Question

我无法让Auto Layout在OS X上运行。我正在尝试做的非常简单，即我有一个NSTextField应该填充其superview的整个空间。这是我正在使用的最小工作示例代码：

@import AppKit;


int main() {

    @autoreleasepool {

        NSWindow *window = [[NSWindow alloc] initWithContentRect:NSMakeRect(0, 0, 300, 300)
                                                       styleMask:(NSTitledWindowMask | NSClosableWindowMask | NSResizableWindowMask)
                                                         backing:NSBackingStoreBuffered
                                                           defer:NO];

        NSTextField *textField = [[NSTextField alloc] initWithFrame:NSMakeRect(0, 0, 100, 100)];
        textField.stringValue = @"Lorem ipsum dolor sit atmet.";
        [window.contentView addSubview:textField];

        textField.translatesAutoresizingMaskIntoConstraints = NO;
        window.contentView.translatesAutoresizingMaskIntoConstraints = NO;

        [textField setContentHuggingPriority:1
                              forOrientation:NSLayoutConstraintOrientationHorizontal];
        [textField setContentHuggingPriority:1
                              forOrientation:NSLayoutConstraintOrientationVertical];

        [window.contentView addConstraints:
            [NSLayoutConstraint constraintsWithVisualFormat:@"H:|-[textField]-|"
                                                    options:0
                                                    metrics:nil
                                                      views:@{@"textField": textField}]];

        [window.contentView addConstraints:
            [NSLayoutConstraint constraintsWithVisualFormat:@"V:|-[textField]-|"
                                                    options:0
                                                    metrics:nil
                                                      views:@{@"textField": textField}]];

        window.contentView.wantsLayer = YES;
        window.contentView.layer.borderWidth = 5;
        [window makeKeyAndOrderFront:nil];

        [[NSApplication sharedApplication] run];

        [textField release];
        [window release];
    }

    return EXIT_SUCCESS;
}

运行时，文本字段不会出现。调整窗口大小时，可以清楚地看到内容视图的边框正确调整大小。我做错了什么？

Answer 1

我相信你不应该改变NSWindow的{{1}}行为，例如设置其contentView属性。

删除以下行对我有用：

translatesAutoresizingMaskIntoConstraints

OS X上的自动布局 - 使NSTextField填充超级视图

1 个答案: