Question

我有一个UINavigationBar子类，我正在添加一些UIViews。

我的UIViews根据我在NSDictionary *views, *metrics; // search container constraints [self addSubview:self.searchContainer]; self.searchContainer.translatesAutoresizingMaskIntoConstraints = NO; views = NSDictionaryOfVariableBindings(_searchContainer); metrics = @{@"h": @(SearchContainerExpandedHeight) }; self.searchContainerLeftSpacingConstraint = [NSLayoutConstraint constraintWithItem:self.searchContainer attribute:NSLayoutAttributeLeft relatedBy:NSLayoutRelationEqual toItem:self attribute:NSLayoutAttributeLeft multiplier:1.0 constant:xMargin]; [self addConstraint:self.searchContainerLeftSpacingConstraint]; self.searchContainerRightSpacingConstraint = [NSLayoutConstraint constraintWithItem:self.searchContainer attribute:NSLayoutAttributeRight relatedBy:NSLayoutRelationEqual toItem:self attribute:NSLayoutAttributeRight multiplier:1.0 constant: 0 - xMargin]; [self addConstraint:self.searchContainerRightSpacingConstraint]; [self addConstraints:[NSLayoutConstraint constraintsWithVisualFormat:@"V:|-24-[_searchContainer(h)]" options:0 metrics:metrics views:views]]; //etc

中定义的约束进行了布局

Sub HTH()

    Dim rCopy As Range

    With Sheet1.AutoFilter.Range
        '// Set to somewhere blank and unused on your worksheet
        Set rCopy = Sheet1.Range("A" & Rows.Count - (.Rows.Count))
        .SpecialCells(xlCellTypeVisible).Copy rCopy
    End With

    With rCopy.Offset(1).Resize(5) '// Offset to avoid the header
        .Resize(, 2).Copy Sheet2.Range("A5")
        .Offset(, 3).Resize(, 1).Copy Sheet2.Range("D5")
        .Offset(, 5).Resize(, 1).Copy Sheet2.Range("F5")
        .CurrentRegion.Delete xlUp '// Delete the tempory area
    End With

    Set rCopy = Nothing

End Sub

在iOS8及以上版本，这很好用。在iOS7上，我收到以下错误：

＆＃39;执行-layoutSubviews后仍需要自动布局。 MyUINavigationBarSubclass＆-outoutSubviews的实现需要调用super。＆＃39;

是什么给出的？我没有在任何地方覆盖layoutSubviews吗？

PS。我在添加约束之前尝试调用[self layoutIfNeeded]（正如其他人在其他问题中所建议的那样），但它似乎没有用。

Answer 1

确保设置：

[containerView setTranslatesAutoresizingMaskIntoConstraints:NO];

表示您的容器和子视图。

“执行-layoutSubviews＆＃34后仍然需要自动布局;在UINavigationBar子类上

1 个答案: