2月1日 MyGridViewAdapter

MyGridViewAdapter

package com.example.firstapp.gridview;
import android.content.Context;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.BaseAdapter;
import android.widget.ImageView;
import android.widget.TextView;

import com.bumptech.glide.Glide;
import com.example.firstapp.R;

public class MyGridViewAdapter extends BaseAdapter{

    private Context mContext;
    private LayoutInflater mLayoutInflater;
    public MyGridViewAdapter(Context context){
        this.mContext=context;
        mLayoutInflater=LayoutInflater.from(context);

    }

    @Override
    //格子的数量
    public int getCount() {
        return 10;
    }

    @Override
    public Object getItem(int position) {
        return null;
    }

    @Override
    public long getItemId(int position) {
        return 0;
    }

    //重写一个方法用来使用适配器
    static class ViewHolder{
        public ImageView imageView;
        public TextView textView;
    }

    @Override
    //每个格子长什么样子
    public View getView(int position, View convertView, ViewGroup parent) {
        ViewHolder holder = null;
        if (convertView==null){
            convertView=mLayoutInflater.inflate(R.layout.layout_grid_item,null);
            holder=new ViewHolder();
            holder.imageView=convertView.findViewById(R.id.iv_grid);
            holder.textView=convertView.findViewById(R.id.tv_title);
            convertView.setTag(holder);
        }else{
            holder= (ViewHolder) convertView.getTag();
        }
        //赋值
        holder.textView.setText("亚索源计划");
        //插入图片
        Glide.with(mContext).load("https://ss3.bdstatic.com/70cFv8Sh_Q1YnxGkpoWK1HF6hhy/it/u=4254518,1327897741&fm=26&gp=0.jpg").into(holder.imageView);
        return convertView;
    }
}