Testing Flutter on larger aspect ratios for new Android flagship devices

[sethladd]

Tracking issue.

From https://android-developers.googleblog.com/2017/03/update-your-app-to-take-advantage-of.html

"To deliver more engaging viewing experiences to their users, many Android OEMs are experimenting with new, super widescreen smartphones. Samsung has just announced a new flagship device, the Samsung Galaxy S8, featuring a new display format with an aspect ratio of 18.5:9. At the Mobile World Congress earlier this year, LG also launched their new flagship device, the LG G6, with an expanded screen aspect ratio of 18:9."

and

"We recommend that you design your app to support aspect ratios of 2.1 or higher. "

Should we test Flutter's default layout systems and Material Scaffold and widgets performs as expected for aspect rations of 2.1 or higher?

[eseidelGoogle]

I'm not sure there is a ton to do here. @jason-simmons planned to test our O compatibility, so this could fall under that if there is an option to get this resolution from an Android Emulator today, or an existing device we could test on.

Otherwise @Hixie would know if we expect problems here from the framework side.

[eseidelGoogle]

From the linked announcement looks like yes, there are two devices shipping with a 2:1 screen ratio. So it should be possible to pull them up in an Android Emulator. I don't anticipate any problems for Flutter with either.

[eseidelGoogle]

I don't think there is anything really for us to do here. Unless someone is aware of Android-specific affordances which we consider implementing in our Framework for these devices? (i.e. how drawers are always open on tablets in landscape, etc.)

[sethladd]

If there's no built-in assumptions in our framework that would prohibit Flutter's default assumptions re: material and layouts from "just working" in a 2:1 screen, then we can close this.

I remember we had some assumptions/defaults that don't work great on a tablet, so I wanted to see how we're doing with 2:1.

I think the minimum is to open an emulator, set to 2:1, and load up the gallery and click around (and set to landscape :)

[txthinking]

I use Material Scaffold in my Android app, it works well on many devices. But on Samsung Galaxy S8 and Samsung Galaxy S8+, it shows only a blank page.

[aletorrado]

I don't know if its related to Material Scaffold or something about the Flutter engine, but in my Galaxy S8 it's showing only a 9:16 viewport, centered in the device 9:18.5 screen. This is obviously a deal breaker right now with almost every android phone being shipped with ultrawide displays.

Is this fixable at the moment in any way?

[eseidelGoogle]

Perhaps there are specific AndroidManifest.xml settings to make to tell the app to use the full screen? @jason-simmons might know.

[cbracken]

We've had several issues on the S8, in particular Chinese market versions of the S8, but it's unclear to me that there's anything actionable from a framework or device support point of view that we're specifically missing for widescreen devices.

I encourage anyone experiencing device-specific bugs with the S8 (or any other phone) to file a new bug though. Closing this in the absence of specific action items.

[github-actions]

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