OcrDetectorProcessor.kt

var resultAction: ((SparseArray<MLText.Block?>) -> Unit)? = null

override fun transactResult(results: MLAnalyzer.Result<MLText.Block?>) {
    val items = results.analyseList
    // Determine detection result processing as required. Note that only the detection results are processed.
    // Other detection-related APIs provided by ML Kit cannot be called.

    resultAction?.invoke(items)
    resultAction = null
}