I can't reproduce this on an emulator with a notch.

@yoavrofe which device are you seeing this on?
Can you post the output of flutter doctor.
Do you see the issue on latest master?

I can't reproduce this on a Pixel 3 XL, either --- I did a sync to head this morning and a flutter run of the webview example, and it worked. @amirh and I are wondering if it's a device-specific issue?

same problem #25152 .

View will have a padding on this Android screen.

code example is

https://github.com/CaiJingLong/androidview-notch-error

And touching events can also be offset.

Other androidview is also have the problem . I just extracted the smallest repository of code.

flutter doctor -v

flutter doctor -v
[✓] Flutter (Channel dev, v1.0.0, on Mac OS X 10.13.6 17G65, locale zh-Hans-CN)
    • Flutter version 1.0.0 at /Users/cai/fluttersdk/flutter
    • Framework revision 5391447fae (10 days ago), 2018-11-29 19:41:26 -0800
    • Engine revision 7375a0f414
    • Dart version 2.1.0 (build 2.1.0-dev.9.4 f9ebf21297)

[✓] Android toolchain - develop for Android devices (Android SDK 28.0.3)
    • Android SDK at /Users/cai/Library/Android/sdk
    • Android NDK at /Users/cai/Library/Android/sdk/ndk-bundle
    • Platform android-28, build-tools 28.0.3
    • Java binary at: /Volumes/Evo512/application/develop/Android Studio.app/Contents/jre/jdk/Contents/Home/bin/java
    • Java version OpenJDK Runtime Environment (build 1.8.0_152-release-1136-b06)
    • All Android licenses accepted.

[✓] iOS toolchain - develop for iOS devices (Xcode 9.2)
    • Xcode at /Applications/Xcode.app/Contents/Developer
    • Xcode 9.2, Build version 9C40b
    • ios-deploy 2.0.0
    • CocoaPods version 1.5.3

[✓] Android Studio (version 3.1)
    • Android Studio at /Applications/Android Studio.app/Contents
    • Flutter plugin version 29.0.1
    • Dart plugin version 173.4700
    • Java version OpenJDK Runtime Environment (build 1.8.0_152-release-1024-b01)

[✓] Android Studio (version 3.2)
    • Android Studio at /Volumes/Evo512/application/develop/Android Studio.app/Contents
    • Flutter plugin version 30.0.1
    • Dart plugin version 181.5656
    • Java version OpenJDK Runtime Environment (build 1.8.0_152-release-1136-b06)

[✓] IntelliJ IDEA Ultimate Edition (version 2018.2.5)
    • IntelliJ at /Users/cai/Applications/JetBrains Toolbox/IntelliJ IDEA Ultimate.app
    • Flutter plugin version 31.1.3
    • Dart plugin version 182.5124

[✓] VS Code (version 1.29.1)
    • VS Code at /Applications/Visual Studio Code.app/Contents
    • Flutter extension version 2.21.1

[✓] Connected device (1 available)
    • MI 8 • b6ec3684 • android-arm64 • Android 8.1.0 (API 27)

my device photo

I will test the master channel.

My device is a Pocophone F1.
The problem exists when using the master channel, but does not exist when not using the AppBar.

flutter doctor:

Doctor summary (to see all details, run flutter doctor -v):
[✓] Flutter (Channel master, v1.0.1-pre.15, on Mac OS X 10.14.1 18B75, locale en-IL)
[✓] Android toolchain - develop for Android devices (Android SDK 27.0.3)
[✓] iOS toolchain - develop for iOS devices (Xcode 10.1)
[✓] Android Studio (version 3.2)
[✓] VS Code (version 1.29.1)
[✓] Connected device (2 available)
• No issues found!

I upgraded to Android 9.0, and could not reproduce the problem. It seams like a problem related to the app bar before 9.0.

@yoavrofe
My device is Android 8.1.0 (API 27), The developer of my mobile phone system hasn't released an Android 9.0 version yet. So my problem still exists.

It looks like prior to API 28 (where Android introduced support for DisplayCutouts) Xiaomi had some custom Android changes to support display cutouts.

What I'm observing on a Xiaomi Pocophone F1 running API 27 is that windows attached to virtual displays are offsetted by the height of the notch.

I'm not sure how does the display cutout support works on these Xiaomi devices, I tried setting full screen window flags, and setting setFitSystemWindows to false (thinking that full screen windows will not be offsetted, as the main display's window is not offsetted when it's full screen) but the virtual display's window is still being offset.

It does look like we can detect the offset at runtime (calling getOnScreenLocation on the VD's root view shows the offset), so one workaround could be to allocate a bigger VD than needed and have Flutter clip the texture. I'm not a big fan of this workaround as it is tailored for a very specific fork of Android, and as we workaround without fully understanding the issue.

I'm open for cleaner fix/workaround suggestions if anyone has such.

The Pocophone F1 I got yesterday to investigate the issue auto-upgraded to Android 9 over night (without asking for my confirmation), and with Android 9 the issue is indeed fixed.

I'm trying to reach out to relevant folks to see if there's a better workaround than allocating a bigger virtual display and clipping it.

As we learned that this is a vendor specific bug, and as it seems to have been already fixed by the vendor I'm de-prioritizing this issue and moving out of the January 2019 milestone.

We should still look for a reasonable workaround for the affected Xiaomi devices that are still running older Android versions.

If you can, try to contact Xiaomi Development Engineer?

older Android versions have any solution to avoid it? @amirh

In addition to upgrading android9, is there any other way to solve it temporarily? Simple, quick way?

See the proposed workaround at #24657 (comment) if you're willing to fork the engine you can probably give it a shot.

Is there a solution?

I have update Android version to 9，and this problem has solved

Is there a solution?

Current solution is

Modify SingleViewPresentation which is create PlatformView

code:

int flag = 0x00000100 | 0x00000200 | 0x00000400;
try {
    Method method = Window.class.getMethod("addExtraFlags",
            int.class);
    method.invoke(getWindow(), flag);
} catch (Exception e) {
    Log.i(TAG, "addExtraFlags not found.");
}

document: https://dev.mi.com/console/doc/detail?pId=1293#_3_3

Current solution is

Modify SingleViewPresentation which is create PlatformView

code:

int flag = 0x00000100 | 0x00000200 | 0x00000400;
try {
    Method method = Window.class.getMethod("addExtraFlags",
            int.class);
    method.invoke(getWindow(), flag);
} catch (Exception e) {
    Log.i(TAG, "addExtraFlags not found.");
}

document: https://dev.mi.com/console/doc/detail?pId=1293#_3_3

android:screenOrientation="landscape" ,This problem has not been solved

AndroidManifest.xml

<meta-data android:name="notch.config" android:value="portrait"/>
document: https://dev.mi.com/console/doc/detail?pId=1293#_3_3

Bumping this issue down to a P3 since it is fixed with a later version of Android and has a posted workaround. If this issue gains additional thumbs up we may reconsider the priority.