Webview: convert html data to local file and use url to load it

[richerfu]

getUrl will return html content or html base64 content when load html with loadData. That will cause crash when we try to init request with url.

Need by tauri-apps/wry#1607 (comment)

[richerfu]

Seems android will crash, we can try to get uri directly?

[lucasfernog]

@richerfu how do I get the error stacktrace like that? do I need to log something?

[lucasfernog]

ohh i see that one is from Android, I actually wanted to get the backtrace of a Rust crash on OHOS instead

[richerfu]

@lucasfernog Here is an example that can reproduction:

const INDEX_HTML: &str = include_str!("./index.html");

let webview = WebViewBuilder::new()
                    .with_html(INDEX_HTML)
                    .build(&window)
                    .unwrap();

Building webview with with_html instead of with_url.

For ohos, i notice Android use about:blank as default value. So i've already convert unwrap to default value with about:blank. See code https://github.com/tauri-apps/wry/pull/1607/files#diff-9fe33affedade1b7f64bcc5a1219b2b7580c9f4f971d702f6740638db298eaf4R104