ios 页面随机背景色

//随机色方法

- (UIColor *)randomColor

{

static BOOL seeded = NO;

if(!seeded) {

seeded = YES;

srandom((unsigned)time(NULL));

}

CGFloat red = (CGFloat)random()/(CGFloat)RAND_MAX;

CGFloat blue = (CGFloat)random()/(CGFloat)RAND_MAX;

CGFloat green = (CGFloat)random()/(CGFloat)RAND_MAX;

return [UIColor colorWithRed:red green:green blue:blue alpha:1.0f];

}

在用到背景色的地方直接调用就ok了！