[error] cannot infer type arguments for ArrayAdapter<>

CallbackExecute에서 spinner에 바인드할 경우 발생


ArrayAdapter<String> spnAdp = new ArrayAdapter<>(this, R.layout.support_simple_spinner_dropdown_item, arrGroup);

다음과 같이 변경.

ArrayAdapter<String> spnAdp = new ArrayAdapter<>(SearchActivity.this, R.layout.support_simple_spinner_dropdown_item, arrGroup);