[英]Jetpack compose - How to do popBackStack with arguments?
[英]How to do Multiline chip group in Jetpack Compose?
因此,我創建了一個可組合的 Chip 並在 LazyRow 中使用它,如下所示:
LazyRow(
modifier = modifier,
horizontalArrangement = Arrangement.spacedBy(16.dp),
){
items.forEach { it ->
item {
CustomChip(
item = it,
isSelected = it == currentItem,
onItemChanged = {
onItemChanged(it)
}
)
}
}
}
但是,我想獲得像上面提到的圖像一樣的布局。 即,如果芯片數量達到屏幕末端,那么新芯片應該排在新的線上。
更新。 現在您可以使用伴奏FlowRow
:
FlowRow(
modifier = modifier,
mainAxisSpacing = 16.dp,
crossAxisSpacing = 16.dp,
) {
items.forEach { it ->
CustomChip(
item = it,
isSelected = it == currentItem,
onItemChanged = {
onItemChanged(it)
}
)
}
}
原答案。 如果你有興趣自己構建這樣的東西,你可以用Layout
來做:
@Composable
fun ChipVerticalGrid(
modifier: Modifier = Modifier,
spacing: Dp,
content: @Composable () -> Unit
) {
Layout(
content = content,
modifier = modifier
) { measurables, constraints ->
var currentRow = 0
var currentOrigin = IntOffset.Zero
val spacingValue = spacing.toPx().toInt()
val placeables = measurables.map { measurable ->
val placeable = measurable.measure(constraints)
if (currentOrigin.x > 0f && currentOrigin.x + placeable.width > constraints.maxWidth) {
currentRow += 1
currentOrigin = currentOrigin.copy(x = 0, y = currentOrigin.y + placeable.height + spacingValue)
}
placeable to currentOrigin.also {
currentOrigin = it.copy(x = it.x + placeable.width + spacingValue)
}
}
layout(
width = constraints.maxWidth,
height = placeables.lastOrNull()?.run { first.height + second.y } ?: 0
) {
placeables.forEach {
val (placeable, origin) = it
placeable.place(origin.x, origin.y)
}
}
}
}
用法:
val words = "Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua."
.split(" ")
ChipVerticalGrid(
spacing = 7.dp,
modifier = Modifier
.padding(7.dp)
) {
words.forEach { word ->
Text(
word,
modifier = Modifier
.background(color = Color.Gray, shape = CircleShape)
.padding(vertical = 3.dp, horizontal = 5.dp)
)
}
}
結果:
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