如何将图像设置为UIView的背景但缩放正确？

Question

I would like the user to be able to select a image from their photos and set it to the background of the main view.

This is what I'm currently doing:

- (void)imagePickerController:(UIImagePickerController *)picker didFinishPickingMediaWithInfo:(NSDictionary *)info {
    [picker dismissModalViewControllerAnimated:YES];

    UIImage *testimg = [info objectForKey:UIImagePickerControllerOriginalImage];

    NSArray  * sysPaths = NSSearchPathForDirectoriesInDomains( NSDocumentDirectory, NSUserDomainMask, YES );

    filePath = [[NSString alloc] initWithFormat: @"%@/%@", [sysPaths objectAtIndex: 0], @"testimg.png"];
    if ( [UIImagePNGRepresentation ( testimg) writeToFile:filePath atomically:YES] )    ;

    self.backgroundColor= [[UIColor alloc] initWithPatternImage:[[UIImage alloc] initWithContentsOfFile: filePath]];


     }

Aside from this method being a bit sluggish in speed, this works great! There is one problem though. When the image is selected the image is not scaled properly. How would I get around this?

Thanks in advance,

-David

Answer 1

Have a look at UIImageView in particular the contentMode property.

imageView.contentMode = UIViewContentModeScaleAspectFit;