在Window中更改大小时的方法调用是什么?
我发现了大概windowDidResize:
,所以我尝试了
- (void)windowDidResize:(NSNotification *)notification {
NSLog(@"test");
}
我找到了需要使用NSWindowDidResizeNotification
的内容,但我第一次使用NSNotification并且对此不太了解。
有人可以为我的活动写一个完整的例子吗?
答案 0 :(得分:12)
在窗口委托上调用-windowDidResize:
方法。是您发布窗口委托的方法的对象吗?
对于委托以外的其他人,你可以这样做:
[[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(windowDidResize:) name:NSWindowDidResizeNotification object:theWindow];
并且,当观察者不再感兴趣或被解除分配时:
[[NSNotificationCenter defaultCenter] removeObserver:self name:NSWindowDidResizeNotification object:theWindow];
另一种方法是将新的基于块的API用于NSNotificationCenter
:
id observation = [[NSNotificationCenter defaultCenter] addObserverForName:NSWindowDidResizeNotification object:theWindow queue:nil usingBlock:^(NSNotification *){
NSLog(@"test");
}];
// store/retain the observation for as long as you're interested in it. When it's deallocated, you stop observing.
答案 1 :(得分:0)
您可以实现NSWindowDelegate:
class YourVC: NSWindowDelegate {
// This method trigger when you press the resize button in the window toolbar
func windowDidResize(_ notification: Notification) {
// Write your code here
}
}
然后,在viewDidLoad()或viewDidAppear()方法中
self.view.window?.delegate = self
您还可以使用其他委托方法: