Android 自定义BaseAdapter
16lz
2021-01-23
不要对俺的贴图做评价
看一下代码实现
package com.android.wei.zidingyib;import android.app.Activity;import android.app.AlertDialog;import android.os.Bundle;import android.view.View;import android.view.View.OnClickListener;import android.widget.ImageButton;import android.widget.ListView;import java.util.*;public class MyActivity extends Activity { private ListView listView; private ImageButton imageButton; private ListViewAdapter listViewAdapter; private List<Map<String,Object>> listItems; private Integer[] imgeIDs = { R.drawable.niao,R.drawable.niao,R.drawable.rui,R.drawable.rui, R.drawable.ning,R.drawable.ning }; private String[] goodsNames={ "土豆丝","土豆块","土豆泥","红烧土豆", "麻辣土豆","清蒸土豆" }; private String[] goodsDetails={ "土豆丝：便宜又好吃","土豆丝：便宜又好吃","土豆丝：便宜又好吃", "土豆丝：便宜又好吃","土豆丝：便宜又好吃","土豆丝：便宜又好吃", }; private int[] money={ 2,3,3,10,8,13 }; public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.main); listView=(ListView) this.findViewById(R.id.listview); imageButton = (ImageButton) this.findViewById(R.id.imagebutton); imageButton.setOnClickListener(new ClickEvent()); listItems = getListItems(); listViewAdapter = new ListViewAdapter(this,listItems); listView.setAdapter(listViewAdapter); } private List<Map<String,Object>> getListItems(){ List<Map<String,Object>> listItems = new ArrayList<Map<String,Object>>(); for(int i=0;i<goodsNames.length;i++){ Map<String,Object> map = new HashMap<String,Object>(); map.put("image", imgeIDs[i]); map.put("title", goodsNames[i]); map.put("info", money[i]+"元"); map.put("detail", goodsDetails[i]); listItems.add(map); } return listItems; } class ClickEvent implements OnClickListener{ public void onClick(View v){ String goodsList=""; int sun=0; for(int i=0;i<listItems.size();i++){ goodsList += listViewAdapter.hasChecked(i)?goodsNames[i]+" ":""; sun +=listViewAdapter.hasChecked(i)?money[i]:0; } new AlertDialog.Builder(MyActivity.this) .setTitle("点菜清单") .setMessage("你好，你选择的菜：\n"+goodsList+"\n"+"总消费额为："+sun+"元") .setPositiveButton("确定",null) .show(); } }} package com.android.wei.zidingyib; import java.util.List;import java.util.Map;import android.app.AlertDialog;import android.content.Context;import android.view.LayoutInflater;import android.view.View;import android.view.ViewGroup;import android.widget.BaseAdapter;import android.widget.Button;import android.widget.CheckBox;import android.widget.CompoundButton;import android.widget.ImageView;import android.widget.TextView;public class ListViewAdapter extends BaseAdapter{ private Context context; private List<Map<String,Object>> listItems; private LayoutInflater listContainer; private boolean[] hasChecked; public final class ListItemView{ public ImageView image; public TextView title; public TextView info; public CheckBox check; public Button detail; } public ListViewAdapter(Context context,List<Map<String,Object>> listItems){ this.context = context; listContainer = LayoutInflater.from(context); this.listItems = listItems; hasChecked = new boolean[getCount()]; }@Overridepublic int getCount() {// TODO Auto-generated method stubreturn listItems.size();}@Overridepublic Object getItem(int position) {// TODO Auto-generated method stubreturn null;}@Overridepublic long getItemId(int position) {// TODO Auto-generated method stubreturn 0;}private void checkedChange(int checkedID){hasChecked[checkedID] = !hasChecked[checkedID];}public boolean hasChecked(int checkedID){return hasChecked[checkedID];}private void showDetailInfo(int clickID){new AlertDialog.Builder(context) .setTitle("本菜详情:"+listItems.get(clickID).get("title")) .setMessage(listItems.get(clickID).get("detail").toString()) .setPositiveButton("确定",null) .show();}@Overridepublic View getView(int position, View convertView, ViewGroup parent) {final int selectID= position;ListItemView listItemView = null;if(convertView ==null){listItemView = new ListItemView();convertView = listContainer.inflate(R.layout.list_item, null);//获得控件对象listItemView.image =(ImageView) convertView.findViewById(R.id.imageitem);listItemView.title =(TextView) convertView.findViewById(R.id.textview);listItemView.info =(TextView) convertView.findViewById(R.id.textview1);listItemView.detail=(Button) convertView.findViewById(R.id.button);listItemView.check = (CheckBox) convertView.findViewById(R.id.checkItem); //设置空间集到convertViewconvertView.setTag(listItemView);}else{listItemView = (ListItemView) convertView.getTag();}//设置文字图片listItemView.image.setBackgroundResource((Integer)listItems.get(position).get("image"));listItemView.title.setText((String)listItems.get(position).get("title"));listItemView.info.setText((String) listItems.get(position).get("info"));listItemView.detail.setText("本菜介绍");listItemView.detail.setOnClickListener(new View.OnClickListener() {@Overridepublic void onClick(View v) {// TODO Auto-generated method stubshowDetailInfo(selectID);}});listItemView.check.setOnCheckedChangeListener(new CheckBox.OnCheckedChangeListener(){public void onCheckedChanged(CompoundButton buttonView,boolean isChecked){checkedChange(selectID);}});return convertView;}}