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CssImport when using Component Exporter by Mikhail Shabarov, 1 month ago
Recent Posts
Vaadin Forum3. Vaadin 6, 7, 8Framework UI

How to set the Width for Mobile Browser

Liang ZHANG
7 years ago May 31, 2015 7:19am

This is a simple test case:

class MyUI extends UI {

    @Override
    protected void init(VaadinRequest vaadinRequest) {
        VerticalLayout layout = new VerticalLayout()
        layout.setMargin(true)
        setWidth("640px")
       
        layout.setWidth("640px")
        layout.addComponent(new Button("Test"))
......

In Chrome with F12 and choose the iphone, the width will always be 980 and make the button very small.

How can I set the width to 640 or 320 to make the UI fills iphone better?

Liang ZHANG
7 years ago Jun 02, 2015 2:55am

I found to add

<meta name="viewport" content="width=device-width, initial-scale=1.0, minimum-scale=1.0, maximum-scale=1.0, user-scalable=no">

into <head></head>

will make the page fits my need. But I still can not find the way to add the <meta...> with Vaadin code.

Maybe someone can help me to do this.

Waitting...

Liang ZHANG
7 years ago Jun 02, 2015 3:18am

DONE

https://dev.vaadin.com/ticket/13710

use the code:

        getPage().getJavaScript().execute("document.head.innerHTML += '<meta name=\"viewport\" content=\"initial-scale = 1.0,maximum-scale = 1.0\">'")

Marius Reinwald
7 years ago Jun 02, 2015 6:18am

Not sure if it does everything you want but there is a ViewPort annotation (Javadoc: https://vaadin.com/api/com/vaadin/annotations/Viewport.html)
which can be added to the UI class. It is also used in the new Maven Crud Example Application Archetype like this:

@Viewport("user-scalable=no,initial-scale=1.0"

Not quite sure when it was added though but it definitely can be found in the latest version.