最近想做一个TableView,主要用于展示表格数据,并且要支持滑动和自定义表格内部的元素(子view)样式,左上角的“lock”白色块,我把它称为“lockView”;上方的“abc”列我把它称为“horizontalView”;左侧的“1234567”列我把它称为“verticalView”。中间标为“GridView”的地方,表示数据域。slide表示滑动方向;lock代表滑动锁定。例如当该表格发生水平滑动时,左侧的“verticalView”是不发生变化的,同理,当发生垂直滑动时,上方的“horizontalView”是不发生变化的,请问怎么写安卓代码
时间: 2023-10-06 18:10:54 浏览: 70
Android代码-TableView
好的,以下是一个简单的安卓代码示例,用于展示表格数据,并支持滑动和自定义样式:
1. 布局文件:在布局文件中定义一个RecyclerView作为TableView的容器,并设置LayoutManager和Adapter。
```
<androidx.recyclerview.widget.RecyclerView
android:id="@+id/table_view"
android:layout_width="match_parent"
android:layout_height="match_parent"
app:layoutManager="androidx.recyclerview.widget.LinearLayoutManager"
app:adapter="@{viewModel.adapter}" />
```
2. Model:定义一个Model类来表示表格数据,例如:
```
data class TableItem(
val row: Int,
val column: Int,
val value: String
)
```
3. Adapter:编写一个RecyclerView的Adapter来显示表格数据,并根据滑动方向锁定对应的View。代码中使用了DataBinding来绑定数据和布局。
```
class TableAdapter(private val data: List<TableItem>) :
RecyclerView.Adapter<TableAdapter.ViewHolder>() {
private var slideDirection = SlideDirection.NONE
override fun onCreateViewHolder(parent: ViewGroup, viewType: Int): ViewHolder {
val inflater = LayoutInflater.from(parent.context)
val binding = DataBindingUtil.inflate<ItemTableBinding>(
inflater,
R.layout.item_table,
parent,
false
)
return ViewHolder(binding)
}
override fun onBindViewHolder(holder: ViewHolder, position: Int) {
val item = data[position]
holder.binding.item = item
holder.binding.lockView.visibility =
if (slideDirection == SlideDirection.BOTH || slideDirection == SlideDirection.HORIZONTAL && item.row == 0 || slideDirection == SlideDirection.VERTICAL && item.column == 0) View.VISIBLE else View.GONE
holder.binding.horizontalView.visibility =
if (slideDirection == SlideDirection.BOTH || slideDirection == SlideDirection.HORIZONTAL && item.row == 0) View.VISIBLE else View.GONE
holder.binding.verticalView.visibility =
if (slideDirection == SlideDirection.BOTH || slideDirection == SlideDirection.VERTICAL && item.column == 0) View.VISIBLE else View.GONE
}
override fun getItemCount() = data.size
fun setSlideDirection(direction: SlideDirection) {
slideDirection = direction
notifyDataSetChanged()
}
class ViewHolder(val binding: ItemTableBinding) : RecyclerView.ViewHolder(binding.root)
}
enum class SlideDirection {
NONE,
HORIZONTAL,
VERTICAL,
BOTH
}
```
4. ViewModel:编写一个ViewModel类来管理表格数据和Adapter,并提供接口来设置滑动方向。
```
class TableViewModel : ViewModel() {
val adapter = TableAdapter(generateData())
fun setSlideDirection(direction: SlideDirection) {
adapter.setSlideDirection(direction)
}
private fun generateData(): List<TableItem> {
val data = mutableListOf<TableItem>()
for (i in 0..6) {
for (j in 0..9) {
data.add(TableItem(j, i, "$i$j"))
}
}
return data
}
}
```
5. Activity/Fragment:最后在Activity或Fragment中实例化ViewModel,并设置RecyclerView的滑动监听器,在滑动时根据滑动方向调用ViewModel的接口设置Adapter的锁定状态。
```
class MainActivity : AppCompatActivity() {
private lateinit var viewModel: TableViewModel
override fun onCreate(savedInstanceState: Bundle?) {
super.onCreate(savedInstanceState)
val binding =
DataBindingUtil.setContentView<ActivityMainBinding>(this, R.layout.activity_main)
viewModel = ViewModelProvider(this).get(TableViewModel::class.java)
binding.viewModel = viewModel
binding.tableView.addOnScrollListener(object : RecyclerView.OnScrollListener() {
override fun onScrolled(recyclerView: RecyclerView, dx: Int, dy: Int) {
super.onScrolled(recyclerView, dx, dy)
if (dx != 0 && dy != 0) {
viewModel.setSlideDirection(SlideDirection.BOTH)
} else if (dx != 0) {
viewModel.setSlideDirection(SlideDirection.HORIZONTAL)
} else if (dy != 0) {
viewModel.setSlideDirection(SlideDirection.VERTICAL)
} else {
viewModel.setSlideDirection(SlideDirection.NONE)
}
}
})
}
}
```
这是一个简单的示例,具体实现还需要根据实际需求进行调整和完善。
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