在main.xml中：

encoding="utf-8"?>

xmlns:android="http://schemas.android.com/apk/res/android"

android:id="@+id/mylayout"

android:layout_width="fill_parent"

android:layout_height="fill_parent"

android:orientation="vertical"

android:gravity="center_horizontal">

android:id="@+id/findBut"

android:layout_marginTop="8dp"

android:background="#0066ff"

android:textColor="#ffffff"

android:layout_width="100dp"

android:layout_height="40dp"

android:text="查詢全部數據" />

在MyDatabaseHelper.java類中：

package com.li.sqlite;

//數據庫的輔助操作類

import android.content.Context;

import android.database.sqlite.SQLiteDatabase;

import android.database.sqlite.SQLiteOpenHelper;

public class MyDatabaseHelper extends SQLiteOpenHelper {

private static final String DATABASENAME =

"liyewen.db" ;

private static final int DATABASERVERSION = 1

;?// 設置數據庫的版本

private static final String TABLENAME =

"mytab" ;

public MyDatabaseHelper(Context context)

{?// 用戶最關心的也肯定只是Context

super(context, DATABASENAME, null, DATABASERVERSION);

}

@Override

public void onCreate(SQLiteDatabase db) { //

創建數據表

String sql = "CREATE TABLE " + TABLENAME + "("

+ "id?INTEGER?PRIMARY KEY ," ?// 在SQLite中設置為Integer、PRIMARY

KEY則ID自動增長

+ "name ?VARCHAR(50) ?NOT NULL

,"

+ "birthday DATE NOT ?NULL" +

")";

db.execSQL(sql) ;?// 執行SQL

System.out.println("****************** 創建：onCreate()。");

}

@Override

public void onUpgrade(SQLiteDatabase db, int

oldVersion, int newVersion) {

String sql = "DROP TABLE IF EXISTS " + TABLENAME ;

db.execSQL(sql) ;

System.out.println("****************** 更新：onUpgrade()。");

this.onCreate(db) ;

}

}

在MytabCursor.java類中：

package com.li.sqlite;

import java.util.ArrayList;

import java.util.List;

import android.database.Cursor;

import android.database.sqlite.SQLiteDatabase;

public class MytabCursor {

private static final String TABLENAME =

"mytab" ;

private SQLiteDatabase db = null ;

public MytabCursor(SQLiteDatabase db) {

this.db = db ;

}

public

List find(){

List all = new

ArrayList() ; //

此時只是String

String sql = "SELECT id,name,birthday FROM " + TABLENAME ;

Cursor result = this.db.rawQuery(sql, null); // 執行查詢語句

for (result.moveToFirst(); !result.isAfterLast();

result.moveToNext()) { // 采用循環的方式檢索數據

all.add("【" + result.getInt(0) + "】" + " " +

result.getString(1)

+ "，" + result.getString(2));

}

this.db.close() ;

return all ;

}

}

在MySQLiteDemo.java中：

package com.li.sqlite;

import android.app.Activity;

import android.database.sqlite.SQLiteOpenHelper;

import android.os.Bundle;

import android.view.View;

import android.view.View.OnClickListener;

import android.widget.ArrayAdapter;

import android.widget.Button;

import android.widget.LinearLayout;

import android.widget.ListView;

public class MySQLiteDemo extends Activity {

private Button findBut = null;

private SQLiteOpenHelper helper = null;

private LinearLayout mylayout = null;

@Override

public void onCreate(Bundle

savedInstanceState) {

super.onCreate(savedInstanceState);

super.setContentView(R.layout.main);

this.findBut = (Button)super.findViewById(R.id.findBut);

this.mylayout =

(LinearLayout)super.findViewById(R.id.mylayout);

this.findBut.setOnClickListener(new OnClickListenerImpl());

}

private class OnClickListenerImpl implements

OnClickListener{

public void onClick(View v) {

MySQLiteDemo.this.helper = new

MyDatabaseHelper(MySQLiteDemo.this);

ListView listView = new ListView(MySQLiteDemo.this);

listView.setAdapter( //設置數據

new

ArrayAdapter?//所有的數據是字符串

(MySQLiteDemo.this,?//上下文

android.R.layout.simple_list_item_1, //列表顯示的布局

new

MytabCursor(?//實例化查詢

MySQLiteDemo.this.helper.getReadableDatabase())?//取得SQLiteDatabase對象

.find()));?//調用find()方法，返回List

MySQLiteDemo.this.mylayout.addView(listView);

}

}

}

總結

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