UINavigationItem：再添加一个按钮答案

【问题标题】：UINavigationItem: Add one more buttonUINavigationItem：再添加一个按钮
【发布时间】：2013-05-08 21:48:18
【问题描述】：

如何在 navigationItem 中添加新按钮？假设我需要在右侧按钮附近添加它。

用于左右的代码。

self.navigationItem.leftBarButtonItem = [[UIBarButtonItem alloc] initWithCustomView:_cancelButton];
self.navigationItem.rightBarButtonItem = [[UIBarButtonItem alloc] initWithCustomView:_shareButton];

如何再添加一个按钮？

【问题讨论】：

参考link
@Jyotishree 谢谢...让我这样试试。
向 UIView 添加按钮，然后将该视图添加为右栏按钮项。
@BobApple，尝试过..没有成功..请提供任何样品...
好的，让我发布详细答案。

标签： iphone objective-c uinavigationitem

【解决方案1】：

在navigationcontroller的右侧添加多个按钮有不同的方法。下面给出了一种最简单的方法

 UIView *buttonView = [[UIView alloc] initWithFrame:CGRectMake(0, 0, 100, 44)];

UIButton *exampleButton1 = [UIButton buttonWithType:UIButtonTypeCustom];
exampleButton1.frame = CGRectMake(0, 2, 30, 40);
[exampleButton1 addTarget:self action:@selector(FirstMethod) forControlEvents:UIControlEventTouchUpInside];
[exampleButton1 setImage:[UIImage imageNamed:@"image1.png"] forState:UIControlStateNormal];
[buttonView addSubview:exampleButton1];


UIButton *exampleButton2 = [UIButton buttonWithType:UIButtonTypeCustom];
exampleButton2.frame = CGRectMake(70, 2, 30, 40);
[exampleButton2 addTarget:self action:@selector(Second method) forControlEvents:UIControlEventTouchUpInside];
[exampleButton2 setImage:[UIImage imageNamed:@"image2.png"] forState:UIControlStateNormal];

[buttonView addSubview:exampleButton2];

 self.navigationItem.rightBarButtonItem = [[UIBarButtonItem alloc] initWithCustomView:buttonView];

希望对你有所帮助。谢谢

【讨论】：

【解决方案2】：

您可以添加更多按钮

self.navigationItem.leftBarButtonItems = [NSArray arrayWithObjects:uibarbuttonInstance1, uibarbuttonInstance2, nil];

右键也一样

self.navigationItem.rightBarButtonItems = [NSArray arrayWithObjects:uibarbuttonInstance1, uibarbuttonInstance2, nil];

【讨论】：

我之前和现在都试过了...崩溃了：-[UIButton isSystemItem]: unrecognized selector sent to instance 0xa68b840'
添加 UIBarButton 而不是 UIbutton
@iPhoneProcessor，虽然为时已晚。我遇到了和你一样的问题。我实际上是将 UIImage 而不是 UIBarButton 放入数组中。

【解决方案3】：

中间按钮

UIButton *btnShow = [[UIButton alloc]initWithFrame:CGRectMake(0, 0, 34, 34)];
    btnShow.backgroundColor = [UIColor colorWithWhite:0.411 alpha:1.000];
    [btnShow setImage:[UIImage imageNamed:@"btn_back.png"] forState:UIControlStateNormal];
    [btnShow setImage:[UIImage imageNamed:@"btn_back.png"] forState:UIControlStateHighlighted];
    self.navigationItem.titleView = btnShow;

右栏按钮

 UIButton *tempButton1 = [UIButton buttonWithType:UIButtonTypeCustom];
    [tempButton1 setFrame:CGRectMake(0, 0, 34, 34)];
    tempButton1.tag = 0;
    [tempButton1 addTarget:self action:@selector(btnBackClicked:) forControlEvents:UIControlEventTouchUpInside];

    [tempButton1 setImage:[UIImage imageNamed:@"btn_back.png"] forState:UIControlStateNormal];
    [tempButton1 setImage:[UIImage imageNamed:@"btn_back.png"] forState:UIControlStateHighlighted];
    [self.navigationItem setRightBarButtonItem:[[UIBarButtonItem alloc] initWithCustomView:tempButton1]];

左栏按钮

UIButton *tempButton = [UIButton buttonWithType:UIButtonTypeCustom];
[tempButton setFrame:CGRectMake(0, 0, 34, 34)];
[tempButton addTarget:self action:@selector(btnBackClicked:) forControlEvents:UIControlEventTouchUpInside];
[tempButton setImage:[UIImage imageNamed:@"btn_back.png"] forState:UIControlStateNormal];
[tempButton setImage:[UIImage imageNamed:@"btn_back.png"] forState:UIControlStateHighlighted];
[self.navigationItem setLeftBarButtonItem:[[UIBarButtonItem alloc] initWithCustomView:tempButton]

输出

【讨论】：

在 TitleView 中您放置了 Text 或什么 ????好的...如果是这样...您需要文本和按钮，或者在文本本身中充当按钮

【解决方案4】：

NSArray *tempArray2= [[NSArray alloc] initWithObjects:self.shareBtn,self.gameCenterBtn,nil];
self.navigationItem.leftBarButtonItems=tempArray2;

【讨论】：

【解决方案5】：

试试这个。它对我有用。

UIBarButtonItem *flex = [[UIBarButtonItem alloc] initWithBarButtonSystemItem:UIBarButtonSystemItemFixedSpace target:nil action:nil];
    flex.width = 20;
    UIButton *btn = [UIButton buttonWithType:UIButtonTypeCustom];
    [btn setFrame:CGRectMake(0, 0, 40, 30)];
    [btn setImage:[UIImage imageNamed:@"mac-gray.png"] forState:UIControlStateNormal];

    UIBarButtonItem *bar1 = [[UIBarButtonItem alloc]initWithCustomView:btn];

    UIButton *btn2 = [UIButton buttonWithType:UIButtonTypeCustom];
    [btn2 setFrame:CGRectMake(0, 0, 40, 30)];
    [btn2 setImage:[UIImage imageNamed:@"mac-gray.png"] forState:UIControlStateNormal];

    UIBarButtonItem *bar2 = [[UIBarButtonItem alloc]initWithCustomView:btn2];

    self.navigationItem.rightBarButtonItems = [NSArray arrayWithObjects:bar1,flex,bar2, nil];

【讨论】：

@iPhoneProcessor 这对你有帮助吗？