[android-developers] Re: Relationships among apps, tasks, and activities
some more thoughts...
What I've said about taskAffinity and launchMode attributes, in
general, makes sense when the activities are in the same app since the
default value of taskAffinity will be set to the package name. When
the activities across apps activate one another, just the launch mode
value tells if the launched activity would be the root of the new
task. Again, this is because the package names of the apks would be
different.
On Sun, May 3, 2009 at 5:17 AM, devi prasad wrote:
> Well, I DO think that Android documentation speaks about tasks and
> their affinities, contrary to what I said previously :)
>
> I defined a non-default value for the taskAffinity attribute of the
> activity in question:
> android:label="ChildActivity:SingleTaskActivity"
> android:launchMode="singleTask"
> android:taskAffinity="com.robosoft.example.taskByIteself">
>
>
> and the activity gets to run in a separate task.
>
> Both 'taskAffinity' and 'launchMode' are necessary if we want to have
> an activity run in a separate task. Alternatively,
> Intent.FLAG_ACTIVITY_NEW_TASK may be used in the intent, in case only
> 'taskAffinity' is mentioned in the manifest.
>
> This is really interesting :)
>
>
> On Sat, May 2, 2009 at 1:37 PM, devi prasad wrote:
>> Hi, Dianne: this is the portion of the dump that I get by executing
>> "adb shell dumpsys activity" :
>> --
>> Activities in Current Activity Manager State:
>> Task{3 com.robosoft.example}
>> clearOnBackground=false numActivities=3 rootWasReset=true
>> affinity=com.robosoft.example
>> intent=Intent { action=android.intent.action.MAIN
>> categories={android.intent.category.LAUNCHER}
>> flags=0x1020
>>
>> comp={com.robosoft.example/com.robosoft.example.AppRootActivity} }
>>
>> History #3:
>> HistoryRecord{434d2090
>> {com.robosoft.example/com.robosoft.example.SingleTaskActivity}}
>> packageName=com.robosoft.example processName=com.robosoft.example
>> app=ProcessRecord{43516130 181:com.robosoft.example/10018}
>> Intent { flags=0x1000
>> comp={com.robosoft.example/com.robosoft.example.SingleTaskActivity} }
>>
>> History #2:
>> HistoryRecord{434fb848
>> {com.robosoft.example/com.robosoft.example.ChildActivityOfRoot}}
>> packageName=com.robosoft.example processName=com.robosoft.example
>> app=ProcessRecord{43516130 181:com.robosoft.example/10018}
>> Intent {
>> comp={com.robosoft.example/com.robosoft.example.ChildActivityOfRoot} }
>>
>> History #1:
>> HistoryRecord{434fe2e8
>> {com.robosoft.example/com.robosoft.example.AppRootActivity}}
>> packageName=com.robosoft.example processName=com.robosoft.example
>> app=ProcessRecord{43516130 181:com.robosoft.example/10018}
>> Intent { action=android.intent.action.MAIN
>> categories={android.intent.category.LAUNCHER}
>> ---
>> As I gather, this shows that all three activities are part of the same
>> task, even though I use FLAG_ACTIVITY_NEW_TASK while starting
>> 'SingleTaskActivity' and mark it with 'singleTask' launch mode. The
>> intent flag value (0x1000) indicates this in the top most activity
>> entry above.
>>
>> I cannot explain this behavior with my current understanding derived
>> from the documentation. What am I missing here?
>>
>> thanks
>>
>>
>> On Sat, May 2, 2009 at 10:50 AM, devi prasad wrote:
>>> Hi, Dianne: ok, thanks.
>>> I use the following functions to determine the task id and if it is
>>> the root of a task:
>>>
>>> activity.getTaskId();
>>> activity.isTaskRoot();
>>>
>>> I used logcat looking for useful hints. Let me see if I understand it
>>> better if I use
>>> "adb shell dumpsys activity"
>>>
>>
>
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[android-developers] Re: Relationships among apps, tasks, and activities
Well, I DO think that Android documentation speaks about tasks and
their affinities, contrary to what I said previously :)
I defined a non-default value for the taskAffinity attribute of the
activity in question:
and the activity gets to run in a separate task.
Both 'taskAffinity' and 'launchMode' are necessary if we want to have
an activity run in a separate task. Alternatively,
Intent.FLAG_ACTIVITY_NEW_TASK may be used in the intent, in case only
'taskAffinity' is mentioned in the manifest.
This is really interesting :)
On Sat, May 2, 2009 at 1:37 PM, devi prasad wrote:
> Hi, Dianne: this is the portion of the dump that I get by executing
> "adb shell dumpsys activity" :
> --
> Activities in Current Activity Manager State:
> Task{3 com.robosoft.example}
> clearOnBackground=false numActivities=3 rootWasReset=true
> affinity=com.robosoft.example
> intent=Intent { action=android.intent.action.MAIN
> categories={android.intent.category.LAUNCHER}
> flags=0x1020
>
> comp={com.robosoft.example/com.robosoft.example.AppRootActivity} }
>
> History #3:
> HistoryRecord{434d2090
> {com.robosoft.example/com.robosoft.example.SingleTaskActivity}}
> packageName=com.robosoft.example processName=com.robosoft.example
> app=ProcessRecord{43516130 181:com.robosoft.example/10018}
> Intent { flags=0x1000
> comp={com.robosoft.example/com.robosoft.example.SingleTaskActivity} }
>
> History #2:
> HistoryRecord{434fb848
> {com.robosoft.example/com.robosoft.example.ChildActivityOfRoot}}
> packageName=com.robosoft.example processName=com.robosoft.example
> app=ProcessRecord{43516130 181:com.robosoft.example/10018}
> Intent {
> comp={com.robosoft.example/com.robosoft.example.ChildActivityOfRoot} }
>
> History #1:
> HistoryRecord{434fe2e8
> {com.robosoft.example/com.robosoft.example.AppRootActivity}}
> packageName=com.robosoft.example processName=com.robosoft.example
> app=ProcessRecord{43516130 181:com.robosoft.example/10018}
> Intent { action=android.intent.action.MAIN
> categories={android.intent.category.LAUNCHER}
> ---
> As I gather, this shows that all three activities are part of the same
> task, even though I use FLAG_ACTIVITY_NEW_TASK while starting
> 'SingleTaskActivity' and mark it with 'singleTask' launch mode. The
> intent flag value (0x1000) indicates this in the top most activity
> entry above.
>
> I cannot explain this behavior with my current understanding derived
> from the documentation. What am I missing here?
>
> thanks
>
>
> On Sat, May 2, 2009 at 10:50 AM, devi prasad wrote:
>> Hi, Dianne: ok, thanks.
>> I use the following functions to determine the task id and if it is
>> the root of a task:
>>
>> activity.getTaskId();
>> activity.isTaskRoot();
>>
>> I used logcat looking for useful hints. Let me see if I understand it
>> better if I use
>> "adb shell dumpsys activity"
>>
>
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[android-developers] Re: Relationships among apps, tasks, and activities
Hi, Dianne: this is the portion of the dump that I get by executing
"adb shell dumpsys activity" :
--
Activities in Current Activity Manager State:
Task{3 com.robosoft.example}
clearOnBackground=false numActivities=3 rootWasReset=true
affinity=com.robosoft.example
intent=Intent { action=android.intent.action.MAIN
categories={android.intent.category.LAUNCHER}
flags=0x1020
comp={com.robosoft.example/com.robosoft.example.AppRootActivity} }
History #3:
HistoryRecord{434d2090
{com.robosoft.example/com.robosoft.example.SingleTaskActivity}}
packageName=com.robosoft.example processName=com.robosoft.example
app=ProcessRecord{43516130 181:com.robosoft.example/10018}
Intent { flags=0x1000
comp={com.robosoft.example/com.robosoft.example.SingleTaskActivity} }
History #2:
HistoryRecord{434fb848
{com.robosoft.example/com.robosoft.example.ChildActivityOfRoot}}
packageName=com.robosoft.example processName=com.robosoft.example
app=ProcessRecord{43516130 181:com.robosoft.example/10018}
Intent {
comp={com.robosoft.example/com.robosoft.example.ChildActivityOfRoot} }
History #1:
HistoryRecord{434fe2e8
{com.robosoft.example/com.robosoft.example.AppRootActivity}}
packageName=com.robosoft.example processName=com.robosoft.example
app=ProcessRecord{43516130 181:com.robosoft.example/10018}
Intent { action=android.intent.action.MAIN
categories={android.intent.category.LAUNCHER}
---
As I gather, this shows that all three activities are part of the same
task, even though I use FLAG_ACTIVITY_NEW_TASK while starting
'SingleTaskActivity' and mark it with 'singleTask' launch mode. The
intent flag value (0x1000) indicates this in the top most activity
entry above.
I cannot explain this behavior with my current understanding derived
from the documentation. What am I missing here?
thanks
On Sat, May 2, 2009 at 10:50 AM, devi prasad wrote:
> Hi, Dianne: ok, thanks.
> I use the following functions to determine the task id and if it is
> the root of a task:
>
> activity.getTaskId();
> activity.isTaskRoot();
>
> I used logcat looking for useful hints. Let me see if I understand it
> better if I use
> "adb shell dumpsys activity"
>
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[android-developers] Re: Relationships among apps, tasks, and activities
Hi, Dianne: ok, thanks. I use the following functions to determine the task id and if it is the root of a task: activity.getTaskId(); activity.isTaskRoot(); I used logcat looking for useful hints. Let me see if I understand it better if I use "adb shell dumpsys activity" On Sat, May 2, 2009 at 10:39 AM, Dianne Hackborn wrote: > The behavior you are describing is not how things work. What do you mean > you don't see another task? How are you telling? "adb shell dumpsys > activity" will show you the current activity state with the exact task > organization (in the first part of the output). > > On Fri, May 1, 2009 at 9:17 PM, devi prasad wrote: >> >> Hi >> I am trying to understand the interactions among apps, processes, >> activities, >> and tasks. After reading 'Application Fundamentals' many times, I wrote a >> tiny >> piece of code with three different activities. Here's my manifest file: >> >> >> > android:label="App1"> >> >> >> >> >> >> >> > android:label="ChildActivity:ChildOfAppRootActivity"> >> >> >> > android:label="ChildActivity:SingleTaskActivity" >> android:launchMode="singleTask"> >> >> >> >> The AppRootActivity starts ChildActivityOfRoot which in turn starts >> SingleTaskActivity. >> >> Since 'SingleTaskActivity' is marked with 'singleTask' launchMode I >> expected >> two different tasks with the following activity sets: >> Task1 --> AppRootActivity - ChildActivityOfRoot >> Task2 --> SingleTaskActivity >> >> However, I was surprised to see all three activities running in the same >> task. >> This doesn't change even if I use Intent.FLAG_ACTIVITY_NEW_TASK flag in >> the >> intent used to activate 'SingleTaskActivity'. I use the getTaskId() to >> determine >> the task the activity is running. >> >> IMO this behavior is not at all apparent from the documentation. Can >> someone >> shed more light? >> >> Thanks >> >> > > > > -- > Dianne Hackborn > Android framework engineer > hack...@android.com > > Note: please don't send private questions to me, as I don't have time to > provide private support, and so won't reply to such e-mails. All such > questions should be posted on public forums, where I and others can see and > answer them. > > > > > --~--~-~--~~~---~--~~ You received this message because you are subscribed to the Google Groups "Android Developers" group. To post to this group, send email to android-developers@googlegroups.com To unsubscribe from this group, send email to android-developers-unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/android-developers?hl=en -~--~~~~--~~--~--~---
[android-developers] Re: Relationships among apps, tasks, and activities
The behavior you are describing is not how things work. What do you mean you don't see another task? How are you telling? "adb shell dumpsys activity" will show you the current activity state with the exact task organization (in the first part of the output). On Fri, May 1, 2009 at 9:17 PM, devi prasad wrote: > > Hi > I am trying to understand the interactions among apps, processes, > activities, > and tasks. After reading 'Application Fundamentals' many times, I wrote a > tiny > piece of code with three different activities. Here's my manifest file: > > > android:label="App1"> > > > > > > > android:label="ChildActivity:ChildOfAppRootActivity"> > > > android:label="ChildActivity:SingleTaskActivity" > android:launchMode="singleTask"> > > > > The AppRootActivity starts ChildActivityOfRoot which in turn starts > SingleTaskActivity. > > Since 'SingleTaskActivity' is marked with 'singleTask' launchMode I > expected > two different tasks with the following activity sets: > Task1 --> AppRootActivity - ChildActivityOfRoot > Task2 --> SingleTaskActivity > > However, I was surprised to see all three activities running in the same > task. > This doesn't change even if I use Intent.FLAG_ACTIVITY_NEW_TASK flag in the > intent used to activate 'SingleTaskActivity'. I use the getTaskId() to > determine > the task the activity is running. > > IMO this behavior is not at all apparent from the documentation. Can > someone > shed more light? > > Thanks > > > > -- Dianne Hackborn Android framework engineer hack...@android.com Note: please don't send private questions to me, as I don't have time to provide private support, and so won't reply to such e-mails. All such questions should be posted on public forums, where I and others can see and answer them. --~--~-~--~~~---~--~~ You received this message because you are subscribed to the Google Groups "Android Developers" group. To post to this group, send email to android-developers@googlegroups.com To unsubscribe from this group, send email to android-developers-unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/android-developers?hl=en -~--~~~~--~~--~--~---
