我正在尝试将一些在Objective-C中工作的代码转换为
Swift.我遇到的问题是needsDisplayForKey / actionForKey没有以相同的方式调用.据我所知,自定义键值未正确传递.这是我调试它时得到的结果：
原文链接：https://www.f2er.com/swift/319455.html默认值：
(String!) event = {
core = {
_baseAddress = Builtin.RawPointer = 0x00feee51 "onOrderIn"
_countAndFlags = 1073741833
_owner = Some {
Some = (instance_type = Builtin.RawPointer = 0x01026348 @"onOrderIn")
}
}
}
自定义值(传入空字符串)：
(String!) event = {
core = {
_baseAddress = Builtin.RawPointer = 0x0b418f79
_countAndFlags = 1073741833
_owner = Some {
Some = (instance_type = Builtin.RawPointer = 0x0b418f70 -> 0x006e38f0 (void *)0x006e38c8: __NSCFString)
}
}
}
我不确定相关代码是什么.我只想问 – 有没有其他人能够在Swift中定义自定义隐式动画？从Objective C移开时有什么我需要记住的吗？
override class func needsDisplayForKey(key: String!) -> Bool{
if key == "angleFrom" || key == "angleTo" {
return true;
}
return super.needsDisplayForKey(key)
}
override func actionForKey(event: String!) -> CAAction!{
if event == "angleFrom" || event == "angleTo" {
return self.makeAnimationForKey(event)
}
return super.actionForKey(event)
}
