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@shakir915
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DatePicker Jetpack Compose Desktop & Android
package shakir.kadakkadan.datepicker
import androidx.compose.foundation.background
import androidx.compose.foundation.clickable
import androidx.compose.foundation.interaction.MutableInteractionSource
import androidx.compose.foundation.layout.*
import androidx.compose.material.Icon
import androidx.compose.material.Text
import androidx.compose.material.icons.Icons
import androidx.compose.material.icons.outlined.ArrowBackIosNew
import androidx.compose.material.icons.outlined.ArrowForwardIos
import androidx.compose.runtime.*
import androidx.compose.ui.Alignment
import androidx.compose.ui.Modifier
import androidx.compose.ui.composed
import androidx.compose.ui.draw.drawBehind
import androidx.compose.ui.graphics.Color
import androidx.compose.ui.text.style.TextAlign
import androidx.compose.ui.unit.dp
import androidx.compose.ui.unit.sp
import java.text.SimpleDateFormat
import java.util.*
import kotlin.collections.ArrayList
@Composable
fun DatePicker() {
var showingMonth by remember { mutableStateOf(Calendar.getInstance()) }
var selected by remember { mutableStateOf(Calendar.getInstance().apply { timeInMillis = showingMonth.timeInMillis }) }
var list by remember { mutableStateOf(getDatesList(showingMonth)) }
val weeks = arrayOf("S", "M", "T", "W", "T", "F", "S")
val cellSize = 40.dp
Box(
modifier = Modifier.fillMaxSize()
.background(Color(0xFF000000)).noRippleClickable {
}, contentAlignment = Alignment.Center
) {
Column(modifier = Modifier.width(IntrinsicSize.Max)) {
Column(modifier = Modifier.fillMaxWidth().background(Color(0xFF018677)).padding(16.dp)) {
Text(SimpleDateFormat("yyyy", Locale.ENGLISH).format(selected.time), color = Color.White.copy(alpha = .7f))
Spacer(modifier = Modifier.height(8.dp))
Text(SimpleDateFormat("EEE, d MMM", Locale.ENGLISH).format(selected.time), color = Color.White, fontSize = 27.sp)
}
Column(modifier = Modifier.background(Color(0xFFffffff))) {
Box(modifier = Modifier.fillMaxWidth().padding(start = 16.dp, end = 16.dp, bottom = 12.dp)) {
Icon(Icons.Outlined.ArrowBackIosNew, "", tint = Color(0xFF212121), modifier = Modifier.size((16 * 3).dp).align(Alignment.CenterStart).clickable {
showingMonth = Calendar.getInstance().apply { timeInMillis = showingMonth.timeInMillis;add(Calendar.MONTH, -1) }
list = getDatesList(showingMonth)
}.padding(16.dp))
Text(SimpleDateFormat("MMM yyyy", Locale.ENGLISH).format(showingMonth.time), color = Color(0xFF212121), modifier = Modifier.align(Alignment.Center))
Icon(Icons.Outlined.ArrowForwardIos, "", tint = Color(0xFF212121), modifier = Modifier.size((16 * 3).dp).align(Alignment.CenterEnd).clickable {
showingMonth = Calendar.getInstance().apply { timeInMillis = showingMonth.timeInMillis;add(Calendar.MONTH, +1) }
list = getDatesList(showingMonth)
}.padding(16.dp))
}
Row(modifier = Modifier.padding(start = 16.dp, end = 16.dp)) {
weeks.forEach {
Text(it, color = Color(0xFF757575), fontSize = 14.sp,textAlign = TextAlign.Center, modifier = Modifier.size(cellSize))
}
}
list.chunked(7).forEach {
Row(modifier = Modifier.padding(start = 16.dp, end = 16.dp)) {
it.forEach {
Box(contentAlignment = Alignment.Center, modifier = Modifier.size(cellSize).clickable {
if (isSameMonth(it?.first, showingMonth)) {
selected = Calendar.getInstance().apply { timeInMillis = it!!.first!! }
}
}.drawBehind {
drawCircle(
color = if (it?.second == true && isSelected(it?.first, selected, showingMonth)) Color(0xFF018677) else Color.Transparent,
)
}) {
Text(
toDate(it?.first), textAlign = TextAlign.Center,fontSize = 14.sp,
color = if (it?.second == true) {
if (isSelected(it?.first, selected, showingMonth))
Color(0xFFffffff)
else
Color(0xFF757575)
} else if (it?.second == false) Color(0x11757575) else Color(0),
)
}
}
}
}
Row(horizontalArrangement = Arrangement.End, modifier = Modifier.fillMaxWidth().padding(end = 16.dp)) {
Text("Cancel", color = Color(0xFF018677), modifier = Modifier.clickable {
}.padding(16.dp))
Text("OK", color = Color(0xFF018677), modifier = Modifier.clickable {
}.padding(16.dp))
}
}
}
}
}
private fun Modifier.noRippleClickable(onClick: () -> Unit): Modifier = composed {
clickable(indication = null,
interactionSource = remember { MutableInteractionSource() }) {
onClick()
}
}
private fun getDatesList(calIncoming: Calendar): ArrayList<Pair<Long, Boolean>?> {
val cal = Calendar.getInstance().apply { timeInMillis = calIncoming.timeInMillis }
val list = arrayListOf<Pair<Long, Boolean>?>()
cal.set(Calendar.DATE, 1)
val currentMont = cal.get(Calendar.MONTH)
while (cal.get(Calendar.MONTH) == currentMont) {
list.add(cal.timeInMillis to true)
cal.add(Calendar.DATE, 1)
}
while (cal.get(Calendar.DAY_OF_WEEK) != Calendar.SUNDAY) {
list.add(cal.timeInMillis to false)
cal.add(Calendar.DATE, 1)
}
cal.set(Calendar.DATE, 1)
cal.add(Calendar.MONTH, -1)
cal.add(Calendar.DATE, -1)
while (cal.get(Calendar.DAY_OF_WEEK) != Calendar.SATURDAY) {
list.add(0, cal.timeInMillis to false)
cal.add(Calendar.DATE, -1)
}
if (list.size < 7 * 6) {
while (list.size < (7 * 6)) {
list.add(null)
}
}
return list
}
private fun isSelected(first: Long, selected: Calendar, showing: Calendar): Boolean {
return (selected.get(Calendar.YEAR) == showing.get(Calendar.YEAR) &&
selected.get(Calendar.MONTH) == showing.get(Calendar.MONTH)
&& selected.get(Calendar.DATE) == Calendar.getInstance().apply {
timeInMillis = first
}.get(Calendar.DATE)
)
}
private fun isSameMonth(first: Long?, showing: Calendar): Boolean {
return if (first == null) false
else {
val cal = Calendar.getInstance().apply {
timeInMillis = first
}
cal.get(Calendar.MONTH) == showing.get(Calendar.MONTH) && cal.get(Calendar.YEAR) == showing.get(Calendar.YEAR)
}
}
private fun toDate(first: Long?): String {
if (first == null) return ""
return SimpleDateFormat("d", Locale.ENGLISH).format(Date(first))
}
/*****
implementation("androidx.compose.foundation:foundation:1.3.1")
implementation("androidx.compose.ui:ui:1.3.2")
implementation("androidx.compose.ui:ui-graphics:1.3.2")
implementation("androidx.compose.material:material-icons-core:1.3.1")
implementation("androidx.compose.material:material:1.3.1")
implementation("androidx.compose.material:material-icons-extended:1.3.1")
******/
@shakir915
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@marcelosanto
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thanks

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