代码保存

- (CGRect)srandomRect

{

   CGRect rect;

   CGRect rect1 = CGRectMake(60, 80, 80, 40);

   CGRect rect2 = CGRectMake(160, 90, 80, 40);

   CGRect rect3 = CGRectMake(50, 130, 80, 40);

   CGRect rect4 = CGRectMake(200, 150, 80, 40);

   CGRect rect5 = CGRectMake(30, 170, 80, 40);

   CGRect rect6 = CGRectMake(120, 200, 80, 40);

   CGRect rect7 = CGRectMake(40, 230, 80, 40);

   CGRect rect8 = CGRectMake(170, 250, 80, 40);

   CGRect rect9 = CGRectMake(10, 290, 80, 40);

   CGRect rect10 = CGRectMake(100, 290, 80, 40);

   CGRect rect11 = CGRectMake(210, 320, 80, 40);

   CGRect rect12 = CGRectMake(35, 350, 80, 40);

   CGRect rect13 = CGRectMake(135, 380, 80, 40);

   CGRect rect14 = CGRectMake(45, 380, 80, 40);

   CGRect rect15 = CGRectMake(180, 350, 80, 40);

   CGRect rect16 = CGRectMake(55, 3900, 80, 40);

   CGRect rect17 = CGRectMake(210, 70, 80, 40);

   CGRect rect18 = CGRectMake(200, 200, 80, 40);

    rectArr = [NSMutableArrayarrayWithObjects:[NSValuevalueWithCGRect:rect1],[NSValuevalueWithCGRect:rect2],[NSValuevalueWithCGRect:rect3],[NSValuevalueWithCGRect:rect4],[NSValuevalueWithCGRect:rect5],[NSValuevalueWithCGRect:rect6],[NSValuevalueWithCGRect:rect7],[NSValuevalueWithCGRect:rect8],[NSValuevalueWithCGRect:rect9],[NSValuevalueWithCGRect:rect10],[NSValuevalueWithCGRect:rect11],[NSValuevalueWithCGRect:rect12],[NSValuevalueWithCGRect:rect13],[NSValuevalueWithCGRect:rect14],[NSValuevalueWithCGRect:rect15],[NSValuevalueWithCGRect:rect16],[NSValuevalueWithCGRect:rect17],[NSValuevalueWithCGRect:rect18], nil];

   int ran = arc4random()%18;

   for (int i= 0; i<18; i++) {

       if (ran == i) {

            rect =  [[rectArrobjectAtIndex:i] CGRectValue];

            NSLog(@"srandom rect -------  %d",i);

        }

    }

   return rect;

}