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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,158 @@ | ||
| import 'dart:io'; | ||
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| import 'package:flutter/cupertino.dart'; | ||
| import 'package:flutter/material.dart'; | ||
| import 'package:flutter/services.dart'; | ||
| import 'package:permission_handler/permission_handler.dart'; | ||
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| /// 创建人： Created by zhaolong | ||
| /// 创建时间：Created by on 2020/12/9. | ||
| /// | ||
| /// 可关注公众号：我的大前端生涯 获取最新技术分享 | ||
| /// 可关注网易云课堂：https://study.163.com/instructor/1021406098.htm | ||
| /// 可关注博客：https://blog.csdn.net/zl18603543572 | ||
| /// | ||
| /// 代码清单 | ||
| ///权限请求模版 | ||
| class PermissionRequestWidget extends StatefulWidget { | ||
| final Permission permission; | ||
| final List<String> permissionList; | ||
| final bool isCloseApp; | ||
| final String leftButtonText; | ||
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| PermissionRequestWidget( | ||
| {@required this.permission, | ||
| @required this.permissionList, | ||
| this.leftButtonText = "再考虑一下", | ||
| this.isCloseApp = false}); | ||
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| @override | ||
| _PermissionRequestWidgetState createState() => | ||
| _PermissionRequestWidgetState(); | ||
| } | ||
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| class _PermissionRequestWidgetState extends State<PermissionRequestWidget> | ||
| with WidgetsBindingObserver { | ||
| //页面的初始化函数 | ||
| @override | ||
| void initState() { | ||
| super.initState(); | ||
| checkPermisson(); | ||
| //注册观察者 | ||
| WidgetsBinding.instance.addObserver(this); | ||
| } | ||
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| @override | ||
| void didChangeAppLifecycleState(AppLifecycleState state) { | ||
| super.didChangeAppLifecycleState(state); | ||
| if (state == AppLifecycleState.resumed && _isGoSetting) { | ||
| checkPermisson(); | ||
| } | ||
| } | ||
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| void checkPermisson({PermissionStatus status}) async { | ||
| //权限 | ||
| Permission permission = widget.permission; | ||
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| if (status == null) { | ||
| //权限状态 | ||
| status = await permission.status; | ||
| } | ||
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| if (status.isUndetermined) { | ||
| //第一次申请 | ||
| showPermissonAlert(widget.permissionList[0], "同意", permission); | ||
| } else if (status.isDenied) { | ||
| if (Platform.isIOS) { | ||
| showPermissonAlert(widget.permissionList[2], "去设置中心", permission, | ||
| isSetting: true); | ||
| return; | ||
| } | ||
| //用户第一次申请拒绝 | ||
| showPermissonAlert(widget.permissionList[1], "重试", permission); | ||
| } else if (status.isPermanentlyDenied) { | ||
| //第二次申请 用户拒绝 | ||
| showPermissonAlert(widget.permissionList[2], "去设置中心", permission, | ||
| isSetting: true); | ||
| } else { | ||
| //通过 | ||
| Navigator.of(context).pop(true); | ||
| } | ||
| } | ||
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| //是否去设置中心 | ||
| bool _isGoSetting = false; | ||
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| void showPermissonAlert( | ||
| String message, String rightString, Permission permission, | ||
| {bool isSetting = false}) { | ||
| showCupertinoDialog( | ||
| builder: (BuildContext context) { | ||
| return CupertinoAlertDialog( | ||
| title: Text("温馨提示"), | ||
| content: Container( | ||
| padding: EdgeInsets.all(12), | ||
| child: Text(message), | ||
| ), | ||
| actions: [ | ||
| //左边的按钮 | ||
| CupertinoDialogAction( | ||
| child: Text("${widget.leftButtonText}"), | ||
| onPressed: () { | ||
| if (widget.isCloseApp) { | ||
| closeApp(); | ||
| } else { | ||
| Navigator.of(context).pop(false); | ||
| } | ||
| }, | ||
| ), | ||
| //右边的按钮 | ||
| CupertinoDialogAction( | ||
| child: Text("$rightString"), | ||
| onPressed: () { | ||
| //关闭弹框 | ||
| Navigator.of(context).pop(); | ||
| if (isSetting) { | ||
| _isGoSetting = true; | ||
| //去设置中心 | ||
| openAppSettings(); | ||
| } else { | ||
| //申请权限 | ||
| requestPermiss(permission); | ||
| } | ||
| }, | ||
| ) | ||
| ], | ||
| ); | ||
| }, | ||
| context: context); | ||
| } | ||
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| void requestPermiss(Permission permission) async { | ||
| //发起权限申请 | ||
| PermissionStatus status = await permission.request(); | ||
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| //校验 | ||
| checkPermisson(); | ||
| } | ||
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| void closeApp() { | ||
| //关闭应用的方法 | ||
| SystemChannels.platform.invokeMethod("SystemNavigator.pop"); | ||
| } | ||
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| @override | ||
| void dispose() { | ||
| //注销观察者 | ||
| WidgetsBinding.instance.removeObserver(this); | ||
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| super.dispose(); | ||
| } | ||
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| @override | ||
| Widget build(BuildContext context) { | ||
| return Scaffold( | ||
| backgroundColor: Colors.transparent, | ||
| ); | ||
| } | ||
| } |