BRVAH+RecycleView 实现列表无限循环滚动 并且item 可点击 kotlin实现代码
时间: 2024-02-01 21:04:08 浏览: 141
实现RecyclerView无限自动循环滚动
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好的,下面是Kotlin实现的BRVAH和RecyclerView实现无限循环滚动和可点击item的代码:
1. 首先在build.gradle中添加BRVAH依赖:
```
implementation 'com.github.CymChad:BaseRecyclerViewAdapterHelper:3.0.4'
```
2. 在布局文件中添加RecyclerView:
```
<androidx.recyclerview.widget.RecyclerView
android:id="@+id/recyclerView"
android:layout_width="match_parent"
android:layout_height="match_parent" />
```
3. 在Activity或Fragment中初始化RecyclerView:
```
val recyclerView = findViewById<RecyclerView>(R.id.recyclerView)
val layoutManager = LinearLayoutManager(this)
layoutManager.orientation = LinearLayoutManager.HORIZONTAL // 设置为横向滚动
recyclerView.layoutManager = layoutManager
```
4. 创建Adapter并继承BaseQuickAdapter:
```
class MyAdapter(data: List<String>?) : BaseQuickAdapter<String, BaseViewHolder>(R.layout.item_layout, data) {
override fun convert(holder: BaseViewHolder, item: String) {
// 设置item的显示内容
holder.setText(R.id.tvItemName, item)
}
}
```
5. 创建数据源并初始化Adapter:
```
val dataList = listOf("item1", "item2", "item3", "item4", "item5")
val myAdapter = MyAdapter(dataList)
recyclerView.adapter = myAdapter
```
6. 实现无限循环滚动:
```
recyclerView.post {
val layoutManager = recyclerView.layoutManager as LinearLayoutManager
val firstItem = layoutManager.findFirstVisibleItemPosition()
val lastItem = layoutManager.findLastVisibleItemPosition()
val itemCount = layoutManager.itemCount
// 如果当前第一个可见item是第0个item,则将RecyclerView滚动到最后一个item的位置
if (firstItem == 0) {
recyclerView.scrollToPosition(itemCount - 1)
}
// 如果当前最后一个可见item是最后一个item,则将RecyclerView滚动到第一个item的位置
else if (lastItem == itemCount - 1) {
recyclerView.scrollToPosition(0)
}
}
```
7. 实现可点击item:
```
myAdapter.setOnItemClickListener { adapter, view, position ->
// 处理item的点击事件
}
```
以上就是BRVAH和RecyclerView实现无限循环滚动和可点击item的Kotlin代码。
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