如何循环Firebase ML识别文本调用，直到返回正确的文本？

Question

就像标题所述，我想循环Firebase ML识别文本调用，直到返回正确的文本。但是，我的问题是Firebase ML Recognize Text调用返回的诺言在循环再次开始之前没有得到解决。我已经尝试了所有方法来阻止呼叫，甚至实现延迟功能，但无济于事。

编辑：我通过以下代码使其“正常工作”。

fun test() {
    OpenSpotify().waitFor()
    firebaseReadText() // THE PROMISE IS IN HERE
    Thread.sleep(1)
    Timer().schedule(2) {
        if(text != "Example Text") {
            test()
        }
    }
}

原始示例：

// Fetching media
val projection = arrayOf(
            MediaStore.Images.ImageColumns._ID,
            MediaStore.Images.ImageColumns.DATA,
            MediaStore.Images.ImageColumns.BUCKET_DISPLAY_NAME,
            MediaStore.Images.ImageColumns.DATE_TAKEN,
            MediaStore.Images.ImageColumns.MIME_TYPE
        )

// Cursor for selecting photo
val cursor = applicationContext.contentResolver
            .query(
                MediaStore.Images.Media.EXTERNAL_CONTENT_URI, projection,
                null, null, MediaStore.Images.ImageColumns.DATE_TAKEN + " DESC"
            )

// Function for opening an app
val OpenSpotify: () -> Process = {
            Runtime.getRuntime().exec(
                arrayOf(
                    "su", "-c", "" +
                            "monkey -p com.spotify.music -c android.intent.category.LAUNCHER 1" +
                            "screencap -p /sdcard/spotify.png"
                )
            )
}

// While loop
var text = ""
while (text != "Example Text?") {

    OpenSpotify().waitFor()
        if (cursor!!.moveToNext()) {
            val imageLocation = cursor.getString(1)
            val imageFile = File(imageLocation)
            if (imageFile.exists()) {
                val bm = BitmapFactory.decodeFile(imageLocation)
                val image = FirebaseVisionImage.fromBitmap(bm)
                val detector = FirebaseVision.getInstance().getOnDeviceTextRecognizer()
                detector.processImage(image)
                .addOnSuccessListener { firebaseVisionText ->

                    Log.i("test", "test")
                    text = "Example Text?"
                }
                .addOnFailureListener {
                    Log.i("test", "Error with Firebase!")
                }
            }
        }
}