Sqlite inserts get lost after app restart

Question

This is the insert code. It works fine until i close the app and start it again, then all changes are gone. I don\'t see any error, could it be some iphone specific issue?

Answer 1

To write your DB to file manager:

NSFileManager *fileManager = [NSFileManager defaultManager];
    NSError *error;
    NSString *dbPath = [self getDatabasePath];
    BOOL success = [fileManager fileExistsAtPath:dbPath]; 

    if(!success) {

        NSString *defaultDBPath = [[[NSBundle mainBundle] resourcePath] stringByAppendingPathComponent:@"yourDB.sqlite"];
        success = [fileManager copyItemAtPath:defaultDBPath toPath:dbPath error:&error];

        if (!success) 
            NSAssert1(0, @"Failed to create writable database file with message '%@'.", [error localizedDescription]);
    }

To fetch your DB from file manager:

NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory , NSUserDomainMask, YES);
    NSString *documentsDir = [paths objectAtIndex:0];
    return [documentsDir stringByAppendingPathComponent:@"yourDB.sqlite"];

By this way your changes will be saved, next time you open your DB. I would rather suggest use FMDatabase wrapper, written in Obj C over sqlite. Here is the link for FMDatabase: http://code.google.com/p/flycode/source/browse/trunk/fmdb

hope it helps!!