HomeFragment.kt
override fun onCreateView(
inflater: LayoutInflater,
container: ViewGroup?,
savedInstanceState: Bundle?
): View? {
return setupBindings(inflater, container, savedInstanceState)
}
override fun onViewCreated(view: View, savedInstanceState: Bundle?) {
super.onViewCreated(view, savedInstanceState)
searchView.setOnQueryTextListener(object : SearchView.OnQueryTextListener {
override fun onQueryTextSubmit(query: String): Boolean {
//filter the data in step 2
return false
}
override fun onQueryTextChange(query: String): Boolean {
orderHistoryViewModel.search(query)
return false
}
})
}
我已经在Fragment中编写了setOnQueryTextListener。当我运行该应用程序时,它只能运行一次。但是,每当我从搜索栏中清除数据并键入新数据时再次过滤时,如何删除已过滤列表并填充原始列表。
我在viewmodel中编写了搜索功能。以下代码从原始列表中过滤数据并填充过滤后的列表。
ViewModel.kt
fun search(query: String) {
var filteredList =
orderHistoryDetails?.orderList?.value?.filter { x -> x.order.contains(query) }
orderHistoryDetails?.orderList?.value = filteredList
}
您还需要存储原始列表,并检查查询字符串是否为空。
fun search(text: String) {
val filterList: MutableList<OrderItem> = arrayListOf()
if (text.trim().length == 0) {
filterList.clear()
filterList.addAll(listOriginal)
notifyDataSetChanged()
} else {
listOriginal.filter {x->
x.order.toUpperCase.contains(text)
}.apply {
filterList.clear()
filterList.addAll(this)
}
notifyDataSetChanged()
}
}