应用程序崩溃和内存泄漏已经结束

Question

我的应用在模拟器中运行了一段时间，但几次触摸后，它崩溃并烧毁。

这里是代码

-(IBAction)extraCrisp:(id)sender
{
    myViewController *myView = [[myViewController alloc]
                                    initWithNibName:@"myViewController"
                                    bundle:nil];
    // get the view that's currently showing
    UIView *currentView = self.view;
    // get the the underlying UIWindow, or the view containing the current view
    UIView *theWindow = [currentView superview];

    UIView *newView = myView.view;

    // remove the current view and replace with myView1
    [currentView removeFromSuperview];
    [theWindow addSubview:newView];

    // set up an animation for the transition between the views
    CATransition *animation = [CATransition animation];
    [animation setDuration:0.5];
    [animation setType:kCATransitionPush];
    [animation setSubtype:kCATransitionFromLeft];
    [animation setTimingFunction:[CAMediaTimingFunction functionWithName:kCAMediaTimingFunctionEaseInEaseOut]];

    [[theWindow layer] addAnimation:animation forKey:@"SwitchToView1"];
    [myView release];

}

那么，我在这里做错了什么？任何帮助都会受到高度赞扬。谢谢

Answer 1

安迪，您的代码确实表明您是初学者。要实现您的要求，可以使用更清洁、更安全的方法。对于多视图应用程序，通常每个人都使用UINavigationController 或UITabBarController。在您的情况下 UINavigationController 是您的朋友，如果您可以花一个小时 this 教程将帮助您入门..我建议您学习使用这些方法，而不是继续您现在的方式...并停止阅读此答案..

现在你的代码好了..这是第一部分..

myViewController *myView = [[myViewController alloc]
                                    initWithNibName:@"myViewController"
                                    bundle:nil];
// get the view that's currently showing
UIView *currentView = self.view;
// get the the underlying UIWindow, or the view containing the current view
UIView *theWindow = [currentView superview];

UIView *newView = myView.view;

// remove the current view and replace with myView1
[currentView removeFromSuperview];
[theWindow addSubview:newView];

我这样重写你的代码..

myViewController *myView = [[myViewController alloc]
                                        initWithNibName:@"myViewController"
                                        bundle:nil];
UIWindow *currentWindow = [[UIApplication sharedApplication]keyWindow];
[currentWindow addSubview:myView.view];

现在您将 myView 添加到 UIWindow 后发布它。如果您评论该行，我认为您的崩溃将会消失。通常，添加到 UIWindow 的 UIViewController 会在应用程序委托文件的 dealloc 中释放。

现在你的动画..

// set up an animation for the transition between the views
CATransition *animation = [CATransition animation];
[animation setDuration:0.5];
[animation setType:kCATransitionPush];
[animation setSubtype:kCATransitionFromLeft];
[animation setTimingFunction:[CAMediaTimingFunction functionWithName:kCAMediaTimingFunctionEaseInEaseOut]];

[[myView layer] addAnimation:animation forKey:@"SwitchToView1"];

再次..忘记这段代码并阅读 UINavigationController..你在那里做错了..