Question

我正在尝试在我的主视图控制器的子视图中创建一个uinavigationgroup。

catViewController *view = [[catViewController alloc] init];
UINavigationController *navCtrl = [[UINavigationController alloc] initWithRootViewController:view];
[_pageContainerView addSubview:navCtrl.view];
view.view.hidden = NO;

到目前为止这么好，我的子视图中有一个uinavigationcontroller，只是我想设置一个自定义左按钮来制作一个facebook风格的菜单，我必须有一个pan识别器和一个touchupinside，让我们从touchinside动作开始：

catViewController.m

- (void)viewDidLoad
{
    [super viewDidLoad];

    // set class variables
    appDelegate = [[UIApplication sharedApplication] delegate];

    // create button with touch handler
   btn = [UIButton buttonWithType:UIButtonTypeCustom];
   [btn setFrame:CGRectMake(0,0,42,33)];

   if( [self.navigationController.viewControllers count] == 1 ){
        [btn setImage:[UIImage imageNamed:@"btn_menu"] forState:UIControlStateNormal];
        [btn addTarget:self action:@selector(btnMenuPress:) forControlEvents:UIControlEventTouchUpInside];
    }else{
        [btn setImage:[UIImage imageNamed:@"btn_back"] forState:UIControlStateNormal];
        [btn addTarget:self action:@selector(btnBackPress:) forControlEvents:UIControlEventTouchUpInside];
    }

    // set the custom left button
    self.navigationItem.leftBarButtonItem = [[UIBarButtonItem alloc] initWithCustomView:btn];
}

- (IBAction)btnBackPress:(id)sender{
    NSLog(@"back press");
}

- (IBAction)btnMenuPress:(id)sender{
    NSLog(@"menu press");
}

到目前为止一切顺利，按钮就位，我的控制器可见，只有当我点击按钮时，我才得到一个线程1：EXC_BAD_ACCESS（Code = 1，address = 0x18）

所以现在我感到非常困惑，现在已经有4个多小时的时间来修补这个，现在是时候召唤骑兵了。

提前致谢！雷

navigationItem.leftBarButtonItem在点击/平移等时崩溃

0 个答案: