popViewController由后退按钮动画

发布于 2024-09-01 21:05:39 字数 240 浏览 11 评论 0原文

如何从按下后退按钮弹出视图，我从以前的视图控制器传递了以下代码。谢谢

self.navigationItem.backBarButtonItem = [[UIBarButtonItem alloc]
         initWithTitle:@"Back"
         style:UIBarButtonItemStyleBordered
         target:nil action:nil];

原文

How can I popview from back button pressed, i passed the below code from previous view controller. Thanks

self.navigationItem.backBarButtonItem = [[UIBarButtonItem alloc]
         initWithTitle:@"Back"
         style:UIBarButtonItemStyleBordered
         target:nil action:nil];

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木槿暧夏七纪年 2024-09-08 21:05:39

无需手动添加后退按钮。

但如果您确实需要自定义按钮来弹出视图控制器，则可以创建自定义消息。

-(void)popViewControllerWithAnimation {
  [self.navigationController popViewControllerAnimated:YES];
}
...
self.navigationItem.leftBarButtonItem = [[UIBarButtonItem alloc]
     initWithTitle:@"Back"
     style:UIBarButtonItemStyleBordered
     target:self action:@selector(popViewControllerWithAnimation)];

或者创建一个 NSInspiration。

NSInvocation* invoc = [NSInvocation invocationWithMethodSignature:
      [self.navigationController methodSignatureForSelector:@selector(popViewControllerAnimated:)]];
// watch out for memory management issues: you may need to -retain invoc.
[invoc setTarget:self.navigationController];
[invoc setSelector:@selector(popViewControllerAnimated:)];
BOOL yes = YES;
[invoc setArgument:&yes atIndex:2];
self.navigationItem.leftBarButtonItem = [[UIBarButtonItem alloc]
     initWithTitle:@"Back"
     style:UIBarButtonItemStyleBordered
     target:invoc action:@selector(invoke)];

There's no need to manually add a back button.

But if you really need that custom button to pop the view controller, you could make a custom message.

-(void)popViewControllerWithAnimation {
  [self.navigationController popViewControllerAnimated:YES];
}
...
self.navigationItem.leftBarButtonItem = [[UIBarButtonItem alloc]
     initWithTitle:@"Back"
     style:UIBarButtonItemStyleBordered
     target:self action:@selector(popViewControllerWithAnimation)];

Or create an NSInvocation.

NSInvocation* invoc = [NSInvocation invocationWithMethodSignature:
      [self.navigationController methodSignatureForSelector:@selector(popViewControllerAnimated:)]];
// watch out for memory management issues: you may need to -retain invoc.
[invoc setTarget:self.navigationController];
[invoc setSelector:@selector(popViewControllerAnimated:)];
BOOL yes = YES;
[invoc setArgument:&yes atIndex:2];
self.navigationItem.leftBarButtonItem = [[UIBarButtonItem alloc]
     initWithTitle:@"Back"
     style:UIBarButtonItemStyleBordered
     target:invoc action:@selector(invoke)];

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