批改NavigationController中backbutton

修改NavigationController中backbutton

原文:http://blog.csdn.net/ericsuper/article/details/7251465

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在父viewController中如下设置:
????UIBarButtonItem *backbutton = [[UIBarButtonItem alloc]init];
????backbutton.title = @"返回列表";
????self.navigationItem.backBarButtonItem = backbutton;

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????[backbutton release];

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或者在界面中添加了按钮之后，重新定义按钮的方法

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? ??[self.backButton?setAction:@selector(OnClick_btnBack:)];

? ? [self.backButton?setTarget:self];

-(IBAction)OnClick_btnBack:(id)sender? {

? ? [self.navigationController?popViewControllerAnimated:YES];

? ??//[self.navigationController pushViewController:self.navigationController.parentViewController animated:YES];

}