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我們正在使用設置背景圖片的基類。該代碼看起來像:在viewDidLoad中的子類中設置不同的背景圖像
UIImage* image = [UIImage imageNamed:@"App_Background.png"];
UIImageView *imageView = [[UIImageView alloc] initWithImage:image];
imageView.contentMode = UIViewContentModeScaleAspectFill;
CGRect bounds = self.view.bounds;
int offset = 0;
imageView.frame = CGRectMake(0, bounds.size.height - image.size.height + offset, image.size.width, image.size.height);
imageView.autoresizingMask = UIViewAutoresizingFlexibleTopMargin;
imageView.tag = BACKGROUND_TAG;
[self.view insertSubview:imageView atIndex:0]; // insert it behind all other views in NIB
self.background = [imageView autorelease]; // cleanup
如果我想用這個作爲我的超另一UIViewController的,但不希望使用backgound,我該怎麼辦呢?我認爲我可以在我的子類中做到這一點'viewDidLoad:
UIView *theBackgroundView = [self.view viewWithTag:BACKGROUND_TAG ];
theBackgroundView = nil;
但是這並不奏效。有什麼想法嗎?謝謝。