SQLiteDatabase db;Cursor cur;

SimpleCursorAdapter adapter;

// 打开或创建数据库db = openOrCreateDatabase(DB_NAME,  Context.MODE_PRIVATE, null);

// 创建数据表String createTable="CREATE TABLE IF NOT EXISTS " + TB_NAME +"(_id INTEGER PRIMARY KEY AUTOINCREMENT, " + //索引字段 "name VARCHAR(32), " +"phone VARCHAR(16), " +"email VARCHAR(64))";db.execSQL(createTable);

cur=db.rawQuery("SELECT * FROM "+ TB_NAME, null); // 查询数据

// 若查询结果是空的则写入 2 项测试数据if(cur.getCount()==0){    addData("旗标公司","02-23963257","service@flag.com.tw"); addData("旗讯公司","02-23214335","service@pcdiy.com.tw");}

adapter=new SimpleCursorAdapter(this, R.layout.item, cur, FROM, new int[] {R.id.name,R.id.phone,R.id.email}, 0);

lv=(ListView)findViewById(R.id.lv);lv.setAdapter(adapter); // 设置 Adapterlv.setOnItemClickListener(this); // 设置单击事件的监听器requery(); // 调用自定义方法, 重新查询及设置按钮状态

}

private void addData(String name, String phone, String email) {    ContentValues cv=new ContentValues(3); // 创建含 3 个字段的 ContentValues对象 cv.put(FROM[0], name); cv.put(FROM[1], phone); cv.put(FROM[2], email);

 db.insert(TB_NAME, null, cv); // 新增1个记录}

private void update(String name, String phone, String email, int id) { ContentValues cv=new ContentValues(3); cv.put(FROM[0], name); cv.put(FROM[1], phone); cv.put(FROM[2], email);

 db.update(TB_NAME, cv, "_id="+id, null); // 更新 id 所指的字段}

public void call(View v){  // 打电话    String uri="tel:" + cur.getString(cur.getColumnIndex(FROM[1])); Intent it = new Intent(Intent.ACTION_VIEW, Uri.parse(uri)); startActivity(it);}

public void mail(View v){ // 发送电子邮件 String uri="mailto:"+cur.getString(cur.getColumnIndex(FROM[2])); Intent it = new Intent(Intent.ACTION_SENDTO, Uri.parse(uri)); startActivity(it);}