如何解决android配置变更时edittext中getLayout()方法为空的问题

@Override
protected void onSaveInstanceState(Bundle outState) {
    super.onSaveInstanceState(outState);
    outState.putCharSequence("editTextValue", editText.getText());
}

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);

    editText = findViewById(R.id.editText);

    if (savedInstanceState != null) {
        CharSequence editTextValue = savedInstanceState.getCharSequence("editTextValue");
        if (editTextValue != null) {
            editText.setText(editTextValue);
        }
    }
}