Help set formatted value to TextWidget

[Diy2210]

Hi, I try convert value to byte size to Gb and set to TextWidget in UnitItem. But in block text = data.map { ... } I get an error. And I don't understand how add in this block value + "String" like text = data.map { it.total.desc() + "Gb" as StringDesc() } Always return Error. In Android I use android.text.format.Formatter.formatShortFileSize and all works.

Value("total" in Kb):

My List:

My fun TableUnits:

Class unit items where I create TextWidget:

Convert fun to Mb/Gb:

[Dorofeev]

If I understand correctly, what are you trying to do, you can use string template feature as shown below

text = data.map {
    if (it.total.isNotEmpty()) {
        "${bytesToGB(it.total.toLong())} Gb".desc()
    } else {
        it.total.desc()
    }
}

[Diy2210]

If I understand correctly, what are you trying to do, you can use string template feature as shown below

text = data.map {
    if (it.total.isNotEmpty()) {
        "${bytesToGB(it.total.toLong())} Gb".desc()
    } else {
        it.total.desc()
    }
}

I try it, but dont work, error returns!

[Dorofeev]

Can you provide more information about what kind of error is it?

[Tetraquark]

@Diy2210 Try to use this construction:

text = data.map {
    if (it.total.isNotEmpty()) {
        "${bytesToGB(it.total.toLong())} Gb".desc()
    } else {
        it.total.desc()
    } as StringDesc
}

[Diy2210]

Try to use this construction:

Oh, dont work too

Print error:

Error:

My Mutable Live Data:

Save Value to Data:

[Dorofeev]

Looks like problem is that it.total is not a number. Something like this should resolve problem.

text = data.map {
    val longTotal = it.total.toLongOrNull()
    if (longTotal != null) {
        "${bytesToGb(longTotal)} Gb".desc()
    } else {
        it.total.desc()
    } as StringDesc
}

[Diy2210]

Something like this should resolve problem.

Yeah, its work! Tnx bro!

[Diy2210]

And one more question, I try get percents *_(free 100) / total_, but an error is returned**.

[Dorofeev]

longFree!! will cause crash if it is null, you should move it inside if statement

if (longFree != null && longTotal != null) {
   val freePerCents = (longFree * 100) / longTotal
   "${freePerCents} %".desc()
}

You can read more about null-safety in Kotlin documentation https://kotlinlang.org/docs/reference/null-safety.html

[Diy2210]

I get it, all works goog, tnx again!