Kotlin使用#close后应释放此光标

Question

使用后如何正确关闭Kotlin中的光标。我知道如何在Java中执行此操作，但是不管我在Kotlin中执行什么操作，它仍然会警告您关闭它。

我试过了：

        val cursor = context!!.getContentResolver().query(DbProvider.CONTENT_URI_VERSES, null, where, null, null)!!
        if (cursor.moveToFirst()) {
            try {
                arabicTextTV.text = cursor.getString(cursor.getColumnIndex(DbHelper.COL_ARABIC1))
            } finally {
                cursor.close()
            }
        }

和现代的方式：

        val cursor = context!!.getContentResolver().query(DbProvider.CONTENT_URI_VERSES, null, where, null, null)!!
        if (cursor.moveToFirst()) {
            cursor.use {
                arabicTextTV.text = cursor.getString(cursor.getColumnIndex(DbHelper.COL_ARABIC1))
            }
        }

Answer 1

        context?.contentResolver?.query(DbProvider.CONTENT_URI_VERSES, null, where, null, null)
        ?.use {
            if (it.moveToFirst()) {
                arabicTextTV.text = it.getString(it.getColumnIndex(DbHelper.COL_ARABIC1))
            }
        }

https://kotlinlang.org/api/latest/jvm/stdlib/kotlin.io/use.html