RecyclerView 万能适配器

配合RecyclerView使用的适配器
导入依赖

项目的gradle
allprojects {
repositories {
……
maven { url “https://jitpack.io” }
}
}

模块的gradle
implementation ‘com.alibaba:fastjson:1.2.55’

基本使用
FoodQuikAdapter类
mport android.widget.ImageView;

import androidx.annotation.Nullable;

import com.bumptech.glide.Glide;
import com.chad.library.adapter.base.BaseQuickAdapter;
import com.chad.library.adapter.base.BaseViewHolder;

import java.util.List;

/***

• 第一个泛型 ：数据源Bean类

• 第二个泛型 ：BaseViewHolder
  */
  public class FoodQuikAdapter extends BaseQuickAdapter {

  /***
  *

  • @param layoutResId 行布局的资源ID
  • @param data 数据源
    */
    public FoodQuikAdapter(int layoutResId, @Nullable List data) {
    super(layoutResId, data);
    }

  /***
  *

  • @param helper holder
  • @param item 每一行的数据
    */
    @Override
    protected void convert(BaseViewHolder helper, FoodBean.DataBean item) {
    helper.setText(R.id.tv_food, item.getTitle());
    Glide.with(mContext).load(item.getPic()).into((ImageView) helper.getView(R.id.iv_food));
    }
    }

MainActivity类
import android.os.Bundle;

import androidx.appcompat.app.AppCompatActivity;
import androidx.recyclerview.widget.LinearLayoutManager;
import androidx.recyclerview.widget.RecyclerView;

import com.alibaba.fastjson.JSON;
import com.lzy.okgo.OkGo;
import com.lzy.okgo.callback.StringCallback;
import com.lzy.okgo.model.Response;

import java.util.ArrayList;
import java.util.List;

public class MainActivity extends AppCompatActivity {

private RecyclerView rv_food;
private FoodQuikAdapter foodQuikAdapter;
private List list;

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);
    initView();
    getData("http://www.qubaobei.com/ios/cf/dish_list.php?stage_id=1&limit=20&page=1");
}

private void initView() {
    rv_food = findViewById(R.id.rv_food);

    list = new ArrayList<>();
    foodQuikAdapter = new FoodQuikAdapter(R.layout.food_item_layout, list);
    rv_food.setAdapter(foodQuikAdapter);
    rv_food.setLayoutManager(new GridLayoutManager(MainActivity.this,2));

}

private void getData(String url) {
    OkGo.get(url).execute(new StringCallback() {
        @Override
        public void onSuccess(Response response) {
            FoodBean foodBean = JSON.parseObject(response.body(), FoodBean.class);
            list.addAll(foodBean.getData());
            foodQuikAdapter.notifyDataSetChanged();
        }
    });
}

}

点击事件
private void listener() {
//点击事件
foodQuikAdapter.setOnItemClickListener(new BaseQuickAdapter.OnItemClickListener() {
@Override
public void onItemClick(BaseQuickAdapter adapter, View view, int position) {
Toast.makeText(MainActivity.this, list.get(position).getTitle(), Toast.LENGTH_SHORT).show();
}
});

    //长点击事件
    foodQuikAdapter.setOnItemLongClickListener(new BaseQuickAdapter.OnItemLongClickListener() {
        @Override
        public boolean onItemLongClick(BaseQuickAdapter adapter, View view, int position) {
            list.remove(position);
            foodQuikAdapter.notifyDataSetChanged();
            return true;
        }
    });
}

子控件的点击事件
//适配器
/***
*
* @param helper holder
* @param item 每一行的数据
*/
@Override
protected void convert(BaseViewHolder helper, FoodBean.DataBean item) {
helper.setText(R.id.tv_food, item.getTitle())
//给指定控件添加点击事件
.addOnClickListener(R.id.tv_food)
.addOnClickListener(R.id.iv_food);
Glide.with(mContext).load(item.getPic()).into((ImageView) helper.getView(R.id.iv_food));
}

//Activity
   //子控件的点击事件
    foodQuikAdapter.setOnItemChildClickListener(new BaseQuickAdapter.OnItemChildClickListener() {
        @Override
        public void onItemChildClick(BaseQuickAdapter adapter, View view, int position) {
            switch (view.getId()) {
                case R.id.tv_food:
                    Toast.makeText(MainActivity.this, "TextView的点击事件 -->" + list.get(position).getTitle(), Toast.LENGTH_SHORT).show();
                    break;
                case R.id.iv_food:
                    Toast.makeText(MainActivity.this, "ImageView的点击事件 -->" + list.get(position).getTitle(), Toast.LENGTH_SHORT).show();
                    break;
            }
        }
    });

多布局
FoodQuickAdapter类
public FoodQuikAdapter(@Nullable List data) {
super(data);
//设置布局类型
setMultiTypeDelegate(new MultiTypeDelegate() {
@Override
protected int getItemType(FoodBean.DataBean dataBean) {
return Integer.parseInt(dataBean.getId()) % 2;
}
});

    getMultiTypeDelegate()
            .registerItemType(0, R.layout.food_item_layout_left)
            .registerItemType(1, R.layout.food_item_layout_right);
}

/***
 *
 * @param helper holder
 * @param item 每一行的数据
 */
@Override
protected void convert(BaseViewHolder helper, FoodBean.DataBean item) {
    switch (helper.getItemViewType()) {
        case 0:
            helper.setText(R.id.tv_food_left, item.getTitle())
                    //给指定控件添加点击事件
                    .addOnClickListener(R.id.tv_food_left)
                    .addOnClickListener(R.id.iv_food_left);
            Glide.with(mContext).load(item.getPic()).into((ImageView) helper.getView(R.id.iv_food_left));
            break;
        case 1:
            helper.setText(R.id.tv_food_right, item.getTitle())
                    //给指定控件添加点击事件
                    .addOnClickListener(R.id.tv_food_right)
                    .addOnClickListener(R.id.iv_food_right);
            Glide.with(mContext).load(item.getPic()).into((ImageView) helper.getView(R.id.iv_food_right));
            break;
    }

}