Error getting window size on android: "The method getWindowManager is undefined"

Question

I need to get the window height and the weight.
I have this in my code:

DisplayMetrics metrics = new DisplayMetrics();
getWindowManager().getDefaultDisplay().getMetrics(metrics);
width1 = metrics.widthPixels; 
height1 = metrics.heightPixels;

but I have an error:

The method getWindowManager is undefined

what i should import for this? or i can get the sizes of the screed in different ways? i have imported

import android.view.Display;
import android.view.Window;
import android.view.WindowManager;
import android.content.Context;
import android.util.DisplayMetrics;

score 49 · Answer 1 · edited Jan 12 '12 at 10:57

Where are you using this code?

The error of the getWindowManager says that cannot find the method because the root of your class doesn't have it.

Try this:

((Activity) getContext()).getWindowManager().getDefaultDisplay().getMetrics(metrics);

or

((WindowManager) getContext().getSystemService(Context.WINDOW_SERVICE))
  .getDefaultDisplay().getMetrics(metrics);

If this doesn't work, please paste your activity

score 5 · Answer 2 · edited Aug 21 '19 at 10:17

5

Use this:

 display = ((WindowManager) getSystemService(Context.WINDOW_SERVICE)).getDefaultDisplay();
 display.getWidth(); // to get width of the screen
 display.getHeight(); // to get height of the Screen

UPDATE

Please review the Android-Developer site. For more reference.

You can use below snippet of code to fetch height-width of the device.

Display display = getWindowManager().getDefaultDisplay();
Point size = new Point();
display.getSize(size);
int width = size.x;
int height = size.y;

edited Aug 21 '19 at 10:17

halfer

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answered Jan 12 '12 at 11:21

Shreyash Mahajan

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5

getHeight() is now deprecated – IgorGanapolsky Sep 06 '12 at 14:39
@IgorG.: can you give me the link where it is said that it is deprecated ? – Shreyash Mahajan Sep 07 '12 at 09:36

score 2 · Answer 3 · answered Aug 20 '15 at 16:42

2

Use the Context of the activity with getActivityContext()

DisplayMetrics metrics = new DisplayMetrics();
getActivityContext().getWindowManager().getDefaultDisplay().getMetrics(metrics);
width1 = metrics.widthPixels; 
height1 = metrics.heightPixels;

answered Aug 20 '15 at 16:42

Jorgesys

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score 1 · Answer 4 · answered Jul 17 '15 at 15:44

1

You could use this for example if you are using it inside a fragment:

getActivity().getWindowManager().getDefaultDisplay().getMetrics(metrics);

answered Jul 17 '15 at 15:44

Vas

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score 0 · Answer 5 · answered Mar 10 '19 at 16:32

it works for me

import android.app.Activity;

((Activity)getContext()).getWindowManager().getDefaultDisplay().getMetrics(metrics);

mediaProjectionManager = (MediaProjectionManager)((Activity) getContext()).getSystemService(Context.MEDIA_PROJECTION_SERVICE);

jeet · Answer 6 · 2012-01-12T11:02:31.677

0

Please check if you are calling above method in an activity class, or outside activity.

For Wallpaper, this method is not availed to you to get height or width of window, you need to get width and height of available window by using surface.

edited Jan 12 '12 at 11:02

answered Jan 12 '12 at 10:54

jeet

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no, i am doing a live wallpaper and i am calling this in the Engine of the wallpaper – Harsan Valentin Jan 12 '12 at 10:56

Error getting window size on android: "The method getWindowManager is undefined"

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