import 'package:flutter/material.dart'; import 'package:permission_handler/permission_handler.dart'; import 'package:photo_manager/photo_manager.dart'; import 'package:shared/utils/device_utils.dart'; import 'package:shared/utils/log_utils.dart'; import 'package:widgets/dialog/app_default_dialog.dart'; import 'package:widgets/dialog/permission_desc_dialog.dart'; import '../dialog/dialog_engine.dart'; /* * 动态权限的申请与校验 */ class PermissionEngine { // 私有构造函数 PermissionEngine._privateConstructor(); // 单例实例 static final PermissionEngine _instance = PermissionEngine._privateConstructor(); // 获取单例实例的访问点 factory PermissionEngine() { return _instance; } /// 申请多媒体相册权限 void requestPhotosPermission(void Function() success) async { //相册的选项 if (DeviceUtils.isIOS) { //申请授权 final value = await PhotoManager.requestPermissionExtend(); if (value.hasAccess) { //已授权 Log.d("相册已授权"); success(); } else if (value == PermissionState.limited) { Log.d("相册访问受限,去设置受限"); PhotoManager.presentLimited(); } else { Log.d("相册无授权,去设置"); DialogEngine.show( widget: AppDefaultDialog( title: "提示", message: '无相册权限,前往设置', confirmAction: () { PhotoManager.openSetting(); }, ), ); } } else { //Android是否有SD卡权限 var status = await Permission.storage.status; late PermissionState ps; if (status.isGranted) { // 已经授权 success(); } else { // 未授权,则准备发起一次申请 var permissionRequestFuture = PhotoManager.requestPermissionExtend(); // 延迟500毫秒的Future var delayFuture = Future.delayed(Duration(milliseconds: 500), () => 'delay'); // 使用Future.any等待上述两个Future中的任何一个完成 var firstCompleted = await Future.any([permissionRequestFuture, delayFuture]); // 判断响应结果 if (firstCompleted == 'delay') { Log.d("判断响应结果:1"); // 如果是延迟Future完成了,表示500毫秒内没有获得权限响应,显示对话框 _showPermissionDialog("“YYBusiness”想访问你的多媒体相册 用于图片上传,图片保存等功能,请允许我获取您的权限"); // 再次等待权限请求结果 ps = await permissionRequestFuture; DialogEngine.dismiss(tag: "permission"); } else { Log.d("判断响应结果:2"); // 权限请求已完成,立刻取消对话框展示(如果已经展示的话) DialogEngine.dismiss(tag: "permission"); ps = firstCompleted as PermissionState; } if (ps.isAuth) { // 用户授权 success(); } else { // 权限被拒绝 await DialogEngine.show( widget: AppDefaultDialog( message: "请到您的手机设置打开相册的权限", title: "提醒", confirmAction: () { openAppSettings(); }), ); } } } } /// 申请相机权限 void requestCameraPermission(void Function() success) async { // 获取当前的权限 var status = await Permission.camera.status; if (status.isGranted) { // 已经授权 success(); } else { // 未授权,则准备发起一次申请 var permissionRequestFuture = Permission.camera.request(); // 延迟500毫秒的Future var delayFuture = Future.delayed(Duration(milliseconds: 500), () => 'delay'); // 使用Future.any等待上述两个Future中的任何一个完成 var firstCompleted = await Future.any([permissionRequestFuture, delayFuture]); // 判断响应结果 if (firstCompleted == 'delay') { // 如果是延迟Future完成了,表示500毫秒内没有获得权限响应,显示对话框 _showPermissionDialog("“YYBusiness”申请调用您的相机权限 用于使用拍摄头像,图片上传保存等功能,请允许我获取您的权限"); // 再次等待权限请求结果 status = await permissionRequestFuture; DialogEngine.dismiss(tag: "permission"); } else { // 权限请求已完成,立刻取消对话框展示(如果已经展示的话) DialogEngine.dismiss(tag: "permission"); status = firstCompleted as PermissionStatus; } if (status.isGranted) { // 用户授权 success(); } else { // 权限被拒绝 await DialogEngine.show( widget: AppDefaultDialog( message: "请到您的手机设置打开相机的权限", title: "提醒", confirmAction: () { openAppSettings(); }), ); } } } /// 校验并申请定位权限 Future requestLocationPermission() async { // 获取当前的权限 var status = await Permission.location.status; if (status.isGranted) { // 已经授权 return true; } else { // 未授权,则准备发起一次申请 var permissionRequestFuture = Permission.location.request(); // 延迟500毫秒的Future var delayFuture = Future.delayed(Duration(milliseconds: 500), () => 'delay'); // 使用Future.any等待上述两个Future中的任何一个完成 var firstCompleted = await Future.any([permissionRequestFuture, delayFuture]); // 判断响应结果 if (firstCompleted == 'delay') { // 如果是延迟Future完成了,表示500毫秒内没有获得权限响应,显示对话框 _showPermissionDialog("“YYBusiness”想访问您的定位权限获取您的位置来推荐附近的工作"); // 再次等待权限请求结果 status = await permissionRequestFuture; DialogEngine.dismiss(tag: "permission"); } else { Log.d("权限请求已完成,立刻取消对话框展示"); // 权限请求已完成,立刻取消对话框展示(如果已经展示的话) DialogEngine.dismiss(tag: "permission"); status = firstCompleted as PermissionStatus; } if (status.isGranted) { // 用户授权 return true; } else { // 权限被拒绝 await DialogEngine.show( widget: AppDefaultDialog( message: "请到您的手机设置打开定位的权限", title: "提醒", confirmAction: () { openAppSettings(); }), ); return false; } } } //顶部展示权限声明详情弹窗 void _showPermissionDialog(String desc) { DialogEngine.show( clickMaskDismiss: false, backDismiss: true, tag: "permission", maskColor: Colors.transparent, widget: PermissionDescDialog(desc), ); } }