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[英]iOS - How to create WKWebView Back Button programmatically?
[英]Create a back bar button programmatically
我正在尝试以编程方式创建后退按钮,类似于iOS 7默认后退按钮。 但是,当我将后退按钮添加到导航项时。 雪佛龙plus失踪。 我该如何实现?
UIImage* image_back = [UIImage imageNamed:@"leftarrow.png"];
CGRect backframe = CGRectMake(15, 5, 15,21);
UIButton *backbutton = [[UIButton alloc] initWithFrame:backframe];
[backbutton setBackgroundImage:image_back forState:UIControlStateNormal];
[backbutton addTarget:self action:@selector(Btn_back:)
forControlEvents:UIControlEventTouchUpInside];
[backbutton setShowsTouchWhenHighlighted:YES];
UIBarButtonItem *backbarbutton =[[UIBarButtonItem alloc] initWithCustomView:backbutton];
self.navigationItem.leftBarButtonItem=backbarbutton;
[backbutton release];
-(IBAction)Btn_back:(id)sender
{
[self.navigationController popViewControllerAnimated:YES];
}
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