Add toggle buttons to your app

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We recommend using Material Components for Jetpack Compose to add toggle buttons to your app. The following example shows how to implement a Switch:

@Composable
fun SwitchComposable(modifier: Modifier = Modifier) {
    Switch(
        checked = false,
        modifier = modifier,
        onCheckedChange = { isChecked ->
            if (isChecked) {
                // The switch is checked.
            } else {
                // The switch isn't checked.
            }
        }
    )
}

The onCheckedChanged lamba is called every time the checked state of the Switch changes, and the value of isChecked indicates the new checked state.

Add toggle buttons using views

If you're using a View-based layout, there are three main choices for implementing toggles. We recommend using the SwitchMaterial component from the Material Components library:

<androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:padding="16dp">

    <com.google.android.material.switchmaterial.SwitchMaterial
        android:id="@+id/material_switch"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="@string/material_switch"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toTopOf="parent" />

</androidx.constraintlayout.widget.ConstraintLayout>

Legacy apps might still use the older SwitchCompat AppCompat component, as shown in the following example:

<androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:padding="16dp">

    <androidx.appcompat.widget.SwitchCompat
        android:id="@+id/switchcompat"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="@string/switchcompat"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toTopOf="parent" />

</androidx.constraintlayout.widget.ConstraintLayout>

The following example shows AppCompatToggleButton, which is another legacy component that has a noticeably different UI:

<androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:padding="16dp">

    <TextView
        android:id="@+id/toggle_button_label"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintEnd_toStartOf="@id/toggle"
        app:layout_constraintHorizontal_chainStyle="packed"
        app:layout_constraintBaseline_toBaselineOf="@id/toggle"
        android:text="@string/toggle_button" />

    <androidx.appcompat.widget.AppCompatToggleButton
        android:id="@+id/toggle"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintStart_toEndOf="@id/toggle_button_label"
        app:layout_constraintTop_toTopOf="parent"
        app:layout_constraintBottom_toBottomOf="parent"/>

</androidx.constraintlayout.widget.ConstraintLayout>

These three components offer the same behavior but look different. The differences between the SwitchMaterial and SwitchCompat are subtle, but AppCompatToggleButton is noticeably different:

The SwitchMaterial, SwitchCompat, and AppCompatToggleButton
Controls

Figure 1. Three toggle button types.

Handle state changes

SwitchMaterial, SwitchCompat, and AppCompatToggleButton are all subclasses of CompoundButton, which gives them a common mechanism for handling checked state changes. You implement an instance of CompoundButton.OnCheckedChangeListener and add it to the button, as shown in the following example:

Kotlin

class MainActivity : AppCompatActivity() {
    override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)

        val binding: SwitchLayoutBinding = SwitchLayoutBinding.inflate(layoutInflater)
        setContentView(binding.root)

        binding.materialSwitch.setOnCheckedChangeListener { _, isChecked ->
            if (isChecked) {
                // The switch is checked.
            } else {
                // The switch isn't checked.
            }
        }
    }
}

Java

public class MainActivity extends AppCompatActivity {

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);

        SwitchLayoutBinding binding = SwitchLayoutBinding.inflate(getLayoutInflater());
        setContentView(binding.getRoot());

        binding.materialSwitch.setOnCheckedChangeListener((buttonView, isChecked) -> {
            if (isChecked) {
                // The switch is checked.
            } else {
                // The switch isn't checked.
            }
        });
    }
}

CompoundButton.OnCheckedChangeListener is a single abstract method interface (or SAM interface), so you can implement it as a lambda. The lambda is called whenever the checked state changes, and the value of the isChecked boolean that is passed to the lambda indicates the new checked state.