flutter - Flutter 特征发现 - 右侧的 DescribedFeatureOverlay

Question

我正在使用 feature_discovery 0.13.0+2。我正在尝试从右侧显示功能发现。例如动画来自右侧。现在当我尝试这个时，动画来自左侧并覆盖全屏。

 Scaffold(

      body: Container(
        alignment: Alignment.centerRight,
        child: DescribedFeatureOverlay(
          featureId: 'feature1',
          targetColor: Colors.white,
          textColor: Colors.black,
          backgroundColor: Colors.purpleAccent,
          contentLocation: ContentLocation.above,
          title: Text(
            'This is Button',
            style: TextStyle(fontSize: 20.0),
          ),
          pulseDuration: Duration(seconds: 1),
          enablePulsingAnimation: true,
          barrierDismissible: false,

          overflowMode: OverflowMode.extendBackground,
          openDuration: Duration(seconds: 1),
          description: Text('This is Button you can add more details heres'),
          tapTarget: Icon(Icons.radio_button_unchecked),
          child: RaisedButton(
            child: Text('Button'),
            onPressed: () {},
            color: Colors.green,
          ),
        ),
      ),
    )