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How to Get Screen Width and Height in Android using Jetpack Compose?

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Android applications are being developed for different device orientations to support a huge range of devices. So that users with different device size configurations can use the application. Many applications need to get the height and width of the device screen to create UI. In this article, we will take a look at How to get Screen Width and Height in Android using Jetpack Compose

Step by Step Implementation

Step 1: Create a New Project in Android Studio

To create a new project in Android Studio please refer to How to Create/Start a New Project in Android Studio. While choosing the template, select Empty Compose Activity. If you do not find this template, try upgrading the Android Studio to the latest version. We demonstrated the application in Kotlin, so make sure you select Kotlin as the primary language while creating a New Project.

Step 2: Adding a new color to the Color.kt file

Navigate to app > java > your app’s package name > ui.theme > Color.kt file and add the below code to it. 

Kotlin




package com.example.newcanaryproject.ui.theme
  
import androidx.compose.ui.graphics.Color
  
val Purple200 = Color(0xFF0F9D58)
val Purple500 = Color(0xFF0F9D58)
val Purple700 = Color(0xFF3700B3)
val Teal200 = Color(0xFF03DAC5)
  
// on the below line we are adding different colors.
val greenColor = Color(0xFF0F9D58)


Step 3: Working with the MainActivity.kt file

Go to the MainActivity.kt file and refer to the following code. Below is the code for the MainActivity.kt file. Comments are added inside the code to understand the code in more detail.

Kotlin




package com.example.newcanaryproject
  
import android.app.Activity
import android.content.Context
import android.net.Uri
import android.os.Bundle
import android.util.DisplayMetrics
import android.view.WindowManager
import android.widget.Chronometer
import android.widget.MediaController
import android.widget.Toast
import android.widget.VideoView
import androidx.activity.ComponentActivity
import androidx.activity.compose.setContent
import androidx.compose.foundation.layout.*
import androidx.compose.material.*
import androidx.compose.material.icons.Icons
import androidx.compose.material.icons.filled.Add
import androidx.compose.runtime.*
import androidx.compose.ui.Alignment
import androidx.compose.ui.Modifier
import androidx.compose.ui.graphics.*
import androidx.compose.ui.platform.LocalContext
import androidx.compose.ui.text.TextStyle
import androidx.compose.ui.text.font.FontFamily
import androidx.compose.ui.text.font.FontWeight
import androidx.compose.ui.text.input.TextFieldValue
import androidx.compose.ui.text.style.TextAlign
import androidx.compose.ui.unit.*
import com.example.newcanaryproject.ui.theme.*
import dev.shreyaspatil.easyupipayment.EasyUpiPayment
import dev.shreyaspatil.easyupipayment.listener.PaymentStatusListener
import dev.shreyaspatil.easyupipayment.model.PaymentApp
import dev.shreyaspatil.easyupipayment.model.TransactionDetails
import java.text.SimpleDateFormat
import java.util.*
  
class MainActivity : ComponentActivity() {
  
    override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)
        setContent {
            NewCanaryProjectTheme {
                // on below line we are specifying background color for our application
                Surface(
                    // on below line we are specifying modifier and color for our app
                    modifier = Modifier.fillMaxSize(), color = MaterialTheme.colors.background
                ) {
  
                    // on the below line we are specifying the theme as the scaffold.
                    Scaffold(
  
                        // in scaffold we are specifying the top bar.
                        topBar = {
  
                            // inside top bar we are specifying background color.
                            TopAppBar(backgroundColor = greenColor,
  
                                // along with that we are specifying title for our top bar.
                                title = {
  
                                    // in the top bar we are specifying tile as a text
                                    Text(
  
                                        // on below line we are specifying
                                        // text to display in top app bar.
                                        text = "GFG",
  
                                        // on below line we are specifying
                                        // modifier to fill max width.
                                        modifier = Modifier.fillMaxWidth(),
  
                                        // on below line we are specifying
                                        // text alignment.
                                        textAlign = TextAlign.Center,
  
                                        // on below line we are specifying
                                        // color for our text.
                                        color = Color.White
                                    )
                                })
                        }) {
                        // on below line we are calling 
                        // floating action buttons to display our fabs.
                        widthHeight(windowManager)
                    }
                }
            }
        }
    }
}
  
@Composable
fun widthHeight(windowManager: WindowManager) {
  
    // on the below line we are creating a column.
    Column(
        // on below line we are adding a modifier to it
        // and setting max size, max height and max width
        modifier = Modifier
            .fillMaxSize()
            .fillMaxHeight()
            .fillMaxWidth(),
  
        // on below line we are adding vertical
        // arrangement and horizontal alignment.
        verticalArrangement = Arrangement.Center,
        horizontalAlignment = Alignment.CenterHorizontally
    ) {
  
        // on below line we are creating a text
        Text(
            // on below line we are specifying text as
            // Session Management in Android.
            text = "Width and Height of Android Device",
  
            // on below line we are specifying text color.
            color = greenColor,
  
            // on below line we are specifying font family
            fontFamily = FontFamily.Default,
  
            // on below line we are adding font weight
            // and alignment for our text
            fontWeight = FontWeight.Bold, textAlign = TextAlign.Center
        )
  
        // on below line we are creating and
        // initializing variable for display metrics.
        val displayMetrics = DisplayMetrics()
  
        // on below line we are getting metrics
        // for display using window manager.
        windowManager.defaultDisplay.getMetrics(displayMetrics)
  
        // on below line we are getting height
        // and width using display metrics.
        val height = displayMetrics.heightPixels
        val width = displayMetrics.widthPixels
        val str = "Width : " + width + "\n" + "Height : " + height
  
        // on below line we are creating a text
        Text(
            // on below line we are specifying text as
            // Session Management in Android.
            text = str,
  
            // on below line we are specifying text color.
            color = greenColor,
  
            // on below line we are specifying font family
            fontFamily = FontFamily.Default,
  
            // on below line we are adding font weight
            // and alignment for our text
            fontWeight = FontWeight.Bold, textAlign = TextAlign.Center
        )
    }
}


Now run your application to see the output of it. 

Output:

 Get Screen Width and Height in Android using Jetpack Compose

 



Last Updated : 18 Aug, 2022
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