Question

If I extend activity in my app I can get width and height:

DisplayMetrics displaymetrics = new DisplayMetrics();
getWindowManager().getDefaultDisplay().getMetrics(displaymetrics);
int height = displaymetrics.heightPixels;
int wwidth = displaymetrics.widthPixels;

or

Display display = getWindowManager().getDefaultDisplay(); 
stageWidth = display.getWidth();
stageHeight = display.getHeigth();

But at present I extend fragment and I can’t use the above code to get the width.

Answer 1

Try below modifed code of yours

DisplayMetrics displaymetrics = new DisplayMetrics();
getActivity().getWindowManager().getDefaultDisplay().getMetrics(displaymetrics);
int height = displaymetrics.heightPixels;
int width = displaymetrics.widthPixels;

or

Display display = getActivity().getWindowManager().getDefaultDisplay(); 
int stageWidth = display.getWidth();
int stageHeight = display.getHeight();

Basically you just required to put getActivity() (to get the context) before getWindowManager() function.