1.4.1 crash on return from cache to cachlist

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What steps will reproduce the problem?
1. select cache
2. fast return to cache list -> crashes many times 

What is the expected output? What do you see instead?
expected: cachelist
I see: HTC Home screen or a far away waypoint not in the actual cashlist
(5900km away).

What version of the product are you using? On what operating system?
1.4.1 on Android 1.6 (HTC Magic Vodafone)

Please provide any additional information below.
The occurence depends on the cache, possibly on the cache size and loading
time. The crashrisk seems to be sinking when time between entering and
leaving the cache rises.
First I recognized the problem in conjuction with the GPS Toolbox (as radar
 replacement). Additional steps:
1a. enter "gps toolbox" by clicking on arrow
1b. leave "gps toolbox" with "return-button"

Original issue reported on code.google.com by t.muelle...@gmail.com on 10 Jan 2010 at 8:40

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Original comment by andpet@gmail.com on 7 Feb 2010 at 3:05

• Added labels: Version1.4

[GoogleCodeExporter]

Debugging. Cannot reproduce every time, but the following is a crash debug.  
Cache List -> Cache -> Gps toolbox -> Go back -> Go back => Error. 
D/NetworkLocationProvider( 1030): removeListener(): com.google.code.geobeagle
D/GpsLocationProvider( 1030): stopNavigating
D/libgps  ( 1030): GpsInterface_stop()
D/libgps  ( 1030): action_thread_main(): BP not in session, sending fake END cal
lback
D/libgps  ( 1030): status_cb: GPS_STATUS_SESSION_END (2)
D/GpsLocationProvider( 1030): Releasing wakelock
D/NetworkLocationProvider( 1030): enableLocationTracking(): false
D/GeoBeagle( 1687): CacheListDelegate.onResume()
D/Sensors ( 1030): using sensors (name=sensors)
D/GpsLocationProvider( 1030): setMinTime 1000
D/GpsLocationProvider( 1030): startNavigating
D/libgps  ( 1030): GpsInterface_set_position_mode( 1, 1 )
D/libgps  ( 1030): GpsInterface_start()
D/NetworkLocationProvider( 1030): addListener(): com.google.code.geobeagle
D/NetworkLocationProvider( 1030): setMinTime: 1000
D/NetworkLocationProvider( 1030): enableLocationTracking(): true
D/GeoBeagle( 1687): startCalculation starts thread for coordinate diff latitude=
-0.016694783333335295 longitude=0.02304228333332503
D/libgps  ( 1030): status_cb: GPS_STATUS_SESSION_BEGIN (1)
D/GpsLocationProvider( 1030): Acquiring wakelock
D/GeoBeagle( 1687): Thread starting to calculate
W/dalvikvm( 1687): threadid=21: thread exiting with uncaught exception (group=0x
4001b180)
E/AndroidRuntime( 1687): Uncaught handler: thread Thread-49 exiting due to uncau
ght exception
E/AndroidRuntime( 1687): java.lang.NullPointerException
E/AndroidRuntime( 1687):        at com.google.code.geobeagle.database.DbFrontend
.count(DbFrontend.java:240)
E/AndroidRuntime( 1687):        at com.google.code.geobeagle.database.CachesProv
iderDb.getTotalCount(CachesProviderDb.java:209)
E/AndroidRuntime( 1687):        at com.google.code.geobeagle.database.CachesProv
iderCount.getCaches(CachesProviderCount.java:55)
E/AndroidRuntime( 1687):        at com.google.code.geobeagle.database.CachesProv
iderWaitForInit.getCaches(CachesProviderWaitForInit.java:24)
E/AndroidRuntime( 1687):        at com.google.code.geobeagle.database.CachesProv
iderSorted.updateSortedList(CachesProviderSorted.java:85)
E/AndroidRuntime( 1687):        at com.google.code.geobeagle.database.CachesProv
iderSorted.getCaches(CachesProviderSorted.java:98)
E/AndroidRuntime( 1687):        at com.google.code.geobeagle.database.CachesProv
iderToggler.getCaches(CachesProviderToggler.java:31)
E/AndroidRuntime( 1687):        at com.google.code.geobeagle.database.CachesProv
iderCenterThread$CalculationThread.run(CachesProviderCenterThread.java:67)
I/Process ( 1030): Sending signal. PID: 1687 SIG: 3
I/dalvikvm( 1687): threadid=7: reacting to signal 3
I/dalvikvm( 1687): Wrote stack trace to '/data/anr/traces.txt'
D/NetworkLocationProvider( 1030): onCellLocationChanged [3393,515868,-1306754,20
8,7]
D/GpsLocationProvider( 1030): TTFF: 756
D/LocationMasfClient( 1030): getNetworkLocation(): Returning cache location with
 accuracy 4075.0
D/libgps  ( 1030): GpsInterface_inject_location( 35.853616, -90.767365, 4075.000

Original comment by markalbertschneider@gmail.com on 8 Feb 2010 at 8:06

[GoogleCodeExporter]

Thank you Mark for the analysis. A work-around is committed before r1011.

Original comment by andpet@gmail.com on 21 Feb 2010 at 4:38

• Changed state: Fixed