How to give permissions to xamarin camera

Question

I wanted to add camera to my xamarin form app. I watched this video. https://www.youtube.com/watch?v=DJYLrVNY2ak&t=645s

After all the work, I get permission errors.

Error says:

Unhandled Exception: Plugin.Media.Abstractions.MediaPermissionException: Camera permission(s) are required

This code is on MainPage.xaml.cs

    using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using Xamarin.Forms;
using Plugin.Media.Abstractions;
using Plugin.Media;
using Plugin.Permissions;
using Plugin.Permissions.Abstractions;

namespace camera
{
    public partial class MainPage : ContentPage
    {
        public MainPage()
        {
            InitializeComponent();
        }

        private async void Button_Clicked(object sender, EventArgs e)
        {


            await CrossMedia.Current.Initialize();

            if (!CrossMedia.Current.IsCameraAvailable
                || !CrossMedia.Current.IsTakePhotoSupported)
            {
                await DisplayAlert("No Camera", "No Camera available", "Ok");
                return;
            }

            var file = await CrossMedia.Current.TakePhotoAsync(

                new StoreCameraMediaOptions
                {

                    SaveToAlbum = true,

                });

            if (file == null)
                return;

            PathLabel.Text = file.AlbumPath;

            MainImage.Source = ImageSource.FromStream(() =>
            {
                var stream = file.GetStream();
                file.Dispose();
                return stream;


            });




        }
    }
}

And this code is on MainPage.xaml

<?xml version="1.0" encoding="utf-8" ?>
<ContentPage xmlns="http://xamarin.com/schemas/2014/forms"
             xmlns:x="http://schemas.microsoft.com/winfx/2009/xaml"
             xmlns:local="clr-namespace:camera"
             x:Class="camera.MainPage">

    <StackLayout>
        <!-- Place new controls here -->
        <Label Text="Welcome to Xamarin.Forms!" 
           HorizontalOptions="Center"
           VerticalOptions="CenterAndExpand" />

        <Button Text="Take a Photo"
                Clicked="Button_Clicked">

        </Button>

        <Image x:Name="MainImage"></Image>
        <Label x:Name="PathLabel"></Label>


    </StackLayout>

</ContentPage>

The emulator open up fine. When I click "Take a Photo" button. I get permission error.

This is error image. Error image

Here is link to file. You can download the file and have a look at the error. All I want this app to do is take some details, take picture and save picture. LINK TO FILE https://contedia-my.sharepoint.com/personal/muhammad_ikram_contedia_com/_layouts/15/onedrive.aspx?id=%2Fpersonal%2Fmuhammad%5Fikram%5Fcontedia%5Fcom%2FDocuments%2FPhotos%20%282%29%2Ezip&parent=%2Fpersonal%2Fmuhammad%5Fikram%5Fcontedia%5Fcom%2FDocuments&slrid=6f5b859e-50d6-0000-25d8-0fa7f8d3f9ce

Solution

Add this line to your MainActivity in Android

CrossCurrentActivity.Current.Init(this, savedInstanceState);

Add these lines to your code AsseblyInfo

[assembly: UsesFeature("android.hardware.camera", Required = false)] [assembly: UsesFeature("android.hardware.camera.autofocus", Required = false)]

Comments

[Jason]

github.com/jamesmontemagno/…

[Tom Wilson]

I added this code on the MainActivity.cs. But I still get same permission error.

[Jason]

do you have Camera enabled in the Android Manifest?

[Tom Wilson]

Yes camera checkbox is ticked as well.

[Tom Wilson]

I have placed the above code. I get error "Use of unassigned local variable 'requestPermissions'". Does this variable needs to be declared with any value first.

[Tom Wilson]

I added the above code. I saw the alert message first time, I clicked yes but still it threw same permission error

[Tom Wilson]

I have added link where you can download the file look at error.

[user8013875]

You saw it only once because now it is enabled (you can see it in your device in details about your app). Not sure but try to add - <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />

[Tom Wilson]

Still showing same error. It is only a demo file. If I can share with you; will you have a chance to look at with your eye.

[Tom Wilson]

Here is download link to file. dropbox.com/s/lyv6pz7s0t7be74/camera.sln?dl=0

[user8013875]

I am not able to access the link, could you post on github?

[Tom Wilson]

Have you tried this link dropbox.com/s/lyv6pz7s0t7be74/camera.sln?dl=0

[user8013875]

I downloaded solution but i can see no code, it says - unavailable, the project file or web cannot be found

[Tom Wilson]

Would it be possible if I give you old email address than you can email me your email address. Than I can send the zip folder to to your email. Would be really helpful. My email is [email protected]