cocoa - NSScrollView 中的自动布局约束

Question

我正在以编程方式在 NSScrollView 内创建 NSTableView，但是当我尝试将框架设置为 ScrollView 时，出现约束错误。

Unable to simultaneously satisfy constraints:
(
    "<NSAutoresizingMaskLayoutConstraint:0x107d4ec50 h=--& v=--& V:[NSScrollView:0x10068c570(372.5)]>",
    "<NSAutoresizingMaskLayoutConstraint:0x107d4d020 h=-&- v=-&- V:[NSClipView:0x10068d7f0]-(673)-|   (Names: '|':NSScrollView:0x10068c570 )>",
    "<NSAutoresizingMaskLayoutConstraint:0x107d4cfc0 h=-&- v=-&- V:|-(2)-[NSClipView:0x10068d7f0]   (Names: '|':NSScrollView:0x10068c570 )>"
)

Will attempt to recover by breaking constraint 
<NSAutoresizingMaskLayoutConstraint:0x107d4d020 h=-&- v=-&- V:[NSClipView:0x10068d7f0]-(673)-|   (Names: '|':NSScrollView:0x10068c570 )>

Set the NSUserDefault NSConstraintBasedLayoutVisualizeMutuallyExclusiveConstraints to YES to have -[NSWindow visualizeConstraints:] automatically called when this happens.  And/or, break on objc_exception_throw to catch this in the debugger.

看起来它们是自动创建的。

这是我的创建代码(使用 arc)我正在子类化 NSView

-(void)addColumnsToTable{
    NSTableColumn *col = [[NSTableColumn alloc]initWithIdentifier:@"priority"];
    [col.headerCell setStringValue:@"priority"];
    [col setWidth:10];
    [col setMinWidth:1];
    [col setMaxWidth:10];
    [self.tableView addTableColumn:col];

   // col = [[NSTableColumn alloc]initWithIdentifier:@"name"];
   // [self.tableView addTableColumn:col];   
}


-(void)createTable{
    NSTableView *tableView = [[NSTableView alloc]initWithFrame:NSZeroRect];

    [tableView setDelegate:self];
    [tableView setDataSource:self];

    NSScrollView *scrollView = [[NSScrollView alloc]initWithFrame:self.bounds];
    [scrollView setBorderType:NSGrooveBorder];

    [self addSubview:scrollView];
    [scrollView setDocumentView:tableView];
    [scrollView setHasVerticalScroller:YES];
    [scrollView setAutohidesScrollers:YES];


    self.tableView = tableView;
    self.scrollView = scrollView;

    [self addColumnsToTable];

}

这是它的问题所在:

-(void)setFrame:(NSRect)frameRect{
    [super setFrame:frameRect];
    [self.scrollView setFrame:self.bounds];

}

有没有办法关闭这些自动约束？

Answer 1

明白了，问题是自动约束是根据 View 的自动调整大小掩码创建的。要停用此行为:

[scrollView setTranslatesAutoresizingMaskIntoConstraints:NO];

其中scrollView是NSView的 subview