Use await in App()

Question

Hi,

How can I use the await inside the App() in MAUI like this:

public App()  
{  
	InitializeComponent();  
  
    PermissionStatus status = await Permissions.RequestAsync<Permissions.ContactsRead>();  
  
    if (status == PermissionStatus.Granted)  
    {  
        // do something  
    }  
    else  
    {  
        // do something else  
    }  
}  

Thanks,
Jassim

Answer 1

Hello @Jassim Al Rahma ,

You cannot use await in App(), because the await operator can only be used within an async method, App() is a constructor, async constructors are not allowed. There is a similar question - Run await inside constructor - Microsoft Q&A, you could check it.

For more details, you can refer to Compiler Error CS4033 | Microsoft Learn
and Asynchronous programming in C# | Microsoft Learn.

In addition, you are requesting the Android permissions, you can call it in the OnAppearing method of AppShell or other Pages.

protected override async void OnAppearing()  
    {  
        base.OnAppearing();  
        PermissionStatus status = await Permissions.RequestAsync<Permissions.ContactsRead>();  
  
        if (status == PermissionStatus.Granted){  
            // do something  
        }else{  
            // do something else  
        }  
    }  

Best Regards,
Wenyan Zhang

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