ios - touchesBegan EXC_BAD_ACCESS

Question

我在“[subview touchesBegan:touches withEvent:event];”这一行得到一个 EXC_BAD_ACCESS。当我删除那条线时，一切正常。我做错了什么？

- (void)touchesBegan:(NSSet *)touches withEvent:(UIEvent *)event {
    for(UIView *subview in [self.view subviews]) {
        NSLog(@"%@", subview);
        NSLog(@"%@", touches);
        NSLog(@"%@", event);
        [subview touchesBegan:touches withEvent:event];
    }
}

Answer 1

没有回溯，很难说。

但是，touchesBegan:withEvent:这不是您应该从代码中调用的方法。它只能由系统调用。

更有可能的是，您在无法处理它的子视图上调用该方法，因此它调用它将它传递给它的superview......然后，无限循环繁荣。

Answer 2

You can not call the "touchesBegan:touches withEvent:event" directly, it's a delegate method in iOS which call by system. If you want to send the touch event to subview, why dont you define a method like "touchesBegan:",do you want to do in touchesBegan, and call it in like this:

- (void)touchesBegan:(NSSet *)touches withEvent:(UIEvent *)event { for(UIView *subview in [self.view subviews]) { NSLog(@"%@", subview); NSLog(@"%@", touches); NSLog(@"%@", event); [subview touchesBegan]; } }