TextField with Hint Text in Android using Jetpack Compose
In Jetpack Compose, a TextField is a UI element that lets users type in text as an input. This input can then be stored and used for various desired functions. In General, there is no hint for a TextField. However, we can customize TextField to display hints to the user.
So in this article, we will show you how you could display hints in TextField in Android using Jetpack Compose. Follow the below steps once the IDE is ready.
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: 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.w3wiki.jcdecorationbox import android.os.Bundle import androidx.activity.ComponentActivity import androidx.activity.compose.setContent import androidx.compose.foundation.background import androidx.compose.foundation.layout.* import androidx.compose.foundation.shape.RoundedCornerShape import androidx.compose.foundation.text.BasicTextField import androidx.compose.material.* import androidx.compose.runtime.getValue import androidx.compose.runtime.mutableStateOf import androidx.compose.runtime.remember import androidx.compose.runtime.setValue import androidx.compose.ui.Alignment import androidx.compose.ui.Modifier import androidx.compose.ui.graphics.Color import androidx.compose.ui.text.input.TextFieldValue import androidx.compose.ui.text.style.TextAlign import androidx.compose.ui.unit.dp class MainActivity : ComponentActivity() { override fun onCreate(savedInstanceState: Bundle?) { super .onCreate(savedInstanceState) setContent { // Creating a Simple Scaffold // Layout for the application Scaffold( // Creating a Top Bar topBar = { TopAppBar(title = { Text( "GFG | Decoration Box" , color = Color.White) }, backgroundColor = Color( 0xff0f9d58 )) }, // Creating Content content = { // Creating a Column Layout Column(Modifier.fillMaxSize(), horizontalAlignment = Alignment.CenterHorizontally, verticalArrangement = Arrangement.Center) { // Creating a variable to store the TextField value var value by remember { mutableStateOf(TextFieldValue( "" )) } // Creating a Basic TextField bu adding // innerTextField that will display the Text hint BasicTextField( value = value, onValueChange = { value = it }, decorationBox = { innerTextField -> Row( Modifier .background(Color.LightGray, RoundedCornerShape(percent = 30 )) .padding( 16 .dp) .fillMaxWidth() ) { if (value.text.isEmpty()) { Text( "Enter Something..." ) } // <-- Add this innerTextField() } }, ) } } ) } } } |
Output:
You can see that we are able to display the hint as shown in the below output video.