使用 Jetpack Compose 轮廓创建芯片

Question

我有以下可组合函数来构建芯片：

@Composable
fun CategoryChip(
  category: String,
  isSelected: Boolean = false,
  onSelectedCategoryChanged: (String) -> Unit,
  onExecuteSearch: () -> Unit
) {
  Surface(
    modifier = Modifier.padding(end = 8.dp, bottom = 8.dp),
    elevation = 8.dp,
    shape = RoundedCornerShape(16.dp),
    color = when {
      isSelected -> colorResource(R.color.teal_200)
      else -> colorResource(R.color.purple_500)
    }
  ) {
    Row(modifier = Modifier
      .toggleable(
        value = isSelected,
        onValueChange = {
          onSelectedCategoryChanged(category)
          onExecuteSearch()
        }
      )) {
      Text(
        text = category,
        style = MaterialTheme.typography.body2,
        color = Color.White,
        modifier = Modifier.padding(8.dp)
      )
    }
  }
}

这将创建以下芯片：

但我想要实现的目标如下：

是否可以使用 Jetpack Compose 创建类似的形状？

Answer 1

从M2 开始，1.2.0-alpha02您可以使用Chip或 可FilterChip组合项：

Chip(
    onClick = { /* Do something! */ },
    border = BorderStroke(
         ChipDefaults.OutlinedBorderSize,
         Color.Red
    ),
    colors = ChipDefaults.chipColors(
        backgroundColor = Color.White,
        contentColor = Color.Red
    ),
    leadingIcon = {
        Icon(
            Icons.Filled.Settings,
            contentDescription = "Localized description"
        )
    }
) {
    Text("Change settings")
}

对于M3 ( androidx.compose.material3)，您可以使用以下选项之一：

• AssistChip
• FilterChip
• InputChip
• 建议芯片

就像是：

AssistChip(
    onClick = { /* Do something! */ },
    label = { Text("Assist Chip") },
    leadingIcon = {
        Icon(
            Icons.Filled.Settings,
            contentDescription = "Localized description",
            Modifier.size(AssistChipDefaults.IconSize)
        )
    }
)

Answer 2

是的，您所要做的就是在表面上添加边框。

Surface(
    modifier = Modifier.padding(end = 8.dp, bottom = 8.dp),
    elevation = 8.dp,
    shape = RoundedCornerShape(16.dp),
    border = BorderStroke(
        width = 1.dp,
        color = when {
            isSelected -> colorResource(R.color.teal_200)
            else -> colorResource(R.color.purple_500)
        }
     )
)

Answer 3

基于代码诗人的答案，我想展示如何制作具有背景颜色的材料芯片：

@Composable
fun buildChip(label: String, icon: ImageVector? = null) {
    Box(modifier = Modifier.padding(8.dp)) {
        Surface(
            elevation = 1.dp,
            shape = MaterialTheme.shapes.small,
            color = Color.LightGray
        ) {
            Row(verticalAlignment = Alignment.CenterVertically) {
                if (icon != null) Icon(
                    icon,
                    modifier = Modifier
                        .fillMaxHeight()
                        .padding(horizontal = 4.dp)
                )
                Text(
                    label,
                    modifier = Modifier.padding(8.dp),
                    style = MaterialTheme.typography.button.copy(color = Color.DarkGray)
                )
            }
        }
    }
}