在iOS 6上可见的工具栏中arbubutton项目的标题，但不是ios 7

Question

我正在使用以下代码工具栏，它是iOS 6的标题，但不是iOS 7。

UIBarButtonItem *settingButton = [[UIBarButtonItem alloc] initWithImage:[UIImage imageNamed:@"multimedia/icon_settings.png"] style:UIBarButtonItemStylePlain                                                                  target:self                                                                 action:@selector(pressSettings:)];
UIBarButtonItem *refreshButton = [[UIBarButtonItem alloc] initWithImage:[UIImage imageNamed:@"multimedia/icon_refresh.png"]                                                                style:UIBarButtonItemStylePlain target:self                                                                 action:@selector(pressRefresh:)];
UIBarButtonItem *helpButton = [[UIBarButtonItem alloc] initWithImage:[UIImage imageNamed:@"multimedia/icon_help.png"]                                                                  style:UIBarButtonItemStylePlain target:self action:@selector(pressHelp:)];
UIBarButtonItem *flexSpace = [[UIBarButtonItem alloc] initWithBarButtonSystemItem:UIBarButtonSystemItemFlexibleSpace target:nil action:nil];

/* Set the title of the button */
[settingButton setTitle:@"Settings"];
[refreshButton setTitle:@"Refresh"];
[helpButton setTitle:@"Help"];
[feedbackButton setTitle:@"Feedback"];

NSArray *toolbarButtons = @[settingButton, flexSpace, helpButton, flexSpace, feedbackButton, flexSpace, refreshButton];

[self setToolbarItems:toolbarButtons];

.

此代码用iOS 6工作正常，但仅显示iOS 7中的栏按钮图像不是标题。

Answer 1

UinavigationController在其堆栈中维护每个视图控制器的UIToolBar。此工具栏通常隐藏。因此，您需要明确显示工具栏：

[self.navController setToolbarHidden:NO];

.

获取ViewController的导航控制器，并将上述SetToolbarhidden属性设置为NO。

希望它可以帮助你。