CODEWITHSUNDEEP
androidkotlinandroid-layoutandroid-recyclerview
Debayan Ghosh Dastider
Debayan Ghosh Dastider

Reputation: 21

How can I access checkbox view in a RecyclerView Adapter class from a layout file?

class TodoAdapter (var todos:List<Todo>) : RecyclerView.Adapter<TodoAdapter.TodoViewHolder>() {

inner class TodoViewHolder(itemView: View) : RecyclerView.ViewHolder(itemView)

override fun onCreateViewHolder(parent: ViewGroup, viewType: Int): TodoViewHolder {

    val view = LayoutInflater.from(parent.context).inflate(R.layout.todo_layout, parent, false)
    return TodoViewHolder(view)

}

override fun onBindViewHolder(holder: TodoViewHolder, position: Int) {

    holder.itemView.apply {
    }

}

override fun getItemCount(): Int {
    return todos.size
}

}

Here is the adapter class.

Link to layout xml file for adapter class

What I want is to access the checkbox and textview from xml file inside

holder.itemView.apply{
tvTask.text = todos[position].title
cbTask.isChecked = todos[position].isChecked
}

title and isChecked are variables declared in a data class of string and boolean type respectively

My inner class contains itemViews since I am trying to make a To-Do app. So it returns items to the constructor.

Upvotes: 0

Views: 245

Answers (1)

Nataraj KR
Nataraj KR

Reputation: 1102

To enable ViewBinding, add the following piece of code to the app-level build.gradle file.

android {
    ...
    buildFeatures {
        viewBinding true
    }
}

XML file is wrapped with layout tag and that seems to be fine.

And now refactor the ViewHolder class's constructor to take a binding variable.

inner class TodoViewHolder(val binding: TodoLayoutBinding) : RecyclerView.ViewHolder(binding.root)

note: inner modifier is optional here.

The binding variable can be accessed in the onBindViewHolder method's holder variable.

override fun onBindViewHolder(holder: TodoViewHolder, position: Int) {

    holder.binding.apply {
    // ...access the views here...
    }

}

Upvotes: 1

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