自定义UIBarButtonItem

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