Question
How can I insert a timestamp into a SQLite database using ContentValues in an Android application?
values.put("timestamp", System.currentTimeMillis());
Answer
Inserting a timestamp into a SQLite database in an Android application is straightforward using the ContentValues class. This class allows you to store key-value pairs where the key is the column name and the value is the data you want to insert. For timestamps, you can use the current time in milliseconds as the value, which SQLite can store as an INTEGER type.
ContentValues values = new ContentValues();
values.put("timestamp", System.currentTimeMillis());
database.insert("your_table_name", null, values);
Causes
- Incorrect column name specified in ContentValues.
- System time not retrieved properly using System.currentTimeMillis().
- Database not opened correctly before insertion.
Solutions
- Ensure the column name matches the database schema.
- Use System.currentTimeMillis() for a proper timestamp.
- Verify that the database is open and writable before insertion.
Common Mistakes
Mistake: Not handling potential database exceptions during insertion.
Solution: Wrap your database operations in a try-catch block to catch any SQLite exceptions.
Mistake: Forgetting to close the database after operations.
Solution: Always call database.close() to prevent memory leaks.
Helpers
- insert timestamp android
- ContentValues insert SQLite
- SQLite database timestamp
- Android database timestamp example
- System.currentTimeMillis()SQLite
