Compose TimePicker

预览

Composable

import androidx.compose.foundation.background
import androidx.compose.foundation.layout.Column
import androidx.compose.foundation.layout.Row
import androidx.compose.foundation.layout.fillMaxWidth
import androidx.compose.foundation.layout.padding
import androidx.compose.foundation.shape.RoundedCornerShape
import androidx.compose.material.Button
import androidx.compose.material.ButtonDefaults
import androidx.compose.material3.BasicAlertDialog
import androidx.compose.material3.ExperimentalMaterial3Api
import androidx.compose.material3.Text
import androidx.compose.material3.TimePicker
import androidx.compose.material3.TimePickerLayoutType
import androidx.compose.material3.rememberTimePickerState
import androidx.compose.runtime.Composable
import androidx.compose.ui.Alignment
import androidx.compose.ui.Modifier
import androidx.compose.ui.graphics.Color
import androidx.compose.ui.tooling.preview.Preview
import androidx.compose.ui.unit.TextUnit
import androidx.compose.ui.unit.TextUnitType
import androidx.compose.ui.unit.dp
import java.util.Calendar

@OptIn(ExperimentalMaterial3Api::class)
@Composable
@Preview
fun TimePickerExample() {

    val currentTime = Calendar.getInstance()
    val state = rememberTimePickerState(
        initialHour = currentTime.get(Calendar.HOUR_OF_DAY),
        initialMinute = currentTime.get(Calendar.MINUTE),
        is24Hour = true,
    )

    val hour = state.hour
    val minute = state.minute
    val selectedValue ="$hour:$minute"
    Text(
        selectedValue,
        modifier = Modifier,
        fontSize = TextUnit(18f, TextUnitType.Sp)
    )


    BasicAlertDialog(
        modifier = Modifier, onDismissRequest = {},
        content = {
            Column(
                modifier = Modifier
                    .background(
                        color = Color.White, shape = RoundedCornerShape(8.dp)
                    )
                    .padding(start = 10.dp, end = 10.dp, top = 5.dp)
            ) {
                Row(verticalAlignment = Alignment.CenterVertically, modifier = Modifier.padding(bottom = 5.dp, start = 20.dp, end = 20.dp)) {
                    Text(
                        "选择时间",
                        modifier = Modifier.weight(1f),
                        fontSize = TextUnit(18f, TextUnitType.Sp)
                    )
                    Button(
                        onClick = {
                            state.hour
                        },
                        shape = RoundedCornerShape(90.dp),
                        colors = ButtonDefaults.buttonColors(backgroundColor = Color(0xff6750A4))
                    ) {
                        Text("确认", color = Color.White)
                    }
                }
                TimePicker(state, modifier = Modifier.fillMaxWidth(), layoutType = TimePickerLayoutType.Vertical)
            }
        },
    )
}

原文地址：https://blog.csdn.net/u012127961/article/details/144455663

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