Android 11.0 修复Settings→添加访客时界面卡住

packages/apps/Settings/src/com/android/settings/users/UserSettings.java

private void updateAddGuest(Context context, boolean isGuestAlreadyCreated) {
    
    
        if (!isGuestAlreadyCreated && mUserCaps.mCanAddGuest
                && WizardManagerHelper.isDeviceProvisioned(context)
                && mUserCaps.mUserSwitcherEnabled) {
    
    
            // wangrui remove guest, keep adding user
++            mAddGuest.setVisible(false);
            mAddGuest.setIcon(getEncircledDefaultIcon());
            mAddGuest.setEnabled(canSwitchUserNow());
            mAddGuest.setSelectable(true);
        } else {
    
    
            mAddGuest.setVisible(false);
        }
    }

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