PROSAGA码农传奇-安卓-如何使用kotlin将图像上传到Firebase

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    尝试使用此代码作为参考：
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   <pre>
    <code>
      private fun getFileExtension(uri: Uri?): String? {
        val cR = activity!!.contentResolver
        val mime = MimeTypeMap.getSingleton()
        return mime.getExtensionFromMimeType(cR.getType(uri!!))
    }

override fun onActivityResult(requestCode: Int, resultCode: Int, data: Intent?) {
        super.onActivityResult(requestCode, resultCode, data)
        if (requestCode == PICK_IMAGE && resultCode == Activity.RESULT_OK) {
            val selectedfile = data!!.data //The uri with the location of the file
            val fname = getFileName(selectedfile)
            val file = FileUtils.getFile(activity, selectedfile)

val storage = FirebaseStorage.getInstance()
            val storageRef = storage.reference
            val progressDialog = ProgressDialog(getContext())
            progressDialog.setTitle("Uploading")
            progressDialog.show()
            val fileReference = mStorageRef!!.child(System.currentTimeMillis().toString()
                    + "." + getFileExtension(selectedfile))

var bitmap: Bitmap? = null
            try {
                bitmap = MediaStore.Images.Media.getBitmap(activity!!.contentResolver, selectedfile)
            } catch (e: IOException) {
                e.printStackTrace()
            }

val baos = ByteArrayOutputStream()
            bitmap!!.compress(Bitmap.CompressFormat.JPEG, 20, baos)
            val dat = baos.toByteArray()
            val uploadTask = fileReference.putBytes(dat)

uploadTask.addOnFailureListener { exception -> Log.i("whatTheFuck:", exception.toString()) }.addOnSuccessListener {
                // taskSnapshot.getMetadata() contains file metadata such as size, content-type, and download URL.
                progressDialog.dismiss()
                Toasty.success(getContext()!!, "Image Uploaded", Toast.LENGTH_LONG, true).show()
                uploadTask.continueWithTask { task ->
                    if (!task.isSuccessful) {
                    }

fileReference.downloadUrl
                }.addOnCompleteListener { task ->
                    if (task.isSuccessful) {
                        val downloadUri = task.result

//DatabaseReference ref = FirebaseDatabase.getInstance().getReference().child("users").child(mAu.getInstance().getCurrentUser().getUid());
                        val url = downloadUri!!.toString()
                        Log.i("seeThisUri", downloadUri.toString())// This is the one you should store
                        db!!.collection(s!!).document(docname!!)
                                .update(
                                        "imageurl", url
                                )

//   Upload upload = new Upload(editTextName.getText().toString().trim(),

// Toast.makeText(getContext(),url,Toast.LENGTH_LONG).show();
                        //  String uploadId = ref.push().getKey();
                        //ref.child(uploadId).setValue(upload);

} else {
                        Toasty.info(getContext()!!, "Image Not Selected", Toast.LENGTH_LONG, true).show()
                    }
                }
            }.addOnProgressListener { taskSnapshot ->
                val progress = 100.0 * taskSnapshot.bytesTransferred / taskSnapshot.totalByteCount
                progressDialog.setMessage("Uploaded " + progress.toInt() + "%...")
            }

} else if (requestCode == REQUEST_CAMERA && resultCode == Activity.RESULT_OK) {
            val extras = data!!.extras
            val selectedfile = extras!!.get("data") as Bitmap
            val imageuri = getImageUri(activity!!, selectedfile)
            val fname = getFileName(imageuri)
            val file = FileUtils.getFile(activity, imageuri)
            val storage = FirebaseStorage.getInstance()
            val storageRef = storage.reference
            val progressDialog = ProgressDialog(getContext())
            progressDialog.setTitle("Uploading")
            progressDialog.show()
            val fileReference = mStorageRef!!.child(System.currentTimeMillis().toString()
                    + "." + getFileExtension(imageuri))

var bitmap: Bitmap? = null
            try {
                bitmap = MediaStore.Images.Media.getBitmap(activity!!.contentResolver, imageuri)
            } catch (e: IOException) {
                e.printStackTrace()
            }

fileReference.downloadUrl
                }.addOnCompleteListener { task ->
                    if (task.isSuccessful) {
                        val downloadUri = task.result

//   Upload upload = new Upload(editTextName.getText().toString().trim(),

// Toast.makeText(getContext(),url,Toast.LENGTH_LONG).show();
                        //  String uploadId = ref.push().getKey();
                        //ref.child(uploadId).setValue(upload);

}
    }

private fun getImageUri(context: Context, inImage: Bitmap): Uri {
        val bytes = ByteArrayOutputStream()
        inImage.compress(Bitmap.CompressFormat.JPEG, 100, bytes)
        val path = MediaStore.Images.Media.insertImage(context.contentResolver, inImage, "Title", null)
        return Uri.parse(path)
    }

fun getFileName(uri: Uri?): String {
        var result: String? = null
        if (uri!!.scheme == "content") {
            val cursor = activity!!.contentResolver.query(uri, null, null, null, null)
            try {
                if (cursor != null && cursor.moveToFirst()) {
                    result = cursor.getString(cursor.getColumnIndex(OpenableColumns.DISPLAY_NAME))
                }
            } finally {
                cursor!!.close()
            }
        }
        if (result == null) {
            result = uri.path
            val cut = result!!.lastIndexOf('/')
            if (cut != -1) {
                result = result.substring(cut + 1)
            }
        }
        return result
    }

</code>
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