java.lang.VerifyError: Verifier rejected class on Lollipop when using release APK

Question

I get this error when I install my release APK on a 5.x device. The error does not occur when I push the same code from Android Studio, or if I run it on a

Answer 1

In my case the method that the error message said was 'bad', had some unknown faults. Changing from a Kotlin lambda to a regular loop solved my issue.

Before (With Error):

fun validZipCode(zipcode: String): Boolean {
    val validRegexes = arrayOf(
            "0[0-9]{1}[0-9]{2}", 
            "1[0-2]{1}[0-9]{2}", 
            "1[3-4]{1}[0-9]{2}", 
            "19[0-9]{2}", 
            "2[0-1]{1}[0-9]{2}" 
    )
return validRegexes.any { zipcode.matches(it.toRegex()) }

After:

fun validZipCode(zipcode: String): Boolean {

    val validRegexes = arrayOf(
            "0[0-9]{1}[0-9]{2}", 
            "1[0-2]{1}[0-9]{2}", 
            "1[3-4]{1}[0-9]{2}",
            "19[0-9]{2}", 
            "2[0-1]{1}[0-9]{2}"
    )

    for (regex in validRegexes) {
        if (zipcode.matches(regex.toRegex())) {
            return true
        }
    }

    return false
}