[英]RecyclerView item click and open another recyclerview
enter image description hereI have almost 250 patent item which i want to show in a parent recyclerview.在此处输入图像描述我有近 250 项专利项目,我想在父回收站视图中显示这些项目。 After item click of parent recyclerview it will show over hundreds of data under each parent item in another recycler view.
在父回收者视图的项目单击后,它将在另一个回收者视图中的每个父项下显示数百个数据。 How can i do it like this picture.
我怎么能像这张照片那样做。
I would do it this way.我会这样做。 Create an interface:
创建接口:
interface AdapterContract{
fun onListItemClick(id: String) //whatever the parameter is
}
When you instantiate the Adapter in your Fragment1
, you can implement this interface:当您在
Fragment1
实例化 Adapter 时,您可以实现此接口:
class Fragment1 : Fragment(), AdapterContract{
...
//when instantiating the adapter:
private val adapter: MyAdapter by lazy{
MyAdapter(this //for the interface)
}
//override the method of Adapter contract
}
Your adapters constructor should look like this: MyAdapter(adapterContract: AdapterContract) : ListAdapter<MyAdapter.MyViewHolder>(Diff_Util_SOME_OBJECT)
您的适配器构造函数应如下所示:
MyAdapter(adapterContract: AdapterContract) : ListAdapter<MyAdapter.MyViewHolder>(Diff_Util_SOME_OBJECT)
Than in the adapters ViewHolder:比在适配器 ViewHolder 中:
itemHolder?.setOnClickListener{
adapterContract.onListItemClick(someId)
}
Now in your override method in Fragment1
:现在在
Fragment1
的覆盖方法中:
override method onListItemClick(id: String){
//pass this id to the next opening fragment (like Bundles or navargs)
//init `Fragment2` which is going to have all items, that belong to `Fragment1` selected item
}
Load the data :)加载数据:)
I hope you are using a database or something.我希望您使用的是数据库或其他东西。 Should work with hard coded data structures as well, but just to be safe :).
也应该使用硬编码的数据结构,但只是为了安全:)。
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