![]() ![]() ![]() Completely null values are not allowed by the nullColumnHack. The table name is specified by the table. Long insert(String table, String nullColumnHack, ContentValues values) To execute the sql query not select query. Some of the important methods of the SQLiteDatabase class are: Method The SQLiteDatabase class has many methods. The methods like create, update, delete, select, etc, that are performed on the SQLite database are included in the SQLiteDatabase class. To be called when the database needs to be downgraded. Public void onDowngrade(SQLiteDatabase db, int oldVersion, int newVersion) To be called when the database needs to be upgraded. Public abstract void onUpgrade(SQLiteDatabase db, int oldVersion, int newVersion) ![]() To be called when the database is created for the first time. Public abstract void onCreate(SQLiteDatabase db) Some of the important methods of the SQLiteOpenHelper class are: Method ![]() The SQLiteOpenHelper class has many methods. To create an object that can create, open and manage the database, and to also specify the error handler. SQLiteOpenHelper(Context context, String name, SQLiteDatabase.CursorFactory factory, int version, DatabaseErrorHandler errorHandler) To create an object that can create, open and manage the database. SQLiteOpenHelper(Context context, String name, SQLiteDatabase.CursorFactory factory, int version) The SQLiteOpenHelper class has two constructors. The implementation of onCreate() and onUpgrade() methods of SQLiteOpenHelper class is required to be provided to perform any database operation. If you use the unit FMX.Types in your service-units, it will crash also.The functionality to use the SQLite database is provided by the class which is used for database creation and version management. FlatFile Īgain one note for others having also problems with Rio + Android + Service not starting: PSD_Db_Abstract, PSDConstants, tiConsts, PSDLogEvent, PSDLogDrivers, PSDConnectivityStatus, Data. Math, StringFunctions, TineInterfaces, TineClasses, PSDResourcePool, Generics. Use PSD_db_FireDAC_MSSQL and PSD_db_FireDAC_PostgreSQL units interface Unit PSD_db_FireDAC /// Generic FireDAC wrapper. Our FireDAC helper unit uses that to handle Windows services and other console apps. I've seen this before on Windows - but didn't make the connection this time, if you pardon the pun.ĭoes an Android service have a Console define? Thanks for sharing the root cause! Such mysteries can be so hard to track down! Using your used units solved all hangers + i have removed the datamodule-unit and restclient-unit also from project files.Įverything is now working for some minutes without problems, very coool If i compare your project with mine the difference is:į,, , FireDAC.UI.Intf,, ,į,, FireDAC.Phys,, ,, ,į, FireDAC.DatS,, FireDAC.DApt, Data.DB,, ,į,, FireDAC.Phys,, ,, ,į, FireDAC.DatS,, FireDAC.DApt, Data.DB, , , Thanks a lot for this change in your demo. Service starts OK in it, at least for me.ĭave, you're the "Killer". I've just checked in changes to this demo that include posting the location updates to a SQLite database. Seems that the problem is connected with tDatamodule? Dont know really. if i change the project file and remove the units for tDatamodule than i can create components at runtime within tServiceModule and it works !! if i create the tsqlconnection and a tsqltable directly within the tServiceModule at runtime and add the needed units (see 2.) to interface-uses than it hangsĥ. but remote the units " Data.DbxSqlite, Data.FMTBcd, Data.DB, Data.SqlExpr " from interface-uses than it hangsĤ. If i let the unit in implementation uses and delete the tfdconnection/tsqlconnection from datamodule but let the interface-uses: Data.DbxSqlite, Data.FMTBcd, Data.DB, Data.SqlExpr than it hangs!ģ. if i remove the unit from implementation uses where tDatamodule with tsqlconnection / tfdconnection is, than the app and service starts.Ģ. I configure and connect the connection at runtime after the service starts up. Have you tried to delete all Tfdconnection and Tsqlconnection? Still does not start?ĭo you open Tfdconnection at runtime after the service start-up? Or it's set active at design time? ![]()
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