Component used: Sqlite

Version used: 2.3.0-beta01

ContentProviders have methods of the signature:

override fun query(
    uri: Uri,
    projection: Array<String>?,
    selection: String?,
    selectionArgs: Array<String>?,
    sortOrder: String?
): Cursor? {

You'll note that the type of the selectionArgs is Array<String>?.

If you try to pass that to SupportSQLiteQueryBuilder.builder's selection method, you get the following error:

Type mismatch.
  Required:
    Array<Any?>?
  Found:
    Array<String>?

However, String is a subtype of Any?, so this should work without any casting, but selection is defined as

fun selection(selection: String?, bindArgs: Array<Any?>?)

Which means the only valid type is exactly Array<Any?>?.

Can you change it to

fun selection(selection: String?, bindArgs: Array<out Any?>?)

So that subtypes of Any? can also be accepted?

That would mean I could remove this hacky workaround:

// Convert from an Array<String>? to an Array<Any?>?
// without an unsafe cast
qb.selection(selection, selectionArgs?.toList()?.toTypedArray())