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UIBarButtonItem *backButton = [[UIBarButtonItem alloc]  
                               initWithImage:@"rGoBack" 
                               style:UIBarButtonItemStylePlain  
                               target:nil action:nil];  
self.navigationItem.backBarButtonItem = backButton;  
[backButton release];

我使用这个来源。但它不起作用。我不知道为什么不。请..

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1 回答 1

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乍一看:

initWithImage:@"rGoBack" 

这里UIImage参数是必需的,NSString而是传递。尝试编写如下内容:

initWithImage:[UIImage imageNamed:@"rGoBack.png"]; // or whatever image name you have
于 2010-03-09T14:39:26.817 回答