Adob​​e Air - KeyboardEvent错误

Question

下面的代码会引发错误1046：未找到类型或不是编译时常量：KeyboardEvent。

有人知道为什么吗？

import flash.desktop.NativeApplication; 
import flash.desktop.SystemIdleMode; 
import flash.system.Capabilities; 
import flash.system.System; 

if (Capabilities.cpuArchitecture == "ARM") 
{ 
NativeApplication.nativeApplication.addEventListener(KeyboardEvent.KEY_DOWN, handleKeys, false, 0, true); 
} 



function handleKeys(event:KeyboardEvent):void 
{ 
    if (event.keyCode == Keyboard.BACK) 
    { 
     NativeApplication.nativeApplication.exit(); 
    } 
} 

Answer 1

您需要导入KeyboardEvent类。

这是否工作（注意额外的import语句我加的）：

import flash.desktop.NativeApplication; 
import flash.desktop.SystemIdleMode; 
import flash.system.Capabilities; 
import flash.system.System; 
import flash.events.KeyboardEvent; 
import flash.ui.Keyboard; 

if (Capabilities.cpuArchitecture == "ARM") 
{ 
NativeApplication.nativeApplication.addEventListener(KeyboardEvent.KEY_DOWN, handleKeys, false, 0, true); 
} 



function handleKeys(event:KeyboardEvent):void 
{ 
    if (event.keyCode == Keyboard.BACK) 
    { 
     NativeApplication.nativeApplication.exit(); 
    } 
}