我在运行时被要求获得用户的许可,但我需要请求多个权限,例如电话、联系人、短信等,所以我陷入了如何一个接一个地调用此方法的问题上,有什么办法可以询问之后一个权限完成了另一个弹出窗口的打开?
import 'package:permission_handler/permission_handler.dart';
class PermissionService{
final PermissionHandler _permissionHandler = PermissionHandler();
Future<bool> _requestPermissionContact(PermissionGroup permission) async {
var result = await _permissionHandler.requestPermissions([permission]);
if (result[PermissionGroup.contacts] == PermissionStatus.granted) {
print("sfhalsjfhas fasdhufaiusfh aloifahdf oalsifu");
}
}
Future<bool> requestContactPermission({Function onPermissionDenied}) async {
var granted = await _requestPermissionContact(PermissionGroup.contacts);
if (!granted) {
onPermissionDenied();
}
return granted;
}
Future<bool> hasContactPermission() async {
return hasPermission(PermissionGroup.contacts);
}
Future<bool> _requestPermissionSms(PermissionGroup permission) async {
var result = await _permissionHandler.requestPermissions([permission]);
if (result[permission] == PermissionStatus.granted) {
print("sfhalsjfhas fasdhufaiusfh aloifahdf oalsifu");
return true;
}
return false;
}
Future<bool> requestSmsPermission({Function onPermissionDenied}) async {
var granted = await _requestPermissionSms(PermissionGroup.sms);
if (!granted) {
onPermissionDenied();
}
return granted;
}
Future<bool> hasSmsPermission() async {
_requestPermissionPhone(PermissionGroup.phone);
return hasPermission(PermissionGroup.sms);
}
Future<bool> _requestPermissionPhone(PermissionGroup permission) async {
var result = await _permissionHandler.requestPermissions([permission]);
if (result[permission] == PermissionStatus.granted) {
return true;
}
return false;
}
Future<bool> requestPhonePermission({Function onPermissionDenied}) async {
var granted = await _requestPermissionPhone(PermissionGroup.phone);
if (!granted) {
onPermissionDenied();
}
return granted;
}
Future<bool> hasPhonePermission() async {
return hasPermission(PermissionGroup.phone);
}
Future<bool> hasPermission(PermissionGroup permission) async {
var permissionStatus =
await _permissionHandler.checkPermissionStatus(permission);
return permissionStatus == PermissionStatus.granted;
}
}
这是我的权限类,我想调用这三个权限,在 initState 中我被称为这样
@override
initState() {
permissionAcess();
permissionAcessSms();
permissionAcessPhone();
super.initState();
}
Future permissionAcess() {
PermissionService().requestContactPermission(onPermissionDenied: () {
print('Permission has been denied');
});
}
Future permissionAcessSms() {
PermissionService().requestSmsPermission(onPermissionDenied: () {
print('Permission has been denied');
});
}
Future permissionAcessPhone() {
PermissionService().requestPhonePermission(onPermissionDenied: () {
print('Permission has been denied');
});
}
但是它只调用了一个权限,那么如何在运行时调用所有这三个权限呢?
最佳答案
是的,您可以同时请求多个权限。只需更新您的 PermissionServices
类即可:
import 'package:permission_handler/permission_handler.dart';
class PermissionService{
final PermissionHandler _permissionHandler = PermissionHandler();
Future<bool> _requestPermission() async {
var result = await _permissionHandler.requestPermissions([PermissionGroup.phone,PermissionGroup.contacts,PermissionGroup.sms]);
if (result == PermissionStatus.granted) {
return true;
}
return false;
}
Future<bool> requestPermission({Function onPermissionDenied}) async {
var granted = await _requestPermission();
if (!granted) {
onPermissionDenied();
}
return granted;
}
Future<bool> hasPhonePermission() async {
return hasPermission(PermissionGroup.phone);
}
Future<bool> hasPermission(PermissionGroup permission) async {
var permissionStatus =
await _permissionHandler.checkPermissionStatus(permission);
return permissionStatus == PermissionStatus.granted;
}
}
还有你的initState
:
@override
initState(){
permissionAcessPhone();
super.initState();
}
Future permissionAcessPhone() {
PermissionService().requestPermission(onPermissionDenied: () {
print('Permission has been denied');
});
}
关于android - 如何在flutter中向用户请求多个权限?,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/61153382/