課件程序設(shè)計(jì)7 swing

Swing用戶界Swing用戶界第十????Windows學(xué)習(xí)目學(xué)習(xí)目???能夠用WindowsBuilder創(chuàng)建We’veBeenProgramsWith1We’veBeenProgramsWith1￡4.434ButTextButTextInterfacesAre5JavaCanJavaCanDo6BriefJava.awtBriefJava.awt（AbstractWindowsToolkit）and????Swing用戶界Swing用戶界第十????Windows三個(gè)頂三個(gè)頂層Swing容JFrame：每個(gè)JFrame對(duì)象實(shí)現(xiàn)單個(gè)主窗JApplet：每個(gè)JApplet對(duì)象在瀏覽器窗口實(shí)現(xiàn)一個(gè)applet的顯示大多數(shù)Swing組件的層次關(guān)大多數(shù)Swing組件的層次關(guān)java.lang.add(Component,ObjectSomeSomeComponentMorecomponentsComponentMorecomponentsareavailable Swing用戶界Swing用戶界第十????Windows布局管Java平布局管Java平臺(tái)提供5個(gè)常用的布局管理器：FlowLayout、在默認(rèn)情況下，每個(gè)容器有一個(gè)布局管理器。對(duì)象的默認(rèn)布局管理器是FlowLayout，而內(nèi)容調(diào)用容器的setLayout方法設(shè)置布局管理panel=newJPanel(panel.setLayout(newBorderLayout())You’realreadyusingaYou’realreadyusingamanager–It’sthedefaultforsomenewPutsasmanycomponentsaspossibleonarow,thenmovestothenextRowsarecreatedasneededtoaccommodateallofthecomponentsComponentsaredisplayedintheordertheyareaddedtothecontaineroooTheresult？Well,it有、eas有、easwes和納外空區(qū)域。如果東，西未用，center占滿全部將組將組件放在單行或單列中?將屏幕劃分成網(wǎng)格，將組件放在單元格中。允許組件占據(jù)一個(gè)或多個(gè)單元網(wǎng)格網(wǎng)格中的行和列可以有不同的寬度OtherLayout?MoresamplecodesonSwingareavailableat:OtherLayout?MoresamplecodesonSwingareavailableat: ??Swing用戶界Swing用戶界第十????布局管理WindowsBuilderEventsandAcomponentobjectmaygenerateaneventEventsandAcomponentobjectmaygenerateaneventobjectwillrespondtothe?Whentheevent?thecomponentcallstheappropriatemethodofthelistener,passinganobjectthatdescribestheeventE.g.aJbuttonwillcallactionPerformed(),passinginan?事件的相應(yīng)事件的相應(yīng)偵聽器接每個(gè)接口中聲明對(duì)這類事件的處理方通用類型的事件偵聽器在java.awt.event包中Swing組件特有的偵聽器在javax.swing.eventJava.awt.event包中事件偵Java.awt.event包中事件偵聽器接如何如何處理事處理事件必須完成的兩個(gè)關(guān)鍵任注冊(cè)事件偵聽 實(shí)現(xiàn)事件處理器（方法YoucanYoucansetupquiteImportthejava.awt.eventimportSpecifyinclassheaderthenameoflistenertobepublicclassExample_ActionListenerimplementsActionListenerWithinaddComponents()addalistenertoWriteanactionPerformed()methodIdentifiesthesourceoftheExecutesrelevantcodebasedontheJButtonb=newJButton("PressJButtonb=newJButton("PresspublicfinalclassWindowExampleRealButtonActionListener{……publicvoidlabel.setText("Countis"+}arg0)匿名類匿名類的使用（簡化版MoreonAnonymousClasses:事件適配器事件適配器因接口都是抽象的，當(dāng)通過實(shí)現(xiàn)Listener成事件處理時(shí)，要同時(shí)實(shí)現(xiàn)接口中所有的方法.Listene（Adapter類）程序員可以擴(kuò)展適配器類，即用所需要的事處理重載那個(gè)方法的缺省實(shí)現(xiàn)一個(gè)事件適配器的子的象是相的事件聽型的象，例如MouseAdapte的子象是一個(gè)MouseListene?????適配器類和偵聽器接的實(shí)Example:事件適配適配器類和偵聽器接的實(shí)Example:事件適配器實(shí)現(xiàn)接鼠標(biāo)事鼠標(biāo)事件處鼠標(biāo)事件分為點(diǎn)擊和移動(dòng)事件，表示鼠標(biāo)事件的類publicvoidmouseDragged(MouseEventpublicvoidmouseMoved(MouseEvent鼠標(biāo)事鼠標(biāo)事件處鼠點(diǎn)的聽器接口是MouseListene，它有以下方法publicvoidmousePressed(MouseEventpublicvoidmouseReleaseed(MouseEventpublicvoidmouseEntered(MouseEventpublicvoidmouseExited(MouseEventpublicvoidmouseClicked(MouseEvent鍵盤事件處鍵盤事件處publickeyPressed(KeyEventkeyTyped(KeyEvente)：該方法判public按下的鍵是否是一個(gè)特殊的動(dòng)作鍵(1)EventHandling(1)EventHandlingSwing用戶界Swing用戶界第十????WindowsQuestion–whynotQuestion–whynotuseCan’tICan’tIjustuseaE.g.theWindowBuilderadd-inforWindowsWindows例題索例例?例題索例例?例例10.2例10.3例10.4例10.5例10.6例10.7例?????????例例例???????MoreTutorialonMoreTutorialonswingcomponentsOtherinterestingGrid