How to get screen resolution in Android Honeycomb?

Question

I want to get real resolution of screen on Android Honeycomb.

Here's my code

Display display = getWindowManager().getDefaultDisplay();
int w = display.getWidth();
int h = display.getHeight();

My device is Asus Transformer TF101 with size are 1280x800.

But above code make w = 1280 and h = 752 (That i want is 800 not 752).

I know h < 800 because it's subtracted for status bar.

Have any way to get real height of screen?

Many thanks!

Answer 1

You can extend a layout which will be your top layout (which will be set to fill_parent width and height) and override the onSizeChange(int width, int height, int oldwidth, int oldheight). The width and height is the real width and height of your display.

Answer 2

Use the DisplayMetrics structure, describing general information about the display, such as its size, density, and font scaling.

The code used to get the display's height is as follows:

DisplayMetrics metrics = new DisplayMetrics();
getWindowManager().getDefaultDisplay().getMetrics(metrics);

Log.d("log", "OOO " + metrics.heightPixels);

It's supposed to return the absolute height of the display, in pixels.

Answer 3

I have a Xoom in hand, and used getWindowManager().getDefaultDisplay() to retrieve the dimension, it returns me 1280 x 800 which is the full screen size. I wonder how to get the resolution minus navigation bar with API before version 3.0.

Answer 4

This is another viable solution for measuring the screen size (API 11+):

public static ABDimension calculateScreenDimensions(Activity activityGet)
{
    ABDimension abdReturn = new ABDimension();

    try
    {
        Rect rectGet = new Rect();
        Window winGet = null;
        DisplayMetrics displayMetrics = new DisplayMetrics();
        int nStatusBarHeight = 0;
        int nContentViewTop = 0;
        int nTitleBarHeight = 0;
        int nScreenHeight = 0;

        if((activityGet != null) && (rectGet != null) && (displayMetrics != null))
        {
            winGet = activityGet.getWindow();
            if(winGet != null)
            {
                winGet.getDecorView().getWindowVisibleDisplayFrame(rectGet);
                nStatusBarHeight = rectGet.top;
                nContentViewTop = winGet.findViewById(Window.ID_ANDROID_CONTENT).getTop();
                nTitleBarHeight = nContentViewTop - nStatusBarHeight;

                activityGet.getWindowManager().getDefaultDisplay().getMetrics(displayMetrics);
                int screenHeight = displayMetrics.heightPixels;
                abdReturn.nWidth = displayMetrics.widthPixels;
                abdReturn.nHeight = screenHeight - (nTitleBarHeight + nStatusBarHeight);
            }
        }
    }
    catch(Exception e)
    {
        appContext.showMessage(false,"Error","[calculateScreenDimensions]: "+e.toString());
    }

    return abdReturn;
}

Where the ABDimension class contains six integers labeled nWidth, nHeight, nMarginLeft, nMarginTop, nMarginRight and nMarginBottom. This version accounts for common Android decor components like the TitleBar/StatusBar.