API 키를 Git으로 올리고 싶지 않습니다.

config 파일 만들기

const API_KEY = "aaaaaaaaaaaaaaaaaa";

import하여 사용

import '../config.dart';

class TopScreen extends StatelessWidget {

  getMovies() async {
    final url =
        'https://api.themoviedb.org/3/movie/now_playing?api_key=${API_KEY}&language=en-US&page=1';
    try {
      final response = await http.get(url);
      final extractedData = json.decode(response.body)['results'];
      if (extractedData == null) {
        print('nothing to get');
        return;
      }
      return extractedData;
    } catch (error) {
      print(error);
      throw (error);
    }
  }

// 省略

}

.gitignore에 config.dart 추가

# ↓これを追加
config.dart

# Miscellaneous
*.class
*.log
*.pyc
*.swp
.DS_Store
.atom/
.buildlog/
.history
.svn/

# IntelliJ related
*.iml
*.ipr
*.iws
.idea/

# The .vscode folder contains launch configuration and tasks you configure in
# VS Code which you may wish to be included in version control, so this line
# is commented out by default.
#.vscode/

# Flutter/Dart/Pub related
**/doc/api/
**/ios/Flutter/.last_build_id
.dart_tool/
.flutter-plugins
.flutter-plugins-dependencies
.packages
.pub-cache/
.pub/
/build/

# Web related
lib/generated_plugin_registrant.dart

# Symbolication related
app.*.symbols

# Obfuscation related
app.*.map.json

# Android Studio will place build artifacts here
/android/app/debug
/android/app/profile
/android/app/release