小编123*_*765的帖子

假设我有一个笔记应用程序，我需要安全地存储用户的笔记。我可以将笔记以纯文本格式存储在 sqlite 数据库中吗？或者它们也应该在本地加密吗？

另外，我应该在将其发送到 Firestore 数据库之前对其进行加密吗？我研究过加密包，但很难理解。有这方面的好的教程吗？

如果我应该加密，我应该使用什么类型的加密？

Today when I updated Flutter I began to get an error with my paint method which had never caused any problems before:

@override
void paint(
    PaintingContext context,
    Offset center, {
    Animation<double> activationAnimation,
    Animation<double> enableAnimation,
    bool isDiscrete,
    TextPainter labelPainter,
    RenderBox parentBox,
    SliderThemeData sliderTheme,
    TextDirection textDirection,
    double value,
  }) {

This is the error:

error: 'CustomSlider.paint' ('void Function(PaintingContext, Offset, {Animation<double> activationAnimation, Animation<double> enableAnimation, bool isDiscrete, TextPainter labelPainter, RenderBox parentBox, SliderThemeData sliderTheme, TextDirection textDirection, double value})')
isn't a valid override of 'SliderComponentShape.paint' ('void …