Kotlin Image Compression Implementation

You don't seem to be passing anything into your function for sendtoFirebase. i am posting code i have done to successfully upload.

you looking at compressing first so you would need this;

private fun compressBitmap(bitmap: Bitmap, quality: Int): Bitmap {

    val stream = ByteArrayOutputStream()

    bitmap.compress(Bitmap.CompressFormat.WEBP,quality,stream)

    val byteArray = stream.toByteArray()

    arrayByte = byteArray

    
                uploadFile(arrayByte)
         
 
    return BitmapFactory.decodeByteArray(byteArray,0,byteArray.size)


}

in the above, uploadFile is the call for the firebase upload. i am passing the compressed bitmap into the function. the functional for upload looks as follows:

in below mImageURI is a companion object which is part of the URI passed for compression. you can remove the if statement below if you dont want to do the check

 private fun uploadFile(data:ByteArray) {


    if (mImageUri != null){

        val storageref = imageref.child("put your image id here")

        storageref.putBytes(data).addOnSuccessListener {

                            Handler().postDelayed({

                                progressbar.setProgress(0)
                                Toast.makeText(activity, "Upload Successful", Toast.LENGTH_LONG).show()

                            }

                                , 1000)
               
        }.addOnFailureListener{e->

            Toast.makeText(activity,e.message,Toast.LENGTH_LONG).show()
        }.addOnProgressListener {taskSnapshot ->

            val progress = (100.0 * taskSnapshot.bytesTransferred/taskSnapshot.totalByteCount)

            progressbar.setProgress(progress.toInt())

        }

    }
    else if(mImageUri == null) {
        Toast.makeText(activity,"No File Selected",Toast.LENGTH_LONG).show()

    }
}

You do not need to have the progress bar above. its just a nice visual for the user to have to see the progress of the upload if the file is large.

your really only need to ensure that you passing data into .putbytes

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Edit: For your onActivity result if your code is similar to mine then use;

override fun onActivityResult(requestCode: Int, resultCode: Int, data: Intent?) { super.onActivityResult(requestCode, resultCode, data)

    if (requestCode == PICK_IMAGE_REQUEST && resultCode == RESULT_OK
        && data != null && data.getData() != null) {

            mImageUri = data.getData()!!

        image1.setImageURI(data.getData())


   }
}

in the above image1 is a imageView on the current page to show the image selected.

Hope this helps