Ios 动态UIButton lldb崩溃

因此，我正在创建按钮并用它们填充视图：

    -(void) generateAnimalsForView:(UIView *)view withAnimals:(NSString *)animalName animalCount:(int)count
{
    animalsView = view;

    //get size of main view
    int viewWidth = view.frame.size.width - animalWidth;
    int viewHeight = view.frame.size.height - animalHeight;

    if (count > maxCountOfAnimals)
        count = maxCountOfAnimals;

    if (count > 0){

        UIButton *initialView = [[UIButton alloc] initWithFrame:CGRectMake(animalWidth+arc4random() % (int)viewWidth, animalHeight+arc4random() % (int)viewHeight, animalWidth, animalHeight)];
        [initialView setTag:100];
        [initialView addTarget:self action:@selector(setAnimationForRunning:) forControlEvents:(UIControlEvents)UIControlEventTouchDown];
        [initialView setBackgroundImage:[UIImage imageNamed:@"animal"] forState:UIControlStateNormal];
        [view addSubview:initialView];

        int numViews = 0;

        while (numViews < count-1) {
            BOOL goodView = YES;
            UIButton *candidateView = [[UIButton alloc] initWithFrame:CGRectMake(arc4random() % (int)viewWidth, arc4random() % (int)viewHeight, animalWidth, animalHeight)];
            [candidateView setTag:100+numViews+1];
            [candidateView addTarget:self action:@selector(setAnimationForRunning:) forControlEvents:(UIControlEvents)UIControlEventTouchDown];
            [candidateView setBackgroundImage:[UIImage imageNamed:@"animal"] forState:UIControlStateNormal];
            for (UIButton *placedView in view.subviews) {
                if (CGRectIntersectsRect(CGRectInset(candidateView.frame, 5+arc4random()%5, 5+arc4random()%5), placedView.frame)) {
                    goodView = NO;
                    break;
                }
            }
            if (goodView) {
                [view addSubview:candidateView];
                numViews += 1;
            }}
        }
}

它在main方法上停止

我的setAnimationForRunning方法：

编辑2：

所以问题是，我的模型类中有这个方法，当我试图使用VC中的这个类创建带有动作的按钮时，它会因为错误lldb而崩溃

AnimalsModel *animalsModel = [[AnimalsModel alloc] init];//model for math and stuff
[animalsModel generateAnimalsForView:animalsView withAnimals:@"animal" animalCount:(int)fResultWeight];

但当我在VC中创建相同的方法并使用它时：

[self generateAnimalsForView:animalsView withAnimals:@"animal" animalCount:(int)fResultWeight];

---

按钮被创建，一切都完美地工作。有人能给我解释一下为什么会这样吗？谢谢

在您的问题中添加准确完整的错误信息。而且它肯定会在特定行上崩溃？您不使用UIControlEventTouchUpInside作为按钮有什么原因吗？不，只是测试它如何与UIControlEventTouchDownenable异常断点一起工作，并查看您的应用程序崩溃的确切位置。

AnimalsModel *animalsModel = [[AnimalsModel alloc] init];//model for math and stuff
[animalsModel generateAnimalsForView:animalsView withAnimals:@"animal" animalCount:(int)fResultWeight];

[self generateAnimalsForView:animalsView withAnimals:@"animal" animalCount:(int)fResultWeight];