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I am trying to figure the best way to control 'sets' of Activities deployed from an initial 'launch' Activity.

A>B(Launches either C1, C2 or C3) >C1>D1>E1>F1 ... etc >C2>D2>E2>F2 ... etc >C3>D3>E3>F3 ... etc

I require the behaviour whereby a 'home' button is available on all x1, x2 and x3 Activities. When this 'home' button is pressed on a Cx Activity, it takes the user back to B, however if pressed on either Dx, Ex, Fx etc Activity, it takes them back to the Cx Activity.

If I make my C Activity declarations SingleTop, how can I make them unique (in terms of Intents) from the subsequent D, E, F etc. Activities?

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suppose at this time your activity stack is this

{c > d > e > f}

f is top order activity if you just want to bring up front the activity c then you should use the IntentFlag

intent.setFlag(Intent.FLAG_ACTIVITY_REORDER_TO_FRONT)}

and if you want to also clear activity that in stack which above the activity c then you should use IntentFlag

intent.setFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);
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But what do I launch 'C' (proposed 'home' screen) as in the first place? NewTask?

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