error: cannot resolve constructor

 

context에서  cannot resolve constructor 오류 해결법

 

 

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

 

this 대신 getApplicationContext() 사용

1	ArrayAdapter<String> spnAdp = new ArrayAdapter<>(getApplicationContext(), R.layout.support_simple_spinner_dropdown_item, lstPhoneNo);

 

이러면, 작동 안될 때가 있음. 그럴 때는 외부 메서드로 변경. 왜 이러는지는 모르겠음.

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private void spinnerDataSetting(ArrayList<String> itemList) {     ArrayAdapter<String> spnAdp = new ArrayAdapter<>(this, R.layout.support_simple_spinner_dropdown_item, itemList);     spnPhoneNo.setAdapter(spnAdp);     spnPhoneNo.setSelection(1); }