UIImageView's on a UIView Layer, wrong frame output

I am trying to combine 2 UIImageViews and save them as 1. The top-most image is a static "frame", and the lower image is rotatable / scalable.

My issue is that the photo needs to be saved as 640 x 960, however, the actual view that the 2 images sit on is 320 x 480 (so it shows correctly on the users screen). When these 2 images are combined, they are saved on a 640 x 960 view, however, the 2 images themselves are combined as 320 x 480 (as seen in the image example below).

Here is the code that I am currently using to get my wrong results.

CGSize deviceSpec;
if ( IDIOM == IPAD ) { deviceSpec =CGSizeMake(768,1024); } else { deviceSpec =CGSizeMake(640,960); }
UIGraphicsBeginImageContext( deviceSpec );

    UIView * rendered = [[UIView alloc] init];
    [[rendered layer] setFrame:CGRectMake(0,0,deviceSpec.width,deviceSpec.height)];
    [[rendered layer] addSublayer:[self.view layer]];
    [[rendered layer] renderInContext:UIGraphicsGetCurrentContext()];

    UIImage * draft = UIGraphicsGetImageFromCurrentImageContext();

UIGraphicsEndImageContext();

AssetsLibrary

Should also mention I am saving the image using the following:

ALAssetsLibrary * library = [[[ALAssetsLibrary alloc] init] autorelease];
[library writeImageToSavedPhotosAlbum: draft.CGImage orientation:ALAssetOrientationUp 
                      completionBlock: ^(NSURL *assetURL, NSError *error)  
 {
     if (error) {
         NSLog(@"ALAssetLibrary error - %@", error);
     } else {
         NSLog(@"Image saved: %@", assetURL);
     }
 }];

The output

Note here, the entire white area is actually 640 x 960 and the 2 images are 320 x 480开发者_如何转开发.

Note: The actual image here is 640x960 (the entire area), where as the actual image (the photo) is 320x480 which is the actual size of the original layers frame.

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To support different scales I used the following code to:

// If you specify a value of 0.0, the scale factor is set to the scale factor of the device’s main screen. 
UIGraphicsBeginImageContextWithOptions(compositeView.frame.size, compositeView.opaque, scale);
[compositeView.layer renderInContext:UIGraphicsGetCurrentContext()];
UIImage *image = UIGraphicsGetImageFromCurrentImageContext();
UIGraphicsEndImageContext();

So, you need to replace UIGraphicsBeginImageContext with UIGraphicsBeginImageContextWithOptions