Question

我想将自定义图像添加为左侧菜单项。这就是为什么我使用customView其他我得到我的图像但是蓝色。

这就是我实现它的方式：

UIImageView *menuItemImageView = [[UIImageView alloc] initWithImage:[UIImage imageNamed:@"MenuButton"]];
UIBarButtonItem *leftMenuItemButton = [[UIBarButtonItem alloc] initWithCustomView:menuItemImageView];
[leftMenuItemButton setAction:@selector(menuClicked:)];
[leftMenuItemButton setTarget:self];
self.navigationItem.leftBarButtonItem = leftMenuItemButton;

一切正常，除非我点击我的按钮没有任何反应。它永远不会出现在这个：

- (void)menuClicked:(id)menuClicked {
    NSLog(@"%s menuClicked", __PRETTY_FUNCTION__);
}

有人可以帮助我吗？

Answer 1

此处的问题似乎是使用ImageView，UIBarButtonItem目标和操作仅在自定义视图为UIButton时有效。

尝试这样的事情

UIButton* someBtn = [UIButton buttonWithType: UIButtonTypeInfoLight];
UIBarButtonItem *leftMenuItemButton = [[UIBarButtonItem alloc]   initWithCustomView:someBtn];
[leftMenuItemButton setAction:@selector(menuClicked:)];
[leftMenuItemButton setTarget:self];
self.navigationItem.leftBarButtonItem = leftMenuItemButton;

希望这有帮助

Answer 2

首先，您需要创建自定义UIButton和UIBarButtonItem

UIButton *button = [UIButton buttonWithType:UIButtonTypeCustom];
[button addTarget:self action:@selector(menuClicked:) forControlEvents:UIControlEventTouchUpInside];
[button setImage:[UIImage imageNamed:@"image.png"] forState:UIControlStateNormal];
[button setImage:[UIImage imageNamed:@"image.png"] forState:UIControlStateHighlighted];
UIBarButtonItem *barButton = [[UIBarButtonItem alloc] initWithCustomView:button];

将按钮添加到navigationBar

[self.navigationItem setLeftBarButtonItems:[NSArray arrayWithObjects:barButton, nil]];

Answer 3

感谢n00bprogrammer：

 UIBarButtonItem * menuItem = [[UIBarButtonItem alloc] initWithImage:[[UIImage imageNamed:@"MenuButton"] imageWithRenderingMode:UIImageRenderingModeAlwaysOriginal] style:UIBarButtonItemStylePlain target:self action:@selector(menuClicked:)] ;
    self.navigationItem.leftBarButtonItem = menuItem;

Answer 4

两个答案都指向正确的方向。

这就是我的工作方式：

UIButton *showCalendar = [[UIButton alloc] initWithFrame:CGRectMake(0, 0, 30, 30)];
showCalendar.frame = CGRectMake( 0, 0, 40, 30 );
[showCalendar setImage:[UIImage imageNamed:@"calendar"] forState:UIControlStateNormal];
[showCalendar addTarget:self action:@selector(toggleCalendar) forControlEvents:UIControlEventTouchUpInside];
self.navigationItem.rightBarButtonItem = [[UIBarButtonItem alloc] initWithCustomView:showCalendar];

Answer 5

以下是代码，为您的imageview添加点按手势：

UIImageView *menuItemImageView = [[UIImageView alloc] initWithImage:[UIImage imageNamed:@"MenuButton"]];
UIBarButtonItem *leftMenuItemButton = [[UIBarButtonItem alloc] initWithCustomView:menuItemImageView];

UITapGestureRecognizer *tapGesture =
[[UITapGestureRecognizer alloc] initWithTarget:self
                                        action:@selector(menuClicked:)];
[menuItemImageView addGestureRecognizer:tapGesture];

MenuItemButtom操作不起作用

5 个答案: