关于NavigationItem.rightBarButtonItem设置

 

转自：http://blog.csdn.net/zhuzhihai1988/article/details/7701998

第一种：

 

 

 

UIImage *searchimage=[UIImage imageNamed:@"search.png"];

 

    UIBarButtonItem *barbtn=[[UIBarButtonItem alloc] initWithImage:nil style:UIBarButtonItemStyleDone target:self action:@selector(searchprogram)];    

 

    barbtn.image=searchimage;

 

    self.navigationItem.rightBarButtonItem=barbtn;

这种设置出来的外观不好控制

第二种：

 

 

 

UIButton*rightButton = [[UIButtonalloc]initWithFrame:CGRectMake(0,0,30,30)];

 

    [rightButtonsetImage:[UIImageimageNamed:@"search.png"]forState:UIControlStateNormal];

 

    [rightButtonaddTarget:selfaction:@selector(searchprogram)forControlEvents:UIControlEventTouchUpInside];

 

   UIBarButtonItem*rightItem = [[UIBarButtonItemalloc]initWithCustomView:rightButton];

 

    [rightButton release];

 

   self.navigationItem.rightBarButtonItem= rightItem;

 

    [rightItem release];

 

这种图片将填满button，大小可控

 

第三种：

 

UIBarButtonItem *anotherButton = [[UIBarButtonItem alloc] initWithBarButtonSystemItem:UIBarButtonSystemItemBookmarks target:self action:@selector(methodtocall:) ]; 

 

如何让navigationItem.rightBarButtonItem隐藏消失？

 

self.navigationItem.rightBarButtonItem=nil；

 

即可实现