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236
app/src/main/java/com/aiosman/riderpro/PagingSimple.kt
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236
app/src/main/java/com/aiosman/riderpro/PagingSimple.kt
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package com.aiosman.riderpro
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import androidx.annotation.DrawableRes
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import androidx.compose.foundation.Image
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import androidx.compose.foundation.border
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import androidx.compose.foundation.layout.Arrangement
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import androidx.compose.foundation.layout.Box
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import androidx.compose.foundation.layout.Column
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import androidx.compose.foundation.layout.Row
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import androidx.compose.foundation.layout.defaultMinSize
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import androidx.compose.foundation.layout.fillMaxHeight
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import androidx.compose.foundation.layout.fillMaxSize
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import androidx.compose.foundation.layout.fillMaxWidth
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import androidx.compose.foundation.layout.height
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import androidx.compose.foundation.layout.offset
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import androidx.compose.foundation.layout.padding
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import androidx.compose.foundation.layout.size
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import androidx.compose.foundation.layout.wrapContentWidth
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import androidx.compose.foundation.lazy.LazyColumn
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import androidx.compose.material3.CircularProgressIndicator
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import androidx.compose.material3.LocalTextStyle
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import androidx.compose.material3.Text
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import androidx.compose.runtime.Composable
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import androidx.compose.runtime.remember
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import androidx.compose.ui.Alignment
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import androidx.compose.ui.Modifier
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import androidx.compose.ui.graphics.Color
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import androidx.compose.ui.res.painterResource
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import androidx.compose.ui.res.stringResource
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import androidx.compose.ui.text.PlatformTextStyle
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import androidx.compose.ui.text.TextStyle
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import androidx.compose.ui.text.font.FontWeight
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import androidx.compose.ui.text.style.LineHeightStyle
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import androidx.compose.ui.text.style.TextAlign
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import androidx.compose.ui.unit.dp
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import androidx.compose.ui.unit.em
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import androidx.compose.ui.unit.sp
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import androidx.paging.LoadState
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import androidx.paging.Pager
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import androidx.paging.PagingConfig
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import androidx.paging.compose.collectAsLazyPagingItems
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private val DATA = (0..60).toList().map { momentTestItem}
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@Composable
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fun PagingBackendSample() {
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val myBackend = remember { TestBackend(DATA) }
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val pager = remember {
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Pager(
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PagingConfig(
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pageSize = myBackend.DataBatchSize,
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enablePlaceholders = true,
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maxSize = 200
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)
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) {
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myBackend.getAllData()
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}
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}
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val lazyPagingItems = pager.flow.collectAsLazyPagingItems()
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LazyColumn {
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if (lazyPagingItems.loadState.refresh == LoadState.Loading) {
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item {
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MomentListLoading()
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}
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}
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items(count = lazyPagingItems.itemCount) { index ->
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val item = lazyPagingItems[index]
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if (item != null) {
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MomentCard(item)
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}
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}
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if (lazyPagingItems.loadState.append == LoadState.Loading) {
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item {
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MomentListLoading()
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}
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}
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}
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}
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@Composable
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fun MomentCard(momentItem: MomentItem){
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Column(
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modifier = Modifier.fillMaxWidth()
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){
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MomentTopRowGroup(momentItem = momentItem)
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MomentContentGroup(momentItem = momentItem)
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val momentOperateBtnBoxModifier = Modifier.fillMaxHeight().weight(1f)
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MomentBottomOperateRowGroup(momentOperateBtnBoxModifier)
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}
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}
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@Composable
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fun MomentName(name: String){
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Text(
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modifier = Modifier,
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textAlign = TextAlign.Start,
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text = name,
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color = Color(0f,0f,0f),
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fontSize = 16.sp, style = TextStyle(fontWeight = FontWeight.Bold))
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}
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@Composable
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fun MomentFollowBtn(){
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Box(modifier = Modifier
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.size(width = 53.dp, height = 18.dp)
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.padding(start = 8.dp),
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contentAlignment = Alignment.Center){
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Image(
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modifier = Modifier
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.fillMaxSize(),
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painter = painterResource(id = R.drawable.follow_bg),
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contentDescription = ""
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)
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Text(text = "Follow",
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color = Color.White,
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fontSize = 12.sp)
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}
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}
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@Composable
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fun MomentPostLocation(location: String){
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Text(text = location,
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color = Color(0f,0f,0f,0.6f),
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fontSize = 12.sp)
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}
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@Composable
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fun MomentPostTime(time: String){
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Text(modifier = Modifier.padding(start = 8.dp),
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text = time, color = Color(0f,0f,0f,0.6f),
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fontSize = 12.sp
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)
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}
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@Composable
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fun MomentTopRowGroup(momentItem: MomentItem){
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Row (modifier = Modifier
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.height(40.dp)
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.padding(top = 0.dp, bottom = 0.dp, start = 24.dp, end = 24.dp)
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){
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Image(
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painter = painterResource(id = momentItem.avatar),
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contentDescription = ""
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)
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Column(
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modifier = Modifier
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.defaultMinSize()
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.padding(start = 12.dp, end = 12.dp)
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) {
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Row (modifier = Modifier
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.fillMaxWidth()
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.height(22.dp),
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verticalAlignment = Alignment.CenterVertically
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){
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MomentName(momentItem.nickname)
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MomentFollowBtn()
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}
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Row (modifier = Modifier
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.fillMaxWidth()
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.height(21.dp),
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verticalAlignment = Alignment.CenterVertically
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){
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MomentPostLocation(momentItem.location)
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MomentPostTime(momentItem.time)
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}
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}
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}
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}
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@Composable
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fun MomentContentGroup(momentItem: MomentItem){
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Text(text = momentItem.momentTextContent,
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modifier = Modifier
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.fillMaxWidth()
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.padding(top = 22.dp, bottom = 16.dp, start = 24.dp, end = 24.dp),
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fontSize = 16.sp
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)
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Image(
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modifier = Modifier
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.fillMaxWidth(),
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painter = painterResource(id = momentItem.momentPicture),
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contentDescription = ""
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)
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}
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@Composable
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fun MomentOperateBtn(@DrawableRes icon: Int, count: String){
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Row (verticalAlignment = Alignment.CenterVertically){
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Image(
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modifier = Modifier
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.size(width = 24.dp, height = 24.dp),
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painter = painterResource(id = icon),
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contentDescription = "")
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Text(text = count,
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modifier = Modifier.padding(start = 7.dp),
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fontSize = 12.sp,)
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}
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}
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@Composable
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fun MomentBottomOperateRowGroup(modifier: Modifier){
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Row (modifier = Modifier
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.fillMaxWidth()
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.height(56.dp)){
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Box(modifier = modifier,
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contentAlignment = Alignment.Center
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){
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MomentOperateBtn(icon = R.drawable.rider_pro_like, count = "21")
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}
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Box(modifier = modifier,
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contentAlignment = Alignment.Center
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){
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MomentOperateBtn(icon = R.drawable.rider_pro_moment_comment, count = "43")
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}
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Box(modifier = modifier,
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contentAlignment = Alignment.Center
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){
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MomentOperateBtn(icon = R.drawable.rider_pro_share, count = "33")
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}
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Box(modifier = modifier,
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contentAlignment = Alignment.Center
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){
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MomentOperateBtn(icon = R.drawable.rider_pro_favoriate, count = "211")
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}
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}
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}
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@Composable
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fun MomentListLoading(){
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CircularProgressIndicator(
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modifier =
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Modifier
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.fillMaxWidth()
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.wrapContentWidth(Alignment.CenterHorizontally),
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color = Color.Red
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)
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}
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