//获取是否存在NavigationBar
    public static boolean checkDeviceHasNavigationBar(Context context) {
        boolean hasNavigationBar = false;
        Resources rs = context.getResources();
        int id = rs.getIdentifier("config_showNavigationBar", "bool", "android");
        if (id > 0) {
            hasNavigationBar = rs.getBoolean(id);
        }
        try {
            Class systemPropertiesClass = Class.forName("android.os.SystemProperties");
            Method m = systemPropertiesClass.getMethod("get", String.class);
            String navBarOverride = (String) m.invoke(systemPropertiesClass, "qemu.hw.mainkeys");
            if ("1".equals(navBarOverride)) {
                hasNavigationBar = false;
            } else if ("0".equals(navBarOverride)) {
                hasNavigationBar = true;
            }
        } catch (Exception e) {

        }
        return hasNavigationBar;

    }

// 获取tNavigationBar高度
    public static  int getNavigationBarHeight(Activity activity) {
        int height=0;
        if(checkDeviceHasNavigationBar(activity)){
            Resources resources = activity.getResources();
            int resourceId = resources.getIdentifier("navigation_bar_height","dimen", "android");
            height= resources.getDimensionPixelSize(resourceId);

        }
        return height;
    }

// 获取状态栏高度
 public static int getStatusBarHeight(Activity activity) {
        int height = 0;
        int resourceId = activity.getResources().getIdentifier("status_bar_height", "dimen",
                "android");
        if (resourceId > 0) {
            height = activity.getResources().getDimensionPixelSize(resourceId);
        }
        return height;
    }