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我已經看到了其他一些帖子,但從來沒有真正看到任何人指出可能導致它和什麼解決方案。DropDownList Flex 4.5不工作
我有一個loginview,我有一個數據模型和演示模型,通過歐芹注入。
下拉列表突然停止「工作」。該列表綁定到DM中的一些數據。你可以點擊列表,但下拉菜單從不發生,我根本沒有任何錯誤。它只是不顯示。
該應用程序是一個AIR應用程序,並且如果這使得任何區別,LoginView在主窗口中。
<?xml version="1.0" encoding="utf-8"?>
<s:Group xmlns:fx="http://ns.adobe.com/mxml/2009"
xmlns:s="library://ns.adobe.com/flex/spark"
xmlns:mx="library://ns.adobe.com/flex/mx"
xmlns:view="com.guhsd.academicnotifier.icon.view.*"
creationComplete="onCreationComplete(event)"
alpha="0">
<fx:Script>
<![CDATA[
import spark.filters.DropShadowFilter;
import com.greensock.TweenMax;
import com.greensock.easing.Quad;
import com.guhsd.academicnotifier.events.LoginEvent;
import com.guhsd.academicnotifier.login.model.LoginDM;
import mx.binding.utils.BindingUtils;
import mx.events.FlexEvent;
[Inject]
public var pm : LoginPM;
[Inject]
[Bindable]
public var dm : LoginDM;
[Bindable]
public var fieldsValid : Boolean;
[MessageHandler(selector="isloggedin")]
public function loggedinHandler(e : Event) : void
{
TweenMax.to(this, 1, { autoAlpha:0 });
}
private function onCreationComplete(event : FlexEvent) : void
{
setTimeout(checkLoginKey, 500);
}
private function showOrHide(show : Boolean) : void
{
var alpha_value : int;
var scaleXY : int = 1;
var newVertical : Number = 0;
if (show)
{
alpha_value = 1;
}
else
{
}
TweenMax.to(this, 0.25, { autoAlpha:alpha_value, verticalCenter:newVertical, ease:Quad.easeOut });
}
private function checkLoginKey() : void
{
var loginEvent : LoginEvent = new LoginEvent(LoginEvent.CHECK_LOGIN_KEY);
dispatchEvent(loginEvent);
setTimeout(function() : void
{
BindingUtils.bindSetter(showOrHide, dm, "showview");
BindingUtils.bindSetter(setDefaultSchoolSelection, dm, "lastSelectedSchool");
}, 2000);
}
private function setDefaultSchoolSelection(schoolName : String) : void
{
if (schoolName != null)
{
for (var i: String in cb_schoollist.dataProvider)
{
var name : String = cb_schoollist.dataProvider.getItemAt(int(i)).Name;
if (schoolName == name)
cb_schoollist.selectedIndex = int(i);
}
}
}
]]>
</fx:Script>
<fx:Metadata>
[Event(name="checkLoginKey", type="com.guhsd.academicnotifier.events.LoginEvent")]
[ManagedEvents("checkLoginKey")]
</fx:Metadata>
<s:Rect top="0" bottom="0" left="0" right="0"
topRightRadiusX="50" topRightRadiusY="50">
<s:fill>
<s:LinearGradient>
<s:GradientEntry color="#667178"/>
<s:GradientEntry color="#8C9BA5"/>
</s:LinearGradient>
</s:fill>
</s:Rect>
<s:VGroup horizontalCenter="0" verticalAlign="middle" gap="0"
paddingTop="20"
paddingBottom="10" paddingLeft="50"
width="100%">
<s:HGroup verticalAlign="middle" paddingLeft="40">
<s:Label text="Academic and Disipline Referrals"
color="#FF9900" fontSize="20"/>
<mx:Spacer width="100%"/>
<s:Label color="#cb0000" text="{dm.error_message}"
width="250"/>
</s:HGroup>
<s:HGroup width="100%" paddingRight="100" paddingTop="10">
<mx:Spacer width="100%"/>
<s:Form id="form">
<s:FormItem label="Username">
<s:TextInput id="tx_username" width="200"
text="{dm.user_name}"
enter="pm.login(tx_username.text, tx_password.text, cb_schoollist.selectedItem.Name);"/>
</s:FormItem>
<s:FormItem label="Password"
requiredIndicatorSource="">
<!-- sf88fd -->
<s:TextInput id="tx_password" width="200"
text="" enter="pm.login(tx_username.text, tx_password.text, cb_schoollist.selectedItem.Name);"
displayAsPassword="true"/>
</s:FormItem>
<s:FormItem label="School">
<s:DropDownList id="cb_schoollist"
dataProvider="{dm.school_list}"
labelField="Name"
selectedIndex="0" width="100%"
close="pm.setVPList(event.currentTarget.selectedItem)"/>
</s:FormItem>
<s:FormItem>
<s:HGroup width="200">
<mx:Spacer width="100%"/>
<s:Button label="Cancel" click="pm.quit()"/>
<s:Button label="Login" click="{pm.login(tx_username.text, tx_password.text, cb_schoollist.selectedItem.Name);}"/>
</s:HGroup>
</s:FormItem>
</s:Form>
</s:HGroup>
<s:HGroup verticalAlign="middle" paddingLeft="40" paddingBottom="20">
<view:Icon/>
<s:VGroup filters="{[ new DropShadowFilter() ]}" gap="0">
<mx:Spacer height="10"/>
<s:Label text="GUHSD" color="#ffffff" fontSize="30"/>
<s:Label text="Academic Referrals" color="#ffffff" fontSize="25"/>
</s:VGroup>
</s:HGroup>
</s:VGroup>
</s:Group>
那麼我解決了它,但從來沒有真正弄清楚是什麼問題。該視圖位於主應用視圖中,但在creationComplete之後,我創建了一個新的Spark窗口。一旦我停止將其添加到新的AIR窗口,並將主窗口應用程序中的長視圖留下,問題就消失了。 – mattwallace