自定義類(broadcastmarquee.as)：package marquee
/**初始化
*/private
function initbroadcast():void
/**
* 如果有新的廣播訊息,或者長度改變進行滾動顯示
* */private
function scrollbroadtext():void
} }
/**控制滾動資訊
*/private
function timerhandler(evt:timerevent):void
else
}else
else
} m_broadcasttext.scrollrect =m_rect;
}else
} /**停止移動
*/private
function stopmovebroadcast():void
} /**************************廣播資訊處理事件********************************
*//*
*滑鼠經過處理事件
*/protected
function rolloverhandler(event:mouseevent):void
} /**滑鼠離開處理事件
*/protected
function rollouthandler(event:mouseevent):void
} /**************************廣播資訊屬性************************************
*//*
*移動時間間隔
*/public
function set broadcastdeplay(value:number):void
/**設定廣播資訊內容
*/public
function set broadcasttext(value:string):void
/**取得廣播資訊內容
*/public
function
get broadcasttext():string
/**廣播資訊寬度寬度
*/public override
function
get width():number
public override
function set width(width:number):void
/**設定滾動方向('left' or 'right')
*/public
function set direction(value:string):void
/**設定字型格式化樣式
*/public
function set defaulttextformat(format:textformat):void
public
function settextformat(format:textformat, beginindex:int = -1, endindex:int = -1):void
/**字型大小
*/public
function set fontsize(value:object):void
/**字型名稱
*/public
function set fontfamily(value:string):void
/**字型顏色
*/public
function set color(value:object):void
/**是否是粗體
*/public
function set fontweight(value:object):void
}
}testbroadcastmarquee.mxml :
<?
xml version="1.0" encoding="utf-8"
?>
<
xmlns:mx
=""layout
="absolute"
creationcomplete
="init()"
xmlns:marquee
="marquee.*"
>
<
marquee:broadcastmarquee
width
="500"
height
="25"
broadcastdeplay
="800"
broadcasttext
="公告：火爆商品等你拿!"
scrolldirection
="left"
>
marquee:broadcastmarquee
>
>
<?xml version="1.0" encoding="utf-8"
?>
<
xmlns:mx
=""layout
="vertical"
verticalalign
="middle"
backgroundcolor
="white"
>
<
mx:script
>
private function fade_click():void
private function wipe_click():void
]]>
mx:script
>
<
mx:sequence
id="fader"
>
<
mx:fade
alphafrom
="0.0"
alphato
="1.0"
/>
<
mx:pause
duration=""
/>
<
mx:fade
alphafrom
="1.0"
alphato
="0.0"
/>
mx:sequence
>
<
mx:sequence
id="wiper"
>
<
mx:setpropertyaction
name
="alpha"
value
="1.0"
/>
<
mx:wiperight
showtarget
="true"
/>
<
mx:pause
duration=""
/>
<
mx:wiperight
showtarget
="false"
/>
<
mx:setpropertyaction
name
="alpha"
value
="0.0"
/>
mx:sequence
>
<
dock
="true"
>
<
mx:button
label
="fade box"
click
="fade_click();"
/>
<
mx:button
label
="wipe box"
click
="wipe_click();"
/>
<
mx:spacer
width
="100%"
/>
<
mx:label
text
="effect pause ( ms):"
/>
<
mx:hslider
id="slider"
minimum
="1000"
maximum
="3000"
value
="1500"
labels
="[1000,2000,3000]"
livedragging
="true"
showtrackhighlight
="true"
snapinterval
="100"
tickinterval
="500"
datatipprecision
="0"
/>
>
<
mx:box
id="box"
width
="100%"
height
="100%"
backgroundcolor
="halosilver"
alpha
="0.0"
/>
>
跑馬燈效果
cgrect frame labelshow.frame frame.origin.x 180 labelshow.frame frame uiview beginanimations testanimation context null uiview setanimationduration 8....
跑馬燈效果
一句話概括，平移再畫一次。textview 預設就支援跑馬燈效果，但需要設定一些東西，滿足一些條件。但我想知道它的原理。看這效果，就是平滑移動 textview 的內容，這不就是 mscrollx 幹的嗎，結合 valueanimator 很容易就實現了。難點在於，把文字的頭部重新從右邊開始畫出來。...
跑馬燈效果
android ellipsize marquee android marqueerepeatlimit marquee forever android singleline true 但是這樣子有乙個缺點，就是這種狀態的跑馬燈只能在textview處於焦點狀態的時候，它才會滾動，對於實際的開發應用...