[Bug] Resources.System.DisplayMetrics.HeightPixels return the false height when with the notch display [Xamarin.Forms.Android]]

[BalasubramaniSundaram]

Description

Hi Team,

We at Syncfusion develop data virtualization controls for Xamarin and we have more than 90 controls spread across all platforms of Xamarin. Please refer the below link for a description about us.
UserGuide: https://help.syncfusion.com/xamarin/sfdatagrid/overview
FeatureTour: https://www.syncfusion.com/products/xamarin
UserGuide:https://help.syncfusion.com/xamarin/sflistview/getting-started

Issue

We have recently encountered an issue in Xamarin.Forms.Android, when we are taking the "Resources.System.DisplayMetrics.HeightPixels" its difference in height pixel with the device of notch display and normal display. we are trying to displaying the popup for full screen in both the with and without notch display, we are doing calculated by minus the status bar height from the value of Resources.System.DisplayMetrics.HeightPixels its working fine for the Samsung S8 device and S7 etc, when we come to a device like One plus, One Plus 7 with notch display its return the value was didn't consider the status bar and return the height for the below notch display space.

Note :
Permanently hide the navigation bar in the device.

Steps to Reproduce

1. Run the attached sample.
2. In the appearing Method, we have printed the value for of display height from the " "Resources.System.DisplayMetrics.HeightPixels""
3. Check-in Samsung S8 device and One plus 6

Expected Behavior

Resources.System.DisplayMetrics.HeightPixels should return the whole height of the screen whether its notch display or normal display

Actual Behavior

Resources.System.DisplayMetrics.HeightPixels didn't consider the status bar height in notch display.

Basic Information

• Version with issue: No
• Last known good version: No
• IDE: Visual Studio 2019
• Platform Target Frameworks:
  • Android: API 9.0 Pie
• NuGet Packages: Xamarin.Forms 4.1
• Affected Devices: One plus 6, One plus 7, Hawaii P lite 10

Screenshots

Samsung device

One Plus 6

Reproduction Link

Sample Popup_Demo.zip

[jfversluis]

Hi @BalasubramaniSundaram !

Thanks for the issue. However, I don't think this is a Xamarin.Forms issue. Google has only provided notch (or display cutout as they call it) API's for Android 9 and above. On those devices you should be able to configure some layout settings and/or retrieve the notch height, etc. that you can use to determine the right height.

Some more information can be found here: https://developer.android.com/guide/topics/display-cutout

[BalasubramaniSundaram]

Hi @jfversluis,
Thanks, We have already done all the calculation for the notch as well the navigation bar bottom cases, this issue is peculiar in few devices only. Same as Hawaii P 9 with notch display is working fine from our side when coming to Oneplus, Hawaii P10 lite we get the null as well some time faulty value-form "Resources.System.DisplayMetrics" at initial appearing. However, the notch has introduced by android, but the from the API "Resources.System.DisplayMetrics" we are getting inconsistent value.

[KarthikRaja26]

any update on this ?

[KarthikRaja26]

Hi @samhouts,

Any update on this ?

[KarthikRaja26]

Hi @samhouts ,

Any update on this ?

[pradeepkumar417]

Hi @samhouts

Any update on this?

[KarthikRaja26]

Hi @samhouts

Any update on this ?

[SujaVenkatesan]

Hi @samhouts

Any update on this?