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Flutter Programming
유동환님의 플러터책보고 공공API 앱을 따라해 보고 있습니다.
( Android , 갤탭)
Issue : 지하철실시간정보 ( page_subway_info.dart ) 를 따라하는 과정에서 , 지하철역 이름을 전혀 엉뚱하게 입력해 응답된 data가 없는 경우의 처리부가 전혀 동작되고 있지 않습니다.
step 1 : 광화문 , 시청등 입력 ( 정상 )
step 2: 뉴욕역 입력 -> error
[ERROR:flutter/lib/ui/ui_dart_state.cc(157)] Unhandled Exception: NoSuchMethodError: The method '[]' was called on null.
Receiver: null
Tried calling:
....<생략>....
감사합니다.
책 잘 보고 있습니다.
실습중에 오류가 있어 문의를 드립니다.
162 페이지 5.2 동적 routes 활용 부분에서 아래 부분을 해결하지 못해 이슈를 올립니다.
오류발생
Contact c = settings.arguments;
오류내용
A value of type 'Object?' can't be assigned to a variable of type 'Contact'. (Documentation) Try changing the type of the variable, or casting the right-hand type to 'Contact'.
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