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hcarrasko
Asked: 2020-12-18 05:00:37 +0800 CST 2020-12-18 05:00:37 +0800 CST

How to get screen dimensions in Android?

  • 772

I am trying to get the screen dimensions of an Android device, I am trying with this code:

Display display = getWindowManager().getDefaultDisplay(); 
int width = display.getWidth();  // obsoleto (deprecated)
int height = display.getHeight();  // obsoleto (deprecated)

Which is obsolete (deprecated), what would be the current correct way to obtain the dimensions of the device screen?

java

5 Answers

  1. Best Answer

    You can use DisplayMetrics

    DisplayMetrics metrics = new DisplayMetrics();
getWindowManager().getDefaultDisplay().getMetrics(metrics);
int width = metrics.widthPixels; // ancho absoluto en pixels 
int height = metrics.heightPixels; // alto absoluto en pixels

    Note: This form is supported from API Level 1

    • 9

  2. The correct thing to obtain the screen dimensions in Android and to work correctly in all APIs would be:

    Display display = getWindowManager().getDefaultDisplay();    
    if (Build.VERSION.SDK_INT > Build.VERSION_CODES.HONEYCOMB_MR1) {  // > API 12
        Point size = new Point();
        display.getSize(size);
        width = size.x;
        height = size.y;
    } else {
        width   = display.getWidth();
        height  = display.getHeight();
    }

    Another way would be using:

    DisplayMetrics A structure that describes general information about a display, such as its size, density, and font scaling.

    To access members DisplayMetrics, initialize an object like this:

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

    • Another way would be:

      int widthPixels = getResources().getDisplayMetrics().widthPixels;
int heightPixels = getResources().getDisplayMetrics().heightPixels;
    • 3

  3. You can do it this way:

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

    Although the old way continues to work correctly.

    • 2

  4. You can also try using the getResources method automatically without importing new classes

    int width = this.getResources().getConfiguration().screenWidthDp;

int height = this.getResources().getConfiguration().screenHeightDp;
    • 1

  5. I am new to the forum and thank you all for your multiple contributions regarding this topic I see that everything said works well but not in the case that I am developing a Custom component that extends LinearLayout or any ViewGroup if you want to take the screen dimensions from a class like the one I'm commenting on (then note that I'm not in the Activity but in an extended class of LinearLayout) Only this has worked for me:

        int width = this.getResources().getDisplayMetrics().widthPixels;
    int height = this.getResources().getDisplayMetrics().heightPixels;
    • 0