Размер экрана и аппаратное меню (совместимый SDK)

Я использовал Android SDK для решения этой проблемы. Вы можете посмотреть, как использовать java с соответствующей здесь.

Это мой java-код

public Point screenSize(Activity activity) {

    DisplayMetrics displayMetrics = new DisplayMetrics();
    WindowManager wm = (WindowManager) activity.getSystemService(Context.WINDOW_SERVICE);
    Display disp = wm.getDefaultDisplay();

    int API_LEVEL =  android.os.Build.VERSION.SDK_INT;
    if (API_LEVEL >= 17) {
        disp.getRealMetrics(displayMetrics);
    } else {
        disp.getMetrics(displayMetrics);
    }

    int width = displayMetrics.widthPixels;
    int height = displayMetrics.heightPixels;

    return new Point(width, height); //String.format("%d,%d,%d,%d", portraitNavBarHeight, landscapeNavBarHeight, width, height);
}

public Point navigationBarHeights(Activity activity) {

    Resources resources = activity.getResources();
    int resourceId = resources.getIdentifier("navigation_bar_height", "dimen", "android");
    int resourceIdLandscape = resources.getIdentifier("navigation_bar_height_landscape", "dimen", "android");
    int portraitNavBarHeight = 0;
    int landscapeNavBarHeight = 0;

    boolean hasPermanentMenuKey = ViewConfiguration.get(activity).hasPermanentMenuKey();
    if (resourceId > 0 && !hasPermanentMenuKey) {
        portraitNavBarHeight = resources.getDimensionPixelSize(resourceId);
    }

    if (resourceIdLandscape > 0 && !hasPermanentMenuKey) {
        landscapeNavBarHeight = resources.getDimensionPixelSize(resourceIdLandscape);
    }

    return new Point(portraitNavBarHeight, landscapeNavBarHeight); //String.format("%d,%d,%d,%d", portraitNavBarHeight, landscapeNavBarHeight, width, height);
}

и часть Objective-C

+ (void)initializeJava
{
[super initializeJava]; 

    // here your initialize code
    ...

    [KeyboardBridge registerInstanceMethod:@"screenSize"
                                  selector:@selector(screenSize:)
                               returnValue:[AndroidPoint className]
                                 arguments:[AndroidActivity className], nil];

    [KeyboardBridge registerInstanceMethod:@"navigationBarHeights"
                                  selector:@selector(navigationBarHeights:)
                               returnValue:[AndroidPoint className]
                                 arguments:[AndroidActivity className], nil];

}

- (CGRect)displayMetrics {
    AndroidPoint *screenSize = [self screenSize:[AndroidActivity currentActivity]];
    AndroidPoint *navigationBarHeights = [self navigationBarHeights:[AndroidActivity currentActivity]];

    return CGRectMake(navigationBarHeights.x, navigationBarHeights.y, screenSize.x, screenSize.y);
}

и окончательный результат

CGRect rect = [[[KeyboardBridge alloc] init] displayMetrics];

float portraitWidth;
float portraitHeight;
if(rect.size.width > rect.size.height) {
    portraitHeight = rect.size.width;
    portraitWidth = rect.size.height;
} else {
    portraitHeight = rect.size.height;
    portraitWidth = rect.size.width;
}

landscapeSize.width =  portraitHeight;
landscapeSize.height = portraitWidth - rect.origin.y;

portraitSize.width = portraitWidth;
portraitSize.height = portraitHeight - rect.origin.x;