android listview adater

package com.demo.demo;import android.content.Context;import android.content.DialogInterface;import android.support.v7.app.AppCompatActivity;import android.os.Bundle;import android.util.Log;import android.view.LayoutInflater;import android.view.Menu;import android.view.MenuItem;import android.view.View;import android.view.ViewGroup;import android.widget.Adapter;import android.widget.AdapterView;import android.widget.ArrayAdapter;import android.widget.BaseAdapter;import android.widget.Button;import android.widget.ListView;import android.widget.SimpleAdapter;import android.widget.TextView;import android.widget.Toast;import java.util.ArrayList;import java.util.HashMap;import java.util.Objects;public class MainActivity extends AppCompatActivity {    private Button btn,btn3;    private TextView tx,tx3;    private ListView lv,lv2,lv3;    @Override    protected void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        setContentView(R.layout.test);        String[] str=new String[]{"one","two","three"};        init();        // arrayAdater 使用  // lv.setAdapter(new ArrayAdapter<String>(this,android.R.layout.simple_list_item_1,str));  // lv.setAdapter(new ArrayAdapter<String>(this, // android.R.layout.simple_list_item_checked, str)); // lv.setChoiceMode(ListView.CHOICE_MODE_MULTIPLE); // // lv.setOnItemClickListener(new AdapterView.OnItemClickListener() { // @Override // public void onItemClick(AdapterView<?> parent, View view, int position, long id) { // Toast.makeText(MainActivity.this, "cd", Toast.LENGTH_LONG).show(); // } // });   // SimpleAdapter 使用 // ArrayList<HashMap<String,Object>> list = new ArrayList<HashMap<String, Object>>(); // // for(int i =0; i <10; i++){ // HashMap<String,Object> hashMap =new HashMap<String, Object>(); // // hashMap.put("Image",R.drawable.cc); // hashMap.put("text","niahoaa "+i); // list.add(hashMap); // } // SimpleAdapter simpleAdapter =new SimpleAdapter(this,list,R.layout.item,new String[]{"Image","text"},new int[]{R.id.img,R.id.tv}); // // lv2.setAdapter(simpleAdapter);    // BaseAdater 使用  MyAdater myAdater = new MyAdater(this);        lv3.setAdapter(myAdater);    }    private ArrayList<HashMap<String, Object>> getDate(){        ArrayList<HashMap<String, Object>> listItem = new ArrayList<HashMap<String,     Object>>();        for(int i=0;i<10;i++)        {            HashMap<String, Object> map = new HashMap<String, Object>();            map.put("ItemTitle", "第"+i+"行");            listItem.add(map);        }        return listItem;    }    public void init(){        lv=(ListView)findViewById(R.id.listview);        lv2=(ListView)findViewById(R.id.ll);        lv3=(ListView)findViewById(R.id.lv3);    }    private class MyAdater extends BaseAdapter{        private LayoutInflater layoutInflater;        public MyAdater(Context context){            this.layoutInflater=LayoutInflater.from(context);        }        @Override        public int getCount() {            return getDate().size();        }        @Override        public int getItemViewType(int position) {            return super.getItemViewType(position);        }        @Override        public View getView(final int position, View convertView, ViewGroup parent) {            ViewHolder viewHolder;            if(convertView==null){                viewHolder =new ViewHolder();                convertView =layoutInflater.inflate(R.layout.item3,null);                viewHolder.title=(TextView)convertView.findViewById(R.id.tv3);                viewHolder.bt=(Button)convertView.findViewById(R.id.btn3);                convertView.setTag(viewHolder);            }else {                viewHolder = (ViewHolder) convertView.getTag();                viewHolder.title.setText(getDate().get(position).get("ItemTitle").toString());                viewHolder.bt.setOnClickListener(new View.OnClickListener() {                    @Override                    public void onClick(View v) {                        Toast.makeText(MainActivity.this,"cdcdcdc",Toast.LENGTH_LONG).show();                        Log.v("Click","ni dian ji " + position);                        //Log.v("MyListViewBase", "你点击了按钮" + position);  }                });            }            return convertView;        }        @Override        public Object getItem(int position) {            return null;        }        @Override        public View getDropDownView(int position, View convertView, ViewGroup parent) {            return super.getDropDownView(position, convertView, parent);        }        @Override        public long getItemId(int position) {            return 0;        }        @Override        public int getViewTypeCount() {            return super.getViewTypeCount();        }    }    public final class ViewHolder{        public TextView title;        public Button   bt;    }}
更多相关文章

随机推荐
