2014/10/16 上午 08:14:15

android Programming Glossary: getwritabledatabase

Exception: attempt to acquire a reference on a close SQLiteClosable

http://stackoverflow.com/questions/1483629/exception-attempt-to-acquire-a-reference-on-a-close-sqliteclosable

objects. Instead use a SQLiteOpenHelper and call getWritableDatabase every time you need one. From the docs public synchronized SQLiteDatabase.. need one. From the docs public synchronized SQLiteDatabase getWritableDatabase Create and or open a database that will be used for reading..

Android SQLite database: slow insertion

http://stackoverflow.com/questions/3501516/android-sqlite-database-slow-insertion

in an SQLite database using calls similar to the following getWritableDatabase .insert TABLE_NAME _id values . All of this together takes about..

Android: simple export and import of sqlite database

http://stackoverflow.com/questions/6540906/android-simple-export-and-import-of-sqlite-database

so SQLiteHelper will cache it and mark it as created. getWritableDatabase .close return true return false FileUtils public class FileUtils..

SQLiteOpenHelper - creating database on SD card

http://stackoverflow.com/questions/7229450/sqliteopenhelper-creating-database-on-sd-card

return database public SQLiteDatabase getWritableDatabase database SQLiteDatabase.openDatabase DATABASE_FILE_PATH File.separator..

Why is onUpgrade() not being invoked on Android sqlite database?

http://stackoverflow.com/questions/7647566/why-is-onupgrade-not-being-invoked-on-android-sqlite-database

public DbHelper open throws SQLException myDataBase getWritableDatabase Log.d TAG DbHelper Opening Version this.myDataBase.getVersion.. This is a code snippet from the source of SQLiteOpenHelper.getWritableDatabase int version db.getVersion if version mNewVersion db.beginTransaction.. the onCreate or onUpgrade are called within the call to getWritableDatabase . You have to use these calls whenever you need an instance..

SQLite exception: Database is locked issue

http://stackoverflow.com/questions/7657223/sqlite-exception-database-is-locked-issue

mDbHelper new DatabaseHelper mCtx mDb mDbHelper.getWritableDatabase return this public void close mDbHelper.close ... I'm getting.. Context mContext synchronized Lock SQLiteDatabase db getWritableDatabase db.delete TABLE_NAME null null db.close public void insert.. public void insert synchronized Lock SQLiteDatabase db getWritableDatabase db.insert TABLE_NAME ... ... db.close Example 2 public class..

Exception: attempt to acquire a reference on a close SQLiteClosable

http://stackoverflow.com/questions/1483629/exception-attempt-to-acquire-a-reference-on-a-close-sqliteclosable

I have found is fairly simple don't keep references to SQLiteDatabase objects. Instead use a SQLiteOpenHelper and call getWritableDatabase every time you need one. From the docs public synchronized SQLiteDatabase getWritableDatabase Create and or open a database.. and call getWritableDatabase every time you need one. From the docs public synchronized SQLiteDatabase getWritableDatabase Create and or open a database that will be used for reading and writing. Once opened successfully the database is cached..

Android SQLite database: slow insertion

http://stackoverflow.com/questions/3501516/android-sqlite-database-slow-insertion

with a 152KB file. During parsing I also insert the data in an SQLite database using calls similar to the following getWritableDatabase .insert TABLE_NAME _id values . All of this together takes about 80 seconds for the 152KB test file which comes down to..

Android: simple export and import of sqlite database

http://stackoverflow.com/questions/6540906/android-simple-export-and-import-of-sqlite-database

newDb new FileOutputStream oldDb Access the copied database so SQLiteHelper will cache it and mark it as created. getWritableDatabase .close return true return false FileUtils public class FileUtils Creates the specified code toFile code as a byte for byte..

SQLiteOpenHelper - creating database on SD card

http://stackoverflow.com/questions/7229450/sqliteopenhelper-creating-database-on-sd-card

File.separator DATABASE_NAME null SQLiteDatabase.OPEN_READONLY return database public SQLiteDatabase getWritableDatabase database SQLiteDatabase.openDatabase DATABASE_FILE_PATH File.separator DATABASE_NAME null SQLiteDatabase.OPEN_READWRITE..

Why is onUpgrade() not being invoked on Android sqlite database?

http://stackoverflow.com/questions/7647566/why-is-onupgrade-not-being-invoked-on-android-sqlite-database

data context.getApplicationContext .getPackageName databases public DbHelper open throws SQLException myDataBase getWritableDatabase Log.d TAG DbHelper Opening Version this.myDataBase.getVersion return this @Override public synchronized void close if myDataBase.. android sqlite share improve this question This is a code snippet from the source of SQLiteOpenHelper.getWritableDatabase int version db.getVersion if version mNewVersion db.beginTransaction try if version 0 onCreate db else if version mNewVersion.. finally db.endTransaction onOpen db As you can see the onCreate or onUpgrade are called within the call to getWritableDatabase . You have to use these calls whenever you need an instance of SQLiteDatabase . You shouldn't use your own methods except..

SQLite exception: Database is locked issue

http://stackoverflow.com/questions/7657223/sqlite-exception-database-is-locked-issue

mDb public WordDBAdapter open throws android.database.SQLException mDbHelper new DatabaseHelper mCtx mDb mDbHelper.getWritableDatabase return this public void close mDbHelper.close ... I'm getting the following exceptions which are similar but have a different.. static final String TABLE_NAME table_name public void delete Context mContext synchronized Lock SQLiteDatabase db getWritableDatabase db.delete TABLE_NAME null null db.close public void insert synchronized Lock SQLiteDatabase db getWritableDatabase db.insert.. getWritableDatabase db.delete TABLE_NAME null null db.close public void insert synchronized Lock SQLiteDatabase db getWritableDatabase db.insert TABLE_NAME ... ... db.close Example 2 public class DB public static String Lock dblock private static final..