I'm trying to add values to an arrayList only at specific positions. For example, if the value exists for position 0, then add it to array, else skip and get to next position and check the condition again. Is this possible? I tried something but I'm getting this error: java.lang.IndexOutOfBoundsException: Index: 1, Size: 0
My code:
for(item in reverseTicketsList){
if(i<=6) {
val value: String = item.total!!.replaceFirst(",", ".")
val date: String = item.label!!.replace(".2020", "")
var j = 0
if (value.toFloat() != 0F) {
if (item.values.first!!.toFloat() != 0F) {
hoursValuesArray.add(j, item.values.first!!.toFloat())
j++
}
else{
j++
}
if (item.values.second!!.toFloat() != 0F) {
hoursValuesArray.add(j, item.values.second!!.toFloat())
j++
}
else{
j++
}
if (item.values.third!!.toFloat() != 0F) {
hoursValuesArray.add(j, item.values.third!!.toFloat())
j++
}
else{
j++
}
entriesVerticalBar.add(BarEntry(i, hoursValuesArray.toFloatArray()))
barLabesArrayList.add(date)
i++
hoursValuesArray.clear()
}
}
If you have any solutions please let me know! Thanks
EDIT
A simpler example of what I'm trying to do and what I need:
val exampleArray: MutableList<Float> = ArrayList()
exampleArray.add(0, 10f)
exampleArray.add(2, 10f)
exampleArray.add(4, 10f)
question from:
https://stackoverflow.com/questions/65641206/how-to-add-an-item-to-an-arraylist-in-kotlin-only-at-specific-positions 与恶龙缠斗过久,自身亦成为恶龙;凝视深渊过久,深渊将回以凝视…