Flutter 在按下按钮或 onpressed 事件后授予摄像头和麦克风权限
Flutter give camera and microphone permissions after pressing button or on onpressed event
我需要通过单击按钮授予摄像头和麦克风权限。我希望我的权限一个接一个地出现,但在这种情况下,只出现麦克风权限。要授予相机权限,我必须再次按下按钮。
我怎样才能做到这一点?
import 'package:flutter/material.dart';
import 'package:flutter_inappwebview/flutter_inappwebview.dart';
import 'package:permission_handler/permission_handler.dart';
class IframeScreen extends StatefulWidget {
@override
_IframeScreenState createState() => _IframeScreenState();
}
class _IframeScreenState extends State<IframeScreen> {
InAppWebViewController _webViewController;
Future webViewMethod() async {
print('In Microphone permission method');
WidgetsFlutterBinding.ensureInitialized();
Permission.microphone.request();
WebViewMethodForCamera();
}
Future WebViewMethodForCamera() async{
print('In Camera permission method');
WidgetsFlutterBinding.ensureInitialized();
Permission.camera.request();
}
@override
Widget build(BuildContext context) {
return Scaffold(
appBar: AppBar(
title: Text('Check this frame'),
),
body: Column(
children: <Widget>[
RaisedButton(
onPressed: webViewMethod,
child: Text('Join'),
textColor: Colors.black,
),
Expanded(
child: Container(
child: InAppWebView(
initialUrl: "https://appr.tc/r/158489234",
initialOptions: InAppWebViewGroupOptions(
crossPlatform: InAppWebViewOptions(
mediaPlaybackRequiresUserGesture: false,
debuggingEnabled: true,
),
),
onWebViewCreated: (InAppWebViewController controller) {
_webViewController = controller;
},
androidOnPermissionRequest: (
InAppWebViewController controller, String origin,
List<String> resources) async {
return PermissionRequestResponse(resources: resources,
action: PermissionRequestResponseAction.GRANT);
}
),
),
)
],
)
);
}
}
正在尝试
await WebViewMethodForCamera();
您可以复制粘贴 运行 下面的完整代码
您可以等待 Permission.microphone.request();
和 await Permission.camera.request();
代码片段
Future webViewMethod() async {
print('In Microphone permission method');
//WidgetsFlutterBinding.ensureInitialized();
await Permission.microphone.request();
WebViewMethodForCamera();
}
Future WebViewMethodForCamera() async{
print('In Camera permission method');
//WidgetsFlutterBinding.ensureInitialized();
await Permission.camera.request();
}
工作演示
完整代码
import 'package:flutter/material.dart';
import 'package:flutter_inappwebview/flutter_inappwebview.dart';
import 'package:permission_handler/permission_handler.dart';
class IframeScreen extends StatefulWidget {
@override
_IframeScreenState createState() => _IframeScreenState();
}
class _IframeScreenState extends State<IframeScreen> {
InAppWebViewController _webViewController;
Future webViewMethod() async {
print('In Microphone permission method');
//WidgetsFlutterBinding.ensureInitialized();
await Permission.microphone.request();
WebViewMethodForCamera();
}
Future WebViewMethodForCamera() async{
print('In Camera permission method');
//WidgetsFlutterBinding.ensureInitialized();
await Permission.camera.request();
}
@override
Widget build(BuildContext context) {
return Scaffold(
appBar: AppBar(
title: Text('Check this frame'),
),
body: Column(
children: <Widget>[
RaisedButton(
onPressed: webViewMethod,
child: Text('Join'),
textColor: Colors.black,
),
Expanded(
child: Container(
child: InAppWebView(
initialUrl: "https://appr.tc/r/158489234",
initialOptions: InAppWebViewGroupOptions(
crossPlatform: InAppWebViewOptions(
mediaPlaybackRequiresUserGesture: false,
debuggingEnabled: true,
),
),
onWebViewCreated: (InAppWebViewController controller) {
_webViewController = controller;
},
androidOnPermissionRequest: (
InAppWebViewController controller, String origin,
List<String> resources) async {
return PermissionRequestResponse(resources: resources,
action: PermissionRequestResponseAction.GRANT);
}
),
),
)
],
)
);
} }
void main() {
runApp(MyApp());
}
class MyApp extends StatelessWidget {
@override
Widget build(BuildContext context) {
return MaterialApp(
title: 'Flutter Demo',
theme: ThemeData(
primarySwatch: Colors.blue,
visualDensity: VisualDensity.adaptivePlatformDensity,
),
home: IframeScreen(),
);
}
}
class MyHomePage extends StatefulWidget {
MyHomePage({Key key, this.title}) : super(key: key);
final String title;
@override
_MyHomePageState createState() => _MyHomePageState();
}
class _MyHomePageState extends State<MyHomePage> {
int _counter = 0;
void _incrementCounter() {
setState(() {
_counter++;
});
}
@override
Widget build(BuildContext context) {
return Scaffold(
appBar: AppBar(
title: Text(widget.title),
),
body: Center(
child: Column(
mainAxisAlignment: MainAxisAlignment.center,
children: <Widget>[
Text(
'You have pushed the button this many times:',
),
Text(
'$_counter',
style: Theme.of(context).textTheme.headline4,
),
],
),
),
floatingActionButton: FloatingActionButton(
onPressed: _incrementCounter,
tooltip: 'Increment',
child: Icon(Icons.add),
),
);
}
}
我需要通过单击按钮授予摄像头和麦克风权限。我希望我的权限一个接一个地出现,但在这种情况下,只出现麦克风权限。要授予相机权限,我必须再次按下按钮。
我怎样才能做到这一点?
import 'package:flutter/material.dart';
import 'package:flutter_inappwebview/flutter_inappwebview.dart';
import 'package:permission_handler/permission_handler.dart';
class IframeScreen extends StatefulWidget {
@override
_IframeScreenState createState() => _IframeScreenState();
}
class _IframeScreenState extends State<IframeScreen> {
InAppWebViewController _webViewController;
Future webViewMethod() async {
print('In Microphone permission method');
WidgetsFlutterBinding.ensureInitialized();
Permission.microphone.request();
WebViewMethodForCamera();
}
Future WebViewMethodForCamera() async{
print('In Camera permission method');
WidgetsFlutterBinding.ensureInitialized();
Permission.camera.request();
}
@override
Widget build(BuildContext context) {
return Scaffold(
appBar: AppBar(
title: Text('Check this frame'),
),
body: Column(
children: <Widget>[
RaisedButton(
onPressed: webViewMethod,
child: Text('Join'),
textColor: Colors.black,
),
Expanded(
child: Container(
child: InAppWebView(
initialUrl: "https://appr.tc/r/158489234",
initialOptions: InAppWebViewGroupOptions(
crossPlatform: InAppWebViewOptions(
mediaPlaybackRequiresUserGesture: false,
debuggingEnabled: true,
),
),
onWebViewCreated: (InAppWebViewController controller) {
_webViewController = controller;
},
androidOnPermissionRequest: (
InAppWebViewController controller, String origin,
List<String> resources) async {
return PermissionRequestResponse(resources: resources,
action: PermissionRequestResponseAction.GRANT);
}
),
),
)
],
)
);
} }
正在尝试
await WebViewMethodForCamera();
您可以复制粘贴 运行 下面的完整代码
您可以等待 Permission.microphone.request();
和 await Permission.camera.request();
代码片段
Future webViewMethod() async {
print('In Microphone permission method');
//WidgetsFlutterBinding.ensureInitialized();
await Permission.microphone.request();
WebViewMethodForCamera();
}
Future WebViewMethodForCamera() async{
print('In Camera permission method');
//WidgetsFlutterBinding.ensureInitialized();
await Permission.camera.request();
}
工作演示
完整代码
import 'package:flutter/material.dart';
import 'package:flutter_inappwebview/flutter_inappwebview.dart';
import 'package:permission_handler/permission_handler.dart';
class IframeScreen extends StatefulWidget {
@override
_IframeScreenState createState() => _IframeScreenState();
}
class _IframeScreenState extends State<IframeScreen> {
InAppWebViewController _webViewController;
Future webViewMethod() async {
print('In Microphone permission method');
//WidgetsFlutterBinding.ensureInitialized();
await Permission.microphone.request();
WebViewMethodForCamera();
}
Future WebViewMethodForCamera() async{
print('In Camera permission method');
//WidgetsFlutterBinding.ensureInitialized();
await Permission.camera.request();
}
@override
Widget build(BuildContext context) {
return Scaffold(
appBar: AppBar(
title: Text('Check this frame'),
),
body: Column(
children: <Widget>[
RaisedButton(
onPressed: webViewMethod,
child: Text('Join'),
textColor: Colors.black,
),
Expanded(
child: Container(
child: InAppWebView(
initialUrl: "https://appr.tc/r/158489234",
initialOptions: InAppWebViewGroupOptions(
crossPlatform: InAppWebViewOptions(
mediaPlaybackRequiresUserGesture: false,
debuggingEnabled: true,
),
),
onWebViewCreated: (InAppWebViewController controller) {
_webViewController = controller;
},
androidOnPermissionRequest: (
InAppWebViewController controller, String origin,
List<String> resources) async {
return PermissionRequestResponse(resources: resources,
action: PermissionRequestResponseAction.GRANT);
}
),
),
)
],
)
);
} }
void main() {
runApp(MyApp());
}
class MyApp extends StatelessWidget {
@override
Widget build(BuildContext context) {
return MaterialApp(
title: 'Flutter Demo',
theme: ThemeData(
primarySwatch: Colors.blue,
visualDensity: VisualDensity.adaptivePlatformDensity,
),
home: IframeScreen(),
);
}
}
class MyHomePage extends StatefulWidget {
MyHomePage({Key key, this.title}) : super(key: key);
final String title;
@override
_MyHomePageState createState() => _MyHomePageState();
}
class _MyHomePageState extends State<MyHomePage> {
int _counter = 0;
void _incrementCounter() {
setState(() {
_counter++;
});
}
@override
Widget build(BuildContext context) {
return Scaffold(
appBar: AppBar(
title: Text(widget.title),
),
body: Center(
child: Column(
mainAxisAlignment: MainAxisAlignment.center,
children: <Widget>[
Text(
'You have pushed the button this many times:',
),
Text(
'$_counter',
style: Theme.of(context).textTheme.headline4,
),
],
),
),
floatingActionButton: FloatingActionButton(
onPressed: _incrementCounter,
tooltip: 'Increment',
child: Icon(Icons.add),
),
);
}
}