Android 个人通讯录【安卓进化十四】

        最近写数据库，我就自己写了个带密码的个人通讯录，感觉sqlite特别好用，和mysql，sqlserver都一样，真是简单的关系型数据库，注意：开启数据库，cursor后一定要记得关闭close（）掉，避免浪费资源。另外adapter的notifyDataSetChanged（）这个方法也特别好用，就是数据库更新的时候，调用一下，baseAdapter中的getview就会重新加载一遍，这样界面就会更新数据，而不用onCreate（）方法来更新，另外可以把notifyDataSetChanged（）方法写在onResume（）方法中，这样在两个activity跳转后按back 键也可以达到刷新界面的效果！

想要源码的可以留言，有问题可以留言，同时也欢迎指正我的纰漏；

转载请标明出处：http://blog.csdn.net/wdaming1986/article/details/6727032

另:csdn下载连接地址：http://download.csdn.net/source/3555843

      

                程序启动后输入密码的界面：                                      第一次启动程序和点击修改密码界面：

                                                                 

 

                      点击确定，进入联系人列表界面：                                     点击menu菜单，有两个菜单键：

                                                               

 

                   单击每一个列表进入修改界面：                                    长按每一个联系人弹dialog删除记录：

                                                               

 

下面看代码：

在com.cn.daming包下的类：

1、Login.java 程序的入口类

package com.cn.daming;import android.app.Activity;import android.content.Intent;import android.os.Bundle;import android.view.View;import android.widget.Button;import android.widget.EditText;import android.widget.Toast;import com.cn.daming.databases.DBOpenHelper;public class Login extends Activity {private DBOpenHelper db;private EditText et;private Button login_button;private String password;@Overrideprotected void onCreate(Bundle bundle) {super.onCreate(bundle);db = new DBOpenHelper(this);password = db.getPwd();db.close();if(password.equals("")){Intent intent = new Intent(Login.this,PasswordManage.class);startActivity(intent);finish();return;}setContentView(R.layout.login);et = (EditText)findViewById(R.id.login_password);login_button = (Button)findViewById(R.id.note_login);login_button.setOnClickListener(new Button.OnClickListener(){public void onClick(View v) {String input_pwd = et.getText().toString();if(password.equals(input_pwd)){Toast.makeText(Login.this, R.string.login_success, Toast.LENGTH_LONG).show();Intent intent = new Intent(Login.this,MainActivity.class);intent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK);startActivity(intent);finish();}else{Toast.makeText(Login.this, R.string.error_password, Toast.LENGTH_LONG).show();et.setText("");}}});}}

2、MainActivity.java类：程序listView列表显示类

package com.cn.daming;import java.util.ArrayList;import java.util.List;import android.app.Activity;import android.app.AlertDialog;import android.content.DialogInterface;import android.content.Intent;import android.database.Cursor;import android.os.Bundle;import android.view.Menu;import android.view.MenuItem;import android.view.View;import android.widget.AdapterView;import android.widget.AdapterView.OnItemClickListener;import android.widget.AdapterView.OnItemLongClickListener;import android.widget.ListView;import android.widget.Toast;import com.cn.daming.adapter.ContantsAdapter;import com.cn.daming.databases.DBOpenHelper;public class MainActivity extends Activity {private DBOpenHelper dbOpenHelper;private ContantsAdapter contantsAdapter;private ListView dbListView;private Cursor cursor;final int MENU_ADD = Menu.FIRST;final int MENU_CHANGE = Menu.FIRST+1;private List<String> ids;private List<String> names;private List<String> phones;AlertDialog dialog;@Override    public void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        setContentView(R.layout.main);        dbOpenHelper = new DBOpenHelper(this);        dbListView = (ListView)findViewById(R.id.db_listview);        refreshDBOpenHelper();        dbListView.setOnItemClickListener(new OnItemClickListener(){public void onItemClick(AdapterView<?> arg0, View arg1, int position,long arg3) {Intent intent= new Intent();intent.putExtra("cmd", 0);String contants_id = ids.get(position);//0代表查询联系人，1代表添加联系人intent.putExtra("id", contants_id);intent.setClass(MainActivity.this, DetailContantsActivity.class);startActivity(intent);}        });                dbListView.setOnItemLongClickListener(new OnItemLongClickListener(){public boolean onItemLongClick(AdapterView<?> arg0, View arg1,final int position, long arg3) {dialog = new AlertDialog.Builder(MainActivity.this)        .setTitle("提示!!")        .setMessage("确定要删除这条记录？")        .setPositiveButton("确定",         new DialogInterface.OnClickListener()         {             public void onClick(DialogInterface dialog, int whichButton)             {             String contants_id = ids.get(position);             dbOpenHelper.deleteContants(contants_id);             dbOpenHelper.close();             Toast.makeText(MainActivity.this, "正在删除数据库，请稍后。。。", Toast.LENGTH_LONG).show();             refreshDBOpenHelper();             contantsAdapter.notifyDataSetChanged();             }             })         .setNegativeButton("取消",new DialogInterface.OnClickListener()         {          public void onClick(DialogInterface dialog, int whichButton)          {             dialog.dismiss();          }      }).show();return false;}        });    }@Overrideprotected void onResume() {refreshDBOpenHelper();contantsAdapter.notifyDataSetChanged();super.onResume();}public void refreshDBOpenHelper(){        cursor = dbOpenHelper.selectContants();        ids = new ArrayList<String>();        names = new ArrayList<String>();        phones = new ArrayList<String>();                int count = cursor.getCount();        if(count>0){        for(int i=0;i<count;i++){        cursor.moveToPosition(i);        ids.add(cursor.getString(0));        names.add(cursor.getString(1));        phones.add(cursor.getString(2));        }        }else{            Toast.makeText(this, R.string.not_dbcursor_values, Toast.LENGTH_SHORT).show();        }        contantsAdapter = new ContantsAdapter(this,names,phones);        dbListView.setAdapter(contantsAdapter);        cursor.close();        dbOpenHelper.close();    }@Overridepublic boolean onCreateOptionsMenu(Menu menu) {menu.add(0, MENU_ADD, 0, R.string.menu_add).setIcon(R.drawable.add);//add - add_button menu.add(0, MENU_CHANGE, 0, R.string.menu_change).setIcon(R.drawable.modify);//add -add_change_passwordreturn super.onCreateOptionsMenu(menu);}@Overridepublic boolean onOptionsItemSelected(MenuItem item) {switch(item.getItemId()){//case MENU_ADD://press change add buttonIntent add_intent= new Intent(this,DetailContantsActivity.class);add_intent.putExtra("cmd", 1);startActivity(add_intent);break;case MENU_CHANGE://press change password buttonIntent change_password_intent = new Intent(MainActivity.this,PasswordManage.class);startActivityForResult(change_password_intent,0);break;}return super.onOptionsItemSelected(item);}}

3、PasswordManage.java，密码设置类：

package com.cn.daming;import com.cn.daming.databases.DBOpenHelper;import android.app.Activity;import android.content.Intent;import android.os.Bundle;import android.view.View;import android.widget.Button;import android.widget.EditText;import android.widget.Toast;public class PasswordManage extends Activity {private EditText et1;private EditText et2;private Button button;private DBOpenHelper db;private int CHANGE_PWD_SUCCESS = 100;public void onCreate(Bundle bundle){super.onCreate(bundle);db = new DBOpenHelper(this);setContentView(R.layout.password_manage);et1 = (EditText)findViewById(R.id.new_password);et2 = (EditText)findViewById(R.id.repeat_password);button = (Button)findViewById(R.id.save_password);button.setOnClickListener(new Button.OnClickListener(){public void onClick(View v) {String new_pwd = et1.getText().toString();String repeat_pwd = et2.getText().toString();if(new_pwd==null||new_pwd.equals("")){Toast.makeText(PasswordManage.this, R.string.password_is_null, Toast.LENGTH_LONG).show();}else{if(new_pwd.equals(repeat_pwd)){if(db.getPwd().equals("")){db.insertPwd(new_pwd);Toast.makeText(PasswordManage.this, R.string.password_set_success, Toast.LENGTH_LONG).show();toNoteList();}else{db.updatePwd(new_pwd);Toast.makeText(PasswordManage.this, R.string.password_change_success, Toast.LENGTH_LONG).show();PasswordManage.this.setResult(CHANGE_PWD_SUCCESS);PasswordManage.this.finish();}}else{Toast.makeText(PasswordManage.this, R.string.password_isnot_equal, Toast.LENGTH_LONG).show();}}}});}public void toNoteList(){Toast.makeText(PasswordManage.this, R.string.password_set_success, Toast.LENGTH_LONG);Intent intent = new Intent(PasswordManage.this,MainActivity.class);intent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK);startActivity(intent);finish();}}

4、DetailContantsActivity。java类，每一条记录，联系人的类：

 

package com.cn.daming;import android.app.Activity;import android.content.ContentValues;import android.content.Intent;import android.database.Cursor;import android.database.sqlite.SQLiteDatabase;import android.os.Bundle;import android.view.View;import android.view.View.OnClickListener;import android.widget.EditText;import android.widget.ImageButton;import android.widget.Toast;import com.cn.daming.databases.DBOpenHelper;public class DetailContantsActivity extends Activity{ Cursor cursor; DBOpenHelper dbOpenHelper; int id = -1;      int [] textIds ={  R.id.etName,  R.id.etPhone,  R.id.etMobile,  R.id.etEmail,  R.id.etPost,  R.id.etAddr,  R.id.etComp }; EditText [] textArray; ImageButton saveButton; //save Button int status = -1; //0表示查看信息，1表示添加联系人，2表示修改联系人  @Override protected void onCreate(Bundle savedInstanceState) {  super.onCreate(savedInstanceState);  setContentView(R.layout.contants_detail);  textArray = new EditText[textIds.length];  for(int i=0;i<textIds.length;i++){   textArray[i] = (EditText)findViewById(textIds[i]);  }  initSaveImageButton();  dbOpenHelper = new DBOpenHelper(this);  Intent intent = getIntent();  status = intent.getExtras().getInt("cmd");   switch(status){  case 0:      String contants_id = intent.getExtras().getString("id");     cursor = dbOpenHelper.getContants(contants_id);   int count = cursor.getCount();   if(count == 0){       Toast.makeText(this, "对不起，没有找到指定的联系人！", Toast.LENGTH_LONG).show();   }   else{         cursor.moveToFirst();        textArray[0].setText(cursor.getString(1));   //设置姓名框中的内容    textArray[1].setText(cursor.getString(2));   //设置固话框中的内容    textArray[2].setText(cursor.getString(3));   //设置手机号码框中的内容    textArray[3].setText(cursor.getString(4));   //设置电子邮件框中的内容    textArray[4].setText(cursor.getString(5));   //设置电子邮件框中的内容    textArray[5].setText(cursor.getString(6));   //设置电子邮件框中的内容    textArray[6].setText(cursor.getString(7));   //设置电子邮件框中的内容   }   cursor.close();   dbOpenHelper.close();   break;  case 1:     //新建详细人信息   for(EditText et:textArray){    et.getEditableText().clear();  //清空各个EditText控件中内容   }   break;  } }  public void initSaveImageButton() {  saveButton = (ImageButton)findViewById(R.id.detailSave);  saveButton.setOnClickListener(new OnClickListener(){   public void onClick(View arg0) {    String [] strArray = new String[textArray.length];    for(int i=0;i<strArray.length;i++){     strArray[i] = textArray[i].getText().toString().trim(); //获得用户输入的信息数组    }    if(strArray[0].equals("") || strArray[1].equals("")){     Toast.makeText(DetailContantsActivity.this, "对不起，请将姓名和电话填写完整!", Toast.LENGTH_LONG).show();    }else{     switch(status){  //判断当前的状态     case 0:    //查询联系人详细信息时按下保存      updateContact(strArray);  //更新联系人信息      break;     case 1:    //新建联系人时按下保存按钮      insertContact(strArray);  //插入联系人信息      break;     }       }   }  }); }  public void insertContact(String [] strArray){  long count = dbOpenHelper.insertContants(strArray);  //插入数据  dbOpenHelper.close();  if(count == -1){   Toast.makeText(this, "添加联系人失败！", Toast.LENGTH_LONG).show();  }  else{   Toast.makeText(this, "添加联系人成功！", Toast.LENGTH_LONG).show();  } }  public void updateContact(String [] strArray){  int count = dbOpenHelper.updateContants(id+"", strArray); //更新数据库  dbOpenHelper.close();  if(count == 1){   Toast.makeText(this, "修改联系人成功！", Toast.LENGTH_LONG).show();  }  else{   Toast.makeText(this, "修改联系人失败！", Toast.LENGTH_LONG).show();  } }}

 

在com.cn.daming.databases包下面的类：
5、DBOpenHelper。java，数据库的类：

package com.cn.daming.databases;import android.content.ContentValues;import android.content.Context;import android.database.Cursor;import android.database.sqlite.SQLiteDatabase;import android.database.sqlite.SQLiteOpenHelper;public class DBOpenHelper extends SQLiteOpenHelper{private final static String DATABASE_NAME = "personal_contacts";private final static int DATABASE_VERSION = 1;private final static String TABLE_NAME = "contants";public static final String ID="_id";       //IDpublic static final String NAME="name";   //名称public static final String PHONE="phone";  //固定电话public static final String MOBILE="mobile";//手机号码public static final String EMAIL="email";  //电子邮件地址public static final String POST="post";   //邮政编码public static final String ADDR="addr";   //通信地址public static final String COMP="comp";   //公司public final static String LOGIN_TABLE_NAME = "contantslogin";public final static String LOGIN_USER = "admin";public final static String LOGIN_PWD = "password";public DBOpenHelper(Context context) {super(context, DATABASE_NAME, null, DATABASE_VERSION);}@Overridepublic void onCreate(SQLiteDatabase db) {String sql = "create table "+TABLE_NAME+" ("+ ID + " integer primary key autoincrement,"+ NAME + " varchar,"+ PHONE+" varchar,"+ MOBILE + " varchar,"+ EMAIL + " varchar,"+ POST + " varchar,"+ ADDR + " varchar,"+ COMP + " varchar)";db.execSQL(sql);sql = "create table "+LOGIN_TABLE_NAME+" ("+LOGIN_USER+" text, "+LOGIN_PWD+" text )";db.execSQL(sql);}@Overridepublic void onUpgrade(SQLiteDatabase db, int arg1, int arg2) {String sql = "drop table if exists "+TABLE_NAME;db.execSQL(sql);sql = "drop table if exists "+LOGIN_TABLE_NAME;db.execSQL(sql);onCreate(db);}public Cursor selectContants(){SQLiteDatabase db = this.getReadableDatabase();Cursor cursor = db.query(TABLE_NAME, null, null, null, null, null, null);return cursor;}public long insertContants(String[] strArray){SQLiteDatabase db = this.getWritableDatabase();ContentValues cv = new ContentValues();cv.put(NAME, strArray[0]);cv.put(PHONE, strArray[1]);cv.put(MOBILE, strArray[2]);cv.put(EMAIL, strArray[3]);cv.put(POST, strArray[4]);cv.put(ADDR, strArray[5]);cv.put(COMP, strArray[6]);return db.insert(TABLE_NAME, null, cv);}public void deleteContants(String id){SQLiteDatabase db = this.getWritableDatabase();String where = ID+"=?";String[] whereValues = {id};db.delete(TABLE_NAME, where, whereValues);}public int updateContants(String id,String[] strArray){SQLiteDatabase db = this.getWritableDatabase();String where = ID+"=?";String[] whereValues = {id};ContentValues cv = new ContentValues();cv.put(NAME, strArray[0]);cv.put(PHONE, strArray[1]);cv.put(MOBILE, strArray[2]);cv.put(EMAIL, strArray[3]);cv.put(POST, strArray[4]);cv.put(ADDR, strArray[5]);cv.put(COMP, strArray[6]);return db.update(TABLE_NAME, cv, where, whereValues);}public Cursor getContants(String id){SQLiteDatabase db = this.getReadableDatabase();String where = ID+"=?";String[] whereValues = {id};Cursor cursor = db.query(TABLE_NAME, null, where, whereValues, null, null, null);return cursor;}public long insertPwd(String password){SQLiteDatabase db = this.getWritableDatabase();ContentValues cv = new ContentValues();cv.put(LOGIN_USER, LOGIN_USER);cv.put(LOGIN_PWD, password);return db.insert(LOGIN_TABLE_NAME, null, cv);}public int updatePwd(String password){SQLiteDatabase db = this.getWritableDatabase();String where = LOGIN_USER+"=?";String[] whereValues = {LOGIN_USER};ContentValues cv = new ContentValues();cv.put(LOGIN_PWD, password);return db.update(LOGIN_TABLE_NAME, cv, where, whereValues);}public String getPwd(){SQLiteDatabase db = this.getReadableDatabase();String where = LOGIN_USER+"=?";String[] whereValues = {LOGIN_USER}; Cursor cursor = db.query(LOGIN_TABLE_NAME, null, where, whereValues, null, null, null);if(cursor.moveToFirst()){return cursor.getString(cursor.getColumnIndex(LOGIN_PWD));}else{return "";}}}

在com.cn.daming.adapter包下的类：

6、ContantsAdapter。java，适配器类：

package com.cn.daming.adapter;import java.util.List;import android.content.Context;import android.view.LayoutInflater;import android.view.View;import android.view.ViewGroup;import android.widget.BaseAdapter;import android.widget.TextView;import com.cn.daming.R;public class ContantsAdapter extends BaseAdapter {private List<String> names;private List<String> phones;private LayoutInflater inflater;private Context context;public ContantsAdapter(Context context,List<String> names ,List<String> phones){inflater = LayoutInflater.from(context);this.names = names;this.phones = phones;this.context = context;}public int getCount() {return names.size();}public Object getItem(int position) {return names.get(position);}public long getItemId(int position) {return position;}public View getView(int position, View view, ViewGroup group) {ContantsHolder holder = new ContantsHolder();if(view==null){view = inflater.inflate(R.layout.contants_list_view, null);holder.contansName = (TextView)view.findViewById(R.id.name_textview);holder.contantsPhone = (TextView)view.findViewById(R.id.phone_textview);view.setTag(holder);}else{holder = (ContantsHolder)view.getTag();}holder.contansName.setText(names.get(position));holder.contantsPhone.setText(phones.get(position));return view;}public class ContantsHolder{private TextView contansName;private TextView contantsPhone;}}

布局文件

1、login。xml布局文件:

<?xml version="1.0" encoding="utf-8"?><LinearLayout  xmlns:android="http://schemas.android.com/apk/res/android"  android:layout_width="fill_parent"  android:layout_height="fill_parent"  android:paddingTop="10dip"  android:orientation="vertical"  android:background="@drawable/background"><TextView  android:layout_width="wrap_content"  android:layout_height="wrap_content"  android:text="@string/please_input_password"  android:textSize="24dip"  android:textStyle="bold"  android:textColor="@drawable/black"  android:layout_gravity="center"/><EditText  android:id="@+id/login_password"  android:layout_width="250dip"  android:layout_height="wrap_content"  android:password="true"  android:layout_gravity="center"  android:layout_marginTop="15dip"/><LinearLayout  android:layout_width="wrap_content"  android:layout_height="wrap_content"  android:layout_gravity="center"  android:layout_marginTop="15dip"><Button  android:id="@+id/note_login"  android:layout_width="100dip"  android:layout_height="wrap_content"  android:text="@string/ok"/></LinearLayout></LinearLayout>

2、contants_detail.xml布局文件

<?xml version="1.0" encoding="utf-8"?><LinearLayoutxmlns:android="http://schemas.android.com/apk/res/android"android:orientation="vertical"android:layout_width="fill_parent"android:layout_height="wrap_content"android:background="@drawable/background"><LinearLayoutxmlns:android="http://schemas.android.com/apk/res/android"android:orientation="horizontal"android:layout_width="fill_parent"android:layout_height="wrap_content"android:layout_gravity="center_horizontal"><!-- 显示联系人姓名线性布局 --><TextViewandroid:layout_width="100px"android:layout_height="wrap_content"android:textSize="18px"android:textColor="@color/text"android:layout_gravity="left|center_vertical"android:text="@string/contantsName"/><EditTextandroid:id="@+id/etName"android:layout_width="fill_parent"android:layout_height="wrap_content"/> </LinearLayout><LinearLayoutxmlns:android="http://schemas.android.com/apk/res/android"android:orientation="horizontal"android:layout_width="fill_parent"android:layout_height="wrap_content"><!-- 显示联系人固定电话的线性布局 --><TextViewandroid:layout_width="100px"android:layout_height="wrap_content"android:textSize="18px"android:textColor="@color/text"android:layout_gravity="center_vertical|left"android:text="@string/contantsPhone"/><EditTextandroid:id="@+id/etPhone"android:layout_width="fill_parent"android:layout_height="wrap_content"android:phoneNumber="true"/> </LinearLayout><LinearLayoutxmlns:android="http://schemas.android.com/apk/res/android"android:orientation="horizontal"android:layout_width="fill_parent"android:layout_height="wrap_content"><!-- 显示联系人手机号码的线性布局 --><TextViewandroid:layout_width="100px"android:layout_height="wrap_content"android:textSize="18px"android:textColor="@color/text"android:layout_gravity="left|center_vertical"android:text="@string/contantsMobile"/><EditTextandroid:id="@+id/etMobile"android:layout_width="fill_parent"android:layout_height="wrap_content"android:phoneNumber="true"/> </LinearLayout><LinearLayoutxmlns:android="http://schemas.android.com/apk/res/android"android:orientation="horizontal"android:layout_width="fill_parent"android:layout_height="wrap_content"><!-- 显示联系人电子邮件的线性布局 --><TextViewandroid:layout_width="100px"android:layout_height="wrap_content"android:textSize="18px"android:textColor="@color/text"android:layout_gravity="left|center_vertical"android:text="@string/contantsEmail"/><EditTextandroid:id="@+id/etEmail"android:layout_width="fill_parent"android:layout_height="wrap_content"/> </LinearLayout> <LinearLayoutxmlns:android="http://schemas.android.com/apk/res/android"android:orientation="horizontal"android:layout_width="fill_parent"android:layout_height="wrap_content"><!-- 显示联系人邮编的线性布局 --><TextViewandroid:layout_width="100px"android:layout_height="wrap_content"android:textSize="18px"android:textColor="@color/text"android:layout_gravity="left|center_vertical"android:text="@string/contantsPost"/><EditTextandroid:id="@+id/etPost"android:layout_width="fill_parent"android:layout_height="wrap_content"/> </LinearLayout>  <LinearLayoutxmlns:android="http://schemas.android.com/apk/res/android"android:orientation="horizontal"android:layout_width="fill_parent"android:layout_height="wrap_content"><!-- 显示联系人通信地址的线性布局 --><TextViewandroid:layout_width="100px"android:layout_height="wrap_content"android:textSize="18px"android:textColor="@color/text"android:layout_gravity="left|center_vertical"android:text="@string/contantsAddr"/><EditTextandroid:id="@+id/etAddr"android:layout_width="fill_parent"android:layout_height="wrap_content"/> </LinearLayout><LinearLayoutxmlns:android="http://schemas.android.com/apk/res/android"android:orientation="horizontal"android:layout_width="fill_parent"android:layout_height="wrap_content"><!-- 显示联系人公司的线性布局 --><TextViewandroid:layout_width="100px"android:layout_height="wrap_content"android:textSize="18px"android:textColor="@color/text"android:layout_gravity="left|center_vertical"android:text="@string/contantsComp"/><EditTextandroid:id="@+id/etComp"android:layout_width="fill_parent"android:layout_height="wrap_content"/> </LinearLayout> <ImageButton android:id="@+id/detailSave" android:layout_width="fill_parent" android:layout_height="wrap_content" android:src="@drawable/save" /></LinearLayout>

 

3、contants_list_view.xml，每一个list的item布局文件

<?xml version="1.0" encoding="utf-8"?><LinearLayout  xmlns:android="http://schemas.android.com/apk/res/android"  android:layout_width="match_parent"  android:layout_height="match_parent"  android:orientation="horizontal">  <TextView      android:id="@+id/name_textview"      android:layout_width="150dip"      android:layout_height="wrap_content"      android:layout_marginRight="10dip"      android:textColor="#000000"      android:textSize="10pt"  />  <TextView      android:id="@+id/phone_textview"      android:layout_width="165dip"      android:layout_height="wrap_content"      android:textColor="#000000"      android:textSize="10pt"  /></LinearLayout>

 

4、main.xml布局文件

<?xml version="1.0" encoding="utf-8"?><LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"    android:orientation="vertical"    android:layout_width="fill_parent"    android:layout_height="fill_parent"    android:background="@drawable/background"    >    <LinearLayout    android:orientation="horizontal"    android:layout_width="wrap_content"    android:layout_height="wrap_content"    android:layout_gravity="center_horizontal"    >    <TextView    android:layout_width="wrap_content"    android:layout_height="wrap_content"    android:layout_gravity="center_horizontal"    android:text="@string/title"    android:textSize="24px"    android:textColor="@color/text"    />    <ImageView    android:layout_width="wrap_content"    android:layout_height="wrap_content"    android:src="@drawable/title"    />    </LinearLayout>    <ListViewandroid:id="@+id/db_listview"android:layout_width="fill_parent"android:layout_height="fill_parent"android:choiceMode="singleChoice"/> </LinearLayout>

 

5、password_manage.xml布局文件

<?xml version="1.0" encoding="utf-8"?><LinearLayout  xmlns:android="http://schemas.android.com/apk/res/android"  android:layout_width="fill_parent"  android:layout_height="wrap_content"  android:orientation="vertical"   android:background="@drawable/background" >  <TextView  android:layout_width="wrap_content"  android:layout_height="wrap_content"  android:layout_gravity="center"  android:textStyle="bold"  android:textSize="26dip"  android:padding="6dip"  android:paddingBottom="10dip"  android:textColor="@drawable/black"  android:text="@string/password_manage"/><TableLayout  android:layout_width="fill_parent"  android:layout_height="wrap_content"  android:layout_marginTop="20dip"  android:layout_marginLeft="10dip"><TableRow  android:layout_width="fill_parent"  android:layout_height="50dip"><TextView  android:layout_width="wrap_content"  android:layout_height="fill_parent"  android:text="@string/new_password"  android:layout_gravity="right"  android:gravity="center"  android:textColor="#000000"  android:textSize="11pt"/><EditText  android:id="@+id/new_password"  android:layout_width="180dip"  android:layout_height="wrap_content"    android:password="true"  android:layout_marginLeft="20dip"/></TableRow><TableRow  android:layout_width="fill_parent"  android:layout_height="50dip"  android:layout_marginTop="10dip"  android:gravity="center_vertical"  ><TextView  android:layout_width="wrap_content"  android:layout_height="fill_parent"  android:text="@string/repeat_password"  android:layout_gravity="right"  android:gravity="center_vertical"  android:textColor="#000000"  android:textSize="11pt"/><EditText  android:id="@+id/repeat_password"  android:layout_width="180dip"  android:layout_height="wrap_content"    android:password="true"  android:layout_marginLeft="20dip"/></TableRow></TableLayout><LinearLayout  android:layout_width="fill_parent"  android:layout_height="wrap_content"  android:gravity="center"  android:layout_marginTop="20dip"><Button  android:id="@+id/save_password"  android:layout_width="80dip"  android:layout_height="wrap_content"  android:text="@string/ok"  android:textSize="16dip"/></LinearLayout></LinearLayout>

 

values下的文件

1、string。xml文件

<?xml version="1.0" encoding="utf-8"?><resources>    <string name="hello">Hello World, MainActivity!</string>    <string name="app_name">ContantsApp</string>        <string name="please_input_password">请输入大明通讯录密码：</string>    <string name="ok">确定</string>        <string name="login_success">恭喜，登陆成功！</string>    <string name="error_password">您输入的密码错误，请重新输入！</string>        <string name="password_manage">大明通讯录密码管理：</string>    <string name="new_password">新密码：</string>    <string name="repeat_password">再一次：</string>        <string name="password_is_null">输入密码为空，请输入密码！</string>    <string name="password_set_success">密码设置成功！</string>    <string name="password_change_success">密码修改成功！</string>    <string name="password_isnot_equal">两次输入的密码不一致，请重新输入密码！</string>        <string name="title">大明通讯录列表</string>    <string name="not_dbcursor_values">数据库中没有记录，请点击菜单新建通讯录！</string>        <string name="contantsName">姓名：</string>    <string name="contantsPhone">固定电话：</string>    <string name="contantsMobile">移动电话：</string>    <string name="contantsEmail">电子邮件：</string>    <string name="contantsPost">邮政编码：</string>    <string name="contantsAddr">通讯地址：</string>    <string name="contantsComp">公司地址：</string>        <string name="menu_add">增加</string>    <string name="menu_change">修改密码</string></resources>

 

2、color。xml文件

<?xml version="1.0" encoding="utf-8"?><resources><drawable name="white">#FFFFFF</drawable><drawable name="black">#FF000000</drawable><drawable name="dackgray">#666666</drawable><drawable name="red">#FFFF0000</drawable><drawable name="blue">#FF0000FF</drawable><drawable name="yellow">#FFFFFF00</drawable><drawable name="green">#FF00FF00</drawable><color name="text">#000000</color><drawable name="changshise">#FFD19275</drawable></resources>

 

AndroidManifest.xml：

 

<?xml version="1.0" encoding="utf-8"?><manifest xmlns:android="http://schemas.android.com/apk/res/android"      package="com.cn.daming"      android:versionCode="1"      android:versionName="1.0">    <uses-sdk android:minSdkVersion="8" />    <application android:icon="@drawable/icon" android:label="@string/app_name">        <activity android:name=".Login"                  android:label="@string/app_name">            <intent-filter>                <action android:name="android.intent.action.MAIN" />                <category android:name="android.intent.category.LAUNCHER" />            </intent-filter>        </activity>        <activity android:name=".MainActivity"></activity>        <activity android:name=".PasswordManage"></activity>        <activity android:name=".DetailContantsActivity"></activity>    </application></manifest>