Flex中如何利用FocusManager類的setFocus函數設置TextInput的焦點的例子

接下來的例子演示了Flex中如何利用FocusManager類的setFocus函數，設置TextInput的焦點。

<?xml version="1.0" encoding="utf-8"?> <mx:Application name="FocusManager_setFocus_test" xmlns:mx="http://www.adobe.com/2006/mxml" layout="vertical" verticalAlign="middle" backgroundColor="white"> <mx:Script> <!--[CDATA[ import mx.controls.Alert; private function submitButton_click(evt:MouseEvent):void { Alert.show(evt.currentTarget.label, Object(focusManager.getFocus()).name); } private function resetButton_click(evt:MouseEvent):void { username.text = ""; password.text = ""; Alert.show(evt.currentTarget.label, Object(focusManager.getFocus()).name); } ]]--> </mx:Script> <mx:ApplicationControlBar dock="true"> <mx:Button label="Set focus to Username" click="focusManager.setFocus(username);" /> <mx:Button label="Set focus to Password" click="focusManager.setFocus(password);" /> </mx:ApplicationControlBar> <mx:Form id="form" defaultButton="{submitButton}"> <mx:FormItem label="Username:"> <mx:TextInput id="username" /> </mx:FormItem> <mx:FormItem label="Password:"> <mx:TextInput id="password" displayAsPassword="true" /> </mx:FormItem> <mx:FormItem direction="horizontal" horizontalAlign="right" width="100%"> <mx:Button id="submitButton" label="Submit" click="submitButton_click(event);" /> <mx:Button id="resetButton" label="Reset" click="resetButton_click(event);" /> </mx:FormItem> </mx:Form> </mx:Application>