如何将照片添加到kotlin中的android内置库？

<uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE" />

val permission = Manifest.permission.READ_EXTERNAL_STORAGE
if (ContextCompat.checkSelfPermission(this, permission) != PackageManager.PERMISSION_GRANTED) {
    ActivityCompat.requestPermissions(this, arrayOf(permission), REQUEST_CODE)
} else {
    // 已经获得授权，可以继续操作
}

val intent = Intent(Intent.ACTION_PICK, MediaStore.Images.Media.EXTERNAL_CONTENT_URI)
startActivityForResult(intent, REQUEST_CODE)

override fun onActivityResult(requestCode: Int, resultCode: Int, data: Intent?) {
    super.onActivityResult(requestCode, resultCode, data)
    if (requestCode == REQUEST_CODE && resultCode == Activity.RESULT_OK && data != null) {
        val selectedImageUri: Uri = data.data
        imageView.setImageURI(selectedImageUri)
    }
}