hasSoftKeys always returns true even when soft keys are hidden

[t-tornado]

The method hasSoftKeys on DetectNavbar always returns true even when the soft navbar keys are hidden.

`
import DetectNavbar from 'react-native-detect-navbar-android'

DetectNavbar.hasSoftKeys().then(D => {
console.log(D)
})
`

[lequanghuylc]

Hi @t-tornado back in the day there were many android with hard physical keys (Home, Back & Menu). This library only separates those with hard keys and those without. I guess the method name hasSoftKeys is not accurate nowaday.
If you're able to create a Pull Request it would be awesome :D

[caijiami]

@lequanghuylc @MrLoh @t-tornado @keeleycarrigan。 There is no way to tell whether a virtual navigation bar is displayed

[MrLoh]

I have been using the following code about a year ago to determine proper safe area insets for the app. Haven't tested this in about a year though, since I have a new job.

    @ReactMethod
    public void getSafeAreaInsets(final Promise promise) {
        WritableMap response = Arguments.createMap();
        float density = getReactApplicationContext().getResources().getDisplayMetrics().density;

        if (getReactApplicationContext().getCurrentActivity() == null) {
            response.putDouble("top", 0);
            response.putDouble("bottom", 0);
            response.putDouble("right", 0);
            response.putDouble("left", 0);
        } else {
            if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) {
                WindowInsets insets = getReactApplicationContext().getCurrentActivity().getWindow().getDecorView().getRootWindowInsets();
                response.putDouble("top", insets.getStableInsetTop() / density);
                response.putDouble("bottom", samsungHiddenNavigationbar() ? 0 : insets.getStableInsetBottom() / density);
                response.putDouble("right", insets.getStableInsetRight() / density);
                response.putDouble("left", insets.getStableInsetLeft() / density);
            } else {
                final Context context = getReactApplicationContext();
                int statusBarResourceId = context.getResources().getIdentifier("status_bar_height", "dimen", "android");
                final float statusBarHeight = statusBarResourceId > 0 ? context.getResources().getDimensionPixelSize(statusBarResourceId) : 0;

                int navBarResourceId = context.getResources().getIdentifier("navigation_bar_height", "dimen", "android");
                final float navBarHeight = !immersiveModeEnabled() || samsungHiddenNavigationbar() ? 0 : context.getResources().getDimensionPixelSize(navBarResourceId);

                response.putDouble("top", statusBarHeight / density);
                response.putDouble("bottom", navBarHeight / density);
                response.putDouble("right", 0);
                response.putDouble("left", 0);
            }
        }

        promise.resolve(response);
    }

    private boolean samsungHiddenNavigationbar() {
        if (Build.VERSION.SDK_INT < Build.VERSION_CODES.N) {
            return false;
        }
        try {
            return Settings.Global.getInt(getCurrentActivity().getContentResolver(), "navigationbar_hide_bar_enabled") != 0;
        } catch (Exception ignored) {
            return false;
        }
    }

    private boolean immersiveModeEnabled() {
        if (Build.VERSION.SDK_INT < Build.VERSION_CODES.KITKAT) {
            return false;
        }
        Display display = ((WindowManager) reactContext.getSystemService(Context.WINDOW_SERVICE)).getDefaultDisplay();

        DisplayMetrics realDisplayMetrics = new DisplayMetrics();
        display.getRealMetrics(realDisplayMetrics);

        DisplayMetrics displayMetrics = new DisplayMetrics();
        display.getMetrics(displayMetrics);

        return (realDisplayMetrics.widthPixels > displayMetrics.widthPixels) ||
                (realDisplayMetrics.heightPixels > displayMetrics.heightPixels);
    }