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我在更新数据库时遇到了一些问题。

这是日志：

12-02 16:18:57.502: D/Data Update(21218): Start updating databases
12-02 16:18:57.502: D/Data Update(21218): update size: 5
12-02 16:18:57.502: D/Data Update(21218): updating table cemeteries
12-02 14:28:51.877: I/SqliteDatabaseCpp(18826): sqlite returned: error code = 1802, msg = statement aborts at 13: [INSERT OR REPLACE  INTO cemeteries(id,name) VALUES (?,?)] , db=/data/data/de.l_one.app.shaufelv14/databases/poidatabase
12-02 14:28:51.877: E/SQLiteStatementCpp(18826): native_execute (step): errno = 2, error message = No such file or directory, handle = 0xdc0b70
12-02 14:28:51.877: I/SqliteDatabaseCpp(18826): sqlite returned: error code = 1, msg = statement aborts at 2: [COMMIT;] cannot commit - no transaction is active, db=/data/data/de.l_one.app.shaufelv14/databases/poidatabase
12-02 14:28:51.887: E/Data Update(18826): Update failed
12-02 14:28:51.887: E/Data Update(18826): android.database.sqlite.SQLiteException: cannot commit - no transaction is active
12-02 14:28:51.887: E/Data Update(18826):   at android.database.sqlite.SQLiteStatement.native_executeSql(Native Method)
12-02 14:28:51.887: E/Data Update(18826):   at android.database.sqlite.SQLiteStatement.executeUpdateDelete(SQLiteStatement.java:90)
12-02 14:28:51.887: E/Data Update(18826):   at android.database.sqlite.SQLiteDatabase.executeSql(SQLiteDatabase.java:2006)
12-02 14:28:51.887: E/Data Update(18826):   at android.database.sqlite.SQLiteDatabase.execSQL(SQLiteDatabase.java:1946)
12-02 14:28:51.887: E/Data Update(18826):   at android.database.sqlite.SQLiteDatabase.endTransaction(SQLiteDatabase.java:764)
12-02 14:28:51.887: E/Data Update(18826):   at android.database.sqlite.SQLiteStatement.releaseAndUnlock(SQLiteStatement.java:273)
12-02 14:28:51.887: E/Data Update(18826):   at android.database.sqlite.SQLiteStatement.executeInsert(SQLiteStatement.java:115)
12-02 14:28:51.887: E/Data Update(18826):   at android.database.sqlite.SQLiteDatabase.insertWithOnConflict(SQLiteDatabase.java:1807)
12-02 14:28:51.887: E/Data Update(18826):   at de.l_one.app.shaufelv14.DataUpdater.update(DataUpdater.java:102)
12-02 14:28:51.887: E/Data Update(18826):   at de.l_one.app.shaufelv14.MainActivity$5.run(MainActivity.java:104)

这是我用来插入新数据的代码：

int updateSize = 0;

// cvs is an ArrayList<ContentValues> array with each entry holding 
// the new values for a certain table
// I know I could use a Map but let's change one thing after another

for(ArrayList<ContentValues> list : cvs)
    updateSize += list.size();

Log.d(DEBUG_TAG, "Start updating databases");
Log.d(DEBUG_TAG, "update size: "+updateSize);

if(updateSize > 0) {

    dbHelper = ShaufelDatabaseHelper.getInstance(context);
    connection = dbHelper.getWritableDatabase();

    for(int i=0; i<cvs.length; i++) {
        String table;
        switch(i) {
            case 0: table = "cemeteries"; break;
            case 1: table = "customers"; break;
            case 2: table = "graves"; break;
            case 3: table = "orders"; break;
            case 4: table = "plants"; break;
            case 5: table = "plantevents"; break;
            case 6: table = "services"; break;
            case 7: table = "serviceevents"; break;
            default: throw new RuntimeException("wtf");
        }
        Log.d(DEBUG_TAG, "updating table "+table);

        for(ContentValues cv: cvs[i]) {
            // replace updated values, insert new ones
            connection.insertWithOnConflict(table, null, cv, SQLiteDatabase.CONFLICT_REPLACE);
        }
    }
}

奇怪的是，不是每次都抛出异常。它更像是这样的：

如果您启动应用程序并登录，则更新工作。如果您随后注销并重新登录（不关闭应用程序），更新会再次发生，但这次出现异常。
如果您关闭应用程序（不仅仅是按 home，而是强制关闭 android 系统），它将再次工作，直到您注销并重新登录。
更新都包含相同的数据（我们目前正在测试这些东西）并且它由相同的代码，但它只工作了一半。

这是在 HTC Sensation 上的 Android 4.0.3 上运行的。

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1 回答 1

1

1802is SQLITE_IOERR_FSTAT，当连接仍处于打开状态时删除数据库文件时会发生这种情况。

您是否在更新中进行任何类型的文件删除？

于 2012-12-02T21:29:24.643 回答