Android Save and Write Text File with Intent, getting IOException "No content provider"-CodePudding

I'm getting an exception when I try to write content to a file created with an Intent. The error is an IOException error "No content provider:Intent {...}". I see the file created in "My Drive", but it has no contents.

I want to output the text to a text file. This is a step on the way toward outputting data to an audio wav file. That's my goal.

I'm basically doing this tutorial, except I'm using Kotlin:

https://www.youtube.com/watch?v=CGD1Kr7A77Y&ab_channel=Sam'sAndroidClassroom

Can anyone help me with this? I've provided the code below, which is in an Activity file. "buttonFiles" is the button I'm adding a Click Listerner to.

    override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)
        setContentView(R.layout.activity_extra)
        
        buttonFiles.setOnClickListener{
            val intent = Intent()
                .addCategory(Intent.CATEGORY_OPENABLE)
                .setType("text/plain")
                .putExtra(Intent.EXTRA_TITLE, "testFileSam.txt")
                .setAction(Intent.ACTION_CREATE_DOCUMENT)
            startActivityForResult(Intent.createChooser(intent, "text file"), 1)
        }
    }

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

        if (requestCode == 1 && resultCode == RESULT_OK) {
            var uri = data
    
            try{
                if(uri != null) {
                    var outputStream = contentResolver.openOutputStream(Uri.parse(uri.toString()))
                    val charset = Charsets.UTF_8
                    outputStream?.write("Hello, is anybody out there!!!".toByteArray(charset))
                }

            }catch( e: IOException){
                Log.d("Debug"," IOException = "   e.message)
            }

        }
    }

CodePudding user response：

var uri = data

data is an Intent?. You are assigning it to a variable named uri, confusing both of us.

Change that to:

val uri = data?.data

Now, uri will be a Uri?. You can use that with your null check. And, from there, you can use contentResolver.openOutputStream(uri.toString()) to open the OutputStream.

This is also why you were running into a problem originally. You created a string representation of an Intent, then tried parsing that as as Uri, which is not going to work.