hi all,

for example,I have three activity now,
a, b and c,
a is start point of activity lifecycle, and can go to b or c,
and then assume go to b from a and close a,
and then go to c from b but will not close b,
and this time, I want to check whether b is start(create) or not,

if b start, I want to close b and then go to a,
if b doesn't start(possible will go to c from a doesn't via b),
it will also go to a but do nothing for b

how can I do for that?

thanks!!!


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