Android Question [SOLVED]List Index Out of Bounds

nobbi59 · Nov 28, 2014

Hi Guys,

I have the following code:

B4X:

For k = 0 To (myMap.Size / 7) -1
        If slist.Get(k)= Value Then
        Else
        intlist.Add(k)
        End If
   
    Next
    Dim p As Int
    For p = 0 To intlist.Size
        titelliste.RemoveAt(intlist.Get(p))
    Next

And I get the Error java.IndexOutOfBounds Exception in the following line: titelliste.RemoveAt(intlist.Get(p))

But I dont know what I´m doing wrong

Hope you guys can help me

stevel05 · Nov 28, 2014

It's difficult to tell without being able to see how you are filling the lists, but
For p = 0 To intlist.Size looks like a contender. If intlist is the same size as titelliste, then it should be
For p = 0 To intlist.Size -1

sorex · Nov 28, 2014

deleting items and forward progression will cause issues.

you have to do it backwarths since the array/list size changes constantly on deletion which leads to out of bounds.

B4X:

For p = intlist.Size-1 to 0 step -1
titelliste.RemoveAt(intlist.Get(p))
Next

klaus · Nov 28, 2014

I agree with steve!
You don't give enough information !
Put a breakpoint at the line where you get the error and check the values.
That's the best way to debug programs.
You may also try:
For p = intlist.Size -1 To 0 Step -1

nobbi59 · Nov 28, 2014

Sorex answer solved the problem, thx

Android Question [SOLVED]List Index Out of Bounds

nobbi59

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stevel05

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Android Question [SOLVED]List Index Out of Bounds

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