Question

var leaderboardRowVOs:Vector.<LeaderboardRowVO> = new Vector.<LeaderboardRowVO>();

作为目标进入该系统的另一部分,Im试图将其退回到实际类型中。

notification.getBody() as Vector.<LeaderboardRowVO> //throwing error

Answer 1

在AS3中,有两种类型:

// Casting
// 1: returns null if types are not compatible, 
//    returns reference otherwise
notification.getBody() as Vector.<LeaderboardRowVO>

// Converting    
// 2: throws exception if types are not compatible, 
//    returns reference otherwise
Vector.<LeaderboardRowVO>(notification.getBody())

第1号案件没有出现错误,如果你有这种行为,就必须在<条码>通知中出现错误。

EDIT: @divillysausages made a clever comment about case 2 actually creating an object of another type. This is not the case here. This is what mostly happens for native types with one exception: the Array class. Some of the native classes have top level converting functions. Refer to adobe livedocs for the complete list of them. A Vector can be instantiated this way by passing an Array of appropriate types to the Vector() function.

Answer 2

别的一点必须出现在你的班子里,因为它能够把病媒投向目标,然后回到病媒。这一简单测试表明:

var v:Vector.<int> = new Vector.<int>();
v.push(1);
v.push(2);

var o:Object = v as Object;

var v2:Vector.<int> = o as Vector.<int>;

trace(v2[0]); // Output "1"
trace(v2[1]); // Output "2"

因此,你的问题必须是其他地方的问题。

友情链接