在升级方法我重命名我的数据库和从资产文件夹复制新的数据库。Android Attach数据库onupgrade锁数据库
但在附加声明它抛出的“数据库锁定(代码)5”
@Override
public void onUpgrade(SQLiteDatabase db, int oldVersion, int newVersion) {
if(oldVersion<newVersion){
db.close();
/**
* Renaming Database from Databse path
*
*/
new File(Constants.DATABASE_PATH+Constants.DATABSE_NAME).renameTo(new File(Constants.DATABASE_PATH+Constants.DATABASE_NAME_RENAME));
boolean mm = checkDataBase(Constants.DATABSE_NAME);
boolean up = checkDataBase(Constants.DATABASE_NAME_RENAME);
try {
copyDataBase();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
boolean dbmm = checkDataBase(Constants.DATABSE_NAME);
boolean dbup = checkDataBase(Constants.DATABASE_NAME_RENAME);
try{
String path = Constants.DATABASE_PATH+Constants.DATABSE_NAME;
db = SQLiteDatabase.openDatabase(path, null, SQLiteDatabase.OPEN_READWRITE);
File dbFile=myContext.getDatabasePath(Constants.DATABSE_NAME);
异常在低于它抛出数据库锁(代码5)厚望的线。
db.execSQL(String.format("ATTACH DATABASE '%s' AS BACKUP;",
dbFile,null));
db.execSQL("INSERT INTO "+Constants.COMPANY_TABLE_NAME+" SELECT * FROM BACKUP."+Constants.COMPANY_TABLE_NAME);
db.execSQL("INSERT INTO "+Constants.PAGE_TABLE_NAME+" SELECT * FROM BACKUP."+Constants.PAGE_TABLE_NAME);
db.execSQL("INSERT INTO "+Constants.BOOKMARK_TABLE_NAME+" SELECT * FROM BACKUP."+Constants.BOOKMARK_TABLE_NAME);
db.execSQL("INSERT INTO "+Constants.CATALOG_TABLE_NAME+" SELECT * FROM BACKUP."+Constants.CATALOG_TABLE_NAME);
db.execSQL("INSERT INTO "+Constants.Order_Items_TABLE_NAME+" SELECT * FROM BACKUP."+Constants.Order_Items_TABLE_NAME);
db.execSQL("INSERT INTO "+Constants.Order_TABLE_NAME+" SELECT * FROM BACKUP."+Constants.Order_TABLE_NAME);
db.execSQL(String.format("DETACH DATABASE '%s' ;",
"BACKUP",null));
db.close();
}catch(Exception e){
Log.e("Db", e+"");
}
}
}
请重新考虑你的方法 - 这在很多方面都被打破了。对于“资产数据库”问题,请考虑sqlite-asset-helper。 – laalto
我想这就像每个系统....你不能重新命名文件,而它打开... – Opiatefuchs
,但你看到我关闭数据库连接,然后重命名 –