xcode – 将自定义按钮添加到没有边框的导航控制器

概述我向导航控制器添加自定义按钮 UIBarButtonItem *backButton = [[UIBarButtonItem alloc] initWithImage:[UIImage imageNamed:@"back.png"] style:UIBar 我向导航控制器添加自定义按钮

    UIbarbuttonItem *backbutton = [[UIbarbuttonItem alloc] initWithImage:[UIImage imagenamed:@"back.png"]                                                                   style:UIbarbuttonItemStylePlain                                                                  target:self                                                                  action:@selector(backAction)];    self.navigationItem.leftbarbuttonItem = backbutton;

它工作正常,但按钮出现边框.我该如何解决这个问题？

UPDATE
我找到了解决方案

    UIbutton *button = [[UIbutton alloc] initWithFrame:CGRectMake(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;

解决方法 尝试这个.

UIbutton *backbutton = [[UIbutton alloc] initWithFrame:CGRectMake(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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