To use multiple arguments for a data binding adapter the Java syntax is
@BindingAdapter(value={"arg1", "arg2"}, requireAll = false)
However this does not compile in Kotlin:
Error:(13, 37) Unexpected tokens (use ';' to separate expressions on the same line)
what's the correct syntax for multiple arguments in Kotlin?
Should be:
@BindingAdapter(value=*arrayOf("arg1", "arg2"), requireAll = false)
Please refer to the official annotations docs for Java Annotations in Kotlin
Quoting:
For other arguments that have an array type, you need to use arrayOf explicitly:
// Java
public @interface AnnWithArrayMethod {
String[] names();
}
// Kotlin
@AnnWithArrayMethod(names = arrayOf("abc", "foo", "bar")) class C
EDIT: Credit to @Francesc
requireAll argument must be set explicitly, that was the problem in my caseOr you can just simply do this
@BindingAdapter("arg1", "agr2", "agr3", "agr4", requireAll = false)
as pointed in Android Official Docs
From Kotlin 1.2 you can do
@BindingAdapter(value = ["arg1", "arg2"], requireAll = false)
You can also do it by this way:
@BindingAdapter(value= ["deckBackgroundAsFirstParameter", "typeAsSecondParameter"], requireAll = false)
fun loadBackgroundMethodNameForExample(imageViewForExample: ImageView, deckBackgroundAsFirstParameter: Int?, typeAsSecondParameter: Int?) {
...
}
where value is an array of the parameters that you want to use.
