饒榮慶 -- 您今天UCWEB了嗎？--http://www.ucweb.com

原文 http://hzxdark.javaeye.com/blog/175628
3GEYEg2Q[*H.Chttp://www.3geye.net/?3/viewspace-3177

7@]#MI;tR&~3kbox 是一個(gè)MVC2模型的J2ME開源框架，用于快速開發(fā)可擴(kuò)展的J2ME MIDP應(yīng)用程序。
$J.LGL+MaC\3主頁(yè):http://kbox-mvc.sourceforge.net/3GEYE1K@N9jQ+\5Au

#H1yL3T/f%~c @Tp3其結(jié)構(gòu)如圖：3GEYE9W#NM4cTZ,Sv
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-Sz4O})v6x"i$gp YV3所有的可視組件都位于需要經(jīng)由MIDlet來(lái)顯示，而MIDlet上的所有事件，包括鍵盤事件，按鈕事件提交到ActionController 上， ActionController跟據(jù)配置文件，將事件轉(zhuǎn)發(fā)給相應(yīng)的Action，Action將處理結(jié)果得到的可視組件(Displayable)通過(guò) ActionForward返回MIDlet顯示。3GEYEt"v[2\O1kpY I{

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\&B'AzW:G%^%r3KBOX的使用非常簡(jiǎn)單， 以一個(gè)HELLO WORLD 為例：
i$iR9L},mR3創(chuàng)建一個(gè)MIDLET:3GEYE([.MKl3qX/o#}9P
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public class TestMIDlet extends MIDlet{3GEYE na+C?0D ?N x-Ma
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protected void startApp() throws MIDletStateChangeException {3GEYE{Y'bJA%`$I
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ActionController controller = ActionController.getInstance(true);3GEYE0eMXJu8@

2h-Q ^n&OS_ [N9T E3controller.registerViewer(this); //Register the MIDlet3GEYE(k8H!w0[mh2d-\
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MyKGameCanvas mgc = new MyKGameCanvas("MYGC"); //Create a GameCanvas3GEYE2LI V hVD/W
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2F F p?Pb,H/o5B3KCommand kc = new KCommand("TEST BUTTON", Command.HELP,1,"MYCMD",null);
XW!_LjoZX0[3mgc.addCommand(kc);
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{*l1vR/j3mgc.setCommandListener(controller);
l$yH4JR{+y3Display.getDisplay(this).setCurrent(mgc);3GEYE,q?~.Bq Q6d mJ0ISY
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}
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創(chuàng)建一個(gè)Canvas:3GEYEpK a[X"R+u

%f"[?wh7y$^)z9{B3public class MyKGameCanvas extends KGameCanvas{3GEYEM.m`SV"a:kV

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%lZ2@@9S l3public MyKGameCanvas(String uniqueID) {3GEYELn?~!M#fU7B H EB
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super(uniqueID);
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hE/B4p o+vKO3public void showString(String string){
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Graphics g = this.getGraphics();
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g.setColor(0xFFFFFFFF);
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P \W(lj"])s+[l3g.fillRect(0, 0, this.getWidth(), this.getHeight());
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-UTFj,Lmq3g.drawString(string, 0, 0, Graphics.TOP|Graphics.LEFT);
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this.flushGraphics();
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}
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創(chuàng)建相應(yīng)的Action:3GEYE6X0Z9z$Q~Z9Q
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public class TestAction implements Action{3GEYEkl6kRt-{Qo;Zy
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public void excute(KCommand cmd, Item item, Displayable dis, ActionForward forward,Hashtable parameters) {3GEYEQQ6zD
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Fdch-xvH2s{y t3MyKGameCanvas mkc = ((MyKGameCanvas)dis);
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8[zS3T8H3mkc.showString("hello world! From "+mkc.getUniqueID()+"."+cmd.getUniqueID());
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將按鈕事件注冊(cè)給Action:3GEYE7Z8m0dQ H+}H)q

%{^mRl$lb3DEBUG=true //open the debug model of KBOX

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CMD.MYCMD.ACTION=action.TestAction
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注意這里的MyKGameCanvas 繼承的KGameCanvas，而不是GameCanvas。KBOX的KGameCanvas類繼承自GameCanvas，當(dāng)并沒有使用 GameCanvas那種使用線程監(jiān)聽狀態(tài)的模型，而是重寫了keypressed等方法來(lái)處理鍵盤事件。另外，KGameCanvas的重寫的按鈕事件 的處理已經(jīng)實(shí)現(xiàn)了重復(fù)按鍵情況，而且可以指定重復(fù)按鍵的靈敏度，這點(diǎn)是非常好用的：）3GEYED4_%h~y#s,]&\
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KCommand是KBOX擴(kuò)展的按鈕組件。
"LOB9Dw&O!m3KCommand kc = new KCommand("TEST BUTTON", Command.HELP,1,"MYCMD",null);3GEYE~bu U-[A.`$S,~
第一個(gè)參數(shù)是按鈕的名字，第二參數(shù)是按鈕類型，第三個(gè)參數(shù)是優(yōu)先級(jí)，第四個(gè)參數(shù)是ID名，用于配置文件的映射，對(duì)應(yīng)“ CMD.MYCMD.ACTION=action.TestAction”中的MYCMD，第五個(gè)參數(shù)是可傳遞參數(shù)，是一個(gè)Hashtable類型，用于 向Action傳遞參數(shù)（當(dāng)然你喜歡的話，也可以將參數(shù)提到配置文件里去……）。3GEYE8ElR"T9VmC,DP

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