Flutter 枚举值enum和int互相转化总结

/// PageView 滚动方式
enum PageViewScrollType {
  /// 整屏滑动
  full,
  /// 拖拽滑动
  drag,
  /// 禁用滑动
  none,
}
extension PageViewScrollType_IntExt on int{
  /// int 转枚举
  PageViewScrollType? toPageViewScrollType([bool isClamp = true]){
    final allCases = PageViewScrollType.values;
    if (!isClamp) {
      if (this < 0 || this > allCases.length - 1) {
        return null;
      }
      return allCases[this];
    }
    final index = this.clamp(0, allCases.length - 1);
    return allCases[index];
  }
  /// int 转枚举
  PageViewScrollType get pageViewScrollType{
    final allCases = PageViewScrollType.values;
    // final index = this.clamp(0, allCases.length - 1);
    // return allCases[index];
    return this.toPageViewScrollType(true) ?? allCases.first;
  }
}

print("枚举值索引: ${PageViewScrollType.full.index}");
print("枚举值字符串: ${PageViewScrollType.drag.toString()}");
print("枚举集合: ${PageViewScrollType.values}");
print("int 转枚举: ${0.toPageViewScrollType()}");