按textview的长度排序回收站视图

Question

I am looking for solution for below problem.

I have recycler view which contains couple of textviews, I need to sort it by the length of one of the textviews. The shortest length should be first. I was trying to find some similar problems but I could not find any.

Does anyone have some optimal way to do it?

Answer 1

You will sort your List by using Comparator . Below is the way.

adapter.setList(Collections.sort(adapter.getList(), new LengthComparator()););
adapter.notifyDataSetChanged();

LengthComparator.java

public class LengthComparator implements Comparator<String> {
    @Override
    public int compare(String s1, String s2) {
        return s1.length() - s2.length();
    }
}

Answer 2

for anyone who is looking for answer in Kotlin your List should be used in bind of Your ViewHolder(Also in Java)

 inner class ViewHolder(var binding: ViewDataBinding) : RecyclerView.ViewHolder(binding.root)
    {

        fun bind(step : Steps, handler: ItemClickHandler)
        {
            list?.sortedBy { steps -> itemView.title.length() }
            binding.setVariable(BR.steps,step)
            binding.executePendingBindings()

        }
    }

its Worked For me