将自定义按钮添加到无边框导航控制器 [英] Add custom button to navigation controller without border

问题描述

我将自定义按钮添加到导航控制器

<上一页>UIBarButtonItem *backButton = [[UIBarButtonItem alloc] initWithImage:[UIImage imageNamed:@"back.png"]样式:UIBarButtonItemStylePlain目标:自己动作:@selector(backAction)];self.navigationItem.leftBarButtonItem = backButton;

它工作正常，但按钮出现边框.我该如何解决?

更新我找到了解决方案

<上一页>UIButton *button = [[UIButton alloc] initWithFrame:CGRectMake(0, 0, 25, 25)];[按钮 setImage:[UIImage imageNamed:@"back.png"] forState:UIControlStateNormal];[按钮 addTarget:self action:@selector(buttonFavoriteClicked) forControlEvents:UIControlEventTouchUpInside];UIBarButtonItem *back = [[UIBarButtonItem alloc] initWithCustomView:button];[按钮释放]；

self.navigationItem.leftBarButtonItem = back;

解决方案

试试这个.

UIButton *backButton = [[UIButton alloc] initWithFrame:CGRectMake(0, 0, button_width, button_height)];[backButton setImage:[UIImage imageNamed:@"back.png"] forState:UIControlStateNormal];[backButton addTarget:self action:@selector(backAction) forControlEvents:UIControlEventTouchUpInside];self.navigationItem.leftBarButtonItem = [[UIBarButtonItem alloc] initWithCustomView:backButton];

I add custom button to navigation controller

    UIBarButtonItem *backButton = [[UIBarButtonItem alloc] initWithImage:[UIImage imageNamed:@"back.png"]
                                                                   style:UIBarButtonItemStylePlain
                                                                  target:self
                                                                  action:@selector(backAction)];
    self.navigationItem.leftBarButtonItem = backButton;

it works fine, but button appears bordered. How can I fix that?

UPDATE I found solution

   
 UIButton *button = [[UIButton alloc] initWithFrame:CGRectMake(0, 0, 25, 25)];
    [button setImage:[UIImage imageNamed:@"back.png"] forState:UIControlStateNormal];
    [button addTarget:self action:@selector(buttonFavoriteClicked) forControlEvents:UIControlEventTouchUpInside];
    UIBarButtonItem *back = [[UIBarButtonItem alloc] initWithCustomView:button];
    [button release];
 

self.navigationItem.leftBarButtonItem = back;

解决方案

Try this.

UIButton *backButton = [[UIButton alloc] initWithFrame:CGRectMake(0, 0, button_width, button_height)];
[backButton setImage:[UIImage imageNamed:@"back.png"] forState:UIControlStateNormal];
[backButton addTarget:self action:@selector(backAction) forControlEvents:UIControlEventTouchUpInside];
self.navigationItem.leftBarButtonItem = [[UIBarButtonItem alloc] initWithCustomView:backButton];

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