Open Browser Fires Error

Nii Darko Darkoh

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Apr 26, 2021, 9:25:43 AM4/26/21

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Hello Droidscript,

I need help to solve the following issue:

whenever i use the ff JavaScript commands to open an url, I get the error "_Run is not defined" error.

The commands are as follows:

1.

window.open("https://www.w3schools.com");

var params = `scrollbars=no,resizable=no,status=no,location=no,toolbar=no,menubar=no, width=0,height=0,left=-1000,top=-1000`;

open('https://www.w3schools.com', 'test', params);

2.

document.open("https://www.w3schools.com");

3.

location.href = "https://www.w3schools.com";

How do I solve this please?

Alan Hendry

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Apr 26, 2021, 10:32:24 AM4/26/21

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Hi,

Not sure if you mean in a native DS app, or an HTML app.

Could you post an SPK?

When you say " ff" do you mean FireFox?

I would normally assign the new window to a variable

window1 = window.open("https://www.w3schools.com");

AFAIK negative left and top are not allowed, and minimum width and height are 100.

Not sure that open (sans window.) is valid

As far as I know document.open is to open a file to write to it (section 2)

There's also

window.location.assign ("https://www.w3schools.com"); // replaces current page

location.replace("https://www.w3schools.com"); // replaces current page,can't go back

Regards, ah

Nii Darko Darkoh

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Apr 26, 2021, 11:59:39 AM4/26/21

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Forgive me for not providing enough details.

1. I am developing an HTML app

2. The methods I posted open the pages alright..but when I close

The browser and return to my DS app, I get the script error.

3. I am using raw javascript codes not native DS code

I don't know if I can catch the error in onResume()

Thanks Alan.

Alan Hendry

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Apr 28, 2021, 7:13:13 AM4/28/21

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Hi,

Sorry, still not understanding.

When I say "HTML app", I mean that when you first create your app, you choose HTML from the drop-down

(code probably starts with <html>).

And I say "DS app", I mean that you choose Native

(code will usually include function OnStart() ).

Can you post the significant steps in the code, and the actions the user performs?

Or it may be worth "stepping back" from the code and look at what you are trying to achieve (and figure out how to code it).

Regards, ah

Nii Darko Darkoh

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Apr 28, 2021, 7:38:25 AM4/28/21

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Hi Alan, thank you for your patience.

Yes, I chose HTML when creating the project.

Please see my full code below:

<html>

<head>

</head>

//Called after application is started.

function OnStart(){

app.ShowPopup( "HTML Rocks!" );

}

function openbrowser(){

window.open("https://www.w3schools.com");

//return;

}

</script>

<style>

body { background-color: #ffffff; }

.hello

{

font-size: 42;

width: 100%;

margin-top: 2em;

text-align: center;

color: blue;

}

</style>

<button onclick="return openbrowser(); " ) > OPEN BROWSER </button>

</div>

</body>

</html>

Nii Darko Darkoh

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Apr 28, 2021, 7:40:59 AM4/28/21

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So to test, run the app and hit the OPEN BROWSER button.

After the browser opens (chrome for me), tap the BACK key ..and the app crashes.

Thank you.

Alan Hendry

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Apr 28, 2021, 9:32:59 AM4/28/21

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Hi,

I think the error occurs when you switch apps (close browser or switch back to DS).

AFAIK a button click doesn't need a value returned, but this doesn't fix it either

Removing <script src='file:///android_asset/app.js'></script> and changing to <body>

seems to fix it, so I presume something in :///android_asset/app.js is responsible

Needs some-one technical to look at that (I'm not very au fait with html apps and app.js).

If you create a Native app, put your html in a file, then read it and open a webview with option IgnoreErrors

then when you click the button it goes to w3schools, and when you go back it goes back to your page.

Typing this in here, so there may be typos.

wv = app.AddWebView(lay,1,1,"IgnoreErrors") ;

html = app.ReadFile("html.html") ;

wv.LoadHtml(html) ;

Regards, ah

Nii Darko Darkoh

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Apr 28, 2021, 12:43:10 PM4/28/21

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Hi Alan, you wrote as FF

"If you create a Native app, put your html in a file, then

read it and open a webview with option IgnoreErrors

then when you click the button it goes to w3schools, and

when you go back it goes back to your page."

Does it mean ...

1. if I create a native app I can add an HTML file?

2. I can use the webview to open a local/project file

to view it's content?

Droidscript team Kindly look into this for us.

Thank you Alan.

Alan Hendry

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Apr 28, 2021, 4:16:02 PM4/28/21

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Hi,

I created a new Native app, added your html etc in a new file

See SPK

Regards, ah

wv.spk

Nii Darko Darkoh

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Apr 28, 2021, 5:08:39 PM4/28/21

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Thanks Alan. I will try it out and revert.

Nii Darko Darkoh

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Apr 28, 2021, 5:40:50 PM4/28/21

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Hi Alan, I tried the project. It's okk except for one problem.

When the browser opens and the back key is tapped, it closes the app all together.

This time no error shows though.

How do we return to the layout interface?

Thanks.

Alan Hendry

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Apr 29, 2021, 5:40:13 AM4/29/21

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Hi,

Because you are opening a new window, it is opening the browser for w3schools.

Back exits the browser, and returns to Android Home; you can go back to your app by choosing Recent Apps (bottom right icon).

Pretty sure we need to look at what you are trying to achieve.

You could have a native button "OpenBrowser", and a webview, when the button is clicked then wv.LoadUrl("https://w3schools.com")
If you want a whole bunch of buttons with a bunch of sites you may need to show the buttons only,

and when clicked switch to a layout with a close button and a webview

the close button would show the original layout with the bunch of buttons.

You can switch layouts using Layout Hide/Gone/Show, or Drawers or Dialogs, Tabs, etc.

Regards, ah

Nii Darko Darkoh

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Apr 29, 2021, 6:43:55 AM4/29/21

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Thank you Alan,

I am trying to create an html app that will use a webview to open a payment page.

the paymentt page(mastercard) disallows me because i am using iframe.

So i decoded to trick DS to enable me leverage the native js to use the webview to display the page.

Frankly I have finished creating it. VISA works with my iframe but mastercard disallows iframe, so I am exploring

options with the webview. To rewrite the pp in native will be difficult because its taken 6 montghs to do this in html.

But then a little expirement revealed that even webview display of a browser posses some complications with regard to returning to

the app from the browser. It takes you to the android desktop.

How can I get a solution to this problem of mine??

Thank you Alan.

Alan Hendry

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Apr 29, 2021, 9:21:59 AM4/29/21

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Hi,

Continuing with the Native app ...

You could make your function openbrowser run some DS app code

I tested a simple function openbrowser(){app.ShowPopup("hi")}

I don't know if you need the HTML to construct the MasterCard URL and pass it from the onclick in the HTML to openbrowser,

then openbrowser would receive the URL, switch to a 2nd layout with another webview with LoadUrl for the MasterCard URL

Probably simplest would be a close button in the 2nd layout and ontouch to switch back to the 1st layout.

(or use SetOnUrl to detect that the user has got to a "payment completed" screen - see other posts about SetOnUrl).

Regards, ah

Nii Darko Darkoh

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Apr 30, 2021, 5:56:01 PM4/30/21

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Alan, I think I finally got the solution I was looking for..

It's app.OpenURL. I found it in one of my old apps..as follows

<a onclick=app.OpenUrl("https://chat.whatsapp.com/Hf91MwUOyBkKFI51KlDhc") style="text-align: left;font-size:13px;color:blue;">Join our WhatsApp Family</a>

Thank you for all your time and effort.

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