ios 导航添加图片

```self.navigationItem.rightBarButtonItem= [[UIBarButtonItemalloc]initWithImage:[UIImageimageNamed:@"收藏次数_sel"]style:UIBarButtonItemStylePlaintarget:selfaction:@selector(clickRightBarButtonItem)];```

```self.navigationItem.rightBarButtonItem= [[UIBarButtonItemalloc]initWithImage:[UIImageimageNamed:@"收藏次数_sel"]style:UIBarButtonItemStylePlaintarget:selfaction:@selector(clickRightBarButtonItem)];```