如何在ipad中设置tile imageview的帧

Question

我正在为iPad开发一个图像拼图应用程序。我成功地将图像分割成不同的图像 部件，当我在瓷砖视图中加入所有图像时，我得到iPhone尺寸的框架，对于高清图像，整个屏幕将被框架占用。所以我希望iPad中的所有图像都有一个固定大小的框架。我正在使用以下代码来分割图像并将它们放回到平铺视图中。

tileWidth = orgImage.size.width/NUM_HORIZONTAL_PIECES;
tileHeight = orgImage.size.height/NUM_VERTICAL_PIECES;

blankPosition = CGPointMake( NUM_HORIZONTAL_PIECES-1, NUM_VERTICAL_PIECES-1 );

for( int x=0; x<NUM_HORIZONTAL_PIECES; x++ )
{
    for( int y=0; y<NUM_VERTICAL_PIECES; y++ )
    {
        CGPoint orgPosition = CGPointMake(x,y);

        if( blankPosition.x == orgPosition.x && blankPosition.y == orgPosition.y )
        {
            continue;
        }

        CGRect frame = CGRectMake(tileWidth*x,tileHeight*y,tileWidth,tileHeight);
        CGImageRef tileImageRef = CGImageCreateWithImageInRect( orgImage.CGImage,frame );
        UIImage *tileImage = [UIImage imageWithCGImage:tileImageRef];

        CGRect tileFrame =  CGRectMake((tileWidth+TILE_SPACING)*x,(tileHeight+TILE_SPACING)*y,tileWidth,tileHeight );

        tileImageView = [[Tile alloc] initWithImage:tileImage];
        tileImageView.frame = tileFrame;
        tileImageView.originalPosition = orgPosition;
        tileImageView.currentPosition = orgPosition;
        CGImageRelease( tileImageRef );
        [tiles addObject:tileImageView];
        [tileImageView setUserInteractionEnabled:NO];
        // now add to view
        //[self.view insertSubview:tileImageView atIndex:0];
        [self.view addSubview:tileImageView];
    }
}
[self shuffle];
}