Expecting 'android:screenOrientation="unspecified"' or '"fullSensor"' for this activity

This is a kind of warning to inform developers that for big screen devices it is not good to restrict the orientation. However if your application only supports portrait mode then this warning can be disabled by doing the following.

Mac: Android Studio -> Preferences

Windows: File -> Settings

Then:

1. Search for "chrome"
2. Uncheck "Activity is locked to an orientation"
3. Apply and ok.

Unchecking step screen shot

This will only remove the warning for the current system. So this change will not affect the other users working on the same project. They will still see the same warning. In a way, it is good to make this change for the local system as everyone gets to know about this warning. However, if we want to remove this warning at the project level then the following can be used: Add tools:ignore="LockedOrientationActivity" in the manifest tag of your Android Manifest file. For e.g.

<manifest xmlns:android="http://schemas.android.com/apk/res/android"
tools:ignore="LockedOrientationActivity"

So this is your personal preference, whether you want every developer to be aware of this warning or you want to add the tools:ignore="LockedOrientationActivity in the manifest and mute this warning for everyone. I prefer to enlight everyone :)

Given your application only supports portrait mode, you can ignore these errors by adding tools:ignore="LockedOrientationActivity" to all of your activities or just to the top level <manifest> tag which will apply to all activities.

<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    tools:ignore="LockedOrientationActivity"
    ...
    ...

Add this to the manifest tag:

<manifest xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
tools:ignore="LockedOrientationActivity"
...