Info about +1 code

[Asmoro]

Hi All,

I'm examine an error in FlickrView demo.

If I have a sub:

Sub ImageUrlDone (Url As String)
   ivs(ImageIndex).Bitmap = HttpUtils.GetBitmap(Url)
   ivs(ImageIndex).Gravity = Gravity.FILL
   ImageIndex = ImageIndex + 1
End Sub

What the +1 means in this case, cause the error log says:

java.lang.ArrayIndexOutOfBoundsException

** Activity (main) Resume **
Starting Job: Main page
** Service (httputilsservice) Create **
** Service (httputilsservice) Start **
done parsing main page: 23
Starting Job: Images
** Service (httputilsservice) Start **
main_imageurldone (B4A line: 97)
ivs(ImageIndex).Bitmap = HttpUtils.GetBitmap(Url)
java.lang.ArrayIndexOutOfBoundsException
at anywheresoftware.b4a.samples.flickr.main._imageurldone(main.java:548)
at java.lang.reflect.Method.invokeNative(Native Method)
at java.lang.reflect.Method.invoke(Method.java:507)
at anywheresoftware.b4a.BA.raiseEvent2(BA.java:105)
at anywheresoftware.b4a.BA.raiseEvent(BA.java:89)
at anywheresoftware.b4a.keywords.Common.CallSub4(Common.java:760)
at anywheresoftware.b4a.keywords.Common.CallSub2(Common.java:747)
at anywheresoftware.b4a.samples.flickr.httputilsservice._response_streamfinish(httputilsservice.java:336)
at java.lang.reflect.Method.invokeNative(Native Method)
at java.lang.reflect.Method.invoke(Method.java:507)
at anywheresoftware.b4a.BA.raiseEvent2(BA.java:105)
at anywheresoftware.b4a.BA$1.run(BA.java:210)
at android.os.Handler.handleCallback(Handler.java:587)
at android.os.Handler.dispatchMessage(Handler.java:92)
at android.os.Looper.loop(Looper.java:123)
at android.app.ActivityThread.main(ActivityThread.java:3701)
at java.lang.reflect.Method.invokeNative(Native Method)
at java.lang.reflect.Method.invoke(Method.java:507)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:862)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:620)
at dalvik.system.NativeStart.main(Native Method)
java.lang.ArrayIndexOutOfBoundsException

If I delete the +1: all the images quickly went by.
And -1: one image will be displayed.

So why the +1 is working on the original FlickrView demo and
not in my Flickr test demo, causing an error.

The differences between the two are fetching the web url and "links.add"

 

[pluton]

The error is here

ArrayIndexOutOfBoundsException

What is in your Array(). How many fields?
How many images do you fetching?
If I understood correct you have changed web url so it is not anymore flickr so you are trying to fetch maybe more images than is declared in array.

 

[Asmoro]

Hi Pluton,

Thanks helping me out.

It seems that the original FlickrView demo have 9 imageviews
in an array.

So I made a row of 3 x 3 on the website, and no errors came out.

Now I have to find out how to fetch another page with different images.