android入门demo--铁哥们通讯录

package com.feelling.ui; import java.util.ArrayList; import com.woz.util.Config; import com.woz.util.DataBaseHelper; import android.app.AlertDialog; import android.content.ContentValues; import android.content.DialogInterface; import android.database.Cursor; import android.database.sqlite.SQLiteDatabase; import android.os.Bundle; import android.view.KeyEvent; import android.view.LayoutInflater; import android.view.View; import android.view.ViewGroup; import android.view.View.OnClickListener; import android.widget.Button; import android.widget.EditText; /**** * @production 铁哥们通讯录 * @company android技术帮--【技术成就梦想】 * @department 群号:85506951 * @author 良仔(qq:953486326) * {@docRoot 通讯录的启动初始化界面 } * @version 1.0 * @since 2011\9\21 * @see 欢迎对android感兴趣的童鞋加入android技术帮，共同学习，共同进步！ * ****/ public class MainActivity extends ProDialogImp { /** Called when the activity is first created. */ //---------- main ---------------- Button addButton,queryButton; // 按钮-添加，查询 //---------- add user ---------------- EditText username,phone; String userStr,phoneStr; //----------- list user ----------------------- @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.main); // main addButton = (Button)findViewById(R.id.addUserBtn); queryButton = (Button)findViewById(R.id.listUserBtn); // 添加 addButton.setOnClickListener(new OnClickListener(){ @Override public void onClick(View v) { // 这里直接跳到添加的ui中去 // setContentView(R.layout.add_user); LayoutInflater inflater = getLayoutInflater(); View layout = inflater.inflate(R.layout.add_user, (ViewGroup)findViewById(R.id.dialog)); // 内容元素 username = (EditText)layout.findViewById(R.id.userNameET); phone = (EditText)layout.findViewById(R.id.phoneNumberET); new AlertDialog.Builder(MainActivity.this).setTitle("添加联系人").setView(layout) .setPositiveButton("确定", new DialogInterface.OnClickListener() { //添加事件 public void onClick(DialogInterface dialog, int which) { // 这里直接跳到添加的ui中去 System.out.println(" on insert table user ---> "); DataBaseHelper dbHelper = new DataBaseHelper(MainActivity.this,Config.DB_NAME); SQLiteDatabase sdb = dbHelper.getWritableDatabase(); // put value userStr = username.getText().toString(); phoneStr = phone.getText().toString(); if(userStr!=null&&phoneStr!=null){ ContentValues cv = new ContentValues(); // cv.put("id", 1); cv.put("title", userStr); cv.put("content", phoneStr); sdb.insert(Config.TABLE_NAME, null, cv); showAlert("数据添加成功!"); }else{ showAlert("数据数据格式错误，请重新输入!"); } }}).setNegativeButton("取消", null).show(); } }); // 查询 queryButton.setOnClickListener(new OnClickListener(){ @Override public void onClick(View v) { DataBaseHelper dbHelper = new DataBaseHelper(MainActivity.this,Config.DB_NAME); SQLiteDatabase db = dbHelper.getReadableDatabase(); Cursor cs = db.query(Config.TABLE_NAME, new String[]{"_id","title","content"}, null, null, null, null, null); ArrayList<String> alist = new ArrayList<String>(); while(cs.moveToNext()){ int id = cs.getInt(cs.getColumnIndex("_id")); String name = cs.getString(cs.getColumnIndex("title")); String con = cs.getString(cs.getColumnIndex("content")); alist.add(id+"."+name+"["+con+"]"); System.out.println(" query [t_note]--> id = "+ id +" name = " + name +" con = " + con ); } final String[] contacts = new String[alist.size()]; for(int a=0;a<alist.size();a++){ contacts[a] = alist.get(a); } new AlertDialog.Builder(MainActivity.this).setTitle("内容列表").setIcon( android.R.drawable.ic_dialog_info).setItems( contacts, new DialogInterface.OnClickListener() { public void onClick(DialogInterface dialog, int which) { //dialog.dismiss(); String artId = contacts[which].substring(0, 1); alertDeleteOpt(artId); // showAlert("msg --> " + artId); } }) .setNegativeButton("取消", null).show(); /* ListAdapter listapt = new SimpleCursorAdapter(MainActivity.this, android.R.layout.simple_expandable_list_item_1, cs, new String[]{"title"}, new int[]{android.R.id.text1} ); ListView listUser = new ListView(MainActivity.this); listUser.setAdapter(listapt); setContentView(listUser); */ } }); } // 删除数据 public void deleteData(String id){ DataBaseHelper dbHelper = new DataBaseHelper(MainActivity.this,Config.DB_NAME); SQLiteDatabase sdb = dbHelper.getWritableDatabase(); sdb.delete(Config.TABLE_NAME, " _id=?", new String[]{id}); //删除数据 } /** * 删除操作 */ public void alertDeleteOpt(final String id){ new AlertDialog.Builder(this) .setCancelable(false) .setMessage("您确定要删除这条信息吗？") .setPositiveButton("确定", new DialogInterface.OnClickListener() { public void onClick(DialogInterface dialog, int which) { deleteData(id); }}) .setNegativeButton("取消", new DialogInterface.OnClickListener() { public void onClick(DialogInterface dialog, int which) { dialog.cancel(); }}) .show(); } //退出程序 @Override public boolean onKeyDown(int keyCode, KeyEvent event) { if (keyCode == KeyEvent.KEYCODE_BACK)// 返回按键 { new AlertDialog.Builder(this) .setCancelable(false) .setIcon(android.R.drawable.btn_star) .setTitle("退出") .setMessage("您确认要退出程序吗？") .setPositiveButton("确定", new DialogInterface.OnClickListener() { public void onClick(DialogInterface dialog, int which) { MainActivity.this.finish(); //关闭程序的核心方法 }}) .setNegativeButton("取消", new DialogInterface.OnClickListener() { public void onClick(DialogInterface dialog, int which) { dialog.cancel(); }}) .show(); } return true; } }