / intent flags? > > Thanks, > -- Kostya
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