iPhone设置视图背景图片的方法

方法一，使用一个UIImageView实例做子视图，并且放最后面

Objective-c代码

- (void)setBackgroundImage {   
    NSLog(@"setting bg image");   
    UIImageView *customBackground = [[UIImageView alloc] initWithImage:[UIImage imageNamed:@"background.jpg"]];   
    self.background = customBackground;   
    [customBackground release];   
       
    [self addSubview:background];   
    NSLog(@"Added background subview %@", background);   
    [self sendSubviewToBack:background];   
}  

方法二，Cook Book中提到的方法

Objective-c代码

- (void)loadView {   
       
    UIImageView *contentView = [[UIImageView alloc] initWithFrame:[[UIScreen mainScreen] applicationFrame]];   
    [contentView setImage:[UIImage imageNamed:@"Default.png"]];   
    [contentView setUserInteractionEnabled:YES];   
    self.view = contentView;   
    [contentView release];   
}  

方法三，lvyile网友用的一个小技巧，uiView是UIView的实例，而不是UIImageView

Objective-c代码

uiView.backgroundColor = [UIColor colorWithPatternImage:[UIImage imageNamed:@"Default.png"]];