内容是阵列的listview

public class ex05 extends Activity implements OnItemClickListener {
public static final int RELOAD_ID = Menu.FIRST;
public static final int EXIT_ID = Menu.FIRST + 1;
ListView lv; ArrayAdapter<String> adapter; DataModel dm;
@Override public void onCreate(Bundle icicle) {
super.onCreate(icicle);
dm = new DataModel();
lv = new ListView(this);
adapter = new ArrayAdapter<String>
(this, android.R.layout.simple_list_item_1, dm.loadData());
lv.setAdapter(adapter);
lv.setOnItemClickListener(this);
setContentView(lv);
}
public void onItemClick(AdapterView<?> arg0, View arg1, int arg2, long arg3) {
setTitle("choice: " + String.valueOf(dm.getPrice(arg2))); }
@Override public boolean onCreateOptionsMenu(Menu menu) {
super.onCreateOptionsMenu(menu);
menu.add(0, RELOAD_ID, 0, "Reload");
MenuItem im = menu.findItem(RELOAD_ID);
im.setIcon(R.drawable.reload_im);
menu.add(0, EXIT_ID, 1, "Exit");
im = menu.findItem(EXIT_ID);
im.setIcon(R.drawable.exit_im);
return true; }
@Override public boolean onOptionsItemSelected(MenuItem item) {
switch (item.getItemId()) {
case RELOAD_ID:
adapter = new ArrayAdapter<String>
(this, android.R.layout.simple_list_item_1, dm.loadData());
lv.setAdapter(adapter);
break;
case EXIT_ID:
finish();
break; }
return super.onOptionsItemSelected(item);
}}
//----- DataModel.java 程式碼-----------------------
package com.misoo.ex05;
public class DataModel {
private String[] data, xdata;
private double[] price;
private boolean k = true;
public DataModel() {
data = new String[3];
data[0] = "Item-1"; data[1] = "Item-2"; data[2] = "Item-3";
xdata = new String[3];
xdata[0] = "Prod-x"; xdata[1] = "Prod-y"; xdata[2] = "Prod-z";
price = new double[3];
price[0] = 305.5; price[1] = 56.75; price[2] = 100.25;
}
public String[] loadData() {
k = !k;
if(k) return xdata;
else return data; }
public double getPrice(int i) { return price[i]; }
}[/size]