我們如何獲得Spark TextInput像素中的實際文本寬度？

Question

由於textWidth屬性在spark文本輸入中不可訪問，所以我們如何獲取該屬性？

Answer 1

火花有一些所謂的TextLineMetrics

，你可以做這樣的

var tm:TextLineMetrics = label.measureText(name); 
var width:int = tm.width; 

這裏是一個例子

<?xml version="1.0" encoding="utf-8"?> 

<fx:Script> 
    <![CDATA[ 
     import mx.controls.Alert; 
     import mx.controls.Text; 

     protected function cmdDoAction_clickHandler(event:MouseEvent):void 
     { 
      var tm:TextLineMetrics = cmdDoAction.measureText(cmdDoAction.label); 
      var _width:int = tm.width; 

      Alert.show(_width.toString()); 
     } 
    ]]> 
</fx:Script> 

<fx:Declarations> 
    <!-- Place non-visual elements (e.g., services, value objects) here --> 
</fx:Declarations> 

<s:Button id="cmdDoAction" 
      label="Kensodev" 
      click="cmdDoAction_clickHandler(event)"/> 
    </s:Application> 

這會給ÿ ou實際寬度