Develop Reference

How DisplayMetrics gets its width and height?

I want to change the screen width and height for whole platform. So I want to know where should I change ?
As I understand that DisplayMetrics provides the width and height for all apps. How DisplayMetrics gets those width and height ? Any leads is appreciated.

For getting : width and height :
DisplayMetrics metrics = this.getResources().getDisplayMetrics();
int width = metrics.widthPixels;
int height = metrics.heightPixels;

i use this when i made a code to setup wallpaper :
DisplayMetrics dm = new DisplayMetrics();
getWindowManager().getDefaultDisplay().getMetrics(dm);
int width = dm.widthPixels;
int height = dm.heightPixels;

Get screen width and height in a Fragment

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.

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.

This will give you what you want without needing for context or view:
import android.content.res.Resources;
int width = Resources.getSystem().getDisplayMetrics().widthPixels;
int height = Resources.getSystem().getDisplayMetrics().heightPixels;

This code also works with Fragments:
int width = getResources().getConfiguration().screenWidthDp;
int height = getResources().getConfiguration().screenHeightDp;
For comparing orientation:
if(getResources().getConfiguration().orientation == Configuration.ORIENTATION_LANDSCAPE){...}

How to get screen resolution of your android device..? [duplicate]

This question already has answers here:
How to get screen dimensions as pixels in Android
(46 answers)
Closed 9 years ago.
Can i get resolution of android phone..?
if yes then how..?
it will really helpful for me..
Thank you..

If you want the display dimensions in pixels you can use getSize:
Display display = getWindowManager().getDefaultDisplay();
Point size = new Point();
display.getSize(size);
int width = size.x;
int height = size.y;
This method was introduced in Android API 13, so if you want to get display metrics for previous APIs use:
DisplayMetrics displaymetrics = new DisplayMetrics();
getWindowManager().getDefaultDisplay().getMetrics(displaymetrics);
int height = displaymetrics.heightPixels;
int wwidth = displaymetrics.widthPixels;
If you're not in an Activity, you can get the default Display via WINDOW_SERVICE. Also be sure to set your minSdkVersion to at least 4 in AndroidManifest.xml to enable calls to display.getWidth().
WindowManager wm = (WindowManager) ctx.getSystemService(Context.WINDOW_SERVICE);
Display display = wm.getDefaultDisplay();
int width = display.getWidth(); // deprecated
int height = display.getHeight(); // deprecated
Edit: PhoneGap
Use the following to figure out the display size in pixels
function getDeviceDimention() {
console.log("Device Dimention using PhoneGap");
console.log("Width = " + window.innerWidth);
console.log("Height = " + window.innerHeight);
}

For Cordova / Phonegap, I've found that using
var width = screen.width
var height = screen.height
is more reliable than using
var width = window.innerHeight
var height = window.innerWidth
in order to obtain the resolution of the current display. The latter is unfortunately inaccurate if your mark-up either overflows or does not take up all of the space available on the screen.

For phonegap you can use this
You can use device-width and device-height
<meta name="viewport" content="width=device-width; user-scalable=no" />
You can even get device height and width using jquery & jquery mobile like this
var width = $(window).width();
var height = $(window).height();
NOTE:- Do this when device is ready.

You can call
Display display = getWindow().getWindowManager().getDefaultDisplay();
Point outSize = new Point();
display.getRealSize(outSize);
outSize.x is the width and outSize.y is the height. Hope it help.

like this
Display display = getWindowManager().getDefaultDisplay();
int width = display.getWidth();
int height = display.getHeight();
look at this answer Android: How to get screen dimensions

DisplayMetrics dm = new DisplayMetrics();
getWindowManager().getDefaultDisplay().getMetrics(dm);
int width = dm.widthPixels;
int height = dm.heightPixels;
Good luck!

DisplayMetrics metrics = new DisplayMetrics();
getWindowManager().getDefaultDisplay().getMetrics(metrics);
good luck
행운을 빈다.

u can get screen resolution like this
Display display = ((WindowManager) getSystemService(Context.WINDOW_SERVICE)).getDefaultDisplay();
int width = display.getWidth();
int height=display.getHeight();

Not able to get the correct size of the screen in android 2.3?

I am trying to get the size of the screen. The size I have set for emulator is 540 x 960 but what I am getting is 320 x 480. Any suggestions on it to get the right size. Here is the code;
DisplayMetrics dm = new DisplayMetrics();
getWindowManager().getDefaultDisplay().getMetrics(dm);
width = dm.widthPixels;
height = dm.heightPixels;

Try this:
Display display = ((WindowManager) getSystemService(WINDOW_SERVICE)).getDefaultDisplay();
int width = display.getWidth();
int height = display.getHeight();

try this one:
int height = getWindowManager().getDefaultDisplay().getHeight();
int width = getWindowManager().getDefaultDisplay().getWidth();

Android: Get the screen resolution / pixels as integer values

this is a really simple question on which I've found no answer :/
How can I quickly access the screen resolution (width, height) as integer values?
I've tried this one, but it always shows zero on my emulator:
DisplayMetrics dm = new DisplayMetrics();
int width = dm.widthPixels / 2;
In my case I want to dynamically create a table with tableRows, each containing two cols. This cols all shall fill half of the screen in width.
Can someone give me a hint?

The trashkalmar answer is correct.
However, the results will be specific to the activity context. If you want the whole device screen resolution:
DisplayMetrics displayMetrics = new DisplayMetrics();
WindowManager wm = (WindowManager) getApplicationContext().getSystemService(Context.WINDOW_SERVICE); // the results will be higher than using the activity context object or the getWindowManager() shortcut
wm.getDefaultDisplay().getMetrics(displayMetrics);
int screenWidth = displayMetrics.widthPixels;
int screenHeight = displayMetrics.heightPixels;
Note that the results also depend on the current device orientation.

You can get screen metrics in this way:
Display d = ((WindowManager)getSystemService(Context.WINDOW_SERVICE)).getDefaultDisplay();
int width = d.getWidth();
int height = d.getHeight();

1.Simply use This inside activity to get screen width and height pixels.
DisplayMetrics metrics = new DisplayMetrics();
getWindowManager().getDefaultDisplay()
.getMetrics(metrics);
int width = metrics.widthPixels;
int height = metrics.heightPixels;
2.This can also be used But requires Api level inlined check
Display display = getWindowManager().getDefaultDisplay();
Point size = new Point();
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.HONEYCOMB_MR2) {
display.getSize(size);
int width2 = size.x;
int height2 = size.y;
} else {
int width2 = display.getWidth();
int height2 = display.getHeight();
}
3.Use This when you are not in activity but having context
WindowManager wm = (WindowManager) context.getSystemService(
Context.WINDOW_SERVICE);
Display display1 = wm.getDefaultDisplay();
Point size1 = new Point();
int width1;
int height1;
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.HONEYCOMB_MR2) {
display1.getSize(size1);
width1 = size1.x;
height1 = size1.y;
} else {
width2 = display.getWidth();
height2 = display.getHeight();
}

I use the following:
int scrWidth = getWindowManager().getDefaultDisplay().getWidth();
int scrHeight = getWindowManager().getDefaultDisplay().getHeight();
No muss, no fuss, just 2 class variables

The easiest way will be to implement onSizeChanged. You are probably getting a value of 0 because the view hasn't initialized yet. You can't call the above code in the View constructor for example.