xcode – 将自定义按钮添加到没有边框的导航控制器

发布时间：2020-12-15 01:49:12 所属栏目：百科来源：网络整理

导读：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.leftBarButton

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];

（编辑：李大同）

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