Change URL on startup

[dev-mash]

I try to change the URL during app startup. I used to use window.eval but I found that sometimes this is causing a error. So I try to move from window.eval() to WebviewWindow.navigate()

Now I need to get the URL on server side. Is there a way to get the proper URL? I tried the following code which works on linux but not on windows. On windows, the URL is about:blank.

// pseudo code
let app = tauri::Builder::default()
.setup(|app| {
let mut main_window = app.get_webview_window("main").unwrap();
match main_window.url() {
Ok(url) => {
println!("The URL is: {}", url); // on linux the proper URL is returned on windows its "about:blank"

[FabianLars]

maybe try the on_navigation hook? The Windows webview starts on about:blank for a split second which is iirc outside of our control (we tell it about the correct url before/on creation).

Why do you even need the url when you set it yourself?

[dev-mash]

Thanks for the suggestion @FabianLars. I currently store just the path when navigating in the app (i.e. /tasks). Reopening the app should open the page where I closed the app.

I wanted to get the base-url from the window (because I dont know how I could construct it on my own). But I could also store the complete URL instead of just the path. This way I would avoid the problem.

But just for my education, is there some utility that would allow me to get the base url (i.e. http://localhost or tauri:// or whatever it is in the current context)?

Best regards,
Manuel

[FabianLars]

But just for my education, is there some utility that would allow me to get the base url (i.e. http://localhost/ or tauri:// or whatever it is in the current context)?

Not directly i think (on the rust side). It's fairly easy though, in development it's your devUrl (cfg!(dev) or #[cfg(dev)] may help you here). In prod it's http://tauri.localhost on windows and android and tauri://localhost on linux,macos,ios

[dev-mash]

Thanks @FabianLars. I try to avoid to build my own URLs. For now I will just save the last URL. Thanks for the support!

[dev-mash]

@FabianLars thanks for your suggestions. I have now implemented this via navigate() and by using the preivously saved URL.

Now on android, I found that the navigation is not working:
https://docs.rs/tauri/latest/tauri/webview/struct.WebviewWindow.html#method.navigate

I will further look into this and try to provide more details.