一个诡异的有关问题

一个诡异的问题
@interface UIView (Zoom)


-(void)viewZoomMaxBounds:(CGRect) maxBounds minBounds:(CGRect) minBounds finallyBounds:(CGRect) finallyBounds;


@end






#import "UIView+Zoom.h"


@implementation UIView (Zoom)


-(void)viewZoomMaxBounds:(CGRect)maxBounds minBounds:(CGRect) minBounds finallyBounds:(CGRect)finallyBounds
{
  [UIView animateWithDuration:0.3f animations:^{
  self.bounds=maxBounds;
  } completion:^(BOOL finished){
  [UIView animateWithDuration:0.1f animations:^{
  self.bounds=minBounds;
  } completion:^(BOOL finished){
  [UIView animateWithDuration:0.05f animations:^{
  self.bounds=finallyBounds;
  }completion:^(BOOL finished){
  [[NSNotificationCenter defaultCenter] postNotificationName:@"finished" object:nil];
  }];

  }];
  }];
}


@end




这是我写的一个category 增加uiview一个动画功能


  registerView=[[RegisterView alloc] initWithFrame:CGRectMake(160, 197, 0, 0)];
NSLog(@"1:%i",registerView.retainCount);
registerView.delegate=self;
registerView.backgroundColor=[UIColor blackColor];
  [self.view addSubview:registerView];
NSLog(@"2:%i",registerView.retainCount);
  [registerView viewZoomMaxBounds:CGRectMake(0, 0, 320, 394) minBounds:CGRectMake(0, 0, 290, 360) finallyBounds:CGRectMake(0, 0, 300, 380)];
NSLog(@"3:%i",registerView.retainCount);
  [registerView release];
NSLog(@"4:%i",registerView.retainCount);
  [super viewDidAppear:animated];


这个是代码中的调用 先是创建一个view  
可是调用了红色代码以后retaincount加一了，不知道为什么？ 求高手指点
[registerView viewZoomMaxBounds:CGRectMake(0, 0, 320, 394) minBounds:CGRectMake(0, 0, 290, 360) finallyBounds:CGRectMake(0, 0, 300, 380)];

------解决方案--------------------
估计是在执行过程中所调用的方法执行了retain，然后又autorelease了吧，所以在当前方法完成前，你会发现多了一个retain计数，但实际上并没有什么影响。