How to get screen display metrics in application class

Question

If I put this in some activity class it works perfectly but, when I put it in my App class the method getWindowManager() can not be found. Is there some way to

Answer 1

Try this:

Display display = getWindowManager().getDefaultDisplay();
Log.e("", "" + display.getHeight() + " " + display.getWidth());

Answer 2

Without Context use -

Resources.getSystem().displayMetrics.widthPixels

With Context -

context?.resources?.displayMetrics?.widthPixels

Note : getWindowManager().getDefaultDisplay().getMetrics(dm); returns void in the new API.

Answer 3

final DisplayMetrics dm = new DisplayMetrics();
getWindowManager().getDefaultDisplay().getMetrics(dm);

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

getWindow().setLayout((int) (width * .8), (int) (height * .5));

Answer 4

Here, Context.getResource()

DisplayMetrics dm = getResources().getDisplayMetrics(); 
int densityDpi = dm.densityDpi;

Answer 5

hope this will work for you

DisplayMetrics displayMetrics = context.getResources().getDisplayMetrics();
int pxWidth = displayMetrics.widthPixels;
int pxHeight = displayMetrics.heightPixels;

Answer 6

You can also try this:

WindowManager wm = (WindowManager) getSystemService(WINDOW_SERVICE);
final DisplayMetrics displayMetrics = new DisplayMetrics();
wm.getDefaultDisplay().getMetrics(displayMetrics);
int height = displayMetrics.heightPixels;
int width = displayMetrics.widthPixels;