隔行换色的Android ListView：使用BaseAdapter

package com.xsjayz.listview0822;    import android.app.Activity;  import android.content.Context;  import android.os.Bundle;  import android.view.LayoutInflater;  import android.view.View;  import android.view.ViewGroup;  import android.widget.AdapterView;  import android.widget.AdapterView.OnItemClickListener;  import android.widget.BaseAdapter;  import android.widget.ImageView;  import android.widget.ListView;  import android.widget.TextView;  import android.widget.Toast;    public class ListViewActivity extends Activity {     private String[] moreNames = null;   private ListView listView = null;     @Override   public void onCreate(Bundle savedInstanceState) {    super.onCreate(savedInstanceState);    setContentView(R.layout.main);      // 在string中定义的字符串数组    moreNames = getResources().getStringArray(R.array.list_array);    // 在main.xml中定义的listview    listView = (ListView) findViewById(R.id.listViewMoreInfo);      // 隐藏ListView的分隔线    listView.setDivider(null);    listView.setAdapter(baseAdapter);      listView.setOnItemClickListener(new OnItemClickListener() {     @Override     public void onItemClick(AdapterView<?> view, View arg1,       int position, long id) {        switch (position) {      case 0:       toastUtil(ListViewActivity.this, position);       break;      case 1:       toastUtil(ListViewActivity.this, position);       break;      case 2:       toastUtil(ListViewActivity.this, position);       break;      case 3:       toastUtil(ListViewActivity.this, position);       break;      case 4:       toastUtil(ListViewActivity.this, position);       break;      case 5:       toastUtil(ListViewActivity.this, position);       break;      case 6:       toastUtil(ListViewActivity.this, position);       break;      }     }    });   }     /**    * 由于使用了大量的Toast，所以这里将这些Toast封装成一个方法    *     * @param context    * @param position    */   public void toastUtil(Context context, int position) {    Toast.makeText(context, moreNames[position], 3000).show();   }     /**    * 自定义BaseAdapter，返回隔行换色的视图显示在ListView上。    */   BaseAdapter baseAdapter = new BaseAdapter() {    @Override    public View getView(int position, View convertView, ViewGroup parent) {       ImageView imageView = null;     TextView textView = null;     // 获得布局文件more_info_my.xml，里面定义了TextView和ImageView两个组件     convertView = LayoutInflater.from(ListViewActivity.this).inflate(       R.layout.more_info_my, null);       textView = (TextView) convertView.findViewById(R.id.mytxt);     imageView = (ImageView) convertView.findViewById(R.id.myimage);     // 设置ListView显示的文字内容和图片     textView.setText(moreNames[position]);     imageView.setImageResource(R.drawable.moreinfo_extend_next);     // 为ListView设置隔行不同的背景颜色     if (position % 2 == 0) {      convertView.setBackgroundDrawable(getResources().getDrawable(        R.drawable.list_item_2));     } else {      convertView.setBackgroundDrawable(getResources().getDrawable(        R.drawable.list_item_1));     }     // 返回的convertView对象将作为ListView的列表项     return convertView;    }      @Override    public long getItemId(int position) {     return 0;    }      @Override    public Object getItem(int position) {     return null;    }      @Override    public int getCount() {     return moreNames.length;    }   };  }