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UINavigationBar *navBar = [[UINavigationBar alloc] initWithFrame:CGRectMake(0, 0, 320, 44)];
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UINavigationItem *navItem = [[UINavigationItem alloc] initWithTitle:nil];
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UIBarButtonItem *leftButton = [[UIBarButtonItem alloc] initWithTitle:@"左边" style:UIBarButtonItemStyleBordered target:self action:@selector(clickLeftButton)];
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UIBarButtonItem *rightButton = [[UIBarButtonItem alloc] initWithTitle:@"右边" style:UIBarButtonItemStyleDone target:self action:@selector(clickRightButton)];
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[navItem setTitle:@"图灵工作室"];
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[navBar pushNavigationItem:navItem animated:NO];
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[navItem setLeftBarButtonItem:leftButton];
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[navItem setRightBarButtonItem:rightButton];
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[self.view addSubview:navBar];
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-(void)showDialog:(NSString *)str
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{
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UIAlertView *alert = [[UIAlertView alloc] initWithTitle:@"这是一个对话框" message:str delegate:self cancelButtonTitle:@"确定" otherButtonTitles: nil];
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[alert show];
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
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}
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-(void) clickLeftButton
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{
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[self showDialog:@"点击了导航栏左边按钮"];
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}
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-(void) clickRightButton
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{
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[self showDialog:@"点击了导航栏右边按钮"];
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}
IOS导航栏的使用方法
原文:http://blog.csdn.net/it_ds/article/details/43267807