UIView作爲顏色傳奇？

Question

有沒有辦法讓UIView的顏色成爲圖例？這

兩個例子：

Answer 1

以及最簡單的是設置你的UIView爲圖像的背景...

self.view.backgroundColor = [[UIColor alloc] initWithPatternImage:[UIImage imageNamed:@"myimage.png"]]; 

Answer 2

好，你必須畫出它。使UIView一個子類，實現drawRect方法：

-(void)drawRect:(CGRect)dummy 
{ 
    for (int i = 0; i < NR_SEGMENTS; i++) 
    { 
     [[self colorForIndex:i] setFill]; 
     UIRectFill(CGRectMake(0, 0, 
           CGRectGetWidth(self.bounds)/NR_SEGMENTS, 
           CGRectGetHeight(self.bounds))); 
     CGContextTranslateCTM(UIGraphicsGetCurrentContext(), 
           CGRectGetWidth(self.bounds)/NR_SEGMENTS, 
           0); 
    } 
} 

colorForIndex:應該返回一些色彩。