package com.example.listviewdemo;

import android.annotation.TargetApi;
import android.os.Build;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.util.Log;
import android.view.View;
import android.widget.AdapterView;
import android.widget.ArrayAdapter;
import android.widget.ListView;
import android.widget.SimpleAdapter;
import android.widget.Toast;

import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;

@TargetApi(Build.VERSION_CODES.M)
public class MainActivity extends AppCompatActivity implements AdapterView.OnItemClickListener,View.OnScrollChangeListener{
? ?private ListView listView;
? ?private ArrayAdapter<String> arr_adapter;
? ?public SimpleAdapter sim_adapter;
? ?private List<Map<String,Object>>datalist;

? ?@TargetApi(Build.VERSION_CODES.M)
? ?@Override
? ?protected void onCreate(Bundle savedInstanceState) {
? ? ? ?super.onCreate(savedInstanceState);
? ? ? ?setContentView(R.layout.activity_main);
? ? ? ?listView= (ListView) findViewById(R.id.listView);
? ? ? ?String[]arr_data={"慕課網1","慕課網2","慕課網3","慕課網4"};
? ? ? ?datalist=new ArrayList<Map<String,Object>>();
? ? ? ?arr_adapter=new ArrayAdapter<String>(this,android.R.layout.simple_list_item_1,arr_data);
? ? ? ?sim_adapter=new SimpleAdapter(this,getDatalist(),R.layout.item,new String[]{"pic","text"},new int[]{R.id.pic,R.id.text});
? ? ? ?// ? ? ?listView.setAdapter(arr_adapter);
? ? ? ? listView.setAdapter(sim_adapter);
? ? ? listView.setOnClickListener((View.OnClickListener) this);
? ? ? ?listView.setOnScrollChangeListener(this);
? ?}
? ?private List<Map<String,Object>> getDatalist(){
? ? ? ?for(int i=0;i<20;i++){
? ? ? ? ? ?Map<String,Object> map=new HashMap<String,Object>();
? ? ? ? ? ? ? ?map.put("pic",R.drawable.ic_launcher);
? ? ? ? ? ? ? ?map.put("text","慕課網"+i);
? ? ? ? ? ? ? ?datalist.add(map);
? ? ? ?}

? ? ? ?return datalist;
? ?}

? ?@Override
? ?public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
? ? ? ?String str= listView.getItemAtPosition(position) +"";
? ? ? ?Toast.makeText(MainActivity.this,"position="+position+" text="+str,Toast.LENGTH_SHORT).show();
? ? ? ?Log.i("toast",String.valueOf(position));
? ?}

? ?@Override
? ?public void onScrollChange(View v, int scrollX, int scrollY, int oldScrollX, int oldScrollY) {



? ?}
}