Text Clock in Android using Jetpack Compose
Text Clock is a UI widget in android which is used to display the current time in android applications. This widget displays the current time in a simple text view. The text clock widget displays a time in 12 and 24 hours format. In this article, we will take a look at How to use the TextClock widget on 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 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.Manifest.permission.READ_EXTERNAL_STORAGE import android.app.Activity import android.content.BroadcastReceiver import android.content.Context import android.content.Intent import android.content.IntentFilter import android.content.pm.PackageManager import android.content.res.ColorStateList import android.database.Cursor import android.os.Bundle import android.os.Environment import android.provider.MediaStore import android.util.Log import android.widget.TextClock import android.widget.Toast import androidx.activity.ComponentActivity import androidx.activity.compose.setContent import androidx.compose.foundation.ExperimentalFoundationApi import androidx.compose.foundation.Image import androidx.compose.foundation.layout.* import androidx.compose.foundation.lazy.GridCells import androidx.compose.foundation.lazy.LazyVerticalGrid import androidx.compose.material.* import androidx.compose.runtime.* import androidx.compose.ui.Alignment import androidx.compose.ui.Modifier import androidx.compose.ui.graphics.Color import androidx.compose.ui.platform.LocalContext import androidx.compose.ui.res.colorResource import androidx.compose.ui.res.painterResource import androidx.compose.ui.semantics.Role.Companion.Image import androidx.compose.ui.text.font.FontWeight import androidx.compose.ui.text.style.TextAlign import androidx.compose.ui.unit.* import androidx.compose.ui.viewinterop.AndroidView import androidx.core.app.ActivityCompat import androidx.core.app.ActivityCompat.requestPermissions import androidx.core.content.ContextCompat import androidx.localbroadcastmanager.content.LocalBroadcastManager import coil.compose.rememberImagePainter import com.example.newcanaryproject.MainActivity2 import com.example.newcanaryproject.R import com.example.newcanaryproject.ui.theme.* import java.io.File 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( modifier = Modifier.fillMaxSize(), color = MaterialTheme.colors.background ) { // on below line we are specifying theme as scaffold. Scaffold( // in scaffold we are specifying 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 // display text clock function. displayTxtClock() } } } } } } // on below line we are creating // a function for our text clock. @Composable fun displayTxtClock() { // on below line we are creating // a column on below sides. Column( // on below line we are adding padding // padding for our column and filling the max size. Modifier .fillMaxSize() .fillMaxHeight() .fillMaxWidth(), // on below line we are adding // horizontal alignment for our column horizontalAlignment = Alignment.CenterHorizontally, // on below line we are adding // vertical arrangement for our column verticalArrangement = Arrangement.Center ) { Text( // on below line we are specifying text // to display in top app bar. text = "Text Clock in Android" , // 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 = greenColor, // on below line we are // updating font size. fontSize = 25 .sp, ) // on below line we are creating a spacer. Spacer(modifier = Modifier.height( 20 .dp)) // on below line we are creating a text clock. AndroidView( // on below line we are initializing our text clock. factory = { context -> TextClock(context).apply { // on below line we are setting 12 hour format. format12Hour?.let { this .format12Hour = "hh:mm:ss a" } // on below line we are setting time zone. timeZone?.let { this .timeZone = it } // on below line we are setting text size. textSize.let { this .textSize = 30f } } }, // on below line we are adding padding. modifier = Modifier.padding( 5 .dp), ) } } |
Now run your application to see the output of it.
Output:
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