Detect soft navigation bar availability in onePlusOne device progmatically?

Question

I need to check if a device has the soft navigation bar, and I followed the suggestions here.

It works great, except on onePlus devices, for some reason, this code:

int id = resources.getIdentifier("config_showNavigationBar", "bool", android");
    return id > 0 && resources.getBoolean(id);

returns false, although the soft navigation bar is displayed.

Any idea how can I get the correct result?

I prefer not to calculate the real width and available width, it seems like expensive operation.

Thanks.

Yes. Eventually, I used this code: public boolean hasNavBar() { Display d = getWindowManager().getDefaultDisplay(); DisplayMetrics dm = new DisplayMetrics(); d.getRealMetrics(dm); int realHeight = dm.heightPixels; int realWidth = dm.widthPixels; d.getMetrics(dm); int displayHeight = dm.heightPixels; int displayWidth = dm.widthPixels; return (realWidth - displayWidth) > 0 || (realHeight - displayHeight) > 0; } This gave the best result on all devices. — Sharas, Dec 13 '16 at 09:58

score 2 · Answer 1 · edited May 23 '17 at 12:10

2

See this answer. There is no way be 100% sure, though.

boolean hasBackKey = KeyCharacterMap.deviceHasKey(KeyEvent.KEYCODE_BACK);
boolean hasHomeKey = KeyCharacterMap.deviceHasKey(KeyEvent.KEYCODE_HOME);

if (hasBackKey && hasHomeKey) {
    // no navigation bar, unless it is enabled in the settings
} else {
    // 99% sure there's a navigation bar
}

Edit

Another approach

public boolean hasNavBar (Resources resources) {
    int id = resources.getIdentifier("config_showNavigationBar", "bool", "android");
    return id > 0 && resources.getBoolean(id);
}

edited May 23 '17 at 12:10

Community

1
1

answered Oct 19 '16 at 09:50

Amit Tiwari

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This doesnt work on devices like HTC one which has custom ROM – Suresh Kumar Oct 19 '16 at 10:56
@SureshKumar See the edit. It's an alternate solution. – Amit Tiwari Oct 19 '16 at 11:10
It always returns true on SamSung A70 – Anh Duy Dec 11 '19 at 07:17

score 1 · Answer 2 · answered Oct 19 '16 at 11:31

Yes you can try this:

    WindowManager mgr = (WindowManager) getSystemService(WINDOW_SERVICE);
            boolean hasSoftKey = Utils.hasSoftKeys(mgr, NPTApplication.this);

public static boolean hasSoftKeys(WindowManager windowManager, Context c) {
        boolean hasSoftwareKeys = true;

        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.JELLY_BEAN_MR1) {
            Display d = windowManager.getDefaultDisplay();

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

            int realHeight = realDisplayMetrics.heightPixels;
            int realWidth = realDisplayMetrics.widthPixels;

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

            int displayHeight = displayMetrics.heightPixels;
            int displayWidth = displayMetrics.widthPixels;

            hasSoftwareKeys = (realWidth - displayWidth) > 0 || (realHeight - displayHeight) > 0;
        } else {
            boolean hasMenuKey = ViewConfiguration.get(c).hasPermanentMenuKey();
            boolean hasBackKey = KeyCharacterMap.deviceHasKey(KeyEvent.KEYCODE_BACK);
            hasSoftwareKeys = !hasMenuKey && !hasBackKey;
        }
        return hasSoftwareKeys;
    }

score 0 · Answer 3 · edited May 23 '17 at 10:30

0

no will not work that way you have to compute the size

the method used is detailed in this SO answer;

How to get height and width of navigation bar programmatically

edited May 23 '17 at 10:30

Community

1
1

answered Oct 18 '16 at 20:48

Fred Grott

3,505
1
23
18

score 0 · Answer 4 · edited Aug 04 '18 at 20:32

0

Well, there is a method hasPermanentMenuKey which checks if the hardware MenuKey is present, usually Samsung devices has it on left size of Home button.

So if it returns true, it means the phone has hardware keys, and if it's false, then simply it means phone has navigation bar.

The method is:

ViewConfiguration.hasPermanentMenuKey()

I find it pretty useful for myself.

edited Aug 04 '18 at 20:32

halfer

19,824
17
99
186

answered Oct 19 '16 at 05:13

Atiq

14,435
6
54
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This doesnt work on devices like HTC one and one plus one . This always returns true – Suresh Kumar Oct 19 '16 at 05:49

Anh Duy · Answer 5 · 2019-12-11T09:32:52.187

//The method has ability to return 0 when the navigation bar was hidden.

private fun getNavigationBarHeight(context: Context): Int {
    val display = context.windowManager?.defaultDisplay
    return if (display == null) {
        0
    } else {
        val realMetrics = DisplayMetrics()
        display.getRealMetrics(realMetrics)
        val metrics = DisplayMetrics()
        display.getMetrics(metrics)
        realMetrics.heightPixels - metrics.heightPixels
    }
}

Detect soft navigation bar availability in onePlusOne device progmatically?

5 Answers5