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我想创建一个后退按钮,我的iPhone应用程序,我想回到我的登陆视图..我使用此代码,但它没有工作回到上一个ViewController在Xcode 5故事板
UIButton *back = [UIButton buttonWithType:UIButtonTypeCustom];
[back setFrame:CGRectMake(0, 0, 24, 24)];
[back setImage:[UIImage imageNamed:@"back.png"] forState:UIControlStateNormal];
[back addTarget:self action:@selector(goback) forControlEvents:UIControlEventTouchUpInside];
UIBarButtonItem *btnBack = [[UIBarButtonItem alloc] initWithCustomView:back];
self.navigationItem.hidesBackButton= YES;
navEng.leftBarButtonItem = btnBack;
-(void)goback{ [self.navigationController popToRootViewControllerAnimated:YES]; }