objective-c - 关于 NSDictionaryOfVariableBindings 将 objc 转换为 swift

Question

我正在努力实现 https://stackoverflow.com/a/17376619/433570

特别是。

UIView* subview = ...;

NSDictionary *views = NSDictionaryOfVariableBindings(subview);
[self addConstraints:[NSLayoutConstraint
    constraintsWithVisualFormat:@"H:|[subview]|"
    options:0 metrics:nil views:views]];

我看过 NSDictionaryOfVariableBindings swift equivalent?

但这对我没有多大帮助，我怎样才能将 objc 转换为 swift？

Answer 1

您只需获取 NSDictionaryOfVariableBindings 中列出的每个 View ，并创建一个包含该 View 的常用 swift 字典，并将变量名称作为键。

示例:

NSDictionaryOfVariableBindings(view1, view2, view3)

会变成

["view1" : view1, "view2" : view2, "view3" : view3]

所以

NSDictionary *views = NSDictionaryOfVariableBindings(subview);

会变成

let views = ["subview" : subview]