Permission

Requirements

To follow this course, it is required to know following …

•

Flutter Permissions [ios]

•

Flutter Permissions [Android] 

import 'package:flutter/material.dart';
import 'package:permission_handler/permission_handler.dart';

class CamScreen extends StatelessWidget {
  const CamScreen({Key? key}) : super(key: key);

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(
        title: Text("LIVE"),
      ),
      body: FutureBuilder<bool>(
        future: init(),
        builder: (context, snapshot) {
          // when error
          if (snapshot.hasError) {
            return Center(
              child: Text(
                snapshot.error.toString(),
              ),
            );
          }
          // when waiting for the response
          if (!snapshot.hasData){
            return Center(
              child: CircularProgressIndicator(),
            )
          }

          return Container();
        },
			),
    );
  }

  Future<bool> init() async {
    final resp = await [Permission.camera, Permission.microphone].request();

    final cameraPermission = resp[Permission.camera];
    final microphonePermission = resp[Permission.microphone];

    if (cameraPermission != PermissionStatus.granted ||
        microphonePermission != PermissionStatus.granted) {
      throw "The Camera Permission is not granted";
    }

    return true;
  }
}
Dart
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Requesting Permissions

Future<bool> RequestPermission() async{  // Need function to request camera & microphone connection
	final resp = await[Permission.camera, Permission.microphone].request();  // request both camera and microphone

	// specify and define the permission
	final cameraPermission = resp[Permission.camera];
	final microphonePermission = resp[Permission.microphone];

	if(cameraPermission != PermissionStatus.granted ||
	microphonePermission != PermissionStatus.granted) {
		throw "Permission not granted";
	}

	return true;  // return true if everything worked fine
}
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FutureBuilder<bool>(
  future: RequestPermission(),  // Requesting Permission Function
  builder: (context, snapshot) {

	// When RequestPermission() has an error
	if (snapshot.hasError){
		return Center(
			child: Text(snapshot.error.toString())  // show Error message directly
		);
	}

	// When RequestPermission() is in progress
	if (!snapshot.hasData) {
		return Child(
			child: CircularProgressIndicator(),
		);
	}
}
Dart
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