Android Jetpack Compose NumberPicker Widget Equivalent

user_7176213 0
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What is the recommended solution for creating a NumberPicker Widget in Jetpack Compose? Similar to the image below. I am able to create an NumberPicker using an AndroidView within my composable but the view does not seem to allow flings or snap to position. Btw the UI below shows three NumberPickers placed in a row. It is not supposed to represent a DatePicker

enter image description here

numberpicker android-number-picker android-jetpack android-jetpack-compose kotlin
3 Answers

By coincidence I've implemented a screen like that last week. I can't share the whole code here, but basically what I did was:

  1. Create a layout with a DatePicker (res/layout/date_picker.xml).
<DatePicker xmlns:android="http://schemas.android.com/apk/res/android"
    android:id="@+id/datePicker"
    android:theme="@style/DatePickerStyle"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:calendarViewShown="false"
    android:datePickerMode="spinner" />
  1. Then, use it in your composable function.
@Composable
fun DatePicker(
    onDateSelected: (Date) -> Unit
) {
    AndroidView(
        modifier = Modifier.fillMaxWidth(),
        factory = { context ->
            val view = LayoutInflater.from(context).inflate(R.layout.date_picker, null)
            val datePicker = view.findViewById<DatePicker>(R.id.datePicker)
            val calendar = Calendar.getInstance() // show today by default
            datePicker.init(
                calendar.get(Calendar.YEAR),
                calendar.get(Calendar.MONTH),
                calendar.get(Calendar.DAY_OF_MONTH)
            ) { _, year, monthOfYear, dayOfMonth ->
                val date = Calendar.getInstance().apply {
                    set(year, monthOfYear, dayOfMonth)
                }.time
                onSelectedDateUpdate(date)
            }
            datePicker
        }
    )
}
  1. Finally, use it in a ModalBottomSheetLayout

Editing my answer... Using a NumberPicker working as well...

AndroidView(
    modifier = Modifier.fillMaxWidth(),
    factory = { context ->
        NumberPicker(context).apply {
            setOnValueChangedListener { numberPicker, i, i2 ->  }
            minValue = 0
            maxValue = 50
        }
    }
)

Here is the result.

enter image description here

user_10943330

I know maybe you are not looking for something like this. But since there is no such widget in compose yet and compose is all about making your way easier to build your own component. So Apart from android.widget NumberPicker, you can make something like this one. You can change the visualization more like the NumberPicker widget and add your callback and stuff.

Have you checked this one on github? ComposeNumberPicker.Kt

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