How do I get the ScreenSize programmatically in an

Question

Android defines screen sizes as Normal Large XLarge etc.

It automatically picks between static resources in appropriate folders. I need this data about the current device in my java code. The DisplayMetrics only gives information about the current device density. Nothing is available regarding screen size.

I did find the ScreenSize enum in grep code here However this does not seem available to me for 4.0 SDK. Is there a way to get this information?

Answer 1

Determine Screen Size :

int screenSize = getResources().getConfiguration().screenLayout &Configuration.SCREENLAYOUT_SIZE_MASK;
  switch(screenSize) {
      case Configuration.SCREENLAYOUT_SIZE_LARGE:
        Toast.makeText(this, "Large screen",Toast.LENGTH_LONG).show();
         break;
       case Configuration.SCREENLAYOUT_SIZE_NORMAL:
          Toast.makeText(this, "Normal screen",Toast.LENGTH_LONG).show();
           break;
       case Configuration.SCREENLAYOUT_SIZE_SMALL:
           Toast.makeText(this, "Small screen",Toast.LENGTH_LONG).show();
           break;
       default:
           Toast.makeText(this, "Screen size is neither large, normal or small" , Toast.LENGTH_LONG).show();

 }

Determine density:

int density= getResources().getDisplayMetrics().densityDpi;
   switch(density)
  {
  case DisplayMetrics.DENSITY_LOW:
     Toast.makeText(context, "LDPI", Toast.LENGTH_SHORT).show();
      break;
  case DisplayMetrics.DENSITY_MEDIUM:
       Toast.makeText(context, "MDPI", Toast.LENGTH_SHORT).show();
      break;
  case DisplayMetrics.DENSITY_HIGH:
      Toast.makeText(context, "HDPI", Toast.LENGTH_SHORT).show();
      break;
  case DisplayMetrics.DENSITY_XHIGH:
       Toast.makeText(context, "XHDPI", Toast.LENGTH_SHORT).show();
      break;
  }

for Ref: http://devl-android.blogspot.in/2013/10/wifi-connectivity-and-hotspot-in-android.html

Answer 2

If you are in a non-activity i.e. Fragment, Adapter, Model class or any other java class that do not extends Activity simply getResources() will not work. You can use getActivity() in fragment or use context that you pass to the corresponding class.

mContext.getResources()

I would recommend making a class say Utils that will have method/Methods for the common work. The benefit for this is you can get desired result with single line of code anywhere in the app calling this method.

Answer 3

I need this for a couple of my apps and the following code was my solution to the problem. Just showing the code inside onCreate. This is a stand alone app to run on any device to return the screen info.

setContentView(R.layout.activity_main);
    txSize = (TextView) findViewById(R.id.tvSize);

    density = (TextView) findViewById(R.id.density);
    densityDpi = (TextView) findViewById(R.id.densityDpi);
    widthPixels = (TextView) findViewById(R.id.widthPixels);
    xdpi = (TextView) findViewById(R.id.xdpi);
    ydpi = (TextView) findViewById(R.id.ydpi);

    Configuration config = getResources().getConfiguration();

    if ((getResources().getConfiguration().screenLayout & Configuration.SCREENLAYOUT_SIZE_MASK) == Configuration.SCREENLAYOUT_SIZE_LARGE) {
        Toast.makeText(this, "Large screen", Toast.LENGTH_LONG).show();
        txSize.setText("Large screen");
    } else if ((getResources().getConfiguration().screenLayout & Configuration.SCREENLAYOUT_SIZE_MASK) == Configuration.SCREENLAYOUT_SIZE_NORMAL) {
        Toast.makeText(this, "Normal sized screen", Toast.LENGTH_LONG)
                .show();
        txSize.setText("Normal sized screen");
    } else if ((getResources().getConfiguration().screenLayout & Configuration.SCREENLAYOUT_SIZE_MASK) == Configuration.SCREENLAYOUT_SIZE_SMALL) {
        Toast.makeText(this, "Small sized screen", Toast.LENGTH_LONG)
                .show();
        txSize.setText("Small sized screen");
    } else if ((getResources().getConfiguration().screenLayout & Configuration.SCREENLAYOUT_SIZE_MASK) == Configuration.SCREENLAYOUT_SIZE_XLARGE) {
        Toast.makeText(this, "xLarge sized screen", Toast.LENGTH_LONG)
                .show();
        txSize.setText("Small sized screen");
    } else {
        Toast.makeText(this,
                "Screen size is neither large, normal or small",
                Toast.LENGTH_LONG).show();
        txSize.setText("Screen size is neither large, normal or small");
    }

    Display display = getWindowManager().getDefaultDisplay();
    DisplayMetrics metrics = new DisplayMetrics();
    display.getMetrics(metrics);

    Log.i(TAG, "density :" + metrics.density);
    density.setText("density :" + metrics.density);

    Log.i(TAG, "D density :" + metrics.densityDpi);
    densityDpi.setText("densityDpi :" + metrics.densityDpi);

    Log.i(TAG, "width pix :" + metrics.widthPixels);
    widthPixels.setText("widthPixels :" + metrics.widthPixels);

    Log.i(TAG, "xdpi :" + metrics.xdpi);
    xdpi.setText("xdpi :" + metrics.xdpi);

    Log.i(TAG, "ydpi :" + metrics.ydpi);
    ydpi.setText("ydpi :" + metrics.ydpi);

And a simple XML file

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical"
tools:context=".MainActivity" >

<TextView
    android:id="@+id/tvSize"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
     />
<TextView
    android:id="@+id/density"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
     />
<TextView
    android:id="@+id/densityDpi"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
     />
<TextView
    android:id="@+id/widthPixels"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
     />
<TextView
    android:id="@+id/xdpi"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
     />
<TextView
    android:id="@+id/ydpi"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    />

Answer 4

I must be missing something. DisplayMetrics.widthPixels, DisplayMetrics.heightPixels?

http://developer.android.com/reference/android/util/DisplayMetrics.html#heightPixels

[EDIT]

Ah, I am missing something. A brain! +1 for Alex.

Answer 5

simon-

Different screen sizes have different pixel densities. A 4 inch display on your phone could have more or less pixels then say a 26 inch TV. If Im understanding correctly he wants to detect which of the size groups the current screen is, small, normal, large, and extra large. The only thing I can think of is to detect the pixel density and use that to determine the actual size of the screen.

Answer 6

DisplayMetrics displayMetrics = new DisplayMetrics();

getWindowManager().getDefaultDisplay().getMetrics(displayMetrics);

int width = displayMetrics.widthPixels;

int height = displayMetrics.heightPixels;