[Soot-list] Why FlowDroid invokes one activity multiple times in dummyMainMethod()

[Xinxin Jin]

​In addition, I also observed other entry point methods ​are invoked
multiple times. For example, "BaseActivity: onStart()" is invoked in
multiple statements of dummyMain:

virtualinvoke $r4.<BaseActivity: void onStart()>();
virtualinvoke $r14.<BaseActivity: void onStart()>();
virtualinvoke $r17.<BaseActivity: void onStart()>();
...
...

Thanks.

On Thu, Feb 12, 2015 at 2:59 PM, Xinxin Jin <xinxinjin89 at gmail.com> wrote:

> Hi Wei,
>
> Sorry for the confusion. What I mean is the init method "SessionLivestreamActivity:
> void <clinit>()>" is invoked multiple times. In the generated dummyMain,
> I can see a lot of statements like:
>
> $r63 = new com.google.samples.apps.iosched.ui.SessionLivestreamActivity
> $r115 = new com.google.samples.apps.iosched.ui.SessionLivestreamActivity
> $r121 = new com.google.samples.apps.iosched.ui.SessionLivestreamActivity
> $r205 = new com.google.samples.apps.iosched.ui.SessionLivestreamActivity
> ...
> ...
>
> Is it normal ?
> Thanks very much.
>
> On Thu, Feb 12, 2015 at 2:51 PM, Wei Yang <davidyoung8906 at gmail.com>
> wrote:
>
>> Hi! Xinxin,
>>      Your question is not very clear. Are you referring to call graph
>> when you say " dummyMainMethod() invokes an Activity called
>> SessionLivestreamActivity "? Activity normally has multiple entry point
>> methods (e.g. onCreate(), onStop() ), so it is likely that in an call
>> graph, the same activity could appear on several CG nodes.
>>
>> Thanks!
>>
>> Best wishes,
>> David
>>
>> 2015-02-12 14:35 GMT-06:00 Xinxin Jin <xinxinjin89 at gmail.com>:
>>
>>> Hello,
>>>
>>> I am running FlowDroid on one Android app, and found dummyMainMethod()
>>> invokes an Activity called SessionLivestreamActivity *14* times.
>>> ​In my mind, each activity is an entry point of an app. So should not
>>> dummyMainMethod() only invokes each entry point once ?
>>> From my experiments, most of the time the activity class is indeed
>>> invoked just once. So I am confused in which particular situation the
>>> activity class will be invoked multiple times ?​
>>>
>>> ​Thank you very much !​
>>>
>>>
>>> --
>>> Xinxin
>>>
>>> _______________________________________________
>>> Soot-list mailing list
>>> Soot-list at CS.McGill.CA
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>>>
>>>
>>
>
>
> --
> Xinxin
>



-- 
Xinxin
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