Project——SQLite数据库操作（采用ListView实现数据列表展现）

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1、

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="cn.itcast.db"
android:versionCode="1"
android:versionName="1.0">
<application android:icon="@drawable/icon" android:label="@string/app_name">
<uses-library android:name="android.test.runner" />
<activity android:name=".MainActivity"
android:label="@string/app_name">
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
<provider android:name=".PersonContentProvider" android:authorities="cn.itcast.provides.personprovider"/>
</application>
<uses-sdk android:minSdkVersion="8" />
<instrumentation android:name="android.test.InstrumentationTestRunner"
android:targetPackage="cn.itcast.db" android:label="Tests for My App" />
</manifest>

2、

package cn.itcast.db;

import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;

import cn.itcast.domain.Person;
import cn.itcast.service.PersonService;
import android.app.Activity;
import android.content.ContentResolver;
import android.content.ContentValues;
import android.database.Cursor;
import android.net.Uri;
import android.os.Bundle;
import android.util.Log;
import android.view.View;
import android.widget.AdapterView;
import android.widget.Button;
import android.widget.ListView;
import android.widget.SimpleAdapter;
import android.widget.SimpleCursorAdapter;
import android.widget.Toast;
import android.widget.AdapterView.OnItemClickListener;

public class MainActivity extends Activity {
private static final String TAG = "MainActivity";
private ListView listView;
private PersonService service;

@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);

Button button = (Button)this.findViewById(R.id.button);
button.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
ContentResolver contentResolver = getContentResolver();
Uri insertUri = Uri.parse("content://cn.itcast.provides.personprovider/person");
ContentValues values = new ContentValues();
values.put("name","laofang");
values.put("phone","13800029333");
values.put("amount","1000");
contentResolver.insert(insertUri,values);
}
});

listView = (ListView)this.findViewById(R.id.listView);
service = new PersonService(this);
/* List<Person> persons = service.getScrollData(0,5);
List<HashMap<String,Object>> data = new ArrayList<HashMap<String,Object>>();
for(Person person : persons){
HashMap<String,Object> item = new HashMap<String,Object>();
item.put("name",person.getName());
item.put("phone",person.getPhone());
item.put("amount",person.getAmount());
data.add(item);
}
SimpleAdapter adapter = new SimpleAdapter(this,data,R.layout.item,
new String[]{"name","phone","amount"},new int[]{R.id.name,R.id.phone,R.id.amount});
listView.setAdapter(adapter);

listView.setOnItemClickListener(new ItemClickListener());
*/
Cursor cursor = service.getCursorScrollData(0,5);
SimpleCursorAdapter cursorAdapter = new SimpleCursorAdapter(this,cursor,R.id.amount});
listView.setAdapter(cursorAdapter);
listView.setOnItemClickListener(new ItemClickListener());
}

private final class ItemClickListener implements OnItemClickListener{
@Override
public void onItemClick(AdapterView<?> parent,View view,int position,long id) {
ListView lView = (ListView)parent;
/*HashMap<String,Object> item = (HashMap<String,Object>)lView.getItemAtPosition(position);
Log.i(TAG,item.get("name").toString());
Toast.makeText(MainActivity.this,item.get("name").toString(),1).show();*/
Cursor cursor = (Cursor)lView.getItemAtPosition(position);
String name = cursor.getString(cursor.getColumnIndex("name"));
Toast.makeText(MainActivity.this,name,1).show();
}

}
}

3、

package cn.itcast.db;

import cn.itcast.service.DBOpenHelper;
import android.content.ContentProvider;
import android.content.ContentUris;
import android.content.ContentValues;
import android.content.UriMatcher;
import android.database.Cursor;
import android.database.sqlite.sqliteDatabase;
import android.net.Uri;

public class PersonContentProvider extends ContentProvider {
private static final UriMatcher sMatcher = new UriMatcher(UriMatcher.NO_MATCH);
private static final int PERSONS = 1;
private static final int PERSON = 2;
private DBOpenHelper dbOpenHelper;

static{
sMatcher.addURI("cn.itcast.provides.personprovider","person",PERSONS);
sMatcher.addURI("cn.itcast.provides.personprovider","person/#",PERSON);
}
// content://cn.itcast.provides.personprovider/person
@Override
public Uri insert(Uri uri,ContentValues values) {
sqliteDatabase db = dbOpenHelper.getWritableDatabase();
switch (sMatcher.match(uri)) {
case PERSONS:
long rowid = db.insert("person","name",values);
getContext().getContentResolver().notifyChange(uri,null);
return ContentUris.withAppendedId(uri,rowid);
default:
throw new IllegalArgumentException("Unknown Uri:"+ uri);
}
}
// content://cn.itcast.provides.personprovider/person 删除表中的所有记录
// content://cn.itcast.provides.personprovider/person/10 删除表中指定id的记录
@Override
public int delete(Uri uri,String selection,String[] selectionArgs) {
sqliteDatabase db = dbOpenHelper.getWritableDatabase();
int num = 0;
switch (sMatcher.match(uri)) {
case PERSONS:
num = db.delete("person",selection,selectionArgs);
break;
case PERSON:
long personid = ContentUris.parseId(uri);
String where = "personid="+ personid;
if(selection!=null && !"".equals(selection)){
where = where + " and "+ selection;
}
num = db.delete("person",where,selectionArgs);
break;
default:
throw new IllegalArgumentException("Unknown Uri:"+ uri);
}
getContext().getContentResolver().notifyChange(uri,null);
return num;
}

@Override
public String getType(Uri uri) {// gif image/gif text/plain
switch (sMatcher.match(uri)) {
case PERSONS:
return "vnd.android.cursor.dir/person";
case PERSON:
return "vnd.android.cursor.item/person";
default:
throw new IllegalArgumentException("Unknown Uri:"+ uri);
}
}


@Override
public boolean onCreate() {
this.dbOpenHelper = new DBOpenHelper(this.getContext());
return true;
}

// content://cn.itcast.provides.personprovider/person 获取表中的所有记录
// content://cn.itcast.provides.personprovider/person/10 获取表中指定id的记录
@Override
public Cursor query(Uri uri,String[] projection,
String[] selectionArgs,String sortOrder) {
sqliteDatabase db = dbOpenHelper.getReadableDatabase();
switch (sMatcher.match(uri)) {
case PERSONS:
return db.query("person",projection,selectionArgs,null,sortOrder);

case PERSON:
long personid = ContentUris.parseId(uri);
String where = "personid="+ personid;
if(selection!=null && !"".equals(selection)){
where = where + " and "+ selection;
}
return db.query("person",sortOrder);

default:
throw new IllegalArgumentException("Unknown Uri:"+ uri);
}
}
// content://cn.itcast.provides.personprovider/person 更新表中的所有记录
// content://cn.itcast.provides.personprovider/person/10 更新表中指定id的记录
@Override
public int update(Uri uri,ContentValues values,String[] selectionArgs) {
sqliteDatabase db = dbOpenHelper.getWritableDatabase();
int num = 0;
switch (sMatcher.match(uri)) {
case PERSONS:
num = db.update("person",values,selectionArgs);
break;
case PERSON:
long personid = ContentUris.parseId(uri);
String where = "personid="+ personid;
if(selection!=null && !"".equals(selection)){
where = where + " and "+ selection;
}
num = db.update("person",null);
return num;
}

}

4、

package cn.itcast.db;

import java.util.List;

import cn.itcast.domain.Person;
import cn.itcast.service.OtherPersonService;
import android.test.AndroidTestCase;
import android.util.Log;

public class OtherPersonServiceTest extends AndroidTestCase {
private static final String TAG = "PersonServiceTest";

public void testSave() throws Throwable{
OtherPersonService service = new OtherPersonService(this.getContext());
Person person = new Person();
person.setName("zhangxiaoxiao");
person.setPhone("13671555567");
service.save(person);

Person person2 = new Person();
person2.setName("laobi");
person2.setPhone("13679993567");
service.save(person2);

Person person3 = new Person();
person3.setName("lili");
person3.setPhone("13888323567");
service.save(person3);

Person person4 = new Person();
person4.setName("zhaoxiaogang");
person4.setPhone("1367132300");
service.save(person4);
}

public void testFind() throws Throwable{
OtherPersonService service = new OtherPersonService(this.getContext());
Person person = service.find(1);
Log.i(TAG,person.toString());
}

public void testUpdate() throws Throwable{
OtherPersonService service = new OtherPersonService(this.getContext());
Person person = service.find(1);
person.setName("liming");
service.update(person);
}

public void testCount() throws Throwable{
OtherPersonService service = new OtherPersonService(this.getContext());
Log.i(TAG,service.getCount()+"");
}

public void testScrollData() throws Throwable{
OtherPersonService service = new OtherPersonService(this.getContext());
List<Person> persons = service.getScrollData(0,3);
for(Person person : persons){
Log.i(TAG,person.toString());
}
}

public void testDelete() throws Throwable{
OtherPersonService service = new OtherPersonService(this.getContext());
service.delete(1);
}
}

5、

package cn.itcast.db;

import java.util.List;

import cn.itcast.domain.Person;
import cn.itcast.service.DBOpenHelper;
import cn.itcast.service.PersonService;
import android.test.AndroidTestCase;
import android.util.Log;

public class PersonServiceTest extends AndroidTestCase {
private static final String TAG = "PersonServiceTest";

public void testDBCreate() throws Throwable{
DBOpenHelper dbOpenHelper = new DBOpenHelper(this.getContext());
dbOpenHelper.getWritableDatabase();
}

public void testSave() throws Throwable{
PersonService service = new PersonService(this.getContext());
Person person = new Person();
person.setName("zhangxiaoxiao");
person.setPhone("13671555567");
person.setAmount(100);
service.save(person);

Person person2 = new Person();
person2.setName("laobi");
person2.setPhone("13679993567");
person2.setAmount(50);
service.save(person2);

Person person3 = new Person();
person3.setName("lili");
person3.setPhone("13888323567");
person3.setAmount(80);
service.save(person3);

Person person4 = new Person();
person4.setName("zhaoxiaogang");
person4.setPhone("1367132300");
person4.setAmount(90);
service.save(person4);
}

public void testFind() throws Throwable{
PersonService service = new PersonService(this.getContext());
Person person = service.find(1);
Log.i(TAG,person.toString());
}

public void testUpdate() throws Throwable{
PersonService service = new PersonService(this.getContext());
Person person = service.find(1);
person.setName("liming");
service.update(person);
}

public void testCount() throws Throwable{
PersonService service = new PersonService(this.getContext());
Log.i(TAG,service.getCount()+"");
}

public void testScrollData() throws Throwable{
PersonService service = new PersonService(this.getContext());
List<Person> persons = service.getScrollData(0,person.toString());
}
}

public void testDelete() throws Throwable{
PersonService service = new PersonService(this.getContext());
service.delete(1);
}

public void testPayment() throws Throwable{
PersonService service = new PersonService(this.getContext());
service.payment();
}

}

6、

package cn.itcast.domain;

public class Person {
private Integer id;
private String name;
private String phone;
private Integer amount;

public Integer getAmount() {
return amount;
}

public void setAmount(Integer amount) {
this.amount = amount;
}

public Person(){}

public Person(Integer id,String name,String phone,Integer amount) {
this.id = id;
this.name = name;
this.phone = phone;
this.amount = amount;
}

public Person(Integer id,String phone) {
this.id = id;
this.name = name;
this.phone = phone;
}
public Integer getId() {
return id;
}
public void setId(Integer id) {
this.id = id;
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public String getPhone() {
return phone;
}
public void setPhone(String phone) {
this.phone = phone;
}

@Override
public String toString() {
return "Person [amount=" + amount + ",id=" + id + ",name=" + name
+ ",phone=" + phone + "]";
}



}

7、

package cn.itcast.service;

import android.content.Context;
import android.database.sqlite.sqliteDatabase;
import android.database.sqlite.sqliteOpenHelper;

public class DBOpenHelper extends sqliteOpenHelper {

public DBOpenHelper(Context context) {
super(context,"itcast.db",2);
}

@Override
public void onCreate(sqliteDatabase db) {
db.execsql("CREATE TABLE person (personid integer primary key autoincrement,name varchar(20))");
}

@Override
public void onUpgrade(sqliteDatabase db,int oldVersion,int newVersion) {
db.execsql("ALTER TABLE person ADD phone VARCHAR(12) NULL");
db.execsql("ALTER TABLE person ADD amount integer");
}

}

8、

package cn.itcast.service;

import java.util.ArrayList;
import java.util.List;

import android.content.Context;
import android.database.Cursor;
import android.database.sqlite.sqliteDatabase;

import cn.itcast.domain.Person;

public class PersonService {
private DBOpenHelper dbOpenHelper;

public PersonService(Context context){
dbOpenHelper = new DBOpenHelper(context);
}

public void payment(){
sqliteDatabase db = dbOpenHelper.getWritableDatabase();
db.beginTransaction();//开启事务
try{
db.execsql("update person set amount=amount-10 where personid=?",new Object[]{1});
db.execsql("update person set amount=amount+10 where personid=?",new Object[]{2});
db.setTransactionSuccessful();//设置事务标志为成功，在结束事务时才会提供事务，否则回滚事务
}finally{
db.endTransaction();//结束事务
}
}

public void save(Person person){
sqliteDatabase db = dbOpenHelper.getWritableDatabase();
db.execsql("insert into person(name,phone,amount) values(?,?,?)",
new Object[]{person.getName(),person.getPhone(),person.getAmount()});
//db.close();
}

public void update(Person person){
sqliteDatabase db = dbOpenHelper.getWritableDatabase();
db.execsql("update person set name=?,phone=?,amount=? where personid=?",person.getAmount(),person.getId()});
}

public void delete(Integer id){
sqliteDatabase db = dbOpenHelper.getWritableDatabase();
db.execsql("delete from person where personid=?",new Object[]{id});
}

public Person find(Integer id){
sqliteDatabase db = dbOpenHelper.getReadableDatabase();
Cursor cursor = db.rawQuery("select * from person where personid=?",new String[]{id.toString()});
if(cursor.moveToFirst()){
int personid = cursor.getInt(cursor.getColumnIndex("personid"));
String name = cursor.getString(cursor.getColumnIndex("name"));
String phone = cursor.getString(cursor.getColumnIndex("phone"));
int amount = cursor.getInt(cursor.getColumnIndex("amount"));
cursor.close();
return new Person(personid,amount);
}
return null;
}

public List<Person> getScrollData(int offset,int maxResult){
List<Person> persons = new ArrayList<Person>();
sqliteDatabase db = dbOpenHelper.getReadableDatabase();
Cursor cursor = db.rawQuery("select * from person limit ?,?",
new String[]{String.valueOf(offset),String.valueOf(maxResult)});
while(cursor.moveToNext()){
int personid = cursor.getInt(cursor.getColumnIndex("personid"));
String name = cursor.getString(cursor.getColumnIndex("name"));
String phone = cursor.getString(cursor.getColumnIndex("phone"));
int amount = cursor.getInt(cursor.getColumnIndex("amount"));
persons.add(new Person(personid,amount));
}
return persons;
}

public Cursor getCursorScrollData(int offset,int maxResult){
sqliteDatabase db = dbOpenHelper.getReadableDatabase();
return db.rawQuery("select personid as _id,amount from person limit ?,String.valueOf(maxResult)});
}

public long getCount(){
sqliteDatabase db = dbOpenHelper.getReadableDatabase();
Cursor cursor = db.rawQuery("select count(*) from person",null);
cursor.moveToFirst();
return cursor.getLong(0);
}
}

9、

package cn.itcast.service;

import java.util.ArrayList;
import java.util.List;

import android.content.ContentValues;
import android.content.Context;
import android.database.Cursor;
import android.database.sqlite.sqliteDatabase;

import cn.itcast.domain.Person;

public class OtherPersonService {
private DBOpenHelper dbOpenHelper;

public OtherPersonService(Context context){
dbOpenHelper = new DBOpenHelper(context);
}

public void save(Person person){
sqliteDatabase db = dbOpenHelper.getWritableDatabase();
ContentValues values = new ContentValues();
values.put("name",person.getName());
values.put("phone",person.getPhone());
values.put("amount",person.getAmount());
db.insert("person",values); // insert into person(personid) values(NULL)
//db.close();
}

public void update(Person person){
sqliteDatabase db = dbOpenHelper.getWritableDatabase();
ContentValues values = new ContentValues();
values.put("name",person.getAmount());
db.update("person","personid=?",new String[]{person.getId().toString()});
}

public void delete(Integer id){
sqliteDatabase db = dbOpenHelper.getWritableDatabase();
db.delete("person",new String[]{id.toString()});
}

public Person find(Integer id){
sqliteDatabase db = dbOpenHelper.getReadableDatabase();
Cursor cursor = db.query("person",new String[]{"personid","phone"},
"personid=?",new String[]{id.toString()},null);
if(cursor.moveToFirst()){
int personid = cursor.getInt(cursor.getColumnIndex("personid"));
String name = cursor.getString(cursor.getColumnIndex("name"));
String phone = cursor.getString(cursor.getColumnIndex("phone"));
int amount = cursor.getInt(cursor.getColumnIndex("amount"));
cursor.close();
return new Person(personid,int maxResult){
List<Person> persons = new ArrayList<Person>();
sqliteDatabase db = dbOpenHelper.getReadableDatabase();
Cursor cursor = db.query("person",offset+ ","+ maxResult);
while(cursor.moveToNext()){
int personid = cursor.getInt(cursor.getColumnIndex("personid"));
String name = cursor.getString(cursor.getColumnIndex("name"));
String phone = cursor.getString(cursor.getColumnIndex("phone"));
int amount = cursor.getInt(cursor.getColumnIndex("amount"));
persons.add(new Person(personid,amount));
}
return persons;
}

public long getCount(){
sqliteDatabase db = dbOpenHelper.getReadableDatabase();
Cursor cursor = db.query("person",new String[]{"count(*)"},null);
cursor.moveToFirst();
return cursor.getLong(0);
}
}

10、

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout
xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="horizontal"
android:layout_width="fill_parent"
android:layout_height="wrap_content">

<TextView
android:layout_width="100dip"
android:layout_height="wrap_content"
android:text="姓名"
android:id="@+id/name"
/>

<TextView
android:layout_width="100dip"
android:layout_height="wrap_content"
android:text="电话"
android:id="@+id/phone"
/>

<TextView
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:text="存款"
android:id="@+id/amount"
/>
</LinearLayout>
11、

<?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" > <Button android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="往内容提供者添加数据" android:id="@+id/button" /> <LinearLayout android:orientation="horizontal" android:layout_width="fill_parent" android:layout_height="wrap_content"> <TextView android:layout_width="100dip" android:layout_height="wrap_content" android:text="姓名" /> <TextView android:layout_width="100dip" android:layout_height="wrap_content" android:text="电话" /> <TextView android:layout_width="fill_parent" android:layout_height="wrap_content" android:text="存款" /> </LinearLayout> <ListView android:layout_width="fill_parent" android:layout_height="fill_parent" android:id="@+id/listView" /> </LinearLayout>

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