NSView自动调整大小以适应内容视图

Question

CustomView *customView = [[CustomView alloc] init];
[self.window.contentView addSubview:customView];

当窗口调整大小时，如何customView.frame.size.height始终等于contentView.frame.size.height customView.frame.size.width = 20;？

Answer 1

设置自定义视图的 autoresizingMask ：

CustomView *customView = [[CustomView alloc] init];
customView.autoresizingMask = NSViewWidthSizable | NSViewHeightSizable;
[self.window.contentView addSubview:customView];

Answer 2

Swift版本，应用autoresizingMask：

    let customView = CustomView()
    customView.autoresizingMask = [.width, .height]
    self.window.contentView.addSubview(customView)

参考选项： https://developer.apple.com/documentation/appkit/nsview/autoresizingmask