How is it not an answer?
On Tue, Aug 4, 2015, 9:49 AM pedr0 <[email protected]> wrote:
> This is not quite an answer ... is it ?
>
>
> On Tuesday, August 4, 2015 at 3:40:53 PM UTC+1, MagouyaWare wrote:
>
>> The documentation does not state that each time the activity is created
>> it will also create a new process. From your email, the documentation
>> states:
>>
>> "If the name assigned to this attribute begins with a colon (':'), a new
>> process, private to the application, is created when it's needed and the
>> activity runs in that process"
>>
>> The way I read this (maybe I'm wrong, but I don't think so), it means the
>> activity with the process name will have a process separate from other
>> activities in your app. If it needs to create a new process it will...
>> "when it's needed." If it can reuse that same process that it created
>> before, which is separate from all other activities in your app, it will do
>> that because it doesn't NEED to create a new one.
>>
>>
>>
>> *"Anyway that gives me some troubles since, for no good reasons, a
>> System.exit(0) is called at the end of the onDestroy() thus terminating the
>> whole VM and preventing the activity from being created and restarted
>> again, such bit was commented out during the tests I have made to make it
>> possible for me to gather the traces and debug the issue."*
>> Ummm..... why in the world are you doing this? You should NEVER need to
>> call System.exit() in an Android app. That is the sign of a poorly designed
>> app.
>>
> On Tue, Aug 4, 2015 at 4:12 AM pedr0 <[email protected]> wrote:
>>
> Hi all,
>>>
>>> I am using such field in the AndroidManifest file to unsure that an
>>> activity it's started as a separate process each time, I am using it in
>>> this way :
>>>
>>>
>>> <activity ....
>>> android:process=":testprocess"
>>> ...
>>> />
>>>
>>> Following the Android documentation the colon ":" should mean the
>>> activity will be started in a new private process each time, or at least it
>>> will not share the process with anybody else, quoting from the Android
>>> website:
>>>
>>> "If the name assigned to this attribute begins with a colon (':'), a new
>>> process, private to the application, is created when it's needed and the
>>> activity runs in that process"
>>>
>>> What I see is that this is not happening all the time, actually it looks
>>> like the process is recycled to recreate the same activity, what I have
>>> done is to add a print right at the top of pretty much every on* activity's
>>> methods:
>>>
>>> I am printing the object id and the process id obtained through
>>>
>>> android.os.process.myPid();
>>>
>>> Yes, I did not need it since the process id is printed out each time but
>>> I've realized it just now :-)
>>>
>>>
>>> [...]
>>> I/user ( 9428): onCreate 9428 Object Activity@41b5da18
>>> I/user ( 9428): onStart 9428 Object Activity@41b5da18
>>> I/user ( 9428): onResume 9428 Object Activity@41b5da18
>>> I/user ( 9428): onStop 9428 Object Activity@41b5da18
>>> I/user ( 9428): onStart 9428 Object Activity@41b5da18
>>> I/user ( 9428): onResume 9428 Object Activity@41b5da18
>>> I/user ( 9428): onStop 9428 Object Activity@41b5da18
>>> I/user ( 9428): onStart 9428 Object Activity@41b5da18
>>> I/user ( 9428): onResume 9428 Object Activity@41b5da18
>>> I/user ( 9428): onStop 9428 Object Activity@41b5da18
>>> I/user ( 9428): onStart 9428 Object Activity@41b5da18
>>> I/user ( 9428): onResume 9428 Object Activity@41b5da18
>>> I/user ( 9428): onStop 9428 Object Activity@41b5da18
>>> I/user ( 9428): onStart 9428 Object Activity@41b5da18
>>> I/user ( 9428): onResume 9428 Object Activity@41b5da18
>>> I/user ( 9428): onStop 9428 Object Activity@41b5da18
>>> I/user ( 9428): onStart 9428 Object Activity@41b5da18
>>> I/user ( 9428): onResume 9428 Object Activity@41b5da18
>>> I/user ( 9428): onStop 9428 Object Activity@41b5da18
>>> I/user ( 9428): onDestroy 9428 Object Activity@41b5da18
>>> I/user ( 9428): onCreate 9428 Object Activity@41b5cad8 <-- New
>>> activity created using the old process
>>> I/user ( 9428): onStart 9428 Object Activity@41b5cad8
>>> I/user ( 9428): onResume 9428 Object Activity@41b5cad8
>>> [...]
>>>
>>>
>>> Such behavior is not always consistent, it could as it could not happen
>>> and sometimes the activity is really started in a new process.
>>>
>>>
>>> Anyway that gives me some troubles since, for no good reasons, a
>>> System.exit(0) is called at the end of the onDestroy() thus terminating the
>>> whole VM and preventing the activity from being created and restarted
>>> again, such bit was commented out during the tests I have made to make it
>>> possible for me to gather the traces and debug the issue.
>>>
>>>
>>> Unfortunately I can't change such incorrect application behavior
>>> nevertheless I wonder if I have some other tricks to play from an
>>> application point of view which enables the activity to be restarted in a
>>> new process each time.
>>>
>>> I wouldn't dislike for the sake of my own knowledge to be pointed where
>>> such behavior is implemented, where is the Activity created and started and
>>> where is decided to start it from a new process or not ?
>>>
>>>
>>>
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