QML: programmatically update binding

Question

有没有一种方法可以以编程方式更新（即重新评估）属性的当前绑定（而无需将其设置为其他值并进行重置）？

Answer 1

If your binding looks something like this:

foo: bar

change it to this:

foo: { baz; bar }

where baz is something that changes often enough to cause foo to be re-evaluated when you need it to, which implies that baz would be related. Similar hacks have been done here , for example.

I would recommend fixing the issue properly by not relying on the order of evaluation.

Answer 2

You can do (hack that should be avoided if possible):

value: foo, bindedValue

or

value: (foo && !foo) || bindedValue

value will be completely reevaluated when calling the following function reevaluateValue() :

property bool foo: false

function reevaluateValue() {
    foo = !foo
}