ArrayIndexOutOfBoundsException on line chart

[jaichandra]

I get this error on zooming and scrolling the linechart. This happens intermittently.

java.lang.ArrayIndexOutOfBoundsException: src.length=69 srcPos=0 dst.length=32 dstPos=-37 length=69
at java.lang.System.arraycopy(Native Method)
at lecho.lib.hellocharts.formatter.ValueFormatterHelper.formatFloatValueWithPrependedAndAppendedText(ValueFormatterHelper.java:79)
at lecho.lib.hellocharts.formatter.ValueFormatterHelper.formatFloatValueWithPrependedAndAppendedText(ValueFormatterHelper.java:94)
at lecho.lib.hellocharts.formatter.SimpleAxisValueFormatter.formatValueForManualAxis(SimpleAxisValueFormatter.java:20)
at lecho.lib.hellocharts.renderer.AxesRenderer.drawAxisLabelsAndName(AxesRenderer.java:575)
at lecho.lib.hellocharts.renderer.AxesRenderer.drawInForeground(AxesRenderer.java:385)
at lecho.lib.hellocharts.view.AbstractChartView.onDraw(AbstractChartView.java:93)

[lecho]

Labels can have up to 32 characters, do you have labels with more chars?

[jaichandra]

No. I don't. But they are in the format of MM-DD-YY strings

[lecho]

Exception is thrown in this line ValueFormatterHelper.java#L79

System.arraycopy(label, 0, formattedValue, formattedValue.length - label.length, label.length);

Where label is char array from AxisValue and formattedValue is char array with size 32.

Error message
src.length=69 srcPos=0 dst.length=32 dstPos=-37 length=69
means that label(src) has size 69 and formattetValue(dsc) has size 32 so there is invalid offset by -37(32-69) positions.

Is there any possibility that any of your formatted labels in MM-DD-YY have some additional chars, can you display them all in logcat?

[jaichandra]

Yes.. looks like that was the problem. When I was formatting dates in MM-DD-YY format, seems like moment.js is throwing an exception and creating an exception string in place of the formatted value. Got it working now after fixing labels.

Thanks a ton.