iOS - save image in jpg format

Question

My question is what format the image is saved, if is dat or jpg. This is the code that i used:

    NSString * urlImage = .....;
    NSString * _folderPath =          


        

Answer 1

Following is piece of code for save .jpg image

NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory,NSUserDomainMask, YES);
NSString *docs = [paths objectAtIndex:0];
NSString* path =  [docs stringByAppendingFormat:@"/image1.jpg"];

NSData* imageData = [NSData dataWithData:UIImageJPEGRepresentation(imageView.image, 80)];
NSError *writeError = nil;
[imageData writeToFile:path options:NSDataWritingAtomic error:&writeError];