下面是最原始的方法，用SQL语句操作数据库。后面的“Android中SQLite数据库操作（2）——SQLiteOpenHelper类”将介绍一种常用的android封装操作SQLite的工具类。

MainActivity.java

package com.example.sqlitetest;

import android.app.Activity;

import android.database.Cursor;

import android.database.SQLException;

import android.database.sqlite.SQLiteDatabase;

import android.os.Bundle;

import android.support.v4.widget.CursorAdapter;

import android.support.v4.widget.SimpleCursorAdapter;

import android.view.View;

import android.view.View.OnClickListener;

import android.widget.Button;

import android.widget.EditText;

import android.widget.ListView;

public class MainActivity extends Activity {

	SQLiteDatabase db;

	Button bn = null;

	ListView listView;

    @Override

    protected void onCreate(Bundle savedInstanceState) {

        super.onCreate(savedInstanceState);

        setContentView(R.layout.main);

        //创建或打开数据库

        //如果my.db3存在则打开该数据库，如果不存在先创建my.db3文件再打开

        /*

 	      SQLite数据库只是一个文件

  	               从本质上来看，SQLite的数据库操作方式是对文件的操作。

 	    */

        db = SQLiteDatabase.openOrCreateDatabase(this.getFilesDir().toString() + "my.db3", null);

        listView = (ListView) findViewById(R.id.show);

        bn = (Button) findViewById(R.id.ok);

        bn.setOnClickListener(new OnClickListener() {

			@Override

			public void onClick(View source) {

				//获取用户输入

				EditText titleEdit = (EditText) findViewById(R.id.title);

				EditText contentEdit = (EditText) findViewById(R.id.content);

				String title = titleEdit.getText().toString();

				String content = contentEdit.getText().toString();

				try {

					insertData(db, title, content);

					Cursor cursor = db.rawQuery("select * from news_inf", null);

					inflateList(cursor);

				} catch (SQLException se) {

					//执行DDL创建数据表

					db.execSQL("create table news_inf(_id integer" +

					" primary key autoincrement," +

					" news_title varchar(50)," +

					" news_content varchar(255))");

					//执行insert语句插入数据

					insertData(db, title, content);

					//执行查询

					Cursor cursor = db.rawQuery("select * from news_inf", null);

					inflateList(cursor);

				}

			}

		});

    }

    private void insertData(SQLiteDatabase db, String title, String content){

    	//执行插入语句

    	db.execSQL("insert into news_inf values(null, ?, ?)", new String[]{title, content});

    }

    private void inflateList(Cursor cursor){

    	//填充SimpleCursorAdapter

    	SimpleCursorAdapter adapter = new SimpleCursorAdapter(MainActivity.this,

    			R.layout.line, cursor, new String[]{"news_title", "news_content"},

    			new int[]{R.id.my_title, R.id.my_content},

    			CursorAdapter.FLAG_REGISTER_CONTENT_OBSERVER);

    	listView.setAdapter(adapter);

    }

    @Override

    protected void onDestroy() {

    	super.onDestroy();

    	//退出程序时关闭SQLiteDatabase

    	if(db != null && db.isOpen()){

    		db.close();

    	}

    }

}

string.xml

<?xml version="1.0" encoding="utf-8"?>

<resources>

	<string name="hello">Hello World, DBTest!</string>

	<string name="app_name">数据库访问测试</string>

	<string name="insert">插入</string>

</resources>

main.xml

<?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"

	>

<EditText

	android:id="@+id/title"

	android:layout_width="fill_parent"

	android:layout_height="wrap_content"

	/>

<EditText

	android:id="@+id/content"

	android:layout_width="fill_parent"

	android:layout_height="wrap_content"

	android:lines="2"

	/>

<Button

	android:id="@+id/ok"

	android:layout_width="wrap_content"

	android:layout_height="wrap_content"

	android:text="@string/insert"

	/>

<ListView

	android:id="@+id/show"

	android:layout_width="fill_parent"

	android:layout_height="fill_parent"

	/>

</LinearLayout>

line.xml

<?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="fill_parent"

	>

<EditText

	android:id="@+id/my_title"

	android:layout_width="wrap_content"

	android:layout_height="wrap_content"

	android:width="120px"

	/>

<EditText

	android:id="@+id/my_content"

	android:layout_width="fill_parent"

	android:layout_height="wrap_content"

	/>

</LinearLayout>

运行中出现了错误

有错误日志可以看到是创建表时有问题，发现是字段之间忘了空格。

最后的运行结果

有关SQLite部分知识可以参考：http://blog.csdn.net/dawanganban/article/details/9832883

源代码下载：http://download.csdn.net/detail/lxq_xsyu/5890745