定制UIBarButtonItem

 

在使用 UIBarButtonItem  系统提供的几个函数的时发现添加背景图片后会有个小框，而且很难去掉，影响效果，而且UIBarButtonItem好像不能使用frame  的属性，所以可以下面方法定制自己的UIBarButtonItem

1. UIImage* image= [UIImage imageNamed:@"绑定弹出－返回.png"]; 
2.         CGRect frame_1= CGRectMake(0, 0, image.size.width, image.size.height-4); 
3.         UIButton* backButton= [[UIButton alloc] initWithFrame:frame_1]; 
4.         [backButton setBackgroundImage:image forState:UIControlStateNormal]; 
5.         [backButton setTitle:@"返回" forState:UIControlStateNormal]; 
6.         [backButton setTitleColor:[UIColor whiteColor] forState:UIControlStateNormal]; 
7.         backButton.titleLabel.font=[UIFont systemFontOfSize:16]; 
8.         [backButton addTarget:self action:@selector(doBack:) forControlEvents:UIControlEventTouchUpInside]; 
9.         
10. //定制自己的风格的 UIBarButtonItem
11. UIBarButtonItem* someBarButtonItem= [[UIBarButtonItem alloc] initWithCustomView:backButton]; 
12.         [self.navigationItem setLeftBarButtonItem:someBarButtonItem]; 
13.         [someBarButtonItem release]; 
14.         [backButton release];