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POResolution changed after saving a image using CoreData
 

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  1. POResolution changed after saving a image using CoreData
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    <p>I have the following code below. Firstly, in the table detail view, i capture or load a image(the size of the image is about 1/4 of the screen), then after saving the image will be shown at the UITableView. Everything seems going well so far. However, when i press the UITable and try to load the detail page again. The resolution of the image becomes lowered. I guess is the same size as the one at the TableView. May I know what can i do in order to fix this problem? </p> <p>Thanks.</p> <pre><code> -(void) ViewDidLoad{ if ([currentPicture smallPicture]) [imageField setImage:[UIImage imageWithData:[currentPicture smallPicture]]]; } - (IBAction)editSaveButtonPressed:(id)sender { // If we are adding a new picture (because we didnt pass one from the table) then create an entry if (!currentPicture) self.currentPicture = (Pictures *)[NSEntityDescription insertNewObjectForEntityForName:@"Pictures" inManagedObjectContext:self.managedObjectContext]; if (imageField.image) // Resize and save a smaller version for the table float resize = 74.0; float actualWidth = imageField.image.size.width; float actualHeight = imageField.image.size.height; float divBy, newWidth, newHeight; if (actualWidth &gt; actualHeight) { divBy = (actualWidth / resize); newWidth = resize; newHeight = (actualHeight / divBy); } else { divBy = (actualHeight / resize); newWidth = (actualWidth / divBy); newHeight = resize; } CGRect rect = CGRectMake(0.0, 0.0, newWidth, newHeight); UIGraphicsBeginImageContext(rect.size); [imageField.image drawInRect:rect]; UIImage *smallImage = UIGraphicsGetImageFromCurrentImageContext(); UIGraphicsEndImageContext(); // Save the small image version NSData *smallImageData = UIImageJPEGRepresentation(smallImage, 1.0); [self.currentPicture setSmallPicture:smallImageData]; } </code></pre>
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    1. PO
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      1. PTAnswer
    1. This table or related slice is empty.
    1. PTQuestion
    1. USClarence
    1. USClarence
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    1. This table or related slice is empty.
    1. This table or related slice is empty.
    1. This table or related slice is empty.
    1. PO
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    2. PO
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    1. This table or related slice is empty.
    1. COHave you tried logging the sizes of the image before you save it and after you load it?
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      1. USEmilioPelaez
    2. COI don't think i have. I got the code from some sample projects. I am not sure how to do it. Thanks
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      1. POResolution changed after saving a image using CoreData
      1. USClarence
 

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