startActivityForResult deprecated

before

        Intent intent;
        intent = new Intent(Intent.ACTION_GET_CONTENT);
        intent.setType("text/plain"); // MIME type for text files
        intent.addCategory(Intent.CATEGORY_OPENABLE);
        startActivityForResult(intent, READ_REQUEST_CODE);

 

after : define resultLauncher and start

 

ActivityResultLauncher<String> mGetContent =
        registerForActivityResult(new ActivityResultContracts.GetContent(), new ActivityResultCallback<Uri>() {
    @Override
    public void onActivityResult(Uri uri) {
        fileUrl = uri;
        where = readTextFileContent(uri);
        show_file();
    }
});
mGetContent.launch("text/plain");