refuse to connect in the example code for preview_mobile

[zhiiiyang]

Hi, I am trying to reproduce the example as follow

preview_mobile(appPath = system.file("examples/gallery/app.R", package = "shinyMobile"), 
device = "iphoneX")

However, the phone screen does pop up in the browser but it said that "127.0.0.1 refused to connect.". Not sure if I set up things correctly. Thank you!

FYI, the url in the web browser is http://127.0.0.1:1919/

[DivadNojnarg]

are you behind a proxy?

[zhiiiyang]

Not really.

[DivadNojnarg]

What OS are you using? Alternatively, you could try to run the app in a new process:

p <- processx::process$new(
    "Rscript", 
    c(
        "-e", 
        "options('shiny.port'= 2811); shinyMobile::f7Gallery()"
    )
)
# TRUE if the app is running
p$is_alive()

and then call preview_mobile pointing to the port previously fixed (2811):

shinyMobile::preview_mobile(url = "http://127.0.0.1:2811", device = "iphoneX")

The url could also be http://localhost:2811

[zhiiiyang]

Thanks. I am using the macOS 10.15.5. I tried the command which still doesn't show any preview.

[ivanalaman]

I'm having the same problem! I don't understand how the package documentation doesn't contain instructions on how to run the application as if you were using a mobile phone. Obviously I'm not interested in seeing the app as if it were on a desktop. When I run the command

preview_mobile(appPath = system.file("app.R", package = "shinyMobile"), device = "iphoneX")

the message appears in the console:

Copy in your terminal (not the R console):R -e "shiny::runApp('',port=3838)"

This is wrong!!!!! At the very least, the current directory of the "app.R" file should appear.