I have a small application that wraps a website that processes pictures. I can not upload more than 5 pictures from my phone, the application crashes with error:
java.lang.OutOfMemoryError: Failed to allocate a xxxxx byte allocation.

How do I optimize memory management? I would greatly appreciate any advice.

   override fun onActivityResult(requestCode: Int, resultCode: Int, data: Intent?) {         super.onActivityResult(requestCode, resultCode, data)          if (requestCode == PICK_IMAGE_REQUEST_CODE && resultCode == RESULT_OK) {             val selectedImageBlobs = mutableListOf<Triple<String, String, String>>()              if (data?.clipData != null) {                 val clipData = data.clipData                 for (i in 0 until clipData!!.itemCount) {                     val uri = clipData.getItemAt(i).uri                     val base64Image = convertUriToBase64(uri)                     val mimeType = contentResolver.getType(uri)                     val fileName = getFileNameWithExtension(uri)                     if (base64Image != null && mimeType != null && fileName.isNotEmpty()) {                         selectedImageBlobs.add(Triple(base64Image, mimeType, fileName))                     }                 }             } else {                 val uri = data?.data                 if (uri != null) {                     val base64Image = convertUriToBase64(uri)                     val mimeType = contentResolver.getType(uri)                     val fileName = getFileNameWithExtension(uri)                     if (base64Image != null && mimeType != null && fileName.isNotEmpty()) {                         selectedImageBlobs.add(Triple(base64Image, mimeType, fileName))                     }                 }             }              // Send selected image blobs, MIME types, and filenames to JSBridge             jsBridge.sendImagePaths(selectedImageBlobs)         }     }

This function is where the image data is read from the device’s storage, converted to a Base64 string, and returned(consuming a significant amount of memory

 private fun convertUriToBase64(uri: Uri): String? {
        return try {
            val inputStream: InputStream? = contentResolver.openInputStream(uri)
            val byteArrayOutputStream = ByteArrayOutputStream()
            val buffer = ByteArray(1024)
            var bytesRead: Int

            while (inputStream!!.read(buffer).also { bytesRead = it } != -1) {
                byteArrayOutputStream.write(buffer, 0, bytesRead)
            }

            val byteArray = byteArrayOutputStream.toByteArray()
            Base64.encodeToString(byteArray, Base64.DEFAULT)
        } catch (e: Exception) {
            e.printStackTrace()
            null
        }
    }

And then I send data:

    private inner class JSBridge(val context: Context, private val webView: WebView) {
        fun sendData(imageFiles: List<Triple<String, String, String>>) {
            val jsonArray = JSONArray()

            for (imageFile in imageFiles) {
                val jsonObject = JSONObject()
                jsonObject.put("type", imageFile.second)
                jsonObject.put("name", imageFile.third)
                jsonObject.put("blob", imageFile.first)
                jsonArray.put(jsonObject)
            }

            val jsonData = """
                {
                    "method": "upload_files_from_app",
                    "result": {
                        "imageFiles": $jsonArray
                    }
                }
            """.trimIndent()

            val jsonObject = JSONObject(jsonData)
            val jsonObjectString = jsonObject.toString()
            Log.d("WebViewBridge", "JSBridge JSON Object: $jsonObjectString")

            // Call JavaScript function with JSON data
            webView.evaluateJavascript("javascript: window.mobile2web.onMessage($jsonObjectString)", null)
        }