How to get screen width and height

Question

I tried to use following code to get screen width and height in android app development:

Display display = getWindowManager().getDefaultDisplay(); 
int scree         


        

Answer 1

below answer support api level below and above 10

 if (Build.VERSION.SDK_INT >= 11) {
            Point size = new Point();
            try {
                this.getWindowManager().getDefaultDisplay().getRealSize(size);
                screenWidth = size.x;
                screenHeight = size.y;
            } catch (NoSuchMethodError e) {
                 screenHeight = this.getWindowManager().getDefaultDisplay().getHeight();
                 screenWidth=this.getWindowManager().getDefaultDisplay().getWidth();
            }

        } else {
            DisplayMetrics metrics = new DisplayMetrics();
            this.getWindowManager().getDefaultDisplay().getMetrics(metrics);
            screenWidth = metrics.widthPixels;
            screenHeight = metrics.heightPixels;
        }

Answer 2

Within an activity, you can call:

int width = this.getResources().getDisplayMetrics().widthPixels;
int height = this.getResources().getDisplayMetrics().heightPixels;

When you're in a View, then you need to get the Context first:

int width = getApplicationContext().getResources().getDisplayMetrics().widthPixels;
int height = getApplicationContext().getResources().getDisplayMetrics().heightPixels;

This will work in all Android version, available since API 1, and never deprecated.

Answer 3

if (Build.VERSION.SDK_INT >= 11) {
        Point size = new Point();
        try {
            this.getWindowManager().getDefaultDisplay().getRealSize(size);
            screenWidth = size.x;
            screenHeight = size.y;
        } catch (NoSuchMethodError e) {
             screenHeight = this.getWindowManager().getDefaultDisplay().getHeight();
             screenWidth=this.getWindowManager().getDefaultDisplay().getWidth();
        }

    } else {
        DisplayMetrics metrics = new DisplayMetrics();
        this.getWindowManager().getDefaultDisplay().getMetrics(metrics);
        screenWidth = metrics.widthPixels;
        screenHeight = metrics.heightPixels;
    }

Answer 4

Try via context.getResources().getDisplayMetrics() if you have a context available.

Answer 5

If you're calling this outside of an Activity, you'll need to pass the context in (or get it through some other call). Then use that to get your display metrics:

DisplayMetrics metrics = context.getResources().getDisplayMetrics();
int width = metrics.widthPixels;
int height = metrics.heightPixels;

UPDATE: With API level 17+, you can use getRealSize:

Point displaySize = new Point();
activity.getWindowManager().getDefaultDisplay().getRealSize(displaySize);

If you want the available window size, you can use getDecorView to calculate the available area by subtracting the decor view size from the real display size:

Point displaySize = new Point();
activity.getWindowManager().getDefaultDisplay().getRealSize(displaySize);

Rect windowSize = new Rect();
ctivity.getWindow().getDecorView().getWindowVisibleDisplayFrame(windowSize);

int width = displaySize.x - Math.abs(windowSize.width());
int height = displaySize.y - Math.abs(windowSize.height());
return new Point(width, height);

getRealMetrics may also work (requires API level 17+), but I haven't tried it yet:

DisplayMetrics metrics = new DisplayMetrics();
activity.GetWindowManager().getDefaultDisplay().getRealMetrics(metrics);

Answer 6

Try with the following code to get width and height of screen

int widthOfscreen =0;
int heightOfScreen = 0;
DisplayMetrics dm = new DisplayMetrics();
        try {
            ((Activity) context).getWindowManager().getDefaultDisplay()
                    .getMetrics(dm);
        } catch (Exception ex) {
        }
         widthOfscreen  = dm.widthPixels;
heightOfScreen  = dm.heightPixels;