Flutter: GestureDetector 동작은 내부 Container 속성에 따라 다릅니다.

번식 단계

패딩이 있는 컨테이너를 포함하는 두 개의 GestureDetector가 있습니다.
유일한 차이점은 내부 컨테이너에 색상 속성이 있는지 여부입니다.

아이콘 주변의 공간을 탭합니다. 즉, 패딩 영역을 탭합니다.

• 컨테이너에 색상이 있음: onTap이 호출됨
• 컨테이너에 색상이 없습니다. onTap이 호출되지 않습니다.

import 'package:flutter/foundation.dart';
import 'package:flutter/rendering.dart';
import 'package:flutter/material.dart';

void main() {
  final GlobalKey<ScaffoldState> _key = new GlobalKey<ScaffoldState>();
  runApp(new MaterialApp(
    title: 'GestureDetector Test',
    home: new Builder(builder: (BuildContext context) {
      return new Scaffold(
        key: _key,
        appBar: new AppBar(title: new Text("GestureDetector Test")),
        body: new Column(
          children: <Widget>[
            new Container(
              child: new GestureDetector(
                onTap: () {
                  _key.currentState.showSnackBar(new SnackBar(content: new Text("Foo!")));
                },
                child: new Container(
                  color: Colors.blue,
                  padding: const EdgeInsets.all(16.0),
                  child: const Icon(Icons.star, size: 32.0),
                ),
              )
            ),
            new Container(
              child: new GestureDetector(
                onTap: () {
                  _key.currentState.showSnackBar(new SnackBar(content: new Text("Bar!")));
                },
                child: new Container(
                  //color: Colors.blue, // no color
                  padding: const EdgeInsets.all(16.0),
                  child: const Icon(Icons.star, size: 32.0),
                ),
              )
            ),
          ],
        ),
      );
    }),
  ));
}

아이콘 자체를 탭하면 둘 다 onTap이 호출됩니다.

플러터 닥터

알파 0.0.20

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