百度——地图API——Android—应用集成离线地图
有离线地图，真的挺方便的。具体可以看看我的应用。
http://as.baidu.com/a/item?docid=4120392&pre=web_am_se
最近有网友不知道如何将离线的百度地图，打包在应用中发布。所以整理了这篇博客与大家分享。
1.使用离线地图。经过测试，首次必须在线验证百度的APIKey。
2.离线地图文件，放到res/raw目录下。参见下图。
3.编写代码拷贝函数。
package com.kkstudio.db;import java.io.File;import java.io.FileNotFoundException;import java.io.FileOutputStream;import java.io.IOException;import java.io.InputStream;import com.kkstudio.parkcar.R;import android.content.Context;import android.database.sqlite.SQLiteDatabase;import android.os.Environment;import android.util.Log;public class DBReleasFromAPK {/** Called when the activity is first created. */private static String APK_PATHNAME = "parkcar";// SD卡下的目录private final String DATABASE_PATH = Environment.getExternalStorageDirectory().getPath() + "/" + APK_PATHNAME;private final String MAP_FILENAME = "beijing_131.dat";private final String MAP_FILEPATH = Environment.getExternalStorageDirectory().getPath() + "/BaiduMapSdk/vmp/h/";// 数据库名private final String DATABASE_FILENAME = "data.db";private final String IMAGE_FILENAME = "defaultimg.jpg";private final String DEFAULT_IMAGE_FILENAME = "default.jpg";private final String DEFAULT_IMAGE_06FILENAME = "06.jpg";// 这个context是必需的，没有context，怎么都不能实现数据库的拷贝操作；private Context context;// 构造函数必需传入Context，数据库的操作都带有这个参数的传入public DBReleasFromAPK(Context ctx) {this.context = ctx;//APK_PATHNAME = this.context.getString(R.string.app_name);}public SQLiteDatabase OpenDataBase() {try {String imageFilename = DATABASE_PATH + "/" + IMAGE_FILENAME;String defaultimageFilename = DATABASE_PATH + "/" + DEFAULT_IMAGE_FILENAME;String default06imageFilename = DATABASE_PATH + "/" + DEFAULT_IMAGE_06FILENAME;String mapFilename = MAP_FILEPATH + MAP_FILENAME;String databaseFilename = DATABASE_PATH + "/" + DATABASE_FILENAME;File dir = new File(DATABASE_PATH);// 判断SD卡下是否存在存放数据库的目录，如果不存在，新建目录if (!dir.exists()) {dir.mkdir();Log.i("ReleaseDataBaseActivity", "dir made:" + DATABASE_PATH);} else {Log.i("ReleaseDataBaseActivity", "dir exist:" + DATABASE_PATH);}try {// 如果数据库已经在SD卡的目录下存在，那么不需要重新创建，否则创建文件，并拷贝/res/raw下面的数据库文件if (!(new File(databaseFilename)).exists()) {Log.i("ReleaseDataBaseActivity", "file not exist:"+ databaseFilename);// /res/raw数据库作为输出流InputStream is = this.context.getResources().openRawResource(R.raw.data);// 测试用int size = is.available();Log.i("ReleaseDataBaseActivity", "DATABASE_SIZE:" + 1);Log.i("ReleaseDataBaseActivity", "count:" + 0);// 用于存放数据库信息的数据流FileOutputStream fos = new FileOutputStream(databaseFilename);byte[] buffer = new byte[8192];int count = 0;Log.i("ReleaseDataBaseActivity", "count:" + count);// 把数据写入SD卡目录下while ((count = is.read(buffer)) > 0) {fos.write(buffer, 0, count);}fos.flush();fos.close();is.close();}// patch image fileif (!(new File(defaultimageFilename)).exists()) {// /res/raw数据库作为输出流InputStream is = this.context.getResources().openRawResource(R.raw.defaultimg);// 测试用int size = is.available();// 用于存放数据库信息的数据流FileOutputStream fos = new FileOutputStream(defaultimageFilename);byte[] buffer = new byte[8192];int count = 0;// 把数据写入SD卡目录下while ((count = is.read(buffer)) > 0) {fos.write(buffer, 0, count);}fos.flush();fos.close();is.close();}// patch 06.jpgif (!(new File(default06imageFilename)).exists()) {// /res/raw数据库作为输出流InputStream is = this.context.getResources().openRawResource(R.raw.defaultimg);// 测试用int size = is.available();// 用于存放数据库信息的数据流FileOutputStream fos = new FileOutputStream(default06imageFilename);byte[] buffer = new byte[8192];int count = 0;// 把数据写入SD卡目录下while ((count = is.read(buffer)) > 0) {fos.write(buffer, 0, count);}fos.flush();fos.close();is.close();}// patch download beijing mapif (!(new File(mapFilename)).exists()) {// /res/raw数据库作为输出流InputStream is = this.context.getResources().openRawResource(R.raw.beijing_131);// 测试用int size = is.available();// 用于存放数据库信息的数据流FileOutputStream fos = new FileOutputStream(mapFilename);byte[] buffer = new byte[8192];int count = 0;// 把数据写入SD卡目录下while ((count = is.read(buffer)) > 0) {fos.write(buffer, 0, count);}fos.flush();fos.close();is.close();}} catch (FileNotFoundException e) {Log.e("Database", "File not found");e.printStackTrace();} catch (IOException e) {Log.e("Database", "IO exception");e.printStackTrace();}// 实例化sd卡上得数据库，database作为返回值，是后面所有插入，删除，查询操作的借口。SQLiteDatabase database = SQLiteDatabase.openOrCreateDatabase(databaseFilename, null);return database;} catch (Exception e) {}return null;}}
4.启动类的onCreate中，调用即可。
DBReleasFromAPK dbapk = new DBReleasFromAPK(this); SQLiteDatabase dbsqlite = dbapk.OpenDataBase();
5.剩下的就是别忘记了。修改AndroidManifest.xml，添加存储功能。
6.祝你好运。