Android Question FILE NOT FOUND - ENOENT

post you project code

The code's been pretty stable for 3 months... it's something else. It triggers FIRST, the first time the file is ever attempted to be accessed and then good, and then bad... But once there's a record in the database in DirInternal, this never happens again, and I'm not storing anything in the initial setup file that runs on startup, or retrieving that data except until I try to get the first pic from Assets...

Here's the error:

** Activity (main) Pause, UserClosed = false **
** Activity (addedit) Create, isFirst = false **

** Activity (addedit) Resume **
java.io.FileNotFoundException: / / : open failed: ENOENT (No such file or directory)
at libcore.io.IoBridge.open(IoBridge.java:409)
at java.io.FileInputStream.<init>(FileInputStream.java:78)
at anywheresoftware.b4a.objects.streams.File.OpenInput(File.java:209)
at anywheresoftware.b4a.objects.drawable.CanvasWrapper$BitmapWrapper.InitializeSample(CanvasWrapper.java:532)
at com.twodogapps.p2s.addedit._activity_resume(addedit.java:627)
at java.lang.reflect.Method.invokeNative(Native Method)
at java.lang.reflect.Method.invoke(Method.java:515)
at anywheresoftware.b4a.BA.raiseEvent2(BA.java:174)
at anywheresoftware.b4a.BA.raiseEvent(BA.java:158)
at com.twodogapps.p2s.addedit.afterFirstLayout(addedit.java:104)
at com.twodogapps.p2s.addedit.access$100(addedit.java:16)
at com.twodogapps.p2s.addedit$WaitForLayout.run(addedit.java:76)
at android.os.Handler.handleCallback(Handler.java:733)
at android.os.Handler.dispatchMessage(Handler.java:95)
at android.os.Looper.loop(Looper.java:136)
at android.app.ActivityThread.main(ActivityThread.java:5017)
at java.lang.reflect.Method.invokeNative(Native Method)
at java.lang.reflect.Method.invoke(Method.java:515)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:779)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:595)
at dalvik.system.NativeStart.main(Native Method)
Caused by: libcore.io.ErrnoException: open failed: ENOENT (No such file or directory)
at libcore.io.Posix.open(Native Method)
at libcore.io.BlockGuardOs.open(BlockGuardOs.java:110)
at libcore.io.IoBridge.open(IoBridge.java:393)
... 20 more
java.io.FileNotFoundException: / / : open failed: ENOENT (No such file or directory)
** Activity (main) Create, isFirst = true **

Here's the code that I'm sure is causing this the first time that file is accessed:


ResizePhoto is working fine and TurnOnBlankButtons is innocuous. It's that blank2.png it's trying to find. And, I know it's there or the pic wouldn't show up afterwards or in other places in the code... But this one errors, when I say yes to the error, it continues and the buttons that were turned on are there, just NOT that image! And this ONLY happens in the beginning!!!

FYI:

Private iv As ImageView is in Globals and has been stable for months.
Dim osizeh, osizew, osizet, osizel As Int are also in Globals. Another FYI, the error system is reporting those as unused variables that are never assigned a value but clearly are in the code.

What does ResizePhoto() do? I noticed you are passing the file to the function instead of the bitmap. Possibly it is deleting, then recreating it every other call?

Here's the code for ResizePhoto. This is used every time a picture is added from the gallery or a picture is taken, and it gets the dimensions of the pic, and resizes the pic to fit into the ImageView, iv. This is because the picture size changes based on device orientation and original dimensions of the pic chosen, so the proportions displayed are correct.

The stack trace you posted seems odd. I see no reference to SetBlankPic nor LoadBitmap(). I do see a reference to CanvasWrapper$BitmapWrapper.InitializeSample, but it should be CanvasWrapper$BitmapWrapper.Initialize if it is being called from within LoadBitmap(). Are you making any calls to InitializeSample() other than in ResizePhoto()? Somewhere within Activity_Resume?

Yes, it's called several times but all in different situations. But I'll track them and see if I can find where they're being hit and if being hit at the wrong times.

Unfortunately, you can't set breakpoints in release mode, but you can use Log() to track what your code is doing at various points. One thing to try is putting Log("--Entering Sub MySub") and Log("--Exiting Sub MySub") at the start and end of each subroutine so you will know which one it is in when the error occurs. Also, any function calls you might suspect, you can place Log("--Calling ThisFunction"), Log("--Called ThisFunction") to determine if it is the actual problem.

for example, you can change the above Sub like so.

Might make narrowing down the actual problem much easier.

Right...
In some cases i also print the complete sub-call to the log too to see "what exactly i´m calling here" (or in the sub i´m calling i do logs about which parameters and which values the parameter have

Thanks James... Yea, I know... What I'm trying to figure out is what I changed that killed this... none of that code has changed in months, and it's never given me a problem before. I screwed something up today I think, but not sure what... Thanks for the Log ideas... I do know how to use them... Just sort of pain...I'm trying to see if I can trigger it in debug mode now... would be much easier to find it if I can stay in debug and have it pop up...

Thanks too Manfred!

Update... Somehow, it cleared it self up. Of course, that makes me very uncomfortable, but at least it's working, even from a clean install... I didn't change and of the calls, just tinkered a bit with other stuff, and the next time I tried it, it worked...

Go figure! Thanks for all the replies guys... really appreciated.