实现右边的书签按钮：
1 UIBarButtonItem *anotherButton =
[[UIBarButtonItem alloc]
2
3 initWithBarButtonSystemItem:UIBarButtonSystemItemBookmarks target:self
4
5 action:@selector(methodtocall:) ];
6
7 self.navigationItem.rightBarButtonItem =
anotherButton; [anotherButton release];
8
9 //由于本地视图会retain它，所以我们可以release了。
10
转载于:https://www.cnblogs.com/w-zhijun/archive/2012/05/14/2499104.html
