iphone facebook app如何使导航栏固定 [英] how iphone facebook app make the navigation bar fixed

问题描述

我是iPhone开发的新手，想询问导航控制器。如何将导航控制器固定在整个应用程序上，如facebook导航栏。它总是在导航栏中显示通知，朋友和消息。

I'm new in iPhone development and want to ask about the navigation controller. How can I make the navigation controller fixed over the whole application, like the facebook navigation bar. It always shows the notification, friends and messages in the navigation bar.

我正在尝试将自定义视图放在titleView中，但每次导航推送新视图时它都会消失？

I'm trying to put custom view in the titleView but it disappears every time the navigation push new view?

推荐答案

这对我有用：

toolBar = [[UIView alloc]initWithFrame:CGRectMake(105, 20, 105, 44)];
notificationsBtn = [UIButton buttonWithType:UIButtonTypeCustom];
messagesBtn = [UIButton buttonWithType:UIButtonTypeCustom];

[notificationsBtn setImage:[UIImage imageNamed:@"notifications-icon.png"] forState:UIControlStateNormal];
[notificationsBtn setFrame:CGRectMake(35, 0, 35 , 44)];
[notificationsBtn addTarget:self action:@selector(showNotifications:) forControlEvents:UIControlEventTouchUpInside];

[messagesBtn setImage:[UIImage imageNamed:@"messages-icon.png"] forState:UIControlStateNormal];
[messagesBtn setFrame:CGRectMake(70, 0, 35 , 44)];
[messagesBtn addTarget:self action:@selector(showMessages:) forControlEvents:UIControlEventTouchUpInside];

[toolBar addSubview:notificationsBtn];
[toolBar addSubview:messagesBtn];

[_window.rootViewController.view addSubview:toolBar];

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