Kotlin DataBinding 将静态函数传递到布局 xml

在Java语言中，我可以很容易地传递静电函数来布局xml，使用:

public static String formatUnixTime(long timeInSeconds, String pattern) {
    SimpleDateFormat simpleDateFormat = new SimpleDateFormat(pattern, Locale.US);
    String value = simpleDateFormat.format(new Date(timeInSeconds * 1000));

    return value;
}

在XML中:

android:text='@{Utils.formatUnixTime(model.start_time, "hh:mm:ss")}'

但我在Kotlin try 了companion次，但没有成功.上面说

error: cannot find symbol
import my.package.name.HistoryItemBindingImpl;
                      ^
  symbol:   class HistoryItemBindingImpl
  location: package my.package.name

This is what i tried in kotlin

class Utils {
    companion object {
        fun formatUnixTime(timeInSeconds : Long, pattern: String) : String {
            val simpleDateFormat = SimpleDateFormat(pattern, Locale.US)
            val value = simpleDateFormat.format(Date(timeInSeconds * 1000))

            return value
        }
    }

和XML格式

android:text='@{Utils.Companion.formatUnixTime(model.start_time, "hh:mm:ss")}'

Really hope someone can help. Thanks!

Update With @Max Aves help. I fixed my code and below code will work. Maybe it will help someone.

class Utils {
    companion object {
        @JvmStatic
        fun formatUnixTime(timeInSeconds : Long, pattern: String) : String {
            val simpleDateFormat = SimpleDateFormat(pattern, Locale.US)
            val value = simpleDateFormat.format(Date(timeInSeconds * 1000))

            return value
        }

And you can use this in xml

android:text='@{Utils.formatUnixTime(model.start_time, "hh:mm:ss")}'