package net.comikon.reader.dao; import java.io.File; import java.io.IOException; import android.content.Context; import android.content.ContextWrapper; import android.database.DatabaseErrorHandler; import android.database.sqlite.SQLiteDatabase; import android.database.sqlite.SQLiteDatabase.CursorFactory; import android.database.sqlite.SQLiteOpenHelper; import android.util.Log; import de.greenrobot.dao.AbstractDaoMaster; import de.greenrobot.dao.identityscope.IdentityScopeType; import net.comikon.reader.dao.SiteDao; import net.comikon.reader.dao.ResourceDao; import net.comikon.reader.dao.ComicDao; // THIS CODE IS GENERATED BY greenDAO, DO NOT EDIT. /** * Master of DAO (schema version 1000): knows all DAOs. */ public class DaoMaster extends AbstractDaoMaster { public static final int SCHEMA_VERSION = 1000; /** Creates underlying database table using DAOs. */ public static void createAllTables(SQLiteDatabase db, boolean ifNotExists) { SiteDao.createTable(db, ifNotExists); ResourceDao.createTable(db, ifNotExists); ComicDao.createTable(db, ifNotExists); } /** Drops underlying database table using DAOs. */ public static void dropAllTables(SQLiteDatabase db, boolean ifExists) { SiteDao.dropTable(db, ifExists); ResourceDao.dropTable(db, ifExists); ComicDao.dropTable(db, ifExists); } public static abstract class OpenHelper extends SQLiteOpenHelper { public OpenHelper(Context context, String name, CursorFactory factory) { super(new ContextWrapper(context) { /** * 获得数据库路径,如果不存在,则创建对象对象 * * @param name * @param mode * @param factory */ @Override public File getDatabasePath(String name) { // 判断是否存在sd卡 boolean sdExist = android.os.Environment.MEDIA_MOUNTED.equals(android.os.Environment.getExternalStorageState()); if (!sdExist) {// 如果不存在, Log.e("SD卡管理:", "SD卡不存在,请加载SD卡"); return null; } else {// 如果存在 // 获取sd卡路径 String dbDir = android.os.Environment.getExternalStorageDirectory().getAbsolutePath(); dbDir += "/net.comikon.reader";// 数据库所在目录 String dbPath = dbDir + "/" + name;// 数据库路径 // 判断目录是否存在,不存在则创建该目录 File dirFile = new File(dbDir); if (!dirFile.exists()) dirFile.mkdirs(); // 数据库文件是否创建成功 boolean isFileCreateSuccess = false; // 判断文件是否存在,不存在则创建该文件 File dbFile = new File(dbPath); if (!dbFile.exists()) { try { isFileCreateSuccess = dbFile.createNewFile();// 创建文件 } catch (IOException e) { e.printStackTrace(); } } else isFileCreateSuccess = true; // 返回数据库文件对象 if (isFileCreateSuccess) return dbFile; else return super.getDatabasePath(name); } } /** * 重载这个方法,是用来打开SD卡上的数据库的,android 2.3及以下会调用这个方法。 * * @param name * @param mode * @param factory */ @Override public SQLiteDatabase openOrCreateDatabase(String name, int mode, CursorFactory factory) { return SQLiteDatabase.openOrCreateDatabase(getDatabasePath(name), null); } /** * Android 4.0会调用此方法获取数据库。 * * @see android.content.ContextWrapper#openOrCreateDatabase(java.lang.String, * int, * android.database.sqlite.SQLiteDatabase.CursorFactory, * android.database.DatabaseErrorHandler) * @param name * @param mode * @param factory * @param errorHandler */ @Override public SQLiteDatabase openOrCreateDatabase(String name, int mode, CursorFactory factory, DatabaseErrorHandler errorHandler) { return SQLiteDatabase.openOrCreateDatabase(getDatabasePath(name), null); } }, "cmk.db", factory, SCHEMA_VERSION); } @Override public void onCreate(SQLiteDatabase db) { Log.i("greenDAO", "Creating tables for schema version " + SCHEMA_VERSION); createAllTables(db, false); } } /** WARNING: Drops all table on Upgrade! Use only during development. */ public static class DevOpenHelper extends OpenHelper { public DevOpenHelper(Context context, String name, CursorFactory factory) { super(context, name, factory); } @Override public void onUpgrade(SQLiteDatabase db, int oldVersion, int newVersion) { Log.i("greenDAO", "Upgrading schema from version " + oldVersion + " to " + newVersion + " by dropping all tables"); dropAllTables(db, true); onCreate(db); } } public DaoMaster(SQLiteDatabase db) { super(db, SCHEMA_VERSION); registerDaoClass(SiteDao.class); registerDaoClass(ResourceDao.class); registerDaoClass(ComicDao.class); } public DaoSession newSession() { return new DaoSession(db, IdentityScopeType.Session, daoConfigMap); } public DaoSession newSession(IdentityScopeType type) { return new DaoSession(db, type, daoConfigMap); } }
Android greenDAO数据库设置在SD卡的方法
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转载自www.cnblogs.com/zhujiabin/p/9105555.html
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