(5)列表框和编辑框

第5次课列表框和编辑框
MainActivity.class
package com.example.test;
import android.support.v7.app.ActionBarActivity;
import android.database.Cursor;
import android.os.Bundle;
import android.provider.ContactsContract;
import android.util.Log;
import android.view.View;
import android.widget.AdapterView;
import android.widget.ListAdapter;
import android.widget.ListView;
import android.widget.SimpleCursorAdapter;
import android.widget.Toast;
public class MainActivity extends ActionBarActivity {
ListView m_ListView;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(yout.activity_main);
m_ListView=(ListView)findViewById(R.id.listView1);
Cursor cur =
getContentResolver().query( monDataKinds.Phone.CONTENT_ URI, null, null, null, null);
startManagingCursor(cur); //把cursor的生命周期交给activity管理
// ListAdapter是ListView和后台数据的桥梁
try{
ListAdapter adapter = new SimpleCursorAdapter(this,
// 定义List中每一行的显示模板
// 表示每一行包含两个数据项
yout.listview,
// 数据库的Cursor对象
cur,
// 从数据库的NAME和NUMBER两列中取数据
new String[]
{monDataKinds.Phone.DISPLAY_NAME,mo nDataKinds.Phone.NUMBER },
// 与NAME和NUMBER对应的Views
new int[] { R.id.textView1,R.id.textView2});
m_ListView.setAdapter(adapter);
}catch(Exception ee)
{
Log.v("ttt", ee.getMessage());
}
/* 将adapter添加到m_ListView中 */
/* 为m_ListView视图添加setOnItemSelectedListener监听 */
m_ListView.setOnItemSelectedListener(new
AdapterView.OnItemSelectedListener() {
@Override
public void onNothingSelected(AdapterView<?> arg0)
{
//没有选中
}
@Override
public void onItemSelected(AdapterView<?> parent, View view,
int position, long id) {
DisplayToast("滚动到第
"+Long.toString(parent.getSelectedItemId())+"项");
}
});
/* 为m_ListView视图添加setOnItemClickListener监听 */
m_ListView.setOnItemClickListener(new
AdapterView.OnItemClickListener() {
@Override
public void onItemClick(AdapterView<?> arg0, View arg1, int arg2, long arg3)
{
//于对选中的项进行处理
DisplayToast("选中了第"+Integer.toString(arg2+1)+"项");
}
});
}
/* 显示Toast */
public void DisplayToast(String str)
{
Toast.makeText(this, str, Toast.LENGTH_SHORT).show();
}
}
3G手机移动应用开发。