Flutter Android 项目遇见的问题

Gradle build failed to produce an .apk

是否设置了flavor了 flutter run --flavor replace_your_flavor_name , 或者在选择入口文件main.dart选项中选择Edit Configurations , Build flavor中填入你的flavor
是否改变了apk文件输出路径
参考资料

插件注册两次或者addActivityResultListener回调两次

插件被Flutter注册了两次，debug排查下就好了

GestureDetector点击空白区域无效

/// How to behave during hit tests.
enum HitTestBehavior {
  /// Targets that defer to their children receive events within their bounds
  /// only if one of their children is hit by the hit test.
  deferToChild,

  /// Opaque targets can be hit by hit tests, causing them to both receive
  /// events within their bounds and prevent targets visually behind them from
  /// also receiving events.
  opaque,

  /// Translucent targets both receive events within their bounds and permit
  /// targets visually behind them to also receive events.
  translucent,
}

TabController addListener 调用两次

查看源码

  void _changeIndex(int value, { Duration duration, Curve curve }) {
    assert(value != null);
    assert(value >= 0 && (value < length || length == 0));
    assert(duration != null || curve == null);
    assert(_indexIsChangingCount >= 0);
    if (value == _index || length < 2)
      return;
    _previousIndex = index;
    _index = value;
    if (duration != null) {
      _indexIsChangingCount += 1;
      notifyListeners(); // Because the value of indexIsChanging may have changed.
      _animationController
        .animateTo(_index.toDouble(), duration: duration, curve: curve)
        .whenCompleteOrCancel(() {
          _indexIsChangingCount -= 1;
          notifyListeners();
        });
    } else {
      _indexIsChangingCount += 1;
      _animationController.value = _index.toDouble();
      _indexIsChangingCount -= 1;
      notifyListeners();
    }
  }

在动画结束之后还会在调用notifyListeners(),所以会调用两次。

可以根据tabController.indexIsChanging来判断是否需要刷新

开发中的奇怪的现象

Mac AndroidStudio开发环境，偶尔会出现在无论你按什么键都没用，但是切到其他应用都正常，关闭再打开又正常了。下次碰见这种情况你可以看看你AndroidStudio的Terminal是不是正在输入，如果是，关掉就好了。

学习并实际开发中。。。后续继续更新碰见的问题

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