HttpUtils internalcheckifcanstart null error

[QLogic]

Greetings,

This error has been baffling my mind, and I'm sure there is a simple fix to this, but here is the situation.

Initially the activity loads perfectly. What I'm doing is loading an xml and parsing it into a listview. Each listview, except the header fields, open up a pdf. All of this works perfect.

Ok, now I press the home button and immediately come back to the program right where I left off on that activity. Once again, it works perfectly. I press the home button again. I wait about 3-4 min, open the program once again. It works perfectly. I press the home button again and wait 10 minutes then open up the program again. This time, I get a null reference error. What do I need to do to prevent this from happening? Here is the log:


LogCat connected to: (my galaxy nexus)
--------- beginning of /dev/log/system


--------- beginning of /dev/log/main

** Activity (main) Create, isFirst = true **
** Activity (main) Resume **
** Activity (main) Pause, UserClosed = true **
** Activity (portal) Create, isFirst = true **
** Activity (portal) Resume **
** Activity (portal) Pause, UserClosed = true **
** Activity (collaterals) Create, isFirst = true **
** Activity (collaterals) Resume **
** Activity (collaterals) Pause, UserClosed = true **
** Activity (adapterslist) Create, isFirst = true **
** Activity (adapterslist) Resume **
** Activity (adapterslist) Pause, UserClosed = true **
** Activity (adapters) Create, isFirst = true **
** Activity (adapters) Resume **
** Activity (adapters) Pause, UserClosed = true **
** Activity (ql2400series) Create, isFirst = true **
Starting Job: Job1
** Activity (ql2400series) Resume **
** Service (httputilsservice) Create **
** Service (httputilsservice) Start **
** Service (httputilsservice) Destroy **
** Activity (ql2400series) Pause, UserClosed = false **
** Activity (ql2400series) Resume **
** Activity (ql2400series) Pause, UserClosed = false **
** Activity (ql2400series) Resume **
** Activity (ql2400series) Pause, UserClosed = false **
** Activity (ql2400series) Resume **
** Activity (ql2400series) Pause, UserClosed = false **
** Activity (ql2400series) Resume **


** Activity (ql2400series) Pause, UserClosed = false **
** Activity (ql2400series) Create, isFirst = true **


Starting Job: Job1


httputils_internalcheckifcanstart (java line: 159)

java.lang.NullPointerException
at qlgc.pkg.httputils._internalcheckifcanstart(httputils.java:159)
at qlgc.pkg.httputils._downloadlist(httputils.java:78)
at qlgc.pkg.httputils._download(httputils.java:71)
at qlgc.pkg.ql2400series._activity_create(ql2400series.java:320)
at java.lang.reflect.Method.invokeNative(Native Method)
at java.lang.reflect.Method.invoke(Method.java:511)
at anywheresoftware.b4a.BA.raiseEvent2(BA.java:113)
at qlgc.pkg.ql2400series.afterFirstLayout(ql2400series.java:84)
at qlgc.pkg.ql2400series.access$100(ql2400series.java:16)
at qlgc.pkg.ql2400series$WaitForLayout.run(ql2400series.java:72)
at android.os.Handler.handleCallback(Handler.java:605)
at android.os.Handler.dispatchMessage(Handler.java:92)
at android.os.Looper.loop(Looper.java:137)
at android.app.ActivityThread.main(ActivityThread.java:4340)
at java.lang.reflect.Method.invokeNative(Native Method)
at java.lang.reflect.Method.invoke(Method.java:511)


at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:784)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:551)
at dalvik.system.NativeStart.main(Native Method)
java.lang.NullPointerException

Thanks in advance for anyone that can solve this for me.

 

[Erel]

Which version of Basic4android are you using?
Can you upload your project (File - Export as zip)?

 

[QLogic]

Hi Erel,

My version number for the software is 1.80.

Thanks for looking into this.

EDIT: Just realized I can't send you the file on the site. My project zip size is about 4mb. Any other way I can send it to you?

Thanks.

 

[Erel]

You can send it to me by mail: [email protected]

 

[QLogic]

Awesome Erel,

I sent you the project files in an email. Thanks again for looking into this.

 

[Erel]

The fault is probably from this code:

Sub Activity_Resume

   If CloseApp = False Then
      ExitApplication
   End If
   CloseApp = False
End Sub

Try calling Activity.Finish instead and see if this issue still happens.

 

[QLogic]

Hi Erel,

It is still happening. Please see attached screenshot.

Thanks.

 

[Erel]

I'm unable to reproduce it. What are the exact steps?

 

[QLogic]

Hi Erel,

So here are the steps:

1. Tap Marketing Collaterals
2. Tap Adapters
3. Tap Fibre Channel Adapters
4. Tap QL 2400 series
5. Tap the home button
6. Wait about 10-15 min, do other normal android activity in the process like check email, view web, etc.
7. Come back to the QLogic app.
8. Error should produce.

I was able to reproduce the error on both the Galaxy Nexus and Droid Bionic.

Thanks again.

 

[Erel]

I'm now able to reproduce it. Using a task manager it is easy to reproduce it.

This is a bug that happens when the program is started in a secondary activity after the process was killed.
I've fixed it for the next update. I expect the beta version to be released next week.

 

[QLogic]

Awesome!

So at least I know now I wasn't going crazy trying to figure this thing out. Much appreciated Erel! Looking forward to the next release to resolve it.

Thanks.