YJ-POS/HandPos/app/src/main/java/com/yijia/handpos/adapter/OffdutedAdapter.java

package com.yijia.handpos.adapter;

import android.content.Context;
import android.content.Intent;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.BaseAdapter;
import android.widget.ImageView;
import android.widget.LinearLayout;
import android.widget.TextView;
import android.widget.Toast;

import com.yijia.handpos.R;
import com.yijia.handpos.pojo.OffdutedItemBean;
import com.yijia.handpos.ui.work.OffdutyedDetailActivity;
import com.yijia.handpos.util.ConsUtil;

import java.util.List;

public class OffdutedAdapter extends BaseAdapter {
    private LayoutInflater mInflater;
    private Context mContext;
    private List<OffdutedItemBean> offdutedItemBeans;

    public OffdutedAdapter(Context context, List<OffdutedItemBean> mOffdutedItemBeans) {
        mInflater = LayoutInflater.from(context);
        mContext = context;
        offdutedItemBeans = mOffdutedItemBeans;
    }

    @Override
    public int getCount() {
        return offdutedItemBeans.size();
    }

    @Override
    public Object getItem(int position) {
        return offdutedItemBeans.get(position);
    }

    public long getItemId(int position) {
        return position;
    }

    //这个方法才是重点，我们要为它编写一个ViewHolder
    @Override
    public View getView(int position, View convertView, ViewGroup parent) {
        ViewHolder viewHolder = null;
        if (convertView == null) {
            viewHolder = new ViewHolder();
            convertView = LayoutInflater.from(mContext).inflate(R.layout.item_list_offdutyed, null);
            viewHolder.mLinearLayout=convertView.findViewById(R.id.ll_item);
            viewHolder.mClassNoTextView = convertView.findViewById(R.id.classesNo);
            viewHolder.mClassManTextView = convertView.findViewById(R.id.classesMan);
            viewHolder.mEndDateTextView = convertView.findViewById(R.id.endDate);
            viewHolder.mTodetailImageView = convertView.findViewById(R.id.todetail);
            convertView.setTag(viewHolder);
        } else {//else里面说明，convertView已经被复用了，说明convertView中已经设置过tag了，即holder
            viewHolder = (ViewHolder) convertView.getTag();
        }
        viewHolder.mClassNoTextView.setText(offdutedItemBeans.get(position).getClassesNo());
        viewHolder.mClassManTextView.setText(offdutedItemBeans.get(position).getClassMan());
        viewHolder.mEndDateTextView.setText(offdutedItemBeans.get(position).getEndDate());
        viewHolder.mTodetailImageView.setOnClickListener(v -> {
            Intent intent=new Intent(v.getContext(), OffdutyedDetailActivity.class);
            ConsUtil.classStructureNo=offdutedItemBeans.get(position).getClassesNo();
            v.getContext().startActivity(intent);
        });
        viewHolder.mLinearLayout.setOnClickListener(v -> {
            Intent intent=new Intent(v.getContext(), OffdutyedDetailActivity.class);
            ConsUtil.classStructureNo=offdutedItemBeans.get(position).getClassesNo();
            v.getContext().startActivity(intent);
        });
        return convertView;
    }

    //这个ViewHolder只能服务于当前这个特定的adapter，因为ViewHolder里会指定item的控件，不同的ListView，
    // item可能不同，所以ViewHolder写成一个私有的类
    private class ViewHolder {
        LinearLayout mLinearLayout;
        TextView mClassNoTextView;
        TextView mClassManTextView;
        TextView mEndDateTextView;
        ImageView mTodetailImageView;
    }

}