413 lines
11 KiB
Dart
413 lines
11 KiB
Dart
import 'dart:math';
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import 'package:flutter/material.dart';
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import 'package:package_info_plus/package_info_plus.dart';
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int getRandomWithNum(int min, int max) {
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final random = Random();
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return random.nextInt(max) + min; // 生成随机数
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}
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double screenWidth(BuildContext context) {
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double screenWidth = MediaQuery.of(context).size.width;
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return screenWidth;
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}
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Future<T?> pushPage<T>(Widget page, BuildContext context) {
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return Navigator.push<T>(
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context,
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MaterialPageRoute(builder: (_) => page),
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);
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}
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void present(Widget page, BuildContext context) {
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Navigator.of(context).push(
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PageRouteBuilder(
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pageBuilder: (context, animation, secondaryAnimation) => page,
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transitionDuration: Duration.zero,
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reverseTransitionDuration: Duration.zero,
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),
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);
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}
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void presentOpaque(Widget page, BuildContext context) {
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Navigator.of(context).push(
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PageRouteBuilder(
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opaque: false, // 允许下层透出
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barrierColor: Colors.black.withOpacity(0.5), //路由遮罩色
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pageBuilder: (context, animation, secondaryAnimation) => page,
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transitionDuration: Duration.zero,
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reverseTransitionDuration: Duration.zero,
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),
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);
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}
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class FocusHelper {
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static final FocusNode _emptyNode = FocusNode();
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/// 延迟一帧后再移交焦点，避免不生效的问题
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static void clearFocus(BuildContext context) {
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WidgetsBinding.instance.addPostFrameCallback((_) {
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FocusScope.of(context).requestFocus(_emptyNode);
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});
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}
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}
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/// 文本样式工具类，返回 Text Widget
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class HhTextStyleUtils {
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/// 主要标题，返回 Text
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/// [text]: 文本内容
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/// [color]: 文本颜色，默认黑色
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/// [fontSize]: 字体大小，默认16.0
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/// [bold]: 是否加粗，默认true
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static Text mainTitle(
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String text, {
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Color color = Colors.black,
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double fontSize = 16.0,
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bool bold = true,
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}) {
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return Text(
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text,
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style: TextStyle(
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color: color,
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fontSize: fontSize,
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fontWeight: bold ? FontWeight.bold : FontWeight.normal,
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),
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);
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}
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static TextStyle secondaryTitleStyle = TextStyle(
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color: Colors.black54,
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fontSize: 15.0,
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);
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/// 次要标题，返回 Text
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/// [text]: 文本内容
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/// [color]: 文本颜色，默认深灰
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/// [fontSize]: 字体大小，默认14.0
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/// [bold]: 是否加粗，默认false
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static Text secondaryTitle(
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String text, {
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Color color = Colors.black54,
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double fontSize = 14.0,
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bool bold = false,
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}) {
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return Text(
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text,
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style: TextStyle(
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color: color,
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fontSize: fontSize,
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fontWeight: bold ? FontWeight.bold : FontWeight.normal,
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),
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);
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}
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/// 小文字，返回 Text
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/// [text]: 文本内容
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/// [color]: 文本颜色，默认灰色
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/// [fontSize]: 字体大小，默认12.0
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/// [bold]: 是否加粗，默认false
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static Text smallText(
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String text, {
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Color color = Colors.black54,
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double fontSize = 12.0,
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bool bold = false,
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}) {
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return Text(
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text,
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style: TextStyle(
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color: color,
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fontSize: fontSize,
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fontWeight: bold ? FontWeight.bold : FontWeight.normal,
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),
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);
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}
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}
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/// 版本信息模型类
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class AppVersionInfo {
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final String versionName; // 版本名称（如 1.0.0）
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final String buildNumber; // 构建号（如 1）
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final String fullVersion; // 完整版本（如 1.0.0+1）
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AppVersionInfo({
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required this.versionName,
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required this.buildNumber,
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required this.fullVersion,
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});
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@override
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String toString() {
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return fullVersion;
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}
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}
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// 获取应用版本信息的方法
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Future<AppVersionInfo> getAppVersion() async {
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try {
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final packageInfo = await PackageInfo.fromPlatform();
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return AppVersionInfo(
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versionName: packageInfo.version,
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buildNumber: packageInfo.buildNumber,
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fullVersion: '${packageInfo.version}+${packageInfo.buildNumber}',
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);
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} catch (e) {
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// 获取失败时返回默认值
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return AppVersionInfo(
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versionName: '1.0.0',
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buildNumber: '1',
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fullVersion: '1.0.0+0',
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);
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}
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}
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/// ------------------------------------------------------
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/// 全局会话管理
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/// ------------------------------------------------------
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class SessionService {
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SessionService._();
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static final SessionService instance = SessionService._();
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String? corpinfoId;
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String? loginUserId;
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Map<String, dynamic>? loginUser;
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String? deptId;
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String? deptLevel;
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String? postId;
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String? username;
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String? version;
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String? basePath;
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String? isRest;
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List<dynamic>? permission;
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bool updateInfo = false;
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String? dangerJson;
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String? riskJson;
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String? departmentJsonStr;
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String? departmentHiddenTypeJsonStr;
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String? customRecordDangerJson;
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String? unqualifiedInspectionItemID;
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String? listItemNameJson;
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/// 如果以下任何一项为空，则跳转到登录页
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void loginSession(BuildContext context) {
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if (corpinfoId == null || loginUserId == null || loginUser == null) {
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Navigator.pushReplacementNamed(context, '/login');
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}
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}
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// setters
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void setLoginUser(Map<String, dynamic> user) => loginUser = user;
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void setLoginUserId(String id) => loginUserId = id;
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void setCorpinfoId(String id) => corpinfoId = id;
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void setDeptId(String id) => deptId = id;
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void setDeptLevel(String level) => deptLevel = level;
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void setPostId(String id) => postId = id;
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void setUsername(String name) => username = name;
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void setVersion(String ver) => version = ver;
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void setBasePath(String url) => basePath = url;
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void setIsRest(String rest) => isRest = rest;
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void setPermission(List<dynamic> list) => permission = list;
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void setUpdateInfo(bool flag) => updateInfo = flag;
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void setDangerWaitInfo(String json) => dangerJson = json;
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void setRiskWaitInfo(String json) => riskJson = json;
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void setDepartmentJsonStr(String json) => departmentJsonStr = json;
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void setCustomRecordDangerJson(String json) => customRecordDangerJson = json;
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void setUnqualifiedInspectionItemIDJson(String json) => unqualifiedInspectionItemID = json;
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void setListItemNameJson(String json) => listItemNameJson = json;
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}
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/// ------------------------------------------------------
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/// 日期格式化
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/// ------------------------------------------------------
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String formatDate(DateTime? date, String fmt) {
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if (date == null) return '';
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String twoDigits(int n) => n.toString().padLeft(2, '0');
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final replacements = <String, String>{
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'yyyy': date.year.toString(),
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'yy': date.year.toString().substring(2),
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'MM': twoDigits(date.month),
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'M': date.month.toString(),
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'dd': twoDigits(date.day),
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'd': date.day.toString(),
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'hh': twoDigits(date.hour),
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'h': date.hour.toString(),
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'mm': twoDigits(date.minute),
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'm': date.minute.toString(),
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'ss': twoDigits(date.second),
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's': date.second.toString(),
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};
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String result = fmt;
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replacements.forEach((key, value) {
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result = result.replaceAllMapped(RegExp(key), (_) => value);
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});
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return result;
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}
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/// ------------------------------------------------------
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/// 防多次点击
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/// ------------------------------------------------------
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class ClickUtil {
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ClickUtil._();
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static bool _canClick = true;
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/// 调用示例：
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/// ClickUtil.noMultipleClicks(() { /* your code */ });
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static void noMultipleClicks(VoidCallback fn, {int delayMs = 2000}) {
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if (_canClick) {
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_canClick = false;
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fn();
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Future.delayed(Duration(milliseconds: delayMs), () {
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_canClick = true;
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});
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} else {
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debugPrint('请稍后点击');
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}
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}
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}
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void presentPage(BuildContext context, Widget page) {
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Navigator.push(
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context,
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MaterialPageRoute(fullscreenDialog: true, builder: (_) => page),
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);
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}
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class LoadingDialogHelper {
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// 保存对话框自己的 context
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static BuildContext? _dialogContext;
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static void show(BuildContext context, {String? message}) {
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showDialog(
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context: context,
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barrierDismissible: false,
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builder: (dialogContext) {
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// 存下来，后面 hide 时一定用它
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_dialogContext = dialogContext;
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return Center(
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child: Container(
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padding: EdgeInsets.all(20),
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decoration: BoxDecoration(
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color: Colors.black87,
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borderRadius: BorderRadius.circular(8),
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),
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child: Column(
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mainAxisSize: MainAxisSize.min,
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children: [
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const CircularProgressIndicator(
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valueColor: AlwaysStoppedAnimation(Colors.white),
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),
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if (message != null) ...[
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const SizedBox(height: 12),
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Text(
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message,
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style: TextStyle(color: Colors.white),
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),
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],
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],
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),
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),
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);
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},
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);
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}
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static void hide(BuildContext context) {
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if (_dialogContext != null && Navigator.canPop(_dialogContext!)) {
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Navigator.of(_dialogContext!).pop();
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_dialogContext = null;
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}
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}
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}
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/// 将秒数转换为 “HH:MM:SS” 格式
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String secondsCount(dynamic seconds) {
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// 先尝试解析出一个 double 值
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double totalSeconds;
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if (seconds == null) {
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totalSeconds = 0;
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} else if (seconds is num) {
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totalSeconds = seconds.toDouble();
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} else {
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// seconds 是字符串或其他，尝试 parse
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totalSeconds = double.tryParse(seconds.toString()) ?? 0.0;
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}
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// 取整秒，向下取整
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final int secs = totalSeconds.floor();
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final int h = (secs ~/ 3600) % 24;
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final int m = (secs ~/ 60) % 60;
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final int s = secs % 60;
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// padLeft 保证两位数
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final String hh = h.toString().padLeft(2, '0');
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final String mm = m.toString().padLeft(2, '0');
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final String ss = s.toString().padLeft(2, '0');
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return '$hh:$mm:$ss';
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}
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void printLongString(String text, {int chunkSize = 800}) {
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final pattern = RegExp('.{1,$chunkSize}'); // 每 chunkSize 个字符一组
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for (final match in pattern.allMatches(text)) {
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print(match.group(0));
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}
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}
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/// 表单处理
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class FormUtils {
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/// 判断 [data] 中的 [key] 是否存在“有效值”：
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/// - key 不存在或值为 null -> false
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/// - String：去掉首尾空白后非空 -> true
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/// - Iterable / Map：非空 -> true
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/// - 其它类型（int、double、bool 等）只要不为 null 就算有值 -> true
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static bool hasValue(Map<String, dynamic> data, String key) {
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if (!data.containsKey(key)) return false;
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final val = data[key];
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if (val == null) return false;
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if (val is String) {
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return val.trim().isNotEmpty;
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}
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if (val is Iterable || val is Map) {
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return val.isNotEmpty;
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}
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// 数字、布尔等其它非空即可
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return true;
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}
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}
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class NoDataWidget {
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static Widget show() {
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return Center(
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child: Column(
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mainAxisAlignment: MainAxisAlignment.center,
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children: [
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Image.asset('assets/images/null.png', width: 200,),
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Text('暂无数据', style: TextStyle(color: Colors.grey)),
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],
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),
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);
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}
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} |