ios7 uiimageview

- (void)viewDidLoad{
    [super viewDidLoad];
    
    UIImage *macBookAir = [UIImage imageNamed:@"MacBookAir"];
    //bounds
    self.myImageView = [[UIImageView alloc] initWithFrame:self.view.bounds];
    //保持长宽比的大小选择规模内容视图,任何剩余的视图区域的边界是透明的。
    self.myImageView.contentMode = UIViewContentModeScaleAspectFit;
    //image设置成macBookAir
    self.myImageView.image = macBookAir;
    //剧中
    self.myImageView.center = self.view.center;
    //添加到view
    [self.view addSubview:self.myImageView];
}