教你7步實現(xiàn)flex自定義event及參數(shù)傳遞-文庫吧
2025-07-20 16:48 本頁面
【正文】 。text=存入：/31. mx:Labelx=87y=56width=90id=labTotal/32. mx:Labelx=5y=56text=ParentTotal:/33. /mx:Canvas34. mx:ControlBar35. mx:Buttonlabel=調(diào)用父方法id=btnExecParentclick=onParentEvent(event)/36. /mx:ControlBar37. /mx:Panel 第五步：完成兒子B“”： view plaincopy to clipboardprint?1. ?xmlversion=encoding=utf8?2. mx:Panelxmlns:mx=width=222height=170title=組件BcreationComplete=init()3. mx:Script4. ![CDATA[5. import6. import7. import8. 9. privatevarexecParent:MyEventDispatcher。//觸發(fā)父親節(jié)點事件10. functioninit():void11. {12. execParent=()。13. }14. publicfunctiononGetParentTotal(e:Event,...agrs):void//響應(yīng)父親類的觸發(fā)的事件15. {16. =String(agrs[0].totalValue)。17. }18. 19. publicfunctiononParentEvent(event:Event):void//通過自定義事件觸發(fā)類傳遞參數(shù)20. {21. =22. =this。23. (newEvent())。24. }25. ]]26. /mx:Script27. mx:Canvasheight=90width=19728. mx:TextInputwidth=92y=10x=85id=txtValue/29. mx:Labelx=13y=12text=存入：/30. mx:Labelx=87y=56width=90id=labTotal/31. mx:Labelx=5y=56text=ParentTotal:/32. /mx:Canvas33. mx:ControlBar34. mx:Buttonlabel=調(diào)用父方法id=btnExecParentclick=onParentEvent(event)/35. /mx:ControlBar36. /mx:Panel 第六步：完成父親類: view plaincopy to clipboardprint?1. ?xmlversion=encoding=utf8?2. mx:Applicationxmlns:mx=layout=absoluteheight=323xmlns:ns1=ponent.*creationComplete=init()。width=5743. mx:Script4. ![CDATA[5. import6. import7. import8. privatevarparentDP:MyEventDispatcher。9. publicvartotalValue:Number=0。10. functioninit():void11. {12. parentDP=()。13. nodeEvent=newMyExtendEvent(totalValue,)。14. 15. if(!())16. (,getSonValue)。//注冊通過自定義事件觸發(fā)類傳遞參數(shù)17. 18. //注冊事件時傳遞參數(shù)19. addEventListener(,(,this))。20. addEventListener(,(,this))。21. }22. functiongetSonValue(e:Event):void23. {24. if(==A)25. {26. =String()。27. }28. else29. {30. =String()。31. }32. }33. 34. //將結(jié)果返回兒子節(jié)點35. privatevarnodeEvent:MyExtendEvent。36. functiononSumToNode(e:Event):void//觸發(fā)事件將結(jié)果返回兒子節(jié)點37. {38. totalValue=Number()+Number()。39. =String(totalValue)。40. =totalValue。41. dispatchEvent(nodeEvent)。42. }43. ]]44. /mx:Script45. mx:Canvasx=0y=0width=573height=323backgroundColor=729AAC46. mx:TextInputx=65y=219id=txtA/47. mx:TextInputx=65y=248id=txtB/48. mx:TextInputx=65y=276id=txtTotal/49. mx:Labelx=37160
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