How can I get the size of the android application window and not the physical screen size?

If you want the size of your app's window you can just call yourview.getHeight() and yourview.getWidth(); But the view must be drawn for that to work.

If you want to get the height before it's drawn you can do this:

https://stackoverflow.com/a/10134260/1851478

There are a lot of different cases of screen/view measurement though, so if you could be more specific about "actual size of applications window", is this your app? Or the home screen app?, some other app?

If you want usable space minus decorations (status bar/soft button), you can attack it in reverse as well, for example measuring the actual screen dimensions (the methods vary by API), and then subtract the height of the status bar.

Example display height:

// Deprecated
((WindowManager) getSystemService(Context.WINDOW_SERVICE)).getDefaultDisplay().getHeight();

status bar height:

Rect rectgle= new Rect();
Window window= getWindow();
window.getDecorView().getWindowVisibleDisplayFrame(rectgle);
int StatusBarHeight= rectgle.top;

Or

int statusBarHeight = Math.ceil(25 * context.getResources().getDisplayMetrics().density);

Many different ways to do this.

Certainly need more info from you though to give a more accurate answer.

This is also pretty easy:

Rect windowRect = new Rect();

yourView.getWindowVisibleDisplayFrame(windowRect);

int hWindow = windowRect.height();
int wWindow = windowRect.width();