Question

我正在尝试编辑添加按钮以推送到另一个视图。但我收到错误

-(void)locationAdd:(id)sender{
 if([self.parentViewController isKindOfClass:[UINavigationController class]]){
  UINavigationController *parent = (UINavigationController *)self.parentViewController;
  if ([[parent viewControllers] objectAtIndex:0] == self) { 
   LocationsAddViewController *alocationAddViewController = [[[LocationsAddViewController alloc] initWithNibName:@"LocationAddView" bundle:[NSBundle mainBundle]] autorelease];
   //self.locationAddViewController = alocationAddViewController;
   alocationAddViewController.title = @"Toevoegen";
   [self.parentViewController pushViewController:alocationAddViewController animated:YES];
  }
  else if([[parent viewControllers] objectAtIndex:2] == self){
   LocationsAddViewController *alocationAddViewController = [[[LocationsAddViewController alloc] initWithNibName:@"LocationAddView" bundle:[NSBundle mainBundle]] autorelease];
   alocationAddViewController.title = @"Toevoegen";
   [self.parentViewController pushViewController:alocationAddViewController animated:YES];
  }
 }
}

因为可以从其他2个视图到达视图并且它必须看起来不同，所以我使用了

if([self.parentViewController isKindOfClass:[UINavigationController class]]){
        UINavigationController *parent = (UINavigationController *)self.parentViewController;
        if ([[parent viewControllers] objectAtIndex:0] == self) {

检查它的来源。

问题在于： [self.parentViewController pushViewController：alocationAddViewController animated：YES]; 我收到错误：

+ [LocationsTableViewController pushViewController：animated：]：无法识别的选择器发送到类0x23510 ***由于未捕获的异常'NSInvalidArgumentException'终止应用程序，原因：'+ [LocationsTableViewController pushViewController：animated：]：无法识别的选择器发送到类0x23510'

有人能帮助我吗？我做错了什么？

Answer 1

您的错误表明您尝试在pushViewController:animated:类对象上调用LocationsTableViewController。鉴于您发布的代码，这不可能实现。你确定你粘贴了引发异常的确切代码吗？（我怀疑你的if和else if块完全相同。）

使用UIBarButtonSystemItem Add推送到另一个视图

1 个答案: