Checkbox in Android using Jetpack Compose - GeeksforGeeks

25 Feb, 2021
The checkbox is a composable function that is used to represent two states of any item in Android. It is used to differentiate an item from the list of items. In this article, we will take a look at the implementation of Simple Checkbox in Android using Jetpack Compose. 
Attributes
Uses
Step 1: Create a New Project
To create a new project in the Android Studio Canary Version please refer to How to Create a new Project in Android Studio Canary Version with Jetpack Compose.
Step 2: Working with the MainActivity.kt file
Navigate to the app > java > your app’s package name and open the MainActivity.kt file. Inside that file add the below code to it. Comments are added inside the code to understand the code in more detail.
Kotlin
import android.graphics.drawable.shapes.Shapeimport android.media.Imageimport android.os.Bundleimport android.widget.Toastimport androidx.appcompat.app.AppCompatActivityimport androidx.compose.foundation.*import androidx.compose.foundation.Textimport androidx.compose.foundation.layout.*import androidx.compose.foundation.shape.CircleShapeimport androidx.compose.foundation.shape.RoundedCornerShapeimport androidx.compose.foundation.text.KeyboardOptionsimport androidx.compose.material.*import androidx.compose.material.Iconimport androidx.compose.material.icons.Iconsimport androidx.compose.material.icons.filled.AccountCircleimport androidx.compose.material.icons.filled.Infoimport androidx.compose.material.icons.filled.Menuimport androidx.compose.material.icons.filled.Phoneimport androidx.compose.runtime.*import androidx.compose.runtime.savedinstancestate.savedInstanceStateimport androidx.compose.ui.Alignmentimport androidx.compose.ui.layout.ContentScaleimport androidx.compose.ui.platform.setContentimport androidx.compose.ui.res.imageResourceimport androidx.compose.ui.tooling.preview.Previewimport androidx.compose.ui.unit.dpimport com.example.gfgapp.ui.GFGAppThemeimport androidx.compose.ui.Modifierimport androidx.compose.ui.draw.clipimport androidx.compose.ui.graphics.Colorimport androidx.compose.ui.graphics.SolidColorimport androidx.compose.ui.platform.ContextAmbientimport androidx.compose.ui.platform.testTagimport androidx.compose.ui.res.colorResourceimport androidx.compose.ui.semantics.SemanticsProperties.ToggleableStateimport androidx.compose.ui.text.TextStyleimport androidx.compose.ui.text.font.FontFamilyimport androidx.compose.ui.text.input.*import androidx.compose.ui.unit.Dpimport androidx.compose.ui.unit.TextUnit  class MainActivity : AppCompatActivity() {    override fun onCreate(savedInstanceState: Bundle?) {        super.onCreate(savedInstanceState)        setContent {            Column {                // in below line we are                   // calling a checkbox method.                 SimpleCheckboxComponent()            }        }    }}  @Preview(showBackground = true)@Composablefun DefaultPreview() {    GFGAppTheme {        SimpleCheckboxComponent();    }}    @Composablefun SimpleCheckboxComponent() {    // in below line we are setting     // the state of our checkbox.    val checkedState = remember { mutableStateOf(true) }    // in below line we are displaying a row      // and we are creating a checkbox in a row.     Row {        Checkbox(            // below line we are setting               // the state of checkbox.            checked = checkedState.value,            // below line is use to add padding              // to our checkbox.             modifier = Modifier.padding(16.dp),            // below line is use to add on check               // change to our checkbox.             onCheckedChange = { checkedState.value = it },        )        // below line is use to add text to our check box and we are          // adding padding to our text of checkbox        Text(text = "Checkbox Example", modifier = Modifier.padding(16.dp))    }}
Now run your app and see the output of the app.
Android-Jetpack
Technical Scripter 2020
Android
Kotlin
Technical Scripter
Android
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