I created a test app which has two tasks to duplicate the
functionality of my more complex app. When I hit the HOME button, and
then resume the app (task), instead of bringing you back to the place
in the task stack where I left off (MyActivityA2), Android adds
another copy of the root task to the top (MyActivityA1). This is
despite the fact that the documentation says its supposed to bring you
back to the activity in the task where you left off.
1. When I hit HOME --> app icon from LAUNCHER, I lose task state.
2. When I hit HOME --> Long-press HOME, and switch task using task
switcher, I don't lose state.
Is this the expected behavior? I would like the app to resume at the
last place regardless of whether the user re-launches from the
LAUNCHER, or re-launches by using the task switcher when at HOME.
Otherwise, the Task stack looks like the following, with duplicate
Activities in the stack (instead of just MyActivityA1, MyActivityA2).
Task Stack:
* TaskRecord{4098ea78 #109 A com.example}
clearOnBackground=false numActivities=4 rootWasReset=false
affinity=com.example
intent={flg=0x10000000 cmp=com.example/.MyActivityA1}
realActivity=com.example/.MyActivityA1
lastActiveTime=116677973 (inactive for 9s)
* Hist #23: HistoryRecord{409879a8 com.example/.MyActivityA2}
packageName=com.example processName=com.example
launchedFromUid=10081 app=ProcessRecord{406f0e18
9349:com.example/10081}
Intent { cmp=com.example/.MyActivityA2 }
frontOfTask=false task=TaskRecord{4098ea78 #109 A com.example}
taskAffinity=com.example
realActivity=com.example/.MyActivityA2
base=/data/app/com.example-2.apk/data/app/com.example-2.apk
data=/data/data/com.example
labelRes=0x7f040000 icon=0x7f020000 theme=0x0
stateNotNeeded=false componentSpecified=true
isHomeActivity=false
configuration={ scale=1.0 imsi=0/0 loc=en_US touch=3
keys=1/1/2 nav=3/1 orien=2 layout=34 uiMode=17 seq=16}
launchFailed=false haveState=false icicle=null
state=RESUMED stopped=false delayedResume=false
finishing=false
keysPaused=false inHistory=true launchMode=0
fullscreen=true visible=true frozenBeforeDestroy=false
thumbnailNeeded=false idle=true
waitingVisible=false nowVisible=true
* Hist #22: HistoryRecord{409bf6c8 com.example/.MyActivityA1}
packageName=com.example processName=com.example
launchedFromUid=10026 app=ProcessRecord{406f0e18
9349:com.example/10081}
Intent { act=android.intent.action.MAIN
cat=[android.intent.category.LAUNCHER] flg=0x10600000
cmp=com.example/.MyActivityA1 }
frontOfTask=false task=TaskRecord{4098ea78 #109 A com.example}
taskAffinity=com.example
realActivity=com.example/.MyActivityA1
base=/data/app/com.example-2.apk/data/app/com.example-2.apk
data=/data/data/com.example
labelRes=0x7f040000 icon=0x7f020000 theme=0x0
stateNotNeeded=false componentSpecified=true
isHomeActivity=false
configuration={ scale=1.0 imsi=0/0 loc=en_US touch=3
keys=1/1/2 nav=3/1 orien=1 layout=34 uiMode=17 seq=15}
launchFailed=false haveState=true
icicle=Bundle[mParcelledData.dataSize=204]
state=STOPPED stopped=true delayedResume=false finishing=false
keysPaused=false inHistory=true launchMode=0
fullscreen=true visible=false frozenBeforeDestroy=false
thumbnailNeeded=false idle=true
* Hist #21: HistoryRecord{40956df8 com.example/.MyActivityA2}
packageName=com.example processName=com.example
launchedFromUid=10081 app=ProcessRecord{406f0e18
9349:com.example/10081}
Intent { cmp=com.example/.MyActivityA2 }
frontOfTask=false task=TaskRecord{4098ea78 #109 A com.example}
taskAffinity=com.example
realActivity=com.example/.MyActivityA2
base=/data/app/com.example-2.apk/data/app/com.example-2.apk
data=/data/data/com.example
labelRes=0x7f040000 icon=0x7f020000 theme=0x0
stateNotNeeded=false componentSpecified=true
isHomeActivity=false
configuration={ scale=1.0 imsi=0/0 loc=en_US touch=3
keys=1/1/2 nav=3/1 orien=1 layout=34 uiMode=17 seq=15}
launchFailed=false haveState=true
icicle=Bundle[mParcelledData.dataSize=204]
state=STOPPED stopped=true delayedResume=false finishing=false
keysPaused=false inHistory=true launchMode=0
fullscreen=true visible=false frozenBeforeDestroy=false
thumbnailNeeded=false idle=true
* Hist #20: HistoryRecord{40569808 com.example/.MyActivityA1}
packageName=com.example processName=com.example
launchedFromUid=2000 app=ProcessRecord{406f0e18
9349:com.example/10081}
Intent { flg=0x10000000 cmp=com.example/.MyActivityA1 }
frontOfTask=true task=TaskRecord{4098ea78 #109 A com.example}
taskAffinity=com.example
realActivity=com.example/.MyActivityA1
base=/data/app/com.example-2.apk/data/app/com.example-2.apk
data=/data/data/com.example
labelRes=0x7f040000 icon=0x7f020000 theme=0x0
stateNotNeeded=false componentSpecified=true
isHomeActivity=false
configuration={ scale=1.0 imsi=0/0 loc=en_US touch=3
keys=1/1/2 nav=3/1 orien=1 layout=34 uiMode=17 seq=15}
launchFailed=false haveState=true
icicle=Bundle[mParcelledData.dataSize=204]
state=STOPPED stopped=true delayedResume=false finishing=false
keysPaused=false inHistory=true launchMode=0
fullscreen=true visible=false frozenBeforeDestroy=false
thumbnailNeeded=false idle=true
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