android listview的多列模版实例代码

android listview多列模版

在listview中，可以做出多列模版的效果，关键还是在listview的模版本，比如如下：

<LinearLayout
  android:id="@+id/relativeLayout1"
  android:layout_height="fill_parent"
  android:layout_width="fill_parent"
  xmlns:android="http://schemas.android.com/apk/res/android"> 

  <TextView
    android:id="@+id/FirstText"
    android:layout_width="0dp"
    android:layout_height="wrap_content"
    android:text="First"
    android:layout_weight="1">
  </TextView> 

  <TextView
    android:id="@+id/SecondText"
    android:layout_width="0dp"
    android:layout_height="wrap_content"
    android:text="Second"
    android:layout_weight="2">
  </TextView> 

  <TextView
    android:id="@+id/ThirdText"
    android:layout_width="0dp"
    android:layout_height="wrap_content"
    android:text="Third"
    android:layout_weight="1">
  </TextView> 

  <TextView
    android:id="@+id/FourthText"
    android:layout_width="0dp"
    android:layout_height="wrap_content"
    android:text="Fourth"
    android:layout_weight="1">
  </TextView>
</LinearLayout>

listviewadapter.java:

public class listviewAdapter extends BaseAdapter
{
  public ArrayList<HashMap<String,String>> list;
  Activity activity; 

  public listviewAdapter(Activity activity, ArrayList<HashMap<String,String>> list) {
    super();
    this.activity = activity;
    this.list = list;
  } 

  public int getCount() {
    // TODO Auto-generated method stub
    return list.size();
  } 

  public Object getItem(int position) {
    // TODO Auto-generated method stub
    return list.get(position);
  } 

  public long getItemId(int position) {
    // TODO Auto-generated method stub
    return 0;
  } 

  private class ViewHolder {
      TextView txtFirst;
      TextView txtSecond;
      TextView txtThird;
      TextView txtFourth;
   } 

  public View getView(int position, View convertView, ViewGroup parent) {
    // TODO Auto-generated method stub 

    // TODO Auto-generated method stub
        ViewHolder holder;
        LayoutInflater inflater = activity.getLayoutInflater(); 

        if (convertView == null)
        {
          convertView = inflater.inflate(R.layout.listview_row, null);
          holder = new ViewHolder();
          holder.txtFirst = (TextView) convertView.findViewById(R.id.FirstText);
          holder.txtSecond = (TextView) convertView.findViewById(R.id.SecondText);
          holder.txtThird = (TextView) convertView.findViewById(R.id.ThirdText);
          holder.txtFourth = (TextView) convertView.findViewById(R.id.FourthText);
          convertView.setTag(holder);
        }
        else
        {
          holder = (ViewHolder) convertView.getTag();
        } 

        HashMap<String, String> map = list.get(position);
        holder.txtFirst.setText(map.get(FIRST_COLUMN));
        holder.txtSecond.setText(map.get(SECOND_COLUMN));
        holder.txtThird.setText(map.get(THIRD_COLUMN));
        holder.txtFourth.setText(map.get(FOURTH_COLUMN)); 

      return convertView;
  }

主程序：

public class MultiColumnActivity extends Activity
{
  private ArrayList<HashMap<String,String>> list; 

  public void onCreate(Bundle savedInstanceState)
  {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.main); 

    ListView lview = (ListView) findViewById(R.id.listview);
    populateList();
    listviewAdapter adapter = new listviewAdapter(this, list);
    lview.setAdapter(adapter);
  }   

  private void populateList() { 

    list = new ArrayList<HashMap<String,String>>(); 

    HashMap<String,String> temp = new HashMap<String,String>();
      temp.put(FIRST_COLUMN,"Colored Notebooks");
      temp.put(SECOND_COLUMN, "By NavNeet");
      temp.put(THIRD_COLUMN, "Rs. 200");
      temp.put(FOURTH_COLUMN, "Per Unit");
    list.add(temp); 

    HashMap<String,String> temp1 = new HashMap<String,String>();
      temp1.put(FIRST_COLUMN,"Diaries");
      temp1.put(SECOND_COLUMN, "By Amee Products");
      temp1.put(THIRD_COLUMN, "Rs. 400");
      temp1.put(FOURTH_COLUMN, "Per Unit");
    list.add(temp1); 

    HashMap<String,String> temp2 = new HashMap<String,String>();
      temp2.put(FIRST_COLUMN,"Note Books and Stationery");
      temp2.put(SECOND_COLUMN, "By National Products");
      temp2.put(THIRD_COLUMN, "Rs. 600");
      temp2.put(FOURTH_COLUMN, "Per Unit");
    list.add(temp2); 

    HashMap<String,String> temp3 = new HashMap<String,String>();
      temp3.put(FIRST_COLUMN,"Corporate Diaries");
      temp3.put(SECOND_COLUMN, "By Devarsh Prakashan");
      temp3.put(THIRD_COLUMN, "Rs. 800");
      temp3.put(FOURTH_COLUMN, "Per Unit");
    list.add(temp3); 

    HashMap<String,String> temp4 = new HashMap<String,String>();
      temp4.put(FIRST_COLUMN,"Writing Pad");
      temp4.put(SECOND_COLUMN, "By TechnoTalaktive Pvt. Ltd.");
      temp4.put(THIRD_COLUMN, "Rs. 100");
      temp4.put(FOURTH_COLUMN, "Per Unit");
    list.add(temp4);
  }
}

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