ArrayAdapter的使用

Posted 2020-07-06 zqxLonely

package com.pingyijinren.test;

import android.content.Context;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.ArrayAdapter;
import android.widget.TextView;

import java.util.List;

/**
 * Created by Administrator on 2016/5/17 0017.
 */
public class ListViewArrayAdapter extends ArrayAdapter<String> {
    private int resourceId;

    public ListViewArrayAdapter(Context context, int textViewResourceId,List<String> objects){
        super(context,textViewResourceId,objects);
        resourceId=textViewResourceId;
    }

    @Override
    public View getView(int position, View convertView, ViewGroup parent){
        String string=getItem(position);
        View view;
        ViewHolder viewHolder;
        if(convertView==null){
            view= LayoutInflater.from(getContext()).inflate(resourceId,null);
            viewHolder=new ViewHolder();
            viewHolder.textView=(TextView)view.findViewById(R.id.textView);
            view.setTag(viewHolder);
        }
        else{
            view=convertView;
            viewHolder=(ViewHolder)view.getTag();
        }
        viewHolder.textView.setText(string);
        return view;
    }

    private class ViewHolder{
        TextView textView;
    }
}