[self setBackgroundColor:[UIColor lightGrayColor]];
- 自己设定颜色
// R: 128 G: 90 B: 200
UIColor *myColor = [UIColor colorWithRed:(128.0 / 255.0) green:(90.0 / 255.0) blue:(200.0 / 255.0) alpha:1];
- 自己设定背景图
self.view.backgroundColor = [[UIColor alloc] initWithPatternImage:[UIImageimageNamed:@"whiteBackground.png"]];