Friday, November 9, 2012

stackoverflow - How to get screen dimensions

Question:

I created some custom elements and I want to programatically place them to the upper right corner (n pixels from the top edge and m pixels from the right edge) therefore I need to get the screen width and screen height and then set position:
int px = screenWidth - m;
int py = screenWidth - n;
Does anyone know how to get screenWidth and screenHeight in the main Activity?
Thanks

Best Answer:
If you want the the display dimensions in pixels you can use getSize:
Display display = getWindowManager().getDefaultDisplay();
Point size = new Point();
display.getSize(size);
int width = size.x;
int height = size.y;
If you're not in an Activity you can get the default Display via WINDOW_SERVICE:
WindowManager wm = (WindowManager) ctx.getSystemService(Context.WINDOW_SERVICE);
Display display = wm.getDefaultDisplay();
Before getSize was introduced (in API level 13), you could use the getWidth and getHeightmethods that are now deprecated:
Display display = getWindowManager().getDefaultDisplay(); 
int width = display.getWidth();  // deprecated
int height = display.getHeight();  // deprecated
For the use case you're describing however a margin/padding in the layout seems more appropriate.
Source: http://stackoverflow.com/questions/1016896/android-how-to-get-screen-dimensions

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