我有一个数据类:
data class Feed_Status(val img:Int, val name_id: String)
我上课:
class Feed_helper {
fun Image_getter(): List<() -> Feed_Status> {
val Images = listOf {
Feed_Status(R.drawable.image_demo1, "name1")
Feed_Status(R.drawable.image_demo2, "name2")
Feed_Status(R.drawable.image_demo3, "name3")
Feed_Status(R.drawable.image_demo4, "name4")
Feed_Status(R.drawable.image_demo5, "name5")
Feed_Status(R.drawable.image_demo6, "name6")
Feed_Status(R.drawable.image_demo7, "name7")
Feed_Status(R.drawable.image_demo8, "name8")
Feed_Status(R.drawable.image_demo9, "name9")
Feed_Status(R.drawable.image_demo10, "name10")
Feed_Status(R.drawable.image_demo11, "name11")
Feed_Status(R.drawable.image_demo12, "name12")
Feed_Status(R.drawable.image_demo13, "name13")
Feed_Status(R.drawable.image_demo14, "name14")
Feed_Status(R.drawable.image_demo15, "name15")
Feed_Status(R.drawable.image_demo16, "name16")
Feed_Status(R.drawable.image_demo17, "name17")
Feed_Status(R.drawable.image_demo18, "name18")
Feed_Status(R.drawable.image_demo19, "name19")
Feed_Status(R.drawable.image_demo20, "name20")
Feed_Status(R.drawable.image_demo21, "name21")
Feed_Status(R.drawable.image_demo22, "name22")
Feed_Status(R.drawable.image_demo23, "name23")
Feed_Status(R.drawable.image_demo24, "name24")
Feed_Status(R.drawable.image_demo25, "name25")
Feed_Status(R.drawable.image_demo25, "name26")
}
return Images
}
}
通过它我在lazyRow
中调用items()
@Composable
fun feed() {
LazyColumn(
reverseLayout = false,
modifier = Modifier
.fillMaxSize(),
userScrollEnabled = true
) {
// Status(es)
item {
LazyRow(
reverseLayout = false,
modifier = Modifier
.fillMaxWidth()
.height(100.dp),
horizontalArrangement = Arrangement.SpaceBetween,
userScrollEnabled = true
) {
val statuses = Feed_helper().Image_getter()
items(statuses) { status ->
Column(
verticalArrangement = Arrangement.Center,
modifier = Modifier
.width(80.dp)
) {
Card(
shape = CircleShape,
modifier = Modifier
.padding(8.dp)
.size(64.dp)
) {
Image(
painterResource(id = status.img),
contentDescription = status.name_id + "'s status",
contentScale = ContentScale.Crop
)
}
Text(
text = status.name_id,
modifier = Modifier.fillMaxWidth(),
textAlign = TextAlign.Center,
)
}
}
}
}
}
}
但是每当我在items()
中从statuses
到statuses
调用元素时,它给我的是Reference Not found!
来电者:Image()
中的painterResource(id = status.img)
Image()
中的contentDescription = status.name_id + "'s status"
在Text
中的text = status.name_id
所有呼叫者都在items(statuses){ status ->
中
我花了几个小时来解决这个问题。所以任何帮助都将非常感激。
如果你发现任何错字,请更新它或告诉我修复。
PS:这是我第一次来这里,我对Android开发和Kotlin几乎没有任何经验。我开发了终端应用程序,用Python、C++、C进行了ML工作。所以我可能需要更多的信息来解释。我一周前才开始学习Android开发。
编辑:你可以问我任何更多的信息。
平安
1条答案
按热度按时间0yg35tkg1#
将
Image_getter
的返回类型更改为List<Feed_status>
,而不是lambda类型,并在声明大括号列表时将大括号更改为圆括号。以及导入了