红蓝爆闪

gistfile1.txt

import 'dart:async';

import 'package:flutter/material.dart';
import 'package:flutter_screenutil/flutter_screenutil.dart';

/**
 *  红蓝爆闪
 */
class RedBlue extends StatefulWidget {
  const RedBlue({super.key});

  @override
  State<RedBlue> createState() => _RedBlueState();
}

class _RedBlueState extends State<RedBlue> {
  @override
  void initState() {
    super.initState();
  }

  @override
  Widget build(BuildContext context) {
    return _body();
  }

  Widget _body() {
    return Scaffold(
        body: GestureDetector(
      child: Column(
        children: [
          Container(
            height: ScreenUtil().screenHeight / 2,
            // width: MediaQuery.of(context).size.width,
            width: ScreenUtil().screenWidth,
            color: red,
          ),
          Container(
            height: ScreenUtil().screenHeight / 2,
            // width: MediaQuery.of(context).size.width,
            width: ScreenUtil().screenWidth,
            color: blue,
          ),
        ],
      ),
      onTap: _allClick,
    ));
  }

  bool _isRed = false;
  Color closeLed = Colors.yellowAccent;

  Color? red = Colors.red;
  Color? blue = Colors.blue;
  bool _isRun = false;
  // late Timer _timer;
  final int _timeDistance = 100;

  _allClick() {
    _flashBlue();
  }

/*
 无限交替方案
 */
  _startFlash() {
    if (_isRed) {
      //   亮红的
      _closeBlue();
      _showRed();
    } else {
      //  亮蓝的
      _showBlue();
      _closeRed();
    }
    _isRed = !_isRed;
    setState(() {});
  }

  /**
   *  单色交替循环 次数
   */
  final int singleTimes = 2;
  int singleTimess = 0;

  /**
   *  aabbaabb abab
   *
   *  bb--rr
   */
  _flashBlue() {
    Future.delayed(Duration(milliseconds: _timeDistance), () {
      blue = Colors.blue;
      if (mounted) {
        setState(() {});
      }
      Future.delayed(Duration(milliseconds: _timeDistance), () {
        _closeBlue();

        Future.delayed(Duration(milliseconds: _timeDistance), () {
          blue = Colors.blue;
          if (mounted) {
            setState(() {});
          }
          Future.delayed(Duration(milliseconds: _timeDistance), () {
            _closeBlue();
            _flashred2();
          });
        });
      });
    });
    // 亮红的两次

    if (!_exit) {
      _isRun = false;
    } else {
      _isRun = true;
      // _exit = true;
    }
  }

  /**
   * rr -- bb
   */
  _flashred2() {
    if (!_exit) {
      Future.delayed(Duration(milliseconds: _timeDistance), () {
        red = Colors.red;
        if (mounted) {
          setState(() {});
        }
        Future.delayed(Duration(milliseconds: _timeDistance), () {
          _closeRed();
          Future.delayed(Duration(milliseconds: _timeDistance), () {
            red = Colors.red;
            if (mounted) {
              setState(() {});
            }
            Future.delayed(Duration(milliseconds: _timeDistance), () {
              _closeRed();
              singleTimess++;

              if (singleTimess < singleTimes) {
                _flashBlue();
              } else {
                singleTimess = 0; // 单词爆闪归零
                _flashrb();
              }
            });
          });
        });
      });
    }
  }

  /**
   *  红蓝一起亮
   */
  final int _recycleTimes = 6;
  int countRec = 0;

  _flashrb() {
    Future.delayed(Duration(milliseconds: _timeDistance), () {
      red = Colors.red;
      blue = Colors.blue;
      Future.delayed(Duration(milliseconds: _timeDistance), () {
        _closeRed();
        _closeBlue();
      });
      countRec++;
      print("次数 $countRec");
      if (countRec < _recycleTimes) {
        Future.delayed(Duration(milliseconds: _timeDistance), () {
          _flashrb(); //不到4 就递归
        });
      } else {
        countRec = 0;
        _flashBlue(); // 全亮4次后重新开始单色爆闪
      }
      if (mounted) {
        setState(() {});
      }
      // _flash1();
    });
  }

  _showRed() {
    Future.delayed(Duration(milliseconds: _timeDistance), () {
      red = Colors.red;
      if (mounted) {
        setState(() {});
      }
      Future.delayed(Duration(milliseconds: _timeDistance), () {
        _closeRed();
      });
    });
    if (!_isRun) {}
  }

  _closeRed() {
    // red = Color(0xFFAB130B);
    red = closeLed;
    if (mounted) {
      setState(() {});
    }
  }

  /**
   *  设为 true  停止所有
   */
  bool _exit = false;

  _showBlue() {
    Future.delayed(Duration(milliseconds: _timeDistance), () {
      blue = Colors.blue;
      if (mounted) {
        setState(() {});
      }
      Future.delayed(Duration(milliseconds: _timeDistance), () {
        _closeBlue();
        blue = Colors.blue;
      });
    });
    if (!_isRun) {}
  }

  _closeBlue() {
    // blue = Color(0xFF040C88);
    blue = closeLed;
    if (mounted) {
      setState(() {});
    }
  }

  @override
  void dispose() {
    _exit = true;
    print("退出 $_exit");
    super.dispose();
  }
}