IOS 设置View背景色

UIImageView *imgView = [[UIImageView alloc] initWithImage:[UIImage imageNamed:@"01首页.png"]];

imgView.frame = self.view.bounds;

imgView.autoresizingMask = UIViewAutoresizingFlexibleWidth;

[self.view insertSubview:imgView atIndex:0];

或者在viewDidload使用

self.view.backgroundColor = [UIColor colorWithPatternImage:[UIImageimageNamed imageNamed:@"instrument_bg"]];