[Bug]: Method "setIsMobile" not working in Java

[pawel747]

Version

1.44.0

Steps to reproduce

I have the code:
try (Playwright playwright = Playwright.create()) { Browser.NewContextOptions contextOptions = new Browser.NewContextOptions() .setIsMobile(true) .setHasTouch(true);

Based on the documentation, I understand that this code should start emulating and a window should open for the mobile version.

Expected behavior

I see a "small window" for the mobile version.

Actual behavior

I see the standard window for the desktop version.

Additional context

No response

Environment

System:
MacOS Sonoma 14.3.1 (23D60)

[mxschmitt]

As per the documentation what isMobile is doing:

Whether the meta viewport tag is taken into account and touch events are enabled.

So this does not affect the viewport/screen size. If you want to change the viewport, you can follow this: https://playwright.dev/java/docs/emulation#devices

[pawel747]

Thanks for the answer. However, I don't understand whether anything other than resolution needs to be set. I entered the values ​​corresponding to desktop. To change the appearance to the mobile version, do I have to substitute values ​​in the viewport in some way or is it enough to set a flag?

My current code:
Browser.NewContextOptions contextOptions = new Browser.NewContextOptions() .setViewportSize(1280, 1024) .setHasTouch(true) .setIsMobile(true);

[mxschmitt]

Looks good, in a nutshell its e.g. for an iPhone 15 Pro max the following:

playwright/packages/playwright-core/src/server/deviceDescriptorsSource.json

Lines 928 to 942 in 1c69d3e

	"iPhone 14 Pro Max": {
	"userAgent": "Mozilla/5.0 (iPhone; CPU iPhone OS 16_0 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/17.4 Mobile/15E148 Safari/604.1",
	"screen": {
	"width": 430,
	"height": 932
	},
	"viewport": {
	"width": 430,
	"height": 740
	},
	"deviceScaleFactor": 3,
	"isMobile": true,
	"hasTouch": true,
	"defaultBrowserType": "webkit"
	},

So you could emulate screen, userAgent, deviceScaleRatio as well.

Probably related to microsoft/playwright-java#939 - maybe its available in junit already with the bindings.