Question

I am developing an app for iOS that uses SQLite3 database now i want to save some images in it, i have searched on net that people tells that it is not good idea to save images in SQLite3 like this one

Blob Data Type?

I am totally confuse that what to do so i am painting my whole situation in front of you please advice me what to do

i want to store 79 images in my SQLite database most of them are 2kb in size and very few are 20 to 25 kb totally all the images takes 384kb on disk so is it advisable to store all the images in my database or only use links in my database and filesystem for images

Please advise me as soon as possible

Answer 1

In my opinion Save imagePath in SQLite, and save image in your document directory. I do the same. May be this help you.

-(void)saveDataToDatabase:(NSString *)fileNameToSave
{

NSString *docsDir;
NSArray *dirPaths;
dirPaths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);

docsDir = [dirPaths objectAtIndex:0];
sqlite3_stmt    *statement;
NSString *databasePath = [[NSString alloc]
                          initWithString: [docsDir stringByAppendingPathComponent:
                                           @"scanner.db"]];

NSLog(@"%@",databasePath);

const char *dbpath = [databasePath UTF8String];

if (sqlite3_open(dbpath, &databaseHandle) == SQLITE_OK)
{
    NSString *insertSQL = [NSString stringWithFormat: @"Insert into IMAGEINFO (NAME,IMAGEPATH) values ('%@','%@')",@"imageFirst",fileNameToSave];
    const char *insert_stmt = [insertSQL UTF8String];
    sqlite3_prepare_v2(databaseHandle, insert_stmt, -1, &statement, NULL);
    if (sqlite3_step(statement) == SQLITE_DONE)
    {
        [[NSUserDefaults standardUserDefaults] setBool:YES forKey:@"database"];
    }
    else
    {
    }
}

}


-(void)saveImage:(NSString *)fileName:(UIImage *)imageToSave
{
NSError *error;
NSString *fileNaToSave = [NSString stringWithFormat:@"Documents/%@.png",fileName];
NSString  *pngPath = [NSHomeDirectory() stringByAppendingPathComponent:fileNaToSave];

// Write image to PNG
[UIImagePNGRepresentation(imageToSave) writeToFile:pngPath atomically:YES];
// Let's check to see if files were successfully written...
// You can try this when debugging on-device

// Create file manager
NSFileManager *fileMgr = [NSFileManager defaultManager];

// Point to Document directory
NSString *documentsDirectory = [NSHomeDirectory() stringByAppendingPathComponent:@"Documents"];

// Write out the contents of home directory to console
NSLog(@"Documents directory: %@", [fileMgr contentsOfDirectoryAtPath:documentsDirectory error:&error]);

}